Reference no: EM133105547
Unit 3 Engineering Science - HNC ENGINEERING (Mechanical Engineering)
Assignment - Characteristics and properties of engineering materials using scientific methods
Learning Outcome 1: Examine scientific data using computational methods
Learning Outcome 2: Explore the characteristics and properties of engineering materials
Scenario Update
As more kayaks are acquired, it is necessary to gain space by suspending some of them from the framework of the temporary shelter using elastic "bungee" type straps or similar.
Three large coils of potentially suitable elastic strap material have been located in a store shed. To confirm which of the strapping materials would be most suitable, load vs extension tests were carried out on 300mm length samples of each of them in the on-site workshop / laboratory.
Values for increasing and decreasing loads for each of the three samples are recorded in the tables below.
Question 1: You are required to write a laboratory report for the work carried out using a recognised scientific format.
Although you are not carrying out the practical work yourself, your report should include a description of how the work would be carried out.
The lab report must include suitable graphic presentation of the data obtained.
The discussion and analysis of the results must include aspects based on your own assessment of the results and comparisons of the graphs.
Your discussion should also be based on further research into what scientific and engineering information can be obtained from the graphs.
Remember that to complete the "scientific method", your discussion should include a "look forward" into possible future investigation / testing of the samples, and /or how the current testing method could be improved.
The load test results for the three samples are given on the next page:
Question 2: When you have completed the part 1 report, look through your assignment 2(a) for an aspect that resembles the results you have obtained for the load testing of the strapping materials. Compare the similarities and differences of the two aspects.
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Loading (N)
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Length of Sample 1 (mm)
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Length of Sample 2 (mm)
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Length of Sample 3 (mm)
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0
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300.0
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300.0
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300.0
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0.25
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300.2
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300.5
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|
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300.6
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0.50
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300.6
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301.0
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301.3
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0.75
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301.1
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301.7
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|
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302.2
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1.00
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301.6
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302.4
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|
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303.1
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1.25
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302.4
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303.2
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|
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304.2
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1.50
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303.2
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304.2
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305.5
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1.75
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304.2
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305.4
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|
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306.8
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2.00
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305.6
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306.6
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308.2
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2.25
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307.7
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307.7
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|
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309.2
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2.50
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314.0
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308.6
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310.1
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Unloading
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2.50
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314.0
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308.6
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310.1
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2.25
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313.9
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308.2
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309.8
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2.00
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313.8
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307.8
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309.5
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1.75
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313.6
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307.3
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309.0
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1.50
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313.2
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306.7
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308.4
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1.25
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312.5
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306.1
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307.7
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1.00
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311.4
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305.4
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|
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306.9
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0.75
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309.8
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304.3
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305.9
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0.50
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307.4
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303.0
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304.7
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0.25
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304.1
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301.5
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303.4
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0
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300.0
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300.0
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302.1
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Attachment:- Characteristics and properties of engineering materials using scientific methods.rar