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Equipment Used - Material Science - Exam, Exams of Materials science

Baddi University of Emerging Sciences and TechnologiesMaterials science

Key points are: Equipment Used, Ionic, Covalent, Metallic, Compressive Strength, Plasticity, Ductility, Hardness, Metals, Engineering Material

Typology: Exams

2012/2013

Uploaded on 04/13/2013

pankhudi
pankhudi 🇮🇳

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Cork Institute of Technology
Higher Certificate in Engineering in Biomedical Engineering – Stage 1
(National Certificate in Engineering in Biomedical Engineering – Stage 1)
(NFQ - Level 6)
Summer 2005
Materials Science
(Time: 3 Hours)
Answer any FIVE Questions Examiner: Mr. J. Calvey
All questions carry equal marks Mr. D. Tallon
Prof. P. McHugh
Q1. (a) Explain the differences between the following types of atomic bonds:
♦ Ionic
♦ Covalent
♦ Metallic (10 marks)
(b) Explain the difference between crystals and grains when referring to the structure of a metal.
(10 marks)
Q2. (a) With the aid of diagrams explain the essential difference between:
♦ Compressive strength
♦ Plasticity
♦ Ductility
♦ Hardness (10 marks)
(b) In relation to metals describe what is meant by the term Recrystallisation? (10 marks)
pf3

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Cork Institute of Technology

Higher Certificate in Engineering in Biomedical Engineering – Stage 1

(National Certificate in Engineering in Biomedical Engineering – Stage 1)

(NFQ - Level 6)

Summer 2005

Materials Science

(Time: 3 Hours)

Answer any FIVE Questions Examiner: Mr. J. Calvey All questions carry equal marks Mr. D. Tallon Prof. P. McHugh

Q1. (a) Explain the differences between the following types of atomic bonds: ♦ Ionic ♦ Covalent ♦ Metallic (10 marks) (b) Explain the difference between crystals and grains when referring to the structure of a metal. (10 marks)

Q2. (a) With the aid of diagrams explain the essential difference between: ♦ Compressive strength ♦ Plasticity ♦ Ductility ♦ Hardness (10 marks) (b) In relation to metals describe what is meant by the term Recrystallisation? (10 marks)

Q3. (a) Fig.1 shows a typical tensile test curve for an engineering material. What information about the properties of the material can be deduced from analyzing this data? (10 marks)

(b) Name three common hardness tests and with the aid of sketches describe how one is carried out. (10 marks)

Q4. (a) Give three reasons why there is need for Non-destructive testing of materials. (10 marks) (b) Describe one Non-destructive testing technique that could be used to check for porosity in a hip implant casting. Include in your answer: ™ Principle of operation ™ Equipment used ™ Advantages/Disadvantages of technique (10 marks)