SME 3523 SHIGLEY' S MECHANICAL DESIGN SOLUTION

Gambit 2-2 Full Tutorial guide

2011-01-10T15:11:00.002+08:00

Full tutorial for newbie in CFD. This tutorial will help the newbies to improve their skill in gambit and soon to Fluent.

Click here for full tutorial >>>> Gambit 2-2 Tutorial

Report Rubric 2011 New Version

2011-01-10T14:55:00.001+08:00

New report Rubric and format.

Please Click Here >>>> Report Rubric

Fluent 12: Air Foil Tutorial

2011-01-06T14:40:00.004+08:00

•The purpose of this tutorial is to introduce the user to good techniques for modelling flow in high speed external aerodynamic applications.

•Transonic flow will be modelled over a NACA 0012 airfoil for which experimental data has been published, so that a comparison can be made.

•The flow to be considered is compressible and turbulent.

•The solver used is the density based implicit solver, which gives good results for high speed compressible flows.

•The tutorial is carried out using FLUENT and CFD Post from within Workbench, but it could also be completed in standalone mode.

Clicks Here to get full Tutorial >>>>> AIRFOIL

Fluent 12: Mixing Tee

2010-10-31T11:05:00.004+08:00

Tutorial 1 fluent 12. mixing tee.

•Mixing of cold and hot water in a T-piece

–how well do the fluids mix?

–what are the pressure drops?

Click Here to download file

Fluid Mechanics: Home work ( Introduction to Fluid Mechanics)

2010-07-11T14:57:00.003+08:00

Home Works 1: Introduction to Fluid Mechanic.

Home Works 2: Statics Fluid

Home Works 3: Fluid Dynamic

Home Works 4: Nozzle

Please clicks Home works to download file:

Download >>>> Home Works 1

Home Works 2

Home works 3

Home Works 4

Fluids Mechanic: Modul

2010-07-06T16:24:00.002+08:00

Module and Notes for Polytechnic students.

Please click Module to get a full file.

Module

Finite Element: Collection Test with solution

2010-03-09T14:24:00.004+08:00

These post is specially for undergraduate study for Finite Element.
The topic for the question and solution including:

1. One dimensional
2. Plane truss
3. Bending of beam

please click here for collection

Sample 1
Sample 2
Sample 3
Sample 4

Mechatronics: Introduction to Mechatronics

2010-01-20T09:39:00.003+08:00

Mechatronics has been defined in many different ways over the years. Definitions
include *“incorporating electronics more and more into mechanisms,” *“the integration
of mechanical engineering with electronics and intelligent computer control in the
design,” and *“the application of complex decision making to the operation of physical
systems.” In essence, mechatronics is adding intelligence to a mechanical design or
replacing mechanical designs with an intelligent electronic solution. As technology
advances, designs that were once purely mechanical are now best done with electronics
or a combination of both. A good example of mechatronics that you are probably
familiar with is your thermostat at home. Mechanical thermostats typically had 2 to 3
degrees of error and could not be programmed for different temperatures throughout the
day. The only way to adjust the temperature setting of a mechanical thermostat is to
walk over to the thermostat and turn the dial. Modern thermostats are digital. These
thermostats are more accurate and are typically programmable, allowing you to save
energy when you are away from home. Although digital thermostats are usually more
expensive than the mechanical thermostats of old, a digital thermostat will pay for itself
very quickly in the energy cost it saves you. In addition, digital thermostats have push
button controls and a digital readout that consumers like. So in the case of the household
thermostat, converting the design to a mechatronic solution has made thermostats more
accurate, easier to use, and they save you money.

Click Here for further reading >>>>>> Mechatronics

Carry Marks for Port Dickson Polytechnic

2009-12-04T09:45:00.002+08:00

For Student DKM 21 Please clicks PB to view your marks

PB DKM 21

For Student DTP 33 Please clicks PB to view your marks

PB DTP 33

Good Luck for your Final Exam!!!

Finite Element: Bending of Prismatic Beams

2009-11-06T22:17:00.002+08:00

What is a Beam?
A beam is a structural element that primarily carries bending (flexure or
transverse) loading.
Beams generally carry vertical forces but they can also sustain horizontal
loads (e.g. due to an earthquake).
Beams are characterized by: a) shape of cross-section, b) length, c)
material, and d) type of supports
Beams are used in the construction sectors are typically made of steel,
reinforced concrete, or wood

Types of Beam
The most common types of steel beam is the
I-beam or wide-flange beam or a universal
beam. They are commonly used in steelframed
buildings and bridges
Other common beam profiles are the C-channel, the hollow structural
beam, and the angled-beams

For Further reading please Click here >>>>>>Beam

Fluid Mechanic: Water Hammer

2009-10-23T22:03:00.002+08:00

Water hammer (or, more generally, fluid hammer) is a pressure surge or wave resulting when a
fluid in motion is forced to stop or change direction suddenly (momentum change). Water
hammer commonly occurs when a valve is closed suddenly at an end of a pipeline system, and a
pressure wave propagates in the pipe. Valve closure can result in pressures well over the steady
state values, while valve opening can cause seriously low pressures, possibly so low that the
flowing liquid vaporizes inside the pipe.

The excessive pressure may fracture the pipe walls or cause other damages to the pipeline
system. The possible occurrence of water hammer, its magnitude and the propagation of the
pressure wave must be carefully investigated in connection with the pipeline design.
(J.Houghtalen:2009)

The simple example where it is happen when you turn OFF a water flow suddenly (like a
dishwasher, a clothes washer, a toilet or even closing a hand faucet suddenly. Shutting off the
flow suddenly sends a pressure or shock wave down the water line through the water shocking
the pipes and creating the 'hammer' noise. These shock waves travel faster than the speed of
sound and can exert very great instantaneous pressures. Over time, water hammer can damage
pipes, valves and eventually weaken pipe joints. (R. Hancock: 2002)

The Hazard causes by water hammer are various. Firstly danger of high pressure: the
excess pressure resulting from water hammer is added to the initial pressure. If the total pressure
is greater than a maximum permissible pressure there is a risk of the pipe rupture or joint failure.
Secondly is a danger of negative pressure: negative relative pressure may result from water
hammer, if these pressure are below -10m of water column, a pocket cavitation or water vapor is
created, with possible collapse of the conduit wall or sucking in the joint seals. The pipe lining
material may also be damaged. Finally risk of the pipe fatigue resulting from rapidly alternating
positive and negative pressures with singly may not lead to actual failure of the conduit.
(Y.Labye: 1988)

Click Here to read more>>>>

Mechanic Machine: Past semester Final exam

2009-10-02T14:35:00.003+08:00

This Final exam included 6 chapter.
1. General Dynamics
a) Velocity & acceleration
b) Linear and angular acceleration
c) work done by constant force and more...

2. Moment inertia
a) Parallel Axis theorem
b) Perpendicular Theorem
c) and more....

3. Hoisting System
a) inertia couple
b) Load balancing system
c) and more....

4. Friction

5. Screw

6. Belting

Click Final exam to download

Fluid Mechanics: Quasi-Steady flow

2009-10-01T13:23:00.003+08:00

Quasi- steady flow is one type of transient flow. In the characterized by the absence of inertial or elastic effects on the flow behavior. In such a flow the variation of discharges and pressures with time is gradual and over short time intervals the flow appears to be steady. Typical examples are the drawdown of a reservoir or the variation in demand in water distribution system over a 24- hour period.

Please click here for the example to solution of the Quasi-steady flow.

Solidworks 2005 installer and tutorial

2009-09-30T12:22:00.005+08:00

Download free solidworks 2005

Download Solidworks 2005 Tutorial

Writing: Sample Proposal

2009-09-07T16:30:00.002+08:00

This is a sample proposal. This sample proposal is about Finite Element project.
Click Proposal to read full proposal.

Finite Element: One Dimensional & truss example to solution

2009-09-07T16:14:00.003+08:00

This is example to solution the basic concept of the Finite element.
1. The example of the matrix
2. Gaussian Elimination Method
3. One dimensional problem
4. Truss Element problem

Click Full Example for further reading

Electrical Technology: Jan 09 Session Final Exam

2009-08-21T23:50:00.003+08:00

This post about a Final exam for Electrical Technology
The question cover about:

1. Electromagnetism
2. DC Generator
3. DC Generator
4. DC Motor
5. Ac Machine
6. Transformers

Please Click Final Exam to view/download file.

Also has a sample Quiz January session 2009. The topic is Electromagnetism.
Click Quiz January 2009 to view/download.

Good Luck!!

Finite Element: One Dimensional Problem example to solution

2009-08-20T23:10:00.003+08:00

The manual step to solve the One Dimensional in Finite Element Method:

1. Transform into finite Element Model
2. Calculate the stiffness matrix
3. Assemble the stiffness matrix [K]
4. Write the element force vector
5. Write the global system linear equation
6. apply the boundary conditions and reduced global system of linear equation
7. Solve the unknown nodal displacements
8. Find the reaction force

Clicks One Dimensional to download a question
and Clicks One Dimension for Solution

Electrical Technology: June 2009 Session Test

2009-08-20T09:45:00.003+08:00

This is past Semester Test. This Test included 4 Question.

1. Electromagnetism
2. DC Generator & DC Motor
3. AC Machine
4. Transformers

This Question is for further study. Please Click June Session Test to download
For Others Past Semester Please Click Here for Question and Clicks here For Answer

Finite Elements: Matrix Algebra & Gaussian Elimination

2009-08-14T11:06:00.002+08:00

The important Mathematics method for solving problem in Finite Elements Method. Normally the methods using Gaussian Elimination. This method using a matrix method.

Click Gaussian Elimination To read a full notes and Example

Fluid Mechanics: Pipe system (steady flow)

2009-08-06T23:50:00.002+08:00

This article contents are the example to solution for series pipe, Parallel pipe, branch pipe and network pipe. The network pipe solution is using Hardy Cross Method.

Click Pipe System Question to get the exercise and click Solve problem to get a great answer.

Good luck and be the best!

World Without Engineer

2009-08-04T21:37:00.004+08:00

Air Cond: Psychrometric process

2009-08-04T09:17:00.003+08:00

Click here to get a full notes

Fluid Mechanics: Parallel Pipe Solving Concept

2009-07-31T15:02:00.003+08:00

Paralel pipe occurs more one pipe flow. This problem usually use an Energy equation.

A simple continuity equation still apply:

Qin = Qout

Losses through the parallel pipe is same value:

hL = ha = hb = hc

Click Parallel for the full notes.

Finite Element: Introduction to Finite Element Method

2009-07-21T21:40:00.004+08:00

Finite element method is a numerical method that can be used
for solving engineering problems.
It is particularly useful for problems involving complex geometries, combined
loading and material properties, in which the analytical solutions are not available.
FAQ: Is this method accurate?... Yes, for simple problems and if material properties
and loading condition are modeled very close to the actual conditions. No,
especially when the problems to be solved are too complex.
Among the sources of error involved in this method are…
Geometrical simplification;
Interpolation function;
Material properties;
Round‐off, etc.

Click here for a full notes

Air Cond: Psychrometric

2009-07-16T20:59:00.003+08:00

Moist air can be treated as binary mixture, composed of:

Dry air – essentially mixture of nitrogen, oxygen and traces of argon, carbon dioxide, neon etc.

Water vapour – which exists at low partial pressure. At low low atmospheric pressure and temperature, water vapour can be treated as ideal gas.

Assumptions.

(1) vapour contains no dissolved gases

(2) gaseous phases can be treated as ideal gas

(3) no interaction between components and all components are at the mixture temperature

Psychrometric properties All properties are based on the “dry-air part”. Consider a volume of moist air

Barometric pressure = 101.325 kPa Gibbs phase rule, F = 2 + 2 – 1 = 3 (ie need 3 intensive properties to define the state). Since pressure is fixed, need 2 other properties:

(a) dry bulb temperature, TDB …………… easily measured

(b) moisture content, w

(c) dew point temperature, TDP

(d) percentage saturation,

(e) relative humidity,

(f) specific enthalpy, h

(g) specific volume, v

(h) wet bulb temperature, TWB ……….…….usually measured

Click here to get a full notes.
Click here for a psychrometric chart

Thermodynamics: Intorduction and First Law

2009-07-15T16:22:00.003+08:00

This post cover about an example to solution for selected question in Mc Conkey book (Application thermodynamics for Engineer andTechnologist). The question are1.5, 1.10, 1.13 and 1.14.

Please click First Law to read full solution

Air Cond: Gas Mixture inside air cond system

2009-07-12T19:52:00.002+08:00

(a) Chemical compound – cannot be separated by mechanical means

(b) Mixture – each constituent retains its own identity; can be separated by mechanical means. Constituents in a mixture are called the components. Each component may exist in one or more phases.

Example of mixture:

2 components (air and water)
3 phases (gas, liquid and solid)

Click Mixture to read more

Electronics: Field Effect Transistor (FET)

2009-07-03T17:11:00.002+08:00

This note will discuss about:

1. JFET construction and schematic symbol
2. I-V characteristics & operating region
3. JFET biasing circuit
4. DC Analysis
5. AC Analysis

Click FET to read/ Download a full notes

Solid Mechanics: Plastic Bending example to solution

2009-07-03T16:43:00.002+08:00

In order to understand the theory of reinforced concrete beams you would need to study a very wide
range of material well beyond the scope of one part of one outcome of one module. For this reason the
material offered here is greatly simplified.

ELASTIC BENDING

Consider a simple rectangular beam at a point where the bending moment is M.
The neutral axis passes through the centre of area.
The strain is directly proportional to distance y.
Since σ = E ε the stress is also directly proportional to distance y.
Suffix ‘c’ refers to compression and ‘t’ to tension.

Click Plastics Bending for the full reading with example

Solid Mechanics: Strain Energy

2009-06-27T08:08:00.002+08:00

When an elastic body is deformed, work is done. The energy used up is stored in the body as
strain energy and it may be regained by allowing the body to relax. The best example of this
is a clockwork device which stores strain energy and then gives it up.

We will examine strain energy associated with the most common forms of stress encountered
in structures and use it to calculate the deflection of structures. Strain energy is usually given
the symbol U.
Consider a bar of length L and cross sectional area A. If a tensile force is applied it stretches
and the graph of force v extension is usually a straight line as shown. When the force reaches
a value of F and corresponding extension x, the work done (W) is the area under the graph.
Hence W = Fx/2. (The same as the average force x extension).
<Click here for the full note>

On completion of this tutorial you should be able to do the following.

Define strain energy due to a direct stress.

Define strain energy due to pure shear stress.

Define strain energy due to pure torsion.

Define strain energy due to pure bending.

Use strain energy to determine the deflection of simple
rectangular and circular structures.

Explain the affect of impact loading on the deflection of
structures.

Explain the affect of a suddenly applied load.

Explain the theorem of Castigliano.

Calculate the deflection of simple structures by applying
Castigliano’s theorem.

Electronics: Bipolar Junction Transistor (BJT)

2009-06-16T22:19:00.002+08:00

Summary of this Notes
1. BJT construction and schematic symbol
2. BJT operations
3. Configuration and current (I) relationship
4. I- V characteristics
5. Operating region
6. Design and analysis of biasing circuit- DC analysis
7. Transistor and a small signal amplifier- AC analysis

Click BJT to download full notes

Air Cond system

2009-06-12T23:13:00.002+08:00

Air Conditioning (AC) System

AC systems can be classified by the methods of achieving the within-the-space cooling (and heating):

1.1 Unitary unit

It is a compact, self-contained unit located within or next to the air-conditined space. Such a system includes the direct expansion (DX) system.

1.2 Split Unit

It is also a compact, self-contained DX system with the condensing unit (compressor and condenser) located at some distance from the evaporating unit (evaporator and expansion valve). Long refrigerant pipings connect the condensing and evaporating unit.

1.3 Central Systems

Central systems include: all-water system, all-air system and air-water system.

1.3.1 All-water system

In this system, a cooling medium (chilled water or brine – but not refrigerant) is supplied from a remote source and circulated through the terminal unit within the conditioned space.

1.3.2 All-air system

In an all-air system, the final cooling medium (air) is brought into the conditioned space through ducts and distributed within the space through outlets.

1.3.3 Air-water system

Such a system uses chilled water and cold air from a central station. The major part of thermal load is met by chilled water which is circulated through a coil.

1.4 All-air central centralised systems

1.4.1 Constant air volume (CAV) system

In a CAV system, the volume flow rate of air is constant. During part-load operation (eg on rainy days), terminal reheaters can be used to increase the supply air temperature to ensure conditioned space air dry bulb temperature is maintained at comfort level. Without reheat, indoor air temperature cannot be controlled when zone sensible loads are lower than design-day values; resulting in uncomfortable conditions.

1.4.2 Variable air Volume (VAV) system

In a VAV system, the volume flow rate of air is varied to ensure comfortabale indoor air dry bulb temperatures. An indoor air thermostat senses indoor air temperature variation and sends a signal to a VAV box control unit which increases the volume flow rate of supply air when the sensible load increases and vice-versa.

1.4.3 Dual-Duct/Multizone (DDMZ) system

In this system, the supply air temperature is varied to meet changing zone sensible loads. When zone sensible load decreases, zone air temperature will decrease and the indoor air thermostat sends a signal to the mix box damper to mix more bypassed air with less cool air, such that the higher supply air temperature will ensure that the indoor air temperature will rise to the set point value.

In the system, the supply air temperature is variable, but the volume flow rate of supply air is constant.

In dual-duct system, the mixing is done at the terminal unit, while in multizone system the mixing is accomplished at the air handling unit (AHU).

Dynamic: Motion

2009-06-07T21:49:00.005+08:00

The motions have three basic principle. The basic principle is a linear motion. Second is a angular motion and finally is a relative motion. This post contain the example to solution for three basic principle of the motion.

Basic equation for linear motion

Basic Equation for angular motion

For detail of this example to solution please click motion to download or view the file.

Air cond : Aircrafts Refrigeration

2009-06-04T19:44:00.004+08:00

Gas cycle refrigeration

The gas cycle is used exclusively in air- conditioning of aircrafts; military and commercial.

Often reffered to as air cycle refrigeration because air is the working fluid in the cycle. Its COP is lower than that of conventional vapor compression cycle. it can sork as an open or closed cycle. the benefit of an air cycle included:

(i) Small amount of leakages are tolerable since air is the refrigerant.

(ii) The simplest open system requires only one heat exchanger

(iii) Readily available refrigerant

(iv) Cabin pressurization and air-conditioning can be combined into one operation

(v) Initial compression of the air is obtained by the ram effect (conversion of the high kinetic energy of ambient air relative to aircraft into enthalpy and ultimately pressure rise). Refrigerated air capacity ranges from 3 to 70 kg a minute.

Click Aircrafts to read full note

Design: Weld Joint (bond joint)

2009-06-02T11:19:00.005+08:00

The step how to solve the problem of the weld joint (please refer to Shigley's 8th edition book)
1. Get direct shear = Load/ total weld area

2. Find centroid of weld area (see table 9.1 at Chapter 9 page 466)

3. Get torsional shear

- use unit polar area moment of inertia Ju, by setting the weld throat = I
- See table 9.2 at page 470 Ju formula for nine common weld joint

- once you get Ju,
J= te Ju = 0.707 he Ju
- then torsional shear is

4. Vectorially sum direct and torsional shear

To read full note and example please click weld joint

Design: Basic static load exercise with solution

2009-06-01T09:41:00.002+08:00

Basic static force vector exercise for going through to another topic inside the Mechanical Components Design. This topic really important because of the basic force vector. This post included 6 question from beginning to advance o the statics analysis.

Please click Question to read the question and click Solution for these problem solving

Air cond: Vapor absorption type

2009-05-30T20:54:00.006+08:00

Click Absorption to read full notes

Air cond: Sample Test with solution (Standard and actual cycle)

2009-05-29T16:04:00.002+08:00

Air conditioning & Refrigeration sample test 1. This question contain the basics air cond cycle, the differences between actual vapor and isentropic cycle. For the further reading, please click Question and Solution.

Design: Bolt Joint (solution chapter 8 Shigley's)

2009-05-27T15:54:00.006+08:00

Bolt is one of the method for the joint. This post will cover the selected answer from Shigley's 8th edition problem. The solution of the problem 8.44, 8.48 and 8.49. It's will help you to most understanding for the bolt joint topic. The list below show the step how to solve the bolt joint.

1. Get the direct shear
2. Find centroid
3. Get torsional shear
4. sum vector and find the biggest

click bolt to read/study more about the solution

Communication: Criteria of a good public speaker

2009-05-26T16:38:00.003+08:00

This is a list how to be a good speaker.

1. Skill of gathering information
- Information can be in various form like statistics, historical record, true statements, opinion, idea and viewpoint.
- ways to gather information like reading, surfing the internet, observation and discussion.
2. Skill organizing information
- Introduction of the speech.
- Body for the main part of speech contain all key points, chronological, organization of idea and spatial
3. Skill of using appropriate language to convey information
- The best speaker speaks the language of this audience
4. Skill of delivering information.
- Good speaker are not born, but they are made. So the speaker should be practice
and training.
- Use gesture and posture
- Facial expression
- understanding verbal and non-verbal signal from audience
- eye- contact.

Design: Gear system (Chapter 13 Shigley's) solution

2009-05-25T14:32:00.004+08:00

This chapter address the kinematic relation and forces transmitted by two type of gear: spur, bevel and worm. Gear train is using for power transfers. It using a gear ratio equation.
Forces acting on the spur gear. For the detail of the solution of this topic. I have already done for 13-16, 13-18 and 13-24 so, for the detail solution please click Gear.

Mechanic Machine: Compound gear system

2009-05-25T14:26:00.004+08:00

Mechanic Machine & vibration first topic is cover about a compound gear system. How to solve this problem. Just Follow the step below.

Step to solve compound gear system

1. observe the mesh gear
2. Using the gear ratio equation

for the example of this solution. Please click Compound gear for your further understanding.

Electronic: Introduction to Semi conductor

2009-05-24T17:50:00.005+08:00

Contents of this note

1. Atomic Structure
2. Energy Band
3. Material Classification
4. Covalent Bonds
5. Conduction in semi- conductor
6. Free electrons & holes as carrier of currents
7. Doping of semiconductor material
8. The p-n junction
9. Biasing the p-n junction

For the full note please click semiconductor.

Air Cond: Past Year Final Exam Question

2009-05-23T09:40:00.004+08:00

Past year Refrigeration & Air Conditioning Final Exam Question. This Question included the following topics:

1. Air Conditioning Basic Cycle
a. T-s & P-h diagram
b. Using R-134a or R-12 table to find value of enthalpy h.
c. Find the work of compressor and refrigerating effect.

2. Sling psychrometer to find the value of the dry bulb and wet bulb with the specific value of
atmospheric pressure. This question want you to evaluate:
a. Partial Pressure
i. Water Vapor
ii. Dry air
b. Relative humidity
c. Humidity ratio
d. Specific enthalpy

3. Room design question. Using Psychrometric Chart to evaluate the value of
a. Outdoor air mass flowrate
b. Supply air
i. Dry bulb temperature
ii. Mass flowrate
c. mix air
i. Dry bulb temperature
ii. relative humudity
d. cooling coil load

4. Ducting design. To approximate tho total pressure drop inside the ducting.

click Air Condition to get a dual language question

Click Answer to get a solution

History of Malaya Politic Post WWII

2009-05-22T14:22:00.004+08:00

Post war political development influence independence struggle in Malaya.

This writing for the general reading for South East Asia. This writing wrote for General University subject. (Hubungan Etnik UHS 1152 code for UTM).

Click Etnik to get a full writing.

Dynamic: Final exam collection

2009-05-22T08:51:00.002+08:00

Final exam collection from (PSZ) Sultanah Zanariah Library. This collection have 4 set past year.

The question included:
1. Particle kinematic
a. Linear movement
b. Curve movement
c. Relative movement

2. Particle Kinetic
a. Work & energy
b. Impulse & Momentum
c. Linear Momentum
d. Impact

3. Kinematic rigid body
a. Relative velocity
b. Relative acceleration

4. Moment inertia
a. Parallel axis theorem

5. Kinetic rigid body
a. Force & acceleration
b. Work & Energy

To get a file please click Dynamic Collection

Fluid Mechanic: Past Year Final Exam Collection

2009-05-21T11:45:00.004+08:00

Past Year Final exam collection From PSZ (Sultanah Zanariah Library)

This Collection cover about:

1. Viscosity
2. Tube U
3. Floating
4. Application of Bernoulli Equation
5. Momentum Equation
6. Piping System

This Collection special for South East Asia only

Click Collection to Download

Mechanic Machine: Past Year Final Exam

2009-05-21T11:36:00.003+08:00

Sample Question for Mechanic Machine & Vibration From Malaysia Technology University.

These question have 6 question from the topics:

1. Gear system
2. Epicyclic gear
3. Balancing
4. Turning moment diagram
5. Free Damped vibration
6. Force Damped vibration.

Click Final Exam to download

Thermodynamics: Air Conditioning Cycle

2009-05-20T11:45:00.004+08:00

Air Conditioning & Refrigeration inside the Mc Conkey book cover at Chapter 14. This post included some solution from the book.

The selected solution cover about 1 stages process and undercooling process. For the advance topic like using Cascade and Flash Chamber will be post for the next time.

Have a nice references from me. Its will help you to do the others exercise for this topic.

Please comment on the comment area. Good Luck.

Click Air Cond Process to get a full Note & Solution

Fluid Mechanics: Wind Tunnel Lab report

2009-05-19T11:07:00.004+08:00

Objective of the report are:
How to find the value of the drag force from the cylinder surface.
Approximate constant value for velocity, drag force and what is the flow through the surface.

This lab report is special for South East Asia only.
The report is in Malay Language.

Click here! to view full report

Gear system: Toyota vios gear system

2009-05-18T11:13:00.005+08:00

Toyota Vios automatic gear system. The output speed (rpm) and Km/h shown in the graph. This data come from the conversion power from the engine bay.

For the full analysis click here!

Thermodynamics: Vapor Power Cycle

2009-05-16T06:58:00.003+08:00

Vapor power cycle or steam power cycle. This cycle is a very basic thermodynamics cycle. It use T-s diagram.
click here to get the selection exercise solution from Mc Conkey book.
Good Lucks. Please try this at home

Air Cond: Type of Refrigerants

2009-05-15T14:08:00.004+08:00

International designation as refrigerants of R. There are many type of refrigeration. The type of refrigeration are:
1. Inorganics refrigerants

2. Organics refrigerants

Click here to get a full notes

Carrymark for Port Dickson Polytechnic Student

2009-05-14T09:23:00.006+08:00

Current standing For program DEM23 & SKM22

click

GOOD LUCK FOR YOUR FINAL EXAM!!

Design: Shaft Design

2009-05-13T20:37:00.002+08:00

The shaft design inside the Shigley's Mechanical Engineering Design cover at Chapter 6.
Shaft design is very important because:

1. Shaft must have adequate torsional strength to

transmit torque and not be over stressed.

2. Shafts are mounted in bearings and transmit power

through devices such as gears, pulleys, cams and

clutches.

3.Components such as gears are mounted on shafts

using keys

4. Shaft must sustain a combination of bending and torsional loads Design Problems

There are 6 step to do how to choose the correct shaft

Step 1: Calculate the torque on the shaft from power

Step 2: Find the torsional stress in the shaft

Step 3: Calculate the loads coming from gears, belts or chains

Step 4: Calculate the bending moment due to the

acting forces. If necessary combine the forces.

Step 5: Calculate the bending stress in the shaft

Step 6: Combine the bending stress and the torsional Stress.

Some example solution from Shigley's 8th Edition exercise question now available to download.

Download Example Solution Now!

Design: Bearing Selection Flow Chart

2009-05-12T15:10:00.005+08:00

Bearing are manufactured to take pure radial loads, pure thrust load, or combination load of two kind of loads. This flow chart show the flow how to select bearing depends on load.
Special thanks to M.F. Abdul Hamid Ph.D because teach me how to select bearing from the static loads.

Air Cond: Multi Pressure System

2009-05-11T12:43:00.003+08:00

Air conditioning diagram for the multistage system

Click at the picture for the full size view

Thermodynamics: Gas Power Cycle

2009-05-10T21:28:00.002+08:00

Gas power cycle is using Brayton Cycle (show in figure) .

This figure show partial equation of the gas power cycle.

Click here to get the example of the Gas Power Cycle

Electrical Technology: Answer of the test 1

2009-05-09T20:55:00.002+08:00

Solution of the Test Jan 09 have available to download.

Please click here to download file

Electrical Technology: Jan 09 Session Test

2009-05-09T11:28:00.002+08:00

This semester test 1 question for review for the next final exam. The answer will be post later.
This test have 5 question.
Question 1
Electromagnet
Question 2
DC Generator
Question 3
DC Motor'
Question 4
AC Machines
Question 5
Transformers

Please click here to download the file

Air Cond: Basics concept of Air cond cycle

2009-05-07T13:30:00.006+08:00

The basic concept of the air cond cycle using T-S diagram and P-H diagram.
Air conditioning cycle is reverse carnot cycle.

More Detail of these notes & Example please click here!!

Electronics: Transistor notes & Example

2009-05-06T14:40:00.006+08:00

In electronics , a common-emitter amplifier is one of three basic single-stage bipolar-juntion (BJT) amplifier topologies, typically used as a voltage amplifier. In this circuit the base terminal of the transistor serves as the input, the collector is the output, and the emitter is common to both (for example, it may be tied to ground references or a power sulyy), hence its name. The analogous field effect transistor circuit is the common source amplifier.

Click here for more details!

Fatigue Failure: Chapter 5 Shigley's 8th Edition Solution

2009-05-05T12:23:00.004+08:00

Failure analysis and prevention are important functions to all of the engineering disciplines. The materials engineer often plays a lead role in the analysis of failures, whether a component or product fails in service or if failure occurs in manufacturing or during production processing. In any case, one must determine the cause of failure to prevent future occurrence, and/or to improve the performance of the device, component or structure.

Easy example: if you have a wire, then the wire you bend with your hand in several time. The wire will fail. this is called the fatigue failure.

for the example of the solution chapter 5 Shigley's is using Max Shear Stress theory (MSST) & Distortion Energy Theory (DET). Please check here! for the solution

Refrigeration & Air Cond: Exercise Psychrometric Chart

2009-05-03T08:58:00.012+08:00

These file contents of the exercise for the psychrometric chart. Dry bulb and wet bulb temperature is given with atmospheric Pressure. for the full exercise question please click here!

Manual gear system: Perodua Myvi (Daihatsu sirion)

2009-05-01T07:09:00.004+08:00

The output speed when the engine running at the selection speed of the car. the car speed is evaluated from the engine speed. click here! for the full report.

English: Report Writing

2009-04-27T14:04:00.002+08:00

English report writing is very important to the technical student. Application of the subject are, how to write down your report follow the correct format. The sample of the report writing can be download.

cliks here to download.

Report

Thanks.

Thermodynamics: Air Standard Cycle solution

2009-04-24T09:23:00.003+08:00

AIR STANDARD CYCLES

Because the working fluid does not go through a complete thermodynamic cycle in the engine (even though the engine operates in mechanical cycle) the internal combustion engine operates on the so called open cycle. However in order to analyze internal combustion engines, it is advantageous to devise closed cycles that closely approximate the open cycles. One such approach is the air standard cycle which is based on following assumptions:

A fixed mass of air of the working fluid throughout the entire cycle, and the air is always an ideal gas. Thus there is no inlet process or exhaust process.
The combustion process is replaced by a heat transfer from an external source.
The cycle is completed by heat transfer to the surroundings (in contrast to the exhaust and intake processes of an actual engine.)
All processes are internally reversible.
The additional assumption is usually made that air has constant specific heat.

The compression and power strokes of an internal combustion engine are the ones which account for much of its work output. The exhaust and intake strokes are up a small account of the work and form a small counterclockwise loop on P-V diagram.

Neglecting the lower bit part, the upper region (clockwise) is approximated as an Otto cycle with two isochores (V=C) and two isentropics (S=C)

The file available to download. Click here to download

Fluid Mechanic: Boundary Layer Note & Tutorial

2009-04-21T06:39:00.003+08:00

Boundary layer is that layer of fluid in the immediate vicinity of a bounding surface. In the Earth's atmosphere, the planetary boundary layer is the air layer near the ground affected by diurnal heat, moisture or momentum transfer to or from the surface. On an aircraft wing the boundary layer is the part of the flow close to the wing. The boundary layer effect occurs at the field region in which all changes occur in the flow pattern. The boundary layer distorts surrounding nonviscous flow. It is a phenomenon of viscous forces. This effect is related to the Reynolds number. Now the file can be download.
Click here to download

Mechanic Machine- turning moment, undamped, free damped Solution

2009-04-18T21:03:00.004+08:00

This example now available to download. This file include various of example of the topics. It can help you to solve the problem of these topics.

Click Here to Download Full Solution

An Introduction Diod PNP

2009-04-17T12:03:00.003+08:00

Diod PNP notes are available to download at download link. the file can be download at the Electronics link. This notes will help you to know the basic concept of the diod and some example solving of the diod problem.

Click Here to download full notes

Skill training Reports Rubric

2009-04-17T11:44:00.003+08:00

Dear Port Dickson Polytechnic student, this rubric will help you to score which parts of the reports cover for the most marks. The file now available to download.

Click Here to download Report Rubric

Mechanic machine & vibration

2009-04-15T10:42:00.003+08:00

The solution of the Balancing & reciprocating, Radial engine balancing and turning moment diagram & flywheel. This Solution will help the mechanical engineering students to solves the other problem. The notes is available to download.

Click Here to download file

Air Cond: Psychrometric chart

2009-04-13T11:24:00.005+08:00

Sample Plotting of the Psychrometric chart. From the value of the Sensible heat factor (SHF) = 0.7, room design is 24 degree C and Humidity 50%. The outside air temperature is 31.3 degree C and Humidity is 70%. The Supply air, Apparatus Dewpoint, Mix air temperature, Outside air volume, supply air temperature, mix air volume, room air humidity, cooling bypass factor and etc can be evaluated through psychrometric chart.

Click here to get a Chart

Past years test 1 (July 2007)

2009-04-10T21:25:00.002+08:00

Past years sample test is now available to download. Good luck to all!

Click Test to Download

E2063 Electrical Technology 2

2009-04-09T10:43:00.003+08:00

Home work for electrical technology 2 is available to download.

Click Home work to download

PPD Table Tennis Club joining Muhibbah Challenge

2009-04-08T20:48:00.005+08:00

PPD Table Tennis Club joining the tournament at Perlis Polytechnic. Goog luck to all player to defend the last year title.

mechanical engineering design problem solution

2009-04-06T21:45:00.002+08:00

This blog is special for undergraduate mechanical engineering student. There are some solution for Machine Design already upload. Just click at the link. These solution will help you to solve the problem in Shigley' s book.

Download E- Solution Now!