Designing Capable and Reliable Products Episode 1 docx

... why products fail 1. 4 Risk as a basis for design 1. 5 Designing for quality 1. 6 Designing for reliability 1. 7 Summary 2 Designing capable components and assemblies 2 .1 Manufacturing capability ... 19 94) The costs of quality 9 Preface Notation Abbreviations 1 Introduction to quality and reliability engineering 1. 1 Statement of the problem 1. 2 The costs of qua...

Ngày tải lên: 13/08/2014, 08:21

... Abbreviations 1 Introduction to quality and reliability engineering 1. 1 Statement of the problem 1. 2 The costs of quality 1. 3 How and why products fail 1. 4 Risk as a basis for design 1. 5 Designing ... manufacturing industry. In Chapter 4, a probabilistic design x Preface Designing Capable and Reliable Products Designing Capable and Reliable Products J....

Ngày tải lên: 06/08/2014, 15:21

... (Kotz and Lovelace, 19 98; Vasseur et al., 19 92). Making the product robust to variation is the driving force behind designing capable and reliable products, lessens the need for inspection and can ... a functional tool for decision making (Villemeur, 19 92). A technique which `quanti®es' safety is FMEA. 1. 4 .1 The role of FMEA in designing capable and reliable...

Ngày tải lên: 06/08/2014, 15:21

... the potential risks of failure and their consequences, both from normal use and fore- seeable misuse, is a key element in designing capable and reliable products (Wright, 19 89). 1. 5 Designing for quality The ... there is relatively little work Figure 1. 19 The FMEA input into designing capable and reliable products Designing for quality 25 Hooper, 19 86; Cart...

Ngày tải lên: 06/08/2014, 15:21

... sheet Figure 2 .15 Empirical relationships between (a) q m and C pk and (b) q m and C p (with 95% con®dence limits) 58 Designing capable components and assemblies metal, pipes, wires and a variety ... risk chart, s p 48 Designing capable components and assemblies Figure 2 .16 Assembly sequence diagram for a castor wheel 62 Designing capable components and assemblie...

Ngày tải lên: 06/08/2014, 15:21

... of: P f 30  10 ÿ6  2  9  10 10 2 :13  Again, this standard aligns with the costs of failure analysis below. Figure 2 .19 Typical FMEA Occurrence Ratings (O) 68 Designing capable components and assemblies Figure ... Assembly Variability Risk is given by: q a  h p  f p q a  1: 0  2 :11  2: 11 Therefore, q a 4  2 :11 However, once the cover, tab washer and bolt a...

Ngày tải lên: 06/08/2014, 15:21

... redesign analysis 94 Designing capable components and assemblies Figure 2. 41 Assembly sequence diagram for the solenoid end assembly design 10 0 Designing capable components and assemblies Figure ... requirements and will inevitably present problems using 92 Designing capable components and assemblies Figure 2.37 Telescopic lever assembly analysis for Design A 96 Desig...

Ngày tải lên: 06/08/2014, 15:21

... (%) t 2 =t 2 a  10 0 Variance contribution (%)  H2 = 2 a  10 0 1 1.2 1 0. 010 1. 7 0.002 0.06 0.04 2 1. 2 1. 1 0.250 1. 7 0.060 37.55 37.70 3 1 1 0.085 1. 7 0.020 4.34 4 .19 4 1. 2 1. 7 0.300 1. 7 0.072 54.07 ... 54.28 5 1 1 0.004 1. 7 0.0 01 0. 01 0. 01 6 1 1 0.080 1. 7 0. 019 3.85 3.78 Assembly tolerance, t a Æ0:408 mm Assembly standard deviation,  a  0:098...

Ngày tải lên: 06/08/2014, 15:21

... in Ayyub and McCuen (19 97), Edwards and McKee (19 91) , Kottegoda and Rosso (19 97), Leitch (19 95), Lewis (19 96), Metcalfe (19 97), Mischke (19 92), Rao (19 92), and Shigley and Mischke (19 89). Straight ... designer and manufacturer over product safety in order to avoid user injury or Figure 4 .1 The `true' margin of safety (adapted from Furman, 19 81 and Nixon, 19...

Ngày tải lên: 06/08/2014, 15:21

... F i  i N  1 z  È 1 SND F i  (x-axis) (N  52) ( y-axis) ( y-axis) 4 31. 0 1 1 0. 018 87 ÿ2.08 444.8 0 1 458.6 2 3 0.05660 1. 59 472.4 3 6 0 .11 3 21 1. 21 486.2 2 8 0 .15 094 1. 03 500.0 3 11 0.20755 ... ÿ0.82 513 .8 4 15 0.28302 ÿ0.57 527.6 5 20 0.37736 ÿ0. 31 5 41. 4 13 33 0.62264 0. 31 555.2 5 38 0. 716 98 0.58 569.0 5 43 0. 811 32 0.88 582.8 5 48 0.99566 1. 32 596.6...

Ngày tải lên: 06/08/2014, 15:21