Javier Ortega, PhD. Lab Teaching Assistants: Rolando Garcia David Leal Luz Sotelo

Transcription

1 Javier Ortega, PhD Lab Teaching Assistants: Rolando Garcia David Leal Luz Sotelo Fall 2014

2 Dr. Javier Ortega Office ACSB Phone (956) Office Hrs MWF: 11:00 am 12:00 pm Website BlackBoard Learn will be utilized

3 Permanently bound carbon copy notebook Safety glasses Appropriate lab clothing No Phones!

4 Week Lab Rotation I - Introduction Introduction, Safety, Group assignments 1 Introductory Lab Rotation II - Analysis of Failing Steel Bolts 2 Hardness (1&2, 3&4) 3 Metallography (3&4, 1&2) Rotation III - Characterization of a Metal/Alloy 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) Rotation IV - Characterization of Polymers 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) Rotation V - Final Project 12 Material Testing Assignment 13 Material Testing Assignment 14 Final Project Presentations

5 Reports (50%) Attendance (10%) Lab Notebook (15%) Final Project (15%) Quizzes (10%)

6 Reports (50%)

7 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

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9 Cover Page

10 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 DR. JAVIER ORTEGA BY: YOUR NAME GOES HERE DATE PERFORMED: DUE DATE: DATE RECEIVED:

11 Cover Page Background & Theory

12 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

13 Cover Page. Background & Theory Objective

14 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!

15 Cover Page Background & theory Objective Experimental Setup & Procedures

16 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.

17 Cover Page Background & theory Objective Experimental Setup & Procedures Results & Discussion

18 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

19 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

20 Exam Grade (Points) How Well a Student Will do on an Exam 100 Captions for all graphs, charts, figures, etc Time (Hours) Studying Watchin TV 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.

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

23 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.

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

25 All sources should be referenced. Equations, definitions, explanations, etc. All raw data not included in the lab report should be in the appendix.

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27 Brief discussion of your reason for and process of completing the experiment. Pertinent data and analysis with captions. Discussion and Conclusions in 1 paragraph.

28 Objective and Procedures Data Analysis Conclusions

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30 Total of 10 Written Reports due 2 weeks after the end of the rotation. Rotation I: Introduction (Due week of Sept 8) Rotation II: Analysis of Failing Steel Bolts (Due week of Sept 23) Rotation III: Characterization of Metals (Due week of Oct 21) Rotation IV: Characterization of Plastics (Due week of Nov 18) You will turn in an electronic copy on BlackBoard and a hard copy at the beginning of class.

31 20 points off per day No written reports accepted after it is 1 week late. You will receive a 0 for that report.

32 Week Lab Output Due Rotation I - Introduction Introduction, Safety, Group assignments 1 Introductory Lab Report 9/8 Rotation II - Analysis of Failing Steel Bolts 2 Hardness (1&2, 3&4) Memo 9/23 3 Metallography (3&4, 1&2) Rotation III - Characterization of a Metal/Alloy 4 Determination of Case Depth (1,2,3,4) Memo 5 Tensile Properties of Metals (2,3,4,1) Memo 10/21 Identifying the Impact Transition Temperature of Steel 7 (4,1,2,3) Report Rotation IV - Characterization of Polymers 8 Rate Dependence of Thermoplastic Properties (1,2,3,4) Report 11/18 11 Thermal Analysis of a Polymer (4,1,2,3) Memo Rotation V - Final Project 12 Material Testing Assignment 13 Material Testing Assignment Report 14 Final Project Presentations & Slides 12/1 9 Jominy Test for Comparing Heat Treatability of Steels Cure Optimization of Thermosetting Adhesives (2,3,4,1) Memo 6 10 (3,4,1,2) Fabrication and Testing of Composite Materials (3,4,1,2) Memo Memo

33 Written Reports (50%) Attendance (10%)

34 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.

35 Written Reports (50%) Attendance (10%) Lab Notebook (15%)

36 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

37 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.

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39 Written Reports (50%) Attendance (10%) Lab Notebook (15%) Quizzes (10%)

40 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.

41 Written Reports (50%) Attendance (10%) Lab Notebook (15%) Quizzes (10%) Final Project/Presentation (15%)

42 Research project of your choosing but approved by me Proposal due by week of Oct 6, 2014 Final project presentation week of Dec 1, 2014 Final project report due at time of presentation

43 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

44 Sign & turn in next week for a quiz grade.

45 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

46 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

47 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

48 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

49 Units! Statistics

50 Property Unit Symbol Property Unit Symbol J Meter m Joule (=kg m2/s2) Distance Energy Foot ft Foot-pound force ft lb f Time Mass Velocity Acceleration Force second s Power Watt W (=kgm 2 /s 3 ) minute min Celcius C Temperature kilogram kg Farenheit F pound mass lb m Kelvin K m/s Rockwell HR(Scale) in/min Hardness Vickers kg/m 2 m/s 2 Brinell HB lb m /ft 2 Pa Pressure Pascal (=kg/m s 2 ) (Stress) Newton N (=kg m/s 2 ) psi psi (=lb f /in 2 ) Pound force lb f

51 Prefix Symbol Value Prefix Symbol Value deci d 10-1 deka da 10 1 centi c 10-2 hecto h 10 2 milli m 10-3 kilo k 10 3 micro μ 10-6 mega M 10 6 nano n 10-9 giga G 10 9 pico p tera T 10 12

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53 Become familiar with using various measurement techniques and a material testing machine. Explore the relationship between atomic bonds and material properties.

54 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

55 Ceramics Ionic &/or Covalent Metals Metallic Polymers Covalent & van Der Waals

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57 Hardness Thermal Expansion Thermal Conductivity Melting