SFTY 335 Week 2 Assignment Help

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        SFTY 335 Week 2 Assignment Help |  ERAU

After reviewing the module presentation and materials, complete the following activity. In addition, you will want to review the following reading, which will help you with this activity:

Tensile Test (Davis, J., 2004)

·         Chapter 1 - Introduction to Tensile Testing (only read pages 1-7).

·         Chapter 2 - Mechanical Behavior of Materials under Tensile Loads (only read pages 13-18).

 This eBook is available through the Hunt Library.

When completing the exercise problems, where appropriate, be sure to show all of your work (e.g. calculations) so the instructor can see where you may have made a mistake. If there are minor mistakes, you will receive partial credit for the question. Partial credit may be awarded even if the final answer isn’t correct.

You can either show your solution to the problems using Word and an application like MathType or handwrite your solutions and scan/take a photo of the results with a smartphone or tablet and submit as a jpeg or PDF.  Please review the MathType and Equation Editor Information page located in the Course Specific Information module area.

Save your assignment using a naming convention that includes your first and last name and the activity number. Do not add punctuation or special characters. Be sure to include your name in your document and files. This assignment is due by the end of the module week.

Complete the following:

1.      Based upon your weight (lbs), calculate the internal stress for the previous rope climber example shown for a half-inch diameter rope with a material strength of 25,000 psi. Will the rope break? Calculate the Factor of Safety (F.S.) for this case. If I weigh 235 lbs, can I safely join you on the rope?

2.      For the Orlando Airport shuttle emergency stop example discussed, how many half inch diameter, A36 steel, shear bolts would be needed if the shuttle imparts a force of 100,000 lbs on the plunger (instead of the initial example with 75,450 lbs)?

3.      Assume all other assumptions hold. Hint: the number of bolts will be greater than 16 since the load increased.

4.      Compare and contrast the concepts of external load, internal stress, and material strength and classify their "importance" on structural failure.

5.      Select a simple structure or a component of a complex system (e.g. landing gear off an aircraft) that you have personal access to near your home. Using the concepts of material strength and applied stress, illustrate under what conditions the structure will likely fail. Take a picture of the structure and include it in your submission.

6.      Pick a material (e.g. steel, concrete, chewing gum, glass rod, wooden 2x4) and sketch a rough stress-strain diagram for the material. Label important features (e.g. UTS, elastic limit) and discuss how engineers would use the information when designing a structure.