Plastics Engineering 3E Episode 14 ppsx

... so 4x 20 1 .142 +1 AR=m{ (1 .142 -1)-0’4} AR = 0.29 ITM (b> AR = a.R.AT = 143 °C 0.29 loo x 10-6 x 20 AT = Hence the nylon bush would need to be cooled by 143 °C to achieve ... specimen fracture = 0.44 + 3.947 = 4. 414 J Remaining energy = 11.036 - 4. 414 = 6.6218 J = 0.15 m 6.6218 So height of swing = - 44 .145 (2.59) K = p(m~)&a...

Ngày tải lên: 13/08/2014, 09:20

... 3.17 Fatigue Behaviour of Reinforced Plastics In common with metals and unreinforced plastics there is considerable evidence to show that reinforced plastics are susceptible to fatigue. ... material. In a cylinder (the CHAPTER 4 - Processing of Plastics 4.1 Introduction One of the most outstanding features of plastics is the ease with which they can be processed. In...

Ngày tải lên: 13/08/2014, 09:20

... 230 180 210 250 300 290 230 30 40 50 40 60 50 90 80 60 90 135 130 140 130 160 200 240 140 1.1 10-7 1.1 10-7 0.8 10-7 1.2 10-7 0.9 x 10-7 0.9 10-7 1.0 10-7 1.3 ... 2(0.3) tan 1.5 = 6.9 MNh2 Also from (5.46) Now t5 = 14 s-l so from Fig. 5.3 02 = 3.15 x lo6 Nm-2 (ie 2.25 x 16 x 14) = 1.1 MN/m2 Section C: Although this secti...

Ngày tải lên: 13/08/2014, 09:20

... which Contents 0 General properties of plastics 0 of plastics Mechanical behaviour of c plastics 0 Analysis of polymer melt Structure of plastics and Solutions to An imprint of ... principles wkhout the unduly complex levels of mathematics or chemistry set plastics in their proper context as engineering makri This textbook pioneered the approach whereby bo...

Ngày tải lên: 13/08/2014, 09:20

... 74 81 84 95 95 103 110 116 119 121 121 127 131 134 136 137 138 140 142 142 143 145 145 147 148 150 152 152 154 168 168 168 xiv Preface to the Second Edition encouraged ... R.J. (Roy J.) Plastics engineering. 3rd ed. 1. Plastics I. Title 668.4 ISBN 0 7506 3764 1 Library of Congress Cataloguing in Publication Data Crawford, R.J. Plastics en...

Ngày tải lên: 13/08/2014, 09:20

... (polyester) EPOXY 1040 142 0 141 0 1180 1280 1190 1 200 1060 1140 1380 1300 140 0 1360 1630 1690 140 0 1150 1270 1370 142 0 905 1240 1050 920 950 2100 140 0 1300 1080 1800 ... alloy Zinc 1040 142 0 141 0 1180 1280 1190 1200 1060 1 I40 1380 1300 140 0 1360 1630 1700 140 0 1150 1200 1270 1370 142 0 1340 905 1240 1050 920 950 2100 1...

Ngày tải lên: 13/08/2014, 09:20

... plastics but fortunately an empirical relationship has been found to 64 Mechanical Behaviour of Plastics effect will be very small. Thus the above analysis is perfectly acceptable for engineering ... Mechanical Behaviour of Plastics 57 For some plastics, particularly nylon, the moisture content can have a signifi- cant effect on the creep behaviour. For such plastics, creep...

Ngày tải lên: 13/08/2014, 09:20

... length. 116 Mechanical Behaviour of Plastics Modulus ’ 2 .14 Time-Temperature Superposition It has been shown throughout this chapter that the properties of plastics are dependent on time. ... problem. For the purposes of engineering design the expression provides results which are sufficiently accurate for most purposes. In addition, Mechanical Behaviour of Plastics 11...

Ngày tải lên: 13/08/2014, 09:20

... 0.7-1.1 1-4 0.75 140 0.13 0.08 0. 014- 0.023 0.005-0.008 0.12 0.125 0.025-0.25 0.06 0.02-0.5 0.15-0.2 0.02 0.03-0.13 0.01 0.5 17 6 0.2-0.5 0.02-0.06 14 16 5-100 3.6 0.4-2.7 ... sharp notch) apply during the Izod and Charpy testing of a plastic. Mechanical Behaviour of Plastics 141 I i i d '1 Fig. 2.74 Qpical fatigue behaviour of acetal at 5 Hz...

Ngày tải lên: 13/08/2014, 09:20

... unidirectional composite loaded axially Global '1 axis -14 MNlm2 -5 1 -5 MN/m2 A - 14 MWm2 Fig. 3 .14 Unidirectional carbon fibre single ply composite Mechanical ... which the properties of plastics are influ- enced by the level of fibre content. Full details of the forms in which reinforcing fibres are available for inclusion in plastics are given in...

Ngày tải lên: 13/08/2014, 09:20