Introduction: In this lab, testing how much can a piece of 6061 T6-aluminum as w

Question

Introduction: In this lab, testing how much can a piece of 6061 T6-aluminum as well as two samples of plastic withstand of stress is done following a given procedure. Moreover, a background about the test and the theory behind the expected reaction of the tested materials were provided. In addition, a set of equations were attached to the theory context as they are required to pursue the calculations task. As well as a procedure was shown in a visual context, equipment of the test was given for future use instructions. Furthermore, pre-test measurements were taken in order to observe how far off did the sample stretched and changed. Post-test measurements were obtained right after the test done of the three samples. Graphs are drawn and studied to validate at what point the sample stood the force of the most, followed by calculations proving the point. Finally, the conclusion summed up the lab procedure in whole and compared the three samples results with published ones with a discussion of some causes and effects of the materials

Explanation / Answer

The strength of materials can be measured by using Tensile test. In this test the stress vs strain of the material is obtained and plotted which helps in interpreting the mechanical properties of the material. This test is destructive in nature that is the sample is usually plastically deformed for even taken up to fracture limits resulting in permanent deformation of the sample. It is one of the most accurate tests involved in measuring strength of materials, especially with new advanced machines which carry out this test. The machines now integrated with computers enable a varied range of speed and accuracy of the experiment resulting in flexible testing precision depending on requirement. A standard size sample is used in this test to find stress strain plot. The failure point of an object during the procedure is measured using a video extensometer, a camera. In this lab, the stress bearing capacity of samples of aluminum and two plastics were measured by applying tensile forces. Before the test, the lengths of the samples were measured to enable difference in lengths to be measured after the experiment and clearly see the strains. The video extensometer converted physical changes into digital data and fed it into the computer using which the graphs were plotted. In the end, the results were calculated based on which conlusions were derived. Also, comparison of standard data of the three samples was done with the results obtained.

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