Biomedical Engineering Exam: Materials Science - Summer 2007, Exams of Materials science

Download Biomedical Engineering Exam: Materials Science - Summer 2007 and more Exams Materials science in PDF only on Docsity! Cork Institute of Technology Bachelor of Engineering in Biomedical Engineering – Stage 1 (NFQ Level 7) Summer 2007 Materials Science (Time: 3 Hours) Answer any FOUR Questions Examiner: Mr. J. Calvey All questions carry equal marks Mr. M. Murphy Prof. P. McHugh Q1. (a) Explain what is meant by each of the following terms and give one example of each: ♦ Compound ♦ Mixture ♦ Allotropy (b) With the aid of sketches, describe the grain structures you would expect to find in a large casting as a result of different metal cooling rates. (25 marks) Q2. (a) With the aid of diagrams explain the essential difference between: ♦ Compressive strength ♦ Plasticity ♦ Ductility ♦ Hardness (b) Explain why there is need for Non-destructive testing of materials. (25 marks)