Javier Ortega, PhD

Lab Teaching Assistants:

Rolando Garcia

Luz Sotelo

Erick Gonzalez

Spring 2015

Dr. Javier Ortega

Office ENGR 3.263 (Fishbowl)

Phone (956) 665-3527

Office Hrs M-R 4:00 pm – 5:00 pm

Email ortegaja@utpa.edu

Website http://ortagaja-utpa.weebly.com

BlackBoard Learn will be utilized

Permanently bound carbon copy notebook

Safety glasses

Appropriate lab clothing

No Phones!

Week Lab

Introduction, Safety, Group assignments

Introductory Lab

2 Hardness (1&2, 3&4)

3 Metallography (3&4, 1&2)

4 Determination of Case Depth (1,2,3,4)

5 Tensile Properties of Metals (2,3,4,1)

6 Jominy Test for Comparing Heat Treatability of Steels (3,4,1,2)

7 Identifying the Impact Transition Temperature of Steel (4,1,2,3)

8 Rate Dependence of Thermoplastic Properties (1,2,3,4)

9 Cure Optimization of Thermosetting Adhesives (2,3,4,1)

10 Fabrication and Testing of Composite Materials (3,4,1,2)

11 Thermal Analysis of a Polymer (4,1,2,3)

12 Material Testing Assignment

13 Material Testing Assignment

14 Final Project Presentations

Rotation V - Final Project

Rotation IV - Characterization of Polymers

Rotation III - Characterization of a Metal/Alloy

1

Rotation II - Analysis of Failing Steel Bolts

Rotation I - Introduction

Reports (50%)

Attendance (10%)

Lab Notebook (15%)

Final Project (15%)

Quizzes (10%)

Reports (50%)

Formal Lab Report Multiple pages

Extensive analysis

Very thorough discussion

Relation of results to real world applications

Technical Memo 1 page only

Only necessary analysis

Brief discussion

Simple conclusions

Cover Page

THE UNIVERSITY OF TEXAS PAN-AMERICAN

COLLEGE OF ENGINEERING AND COMPUTER SCIENCE

DEPARTMENT OF MECHANICAL ENGINEERING

MECE 2140

MATERIALS LABORATORY

SEMESTER/YEAR

LABORATORY SECTION #

GROUP #

LABORATORY ANALYSIS FOR

_____________________________________

PREPARED FOR:

SAMANTHA RAMIREZ, MSE

BY:

YOUR NAME GOES HERE

____________________________________

DATE PERFORMED: _________________________

DUE DATE: _________________________________

DATE RECEIVED: ___________________________

DR. JAVIER ORTEGA

Cover Page

Background & Theory

Introduce the theory for the lab you conducted

Use what you have learned in class and previous classes

Provides the reader with a reason to read your report

Helps the writer to better understand the theory behind the lab performed

Cover Page.

Background & Theory

Objective

Should be a concise, single paragraph stating the purpose of the experiment ◦ What was the purpose of the lab you performed?

◦ What was supposed to have been achieved?

◦ What were you trying to do?

Reason for conducting the experiment

Must be stated in YOUR OWN WORDS!

Cover Page

Background & theory

Objective

Experimental Setup & Procedures

Should be a short description of the experimental procedure ◦ What steps did you take to successfully perform the

lab?

◦ What ASTM Standard was followed?

◦ This section can be in bullet or paragraph format.

◦ Be sure to include all names of machines or instrumentation used.

Be detailed but not exhaustive.

Cover Page

Background & theory

Objective

Experimental Setup & Procedures

Results & Discussion

“Factual information (as measurements or statistics) used as a basis for reasoning, discussion, or calculation.”1

Pertinent data should be presented in a clear, concise chart.

All columns or rows should have headings and must include units!

1 http://www.merriam-webster.com/dictionary

“An examination of a complex, its elements, and their relations.”1

Briefly describe the theoretical analysis and data analysis procedures and present and discuss your results ◦ Include any and all equations used to perform the

analysis. ◦ Chart and/or graphs are absolutely necessary If equations were utilized, both charts and graphs are

needed.

Discussion of analysis and results after each graph or chart

Figure 1: This graph depicts how well a student will do on an exam based on the amount of time spent studying or watching TV.

0

50

100

0 5 10

Exam

Gra

de (Poin

ts)

Time (Hours)

How Well a Student Will do on an

Exam

Studying

Watchin TV

Captions for all graphs,

charts, figures, etc.

Cover Page

Background & theory

Objective

Experimental Setup & Procedures

Results & Discussion

Conclusions

What were the results from the analysis that was performed on your data?

How do your results compare to theory learned in class? ◦ Tie your results to topics in class and to

everyday situations.

Do not express feelings in the conclusions.

Be technical with your conclusions.

Use your knowledge to make connections and decipher data.

Cover Page Background & theory Objective Experimental Setup & Procedures Results & Discussion Conclusions References Appendix

All sources should be referenced. ◦ Equations, definitions, explanations, etc.

All raw data not included in the lab report should be in the appendix.

Brief discussion of your reason for and process of completing the experiment.

Pertinent data and analysis with captions.

Discussion and Conclusions in 1 paragraph.

Objective and Procedures

Data

Analysis

Conclusions

Total of 10 Written Reports due 2 weeks after the end of the rotation. ◦ Rotation I: Introduction (Due week of Feb 6) ◦ Rotation II: Analysis of Failing Steel Bolts (Due

week of Feb 20) ◦ Rotation III: Characterization of Metals (Due

week of March 27, after spring break) ◦ Rotation IV: Characterization of Plastics (Due

week of May 1st)

You will turn in a hard copy at the beginning of class.

20 points off per day

No written reports accepted after it is 1 week late. You will receive a 0 for that report.

Week Lab Output Due

Rotation I - Introduction

1 Introduction, Safety, Group assignments

Introductory Lab Report 2/6

Rotation II - Analysis of Failing Steel Bolts

2 Hardness (1&2, 3&4) Memo 2/20

3 Metallography (3&4, 1&2)

Rotation III - Characterization of a Metal/Alloy

4 Determination of Case Depth (1,2,3,4) Memo

3/27

5 Tensile Properties of Metals (2,3,4,1) Memo

6

Jominy Test for Comparing Heat Treatability of Steels (3,4,1,2) Memo

7

Identifying the Impact Transition Temperature of Steel (4,1,2,3) Report

Rotation IV - Characterization of Polymers

8 Rate Dependence of Thermoplastic Properties (1,2,3,4) Report

5/1 9 Cure Optimization of Thermosetting Adhesives (2,3,4,1) Memo

10 Fabrication and Testing of Composite Materials (3,4,1,2) Memo

11 Thermal Analysis of a Polymer (4,1,2,3) Memo

Rotation V - Final Project

12 Material Testing Assignment

13 Material Testing Assignment

14 Final Project Presentations Report & Slides

5/8

Reports (50%)

Attendance (10%)

Will be taken every week

If late, you will be counted absent.

1 absence the entire semester ◦ Only excused absences can be made up

◦ Any more than 1 absence, you will be dropped.

Do not leave the laboratory during lab time.

Remain with your group at all times.

Written Reports (50%)

Attendance (10%)

Lab Notebook (15%)

Must be graded after each lab before you leave ◦ Forgetting your notebook is not an excuse.

You will not receive credit if you forget it.

Only write in ballpoint pen Must be legible Scratch out with one line Do not write on scratch paper and

recopy later. Make mistakes

A detailed record of all experimental work which includes study rationale, materials, methods, models, raw experimental data, incorrectly performed work, interpretations, calculations, conclusions, and future work.

Ensures that future workers may repeat the previously done work.

Verifies unclear results and intellectual property.

Written Reports (50%)

Attendance (10%)

Lab Notebook (15%)

Quizzes (10%)

Cover laboratory procedures and safe operating procedures for the lab you will be performing that day

Must be completed in BlackBoard Learn before lab time each week.

Reports (50%)

Attendance (10%)

Lab Notebook (15%)

Quizzes (10%)

Final Project/Presentation (15%)

Research project of your choosing but approved by me

Proposal due by week of March 27, 2015

Final project presentation week of May 8, 2015

Final project report due at time of presentation

DO NOT CHEAT!

If caught, you will: ◦ Lose credit for the work

◦ Be reported to the department chair, Dr. Freeman

◦ Be reported to the Dean of Students

Bronc Honor Code ◦ Sign last page of syllabus

Sign & turn in next week for a quiz grade.

Fire Alarm

Fire extinguisher for small fires

No food or drinks!

Locate the following: ◦ Nearest safety exit

◦ Nearest fire extinguisher

◦ Nearest telephone

◦ Electrical power panels

◦ Nearest shower and eye wash station

Page 12

Safety Glasses

No long sleeve shirts, jackets, sweaters, etc.

Tuck in shirts (aprons available)

Closed toe shoes

Full length pants (jeans preferred)

No jewelry

Tie back long hair

Wear caps backwards

Do not use it unless you know how it works

No sitting while machines are running

All blades must be at a complete stop before opening

Clean up when you are done

Return all tools

Know where the emergency stop button is

You must fix any safety violation IMMEDIATELY.

NO HORSEPLAY

Any extremely careless behavior that endangers the safety of others will result in you immediately losing lab privileges for the semester

Safety quiz next week!

◦ All information in lab procedures

Units!

Statistics

Property Unit Symbol Property Unit Symbol

Distance

Meter m

Energy

Joule J

(=kg∙m2/s2)

Foot ft Foot-pound force ft∙lbf

Time

second s Power Watt W (=kgm2/s3)

minute min

Temperature

Celcius °C

Mass kilogram kg Farenheit °F

pound mass lbm Kelvin K

Velocity m/s

Hardness

Rockwell HR(Scale)

in/min Vickers kg/m2

Acceleration m/s2 Brinell HB

lbm/ft2 Pressure (Stress)

Pascal Pa

(=kg/m∙s2)

Force Newton N (=kg∙m/s2) psi psi (=lbf/in2)

Pound force lbf

Prefix Symbol Value Prefix Symbol Value

deci d 10-1 deka da 101

centi c 10-2 hecto h 102

milli m 10-3 kilo k 103

micro μ 10-6 mega M 106

nano n 10-9 giga G 109

pico p 10-12 tera T 1012

Become familiar with using various measurement techniques and a material testing machine.

Explore the relationship between atomic bonds and material properties.

Primary ◦ Ionic

Adjacent and oppositely charged ions

High bonding energies

◦ Covalent

Sharing of electrons between neighboring atoms

◦ Metallic

Sharing of valence electrons in metallic solids

◦ Mixed (Polar covalent)

Has both ionic and covalent properties

Secondary ◦ Van der Waals

Ceramics ◦ Ionic &/or Covalent

Metals ◦ Metallic

Polymers ◦ Covalent & van Der Waals

Hardness

Thermal Expansion

Thermal Conductivity

Melting