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Assignment Brief: Maximum force in test =1290N Scenario 1 Length between gauge marks at break =97mm You have secured a position as a trainee engineer within a research and development (R\&D) company that support a range of customers who require specialist engineering technical support. As part of your training, you have been asked to complete a range of tasks as set out below. These tasks cover a range of scientific data gathering methods along with an understanding of the characteristics and properties of engineering materials. You are required to complete the tasks set below and present your findings using a variety of methods. This activity will form part of your next appraisal. By comparing and contrasting results obtained from the testing with theoretical material properties you should be able to draw appropriate conclusions. To do this the laboratory report must be structured to A company has lately been receiving customer complaints about one of their products, the complaints being related to the mechanical parts they supply to a skateboard manufacturer. The supplied parts have been follow formal scientific methods thus ensuring your analysis can be relied upon to be scientifically sound. failing early in service and they have requested your company carries out independent testing on the samples You should ensure that your report includes the following elements: supplied along with the results from a customer survey from the complaints received by the skateboard manufacturer. a) Describe SI units and prefix notation, and ensure the correct SI units are used within this laboratory report. Task 1: b) Using appropriate software camy out the following tasks for each material: Tensile testing (destructive) has been carried out on the supplied parts by your company's inspection i) Plot an engineering stress-strain curve department and the results are sent on for your analysis. You are required to demonstrate your knowledge ii) Calculate the Young's Modulus and understanding by producing a formal laboratory report based on the tasks below. iii) Determine the approximate ultimate tensile strength, There are three sets of test data generated from Tensile tests and a Dye Penetrant test image see (figure c) Investigate and explain how the application of a scientific method impacts on the rigour of data 1) carried out on materials that may have been suitable for manufacture of the parts for a skateboard. analysis. The Tensile test specimens are: d) Compare quantitative and qualitative data gathered from the three specimens to theoretical data from authorised published resources and report your findings. Analyse the data fully and suggest, with reasons, what each material might be. You will need to investigate further parameters of each Specimen 1 - Ferrous metal, diameter of 9.50mm and original gauge length of 50mm. material to complete this task. Final diameter at fracture =6.00mm Task 2: Final length between gauge point =68.9mm Hysteresis in materials has implications for the design engineer, review elastic and electromagnetic hysteresis in different materials and relate your findings to the dye penetrant test image shown in Figure 1. Specimen 2 - Non-ferrous metal, width of 40mm, breadth of 2.5mm and original gauge length of 120 Figure 1: Dye Penetrant test image for Skateboard Truck Casting (source: www.mr-chemie,de) mm. Task 3: Specimen 3 - Non-metal, width of 12.61mm, thickness of 3.47mm and original gauge length of 50mm. a) Describe how the structure (chemical bonds, crystalline structure etc) of materials gives the materials