Unit 2 Materials Technology Specifying and describing properties

Unit 2: Materials Technology Specifying and describing properties Dr. Hatem Elaydi Engineering Technical English Islamic University of Gaza Feb. 17, 2016

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8 b. Read the following extract from Du. Pont's technical guide to Kevlar. 3 Dr. Hatem Elaydi, IUG, Spring 2016, ENGG 1305

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8 c. Find words in the text in Exercise 8 b to match the following definitions 1. toughness : the opposite of fragility 2. ………… : resistance to damage caused by friction 3. ………… : resistance to problems caused by temperature change 4. ………… : long-lasting 5. ………… : the opposite of heavy Answers 2 abrasion resistance 4 durable 5 Dr. Hatem Elaydi, IUG, Spring 2016, ENGG 1305 3 thermal stability 5 lightweight

Language note You will find the following vocabulary useful in this section. elasticity, toughness, abrasion resistance, thermal stability, lightweight, durable ideally, obviously, the key requirement, the last thing you want is …, a good degree of … explain what is meant by properties of materials elasticity : the ability to stretch some examples of properties of specific materials, for example steel (tough), polystyrene (lightweight). 6 Dr. Hatem Elaydi, IUG, Spring 2016, ENGG 1305

9 a. Match the automotive parts (l -5) to the descriptions (a-e). Answers 1 c 2 e 3 b 7 Basil Hamed 4 a 5 d

Read automotive applications of Kevlar. Complete the text using the automotive parts in Exercise 9 a. Answers 1 tires 2 drive belts 3 brake pads Dr. Hatem Elaydi, IUG, Spring 2016, ENGG 1305 8

Answers 4 bullet-resistant armor 5 sealing gaskets 9 Dr. Hatem Elaydi, IUG, Spring 2016, ENGG 1305

Language note Ideally: for the best results Obviously: It’s clear that the last thing you want: the worst situation the key requirement: the most important factor a good degree of: a lot of/ a high level of 10 Dr. Hatem Elaydi, IUG, Spring 2016, ENGG 1305

Homework: Do exercises 10 a, b and 11 b 11 Dr. Hatem Elaydi, IUG, Spring 2016, ENGG 1305