CE334L Lab Weekly Schedule Fall 2011

CE334L Lab Weekly Schedule Fall 2011 - CE334L Lab Weekly...

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CE334L Lab Weekly Schedule Fall 2011 – Professor Nastar CE334L Week 1 Mon. 8/22 (Lecture) General Issue: 1. Safety first, be careful in the lab. 2. No uncovered food is allowed in the lab. 3. You will get dirty in this lab. Lab Report: 1. One report per group. 2. All lab reports MUST be typed. 3. All lab reports MUST be submitted in the beginning of the following lab session (unless a different deadline has been set by the instructor). 4. Lab reports MUST be submitted in hard-copy format. 5. Late reports will not be accepted or graded. 6. The names of all group members as well as the group name MUST be typed on the cover page of the report. Group names will be assigned by the lab instructor at the time of group assignments. Lab Tour & Group Assignment 1. Universal testing machine: PJ-2.1, PJ-4.1, PJ-5.1, PJ-6.1 2. Wilson Rockwell tester: PJ-4.2 3. Universal pendulum impact tester: PJ-4.3 4. Strain indicator: PJ-3.1 Project – 2.1 Tensile Test Preparation: Measure the dimensions of your specimens. Next Week Project – 2.1 Tensile Test Preview questions: 1. What are the definitions of Young’s modulus, shear modulus, bulk modulus and Poisson ratio? What are the relations between them? 2. What is the typical value of Young’s modulus for mild steel? 3. In the stress-strain curve from a tensile test, what are the yield point, strain hardening, tensile strength, and fracture strength? 4. What are Tresca criterion and Von Mises criterion?
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CE334L Week 2 (Mon. 8/29 – Fri. 9/2) Project – 2.1 Tensile Test Manufacture specifications for materials Material Manufacture No. Yield strength f y (ksi) Tensile strength f u (ksi) Elongation (%) Hot rolled steel C1045 HR 59 98 24 Cold rolled steel C1045 CF 90 103 14 Stainless steel 304 35 85 55 Cast iron Gray-20 (A48) NA 20-25 NA Aluminum 6061-T651 40 45 12 Report Requirements: 1. Draw stress-strain curves. Indicate the yield strength, tensile strength, and fracture strength in your stress-strain curve. 2. If possible, indicate the start of strain hardening in your stress-strain curve. 3. Tabulate the experimental values of Young’s modulus, yield strength, tensile strength, fracture strength, and elongation. Compare the test results with manufacture specifications. 4. Compare results from different materials, and discuss your findings. Project – 3.1 Strain Gauge, and Strain Gauge Transducer Preparation: Measure the dimensions of metal strip (cantilever beam) Assign different locations to affix the strain gauge for different groups. Assignment: 1. Study the preview questions for next week. 2.
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CE334L Lab Weekly Schedule Fall 2011 - CE334L Lab Weekly...

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