2142-391 Engineering Mechanical Laboratory

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2142-391 Engineering Mechanical Laboratory

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Instructors

Monday Sections (1-6)

Asst. Prof. Kanit Wattanavichien (KWC)

Asst. Prof. Boonchai Lertnuwat (BLN)

Lect. Thanyarat Singhanart (TSN)

Lect. Chanat Ratanasumawong (CRW)

Lect. Pairat Tangpornprasert (PTP)

* Asst. Nopdanai Ajavakom (NAV, Mon)

* Lab coordinator

Friday Sections (7-13)

Prof. Somsak Chaiyapinunt (SCP)

Asst. Prof. Kanit Wattanavichien (KWC)

Asst. Nopdanai Ajavakom (NAV, Mon)

Lect. Alongkorn Pimpin (APP)

Lect. Phongsaen Pitakwatchara (PPT)

Lect. Sawat Luengruengrit (SLR)

* Assc. Prof. Asi Bunyajitradulya (ABJ, Fri)

* Lab coordinator

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Introduction to experimentation as a means to acquire knowledge.

Practice applying prior knowledge and basic principles together with experimentation

to physical systems in order to

gain better understanding of learned basic principles,

gain further knowledge.

Introduction to some basic mechanical and automotive systems, their underlying

principles, and how they work.

Course Objectives

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Through experimentation, laboratory, practice and homework:

Experimentation and basic concepts

error and uncertainty analysis

measurement and instrumentation

data analysis

interpretation of experimental results

reporting of experimental results

basic experiments in solid mechanics, thermodynamics, fluid mechanics and basic

engine testing

Course Description

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Time:

Sec 1-6: Lec: Mon 1-2 pm, Lab: Mon 2-5 pm.

Sec 7-13: Lec: Fri 1-2 pm, Lab: Fri 2-5 pm.

Place:

Laboratory: Laboratory locations

First floor, ME2 building

First, second, and third floor, ME1 building

Presentation: Room will be announced.

Time and Place

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Experiments and Instructors

Lab No. Lab Sec 1-6(Mon., 1-5 pm)

Instructor

Sec 7-13(Fri., 1-5 pm.)

Instructor

1 Engine Testing KWC KWC

2 Material Properties TSN

3 System Dynamics CRW NAV

4 Centrifugal Pump APP

5 Pipe Flow ABJ (or 10)

6 Deflection of Beam PTP

7 Heating Value Measurement BLN PPT

8 Cross Flow Heat Exchanger SCP

9 Thermocouple and Viscosity NAV SLR

10 Wind Tunnel Testing (ABJ, or 5)

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4-point scale: 4 = A, 3.5 = B+, … (you know the rest)

Weight

Participation 25

Laboratory participation (by instructor, 4-scale) 15

Presentation participation (by points 4-scale) 10

(simply participate by asking questions)

Report (4-scale) 25

Presentation (4-scale) 25

Oral Exam (4-scale) 25

Scale: Score will be based on 4-point scale.

Grade: Your grade will be the weighted-average of all the 4-point-scale

scores.

Evaluation and Grading

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Class Conduct and Schedule

Week Contents

1 Orientation

2-4 2-3 Laboratory 1

4 Presentation (+Individual report)

5-7 5-6 Laboratory 2

7 Presentation (+Group report)

8-10 8-9 Laboratory 3

10 Presentation (+Individual report)

11-13 11-12 Laboratory 4

13 Presentation (+Group report)

14 Oral Examination

Each section does 4 laboratories

Each laboratory: 2 weeks of laboratory + 1 week of presentation

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Schedule for Each Group & Rotation

Sec Lab 1 Lab 2 Lab 3 Lab 4

1 1 9 7 6

2 2 1 9 7

3 3 2 1 9

4 6 3 2 1

5 7 6 3 2

6 9 7 6 3

Sec Lab 1 Lab 2 Lab 3 Lab 4

7 1 9 8 7

8 3 1 9 8

9 5 3 1 9

10 4 5 3 1

11 7 4 5 3

12 8 7 4 5

13 9 8 7 4

Monday Sections (1-6) Friday Sections (7-13)

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Required Textbook:

Figliola, R. S., and Beasley, D. E., 2000, Theory and design for mechanical

measurements, 3rd Edition, Wiley, New York.

Class Web: http://www.lecturer.eng.chula.ac.th/fmeabj/index.php3

For communication, announcement, etc., check it twice a week.

Textbooks and Class Web

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Experimentation

Explorer

Discovery

Observation Question

Curiosity

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Why Experimentation

http://www.obsidiandawn.com/tutorials/skintones/skintones.htm

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Why Experimentation

http://www.galileolibrary.com/artpaints/vangogh-sunflowers_on_green.jpg

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Why Experimentation

http://www.its.caltech.edu/~atomic/snowcrystals/movies/movies.htm

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Why Experimentation

http://www.bmumford.com/photo/naturetl/index.html

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[Why Experimentation]

http://www.wetasschronicles.com/UnderwaterNukeTest.wmv

See also http://www7.nationalgeographic.com/ngm/0508/feature6/multimedia.html

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Why Experimentation

Engine Test

Boeing Gallery: http://www.boeing.com

(Different)

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Goals and Roles of Experiment

Goal: Extract knowledge and useful information regarding the

system of interest with reasonable justification.

new knowledge,

used in product design and development,

qualify a product according to some standard,

falsify/verify a theory, call for a new theory,

hint toward the structure or mathematical form of a theory,

etc.

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Some Focuses of The Course

Observation and Question

Logic / Reasoning

Three Main Components

Problem Statement / Objective

Approach

Result / Conclusions

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Structure of An Experiment

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Knowledge and Structure of An Experiment

Problem Statement/Objective

Justification Method

Supporting Evidences

Reasonably Justified Results/Conclusions

Observation / Ask The Right Question

Premise: (Propositional) Knowledge is a statement (about something)

that we have a reasonable justification

to believe that it is reasonably true.

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Reporting of Experimental Results

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Report: Conclusions

What are conclusions?

Conclusions are convictions based on evidence.

From The American Institute of Physics: AIP Style Manual, Fourth Edition:

http://www.aip.org/pubservs/style/4thed/toc.html

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In conclusion: Why experiment?

To put simply,

We can learn more.

We can develop more.

We can discover more.