Assignment Requirements for Material Selection and Failure Analysis

Guidelines for Assignment Submission

1. The assignment should be your own work and should be properly type-written in your own words. Due to the novel virus and extraordinary condition students are allowed to do the assignment hand-written in your own words and then submit the file in Turnitin. It will be checked for plagiarism using Turnitin. Any plagiarism or copying from others will be dealt with through the university’s plagiarism procedures.

Similarity (plagiarism) level higher than 10% is highly suspicious.

2. The whole report should be 1500 words plus any relevant material. Any references to materials should be given in standard Harvard or Vancouver form.

3. Your assignment must be submitted electronically via blackboard by the submission time or before. The report should be contained in a Word document or pdf document. No other means of submission will be accepted.

4. Drawings can be done by hand or electronically. They can either be scanned / copied into your Word or pdf document

5. Any assignment submitted late, but within 5 working days of the deadline, will be given a maximum mark of 50%. Assignments submitted more than 5 working days after the deadline will not be marked, and a mark of 0% will be recorded.

6. Answer all the questions.

7. Students with special needs will be addressed on individual basis. (Candidates that may require any special requirement will be dealt with on a one-on-one basis which must be discussed with the module tutor/lead before the due date).

1. Able to communicate effectively on material selection with material scientists

2. Able to understand the implications of different modes of material failure

3. To understand the effects of composition and heat treatment on the properties of different types of material

4. To select materials to minimise the likelihood of component failure

[Hint 1]: You need to select any two parts of the crank shaft and use corresponding equations for the selected parts to derive the material index. You will have to decide your own dimensions for the selected parts and the constraints.

[Hint 2]: 40 percent of the total mark for this question will be assessed to the use of CES EduPack for the material selection.

You need to select the beam type and corresponding equations for the selected beam need to be used to derive the material index. You will have to decide your own dimensions fo the beam and the constraints.

[Hint 2]: 50 percent of the total mark for this question will be assessed to the use of CES EduPack for the material selection.

With the help of T-T-T diagram for eutectoid plain carbon steel answered in part (a) explain following parts

(i) Explain the process to quench a component to obtained full retained austenite. Indicate the temperature and times needed in the process.

(ii) What are the phase or phases resultant from the following process? Keeping a component made of eutectoid plain carbon steel at 750 °C for one hour and then cooling it to 450 °C temperature in 1 second, keeping it at that temperature for 10  seconds and cooling it to room temperature in another 10 seconds.

(iii) What are the phase or phases resultant from the following process? Keeping a component made of eutectoid plain carbon steel at 750 °C for one hour and cool it down to 300 °C, keeping it at that temperature for 10 seconds and cooling it to room temperature in another 10 seconds.