The City College of New York, CUNY<<<<ME 461ME 461 lab 10...revised and edited by EXPERTS

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Lab Experiment # 10 Tensile Testing of Polymers The City College of New York Department of Mechanical Engineering Mahbub Robin Section 1(2PS) Group 2 Prof. Jackie Li December 1, 2018 Objecti... ve: The objective of this experiment is to understand the behavior of the molecular structure of polymers when subjected to mechanical loading. We are also comparing the mechanical properties of polymer with those of plain-carbon steel and aluminum obtained in the first experiment. Equipment:  INSTRON testing machine with environmental chamber Materials:  Nylon  Acrylic Experimental Procedure: 1. For the Acrylic specimen in the environmental chamber at 60oC, similar procedures as experiment 1 should be followed from steps 1-4. 2. Next, the same procedure for the PMMA specimen at the room must be repeated. 3. After that, we compared the two curves each specimen at different temperature. 4. Step 2 of this experiment was repeated with slower displacement rate. We analyzed the effects of strain rate on the yield strength and ultimate strength of the polymers. 5. The entire experiment was repeated using different strain rates for Nylon at room temperature. 6. Finally, we compared the mechanical properties of polymers with those of metals in experiment 1. [Show More]

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