ISSN:0748-8017    

DOI:10.1002/qre.4680040102

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680040103

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

ISSN:0748-8017    

DOI:10.1002/qre.4680040104

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

摘要:

AbstractThis paper attempts to define a quality engineering role in the product design process. The product design process is also placed within the modem quality system. Methods of experimentation and modelling in design are emphasized and an example is described.

ISSN:0748-8017    

DOI:10.1002/qre.4680040105

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

摘要:

AbstractA novel mechanical technique for decapsulating plastic semiconductor components has been developed. The technique is extremely easy to use, has a high success rate, and is superior in all respects to previously‐described mechanical techniques which give inconsistent results. A significant advantage over alternative chemical techniques is that corrosion products on the die surface are retained.This paper describes the new technique and shows examples of new and corroded components that have been successfully decapsulate

ISSN:0748-8017    

DOI:10.1002/qre.4680040106

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

摘要:

AbstractIn a study conducted for the USAF Rome Air Development Center to improve reliability prediction for spacecraft approximately 2600 incident reports on 300 spacecraft (representing 100 programmes) that were launched between the early 1960s and January 1984 were analysed. The causes of the spacecraft failures and the severity of the observed effects are examined.The classification of causes is explained in detail and examples of each type of failure are provided. Differences in the relative frequency of certain causes between pre‐1977 missions and later ones are analysed and some significant trends are identified. The association of spacecraft subsystems with the major causes of failure is investigated. Finally, the severity of the failure effects due to the identified cause categories is discussed. A significant finding is that a large fraction of the incidents is due to design and environmental causes rather than to random failure

ISSN:0748-8017    

DOI:10.1002/qre.4680040107

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

摘要:

AbstractApproximations are given relating the shape parameter of the two‐parameter Weibull distribution to the coefficient of variation of a complete (uncensored) data set. The accuracy of the approximations over 0.4<β<5 is such as to give adequate estimates in most practical applications. For 0‐25<β<0.4 and 5<β<10, the estimates from the approximation may provide initial values for iterative procedures using moments, maximum likelihood, minimum x2, etc.The simplicity of the functions means that jack‐knife methods may be used to obtain standard errors of estimates, including the scale parameter (9) where a suitable gamma function approximation is inco

ISSN:0748-8017    

DOI:10.1002/qre.4680040108

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

摘要:

AbstractDevice failures can be classified as event‐dependent, time‐dependent, and a combination of the two, event/time‐dependent failures. Early life failure are dominated by event‐dependent failures, i.e. Electrostatic Discharge (ESD) failures, and mechanical failures (bonds, cracks, etc.) that result from a stress event. Test and failure analysis results supporting the above are reviewed. This paper was presented at the 1985 Semiconductor Device Reliability NATO W

ISSN:0748-8017    

DOI:10.1002/qre.4680040109

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

摘要:

AbstractThe availability of good data is crucial to good reliability prediction. Two contrasting cases are noted: (1) when a large amount of experience with components is available but data are not collected and (2) when systems are so innovative that no reliability experience is available. The relationship of reliability to incompleteness of knowledge and the acausal nature of statistical/probabilistic models is discussed. The difficulty of assigning any absolute similarity between any one component and the members of a particular reliability set is outlined. It is concluded that engineering judgement must always play a vital role in reliability estimation.

ISSN:0748-8017    

DOI:10.1002/qre.4680040110

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY

摘要:

AbstractSubstantial laboratory and field experience has indicated that, owing to the large number of wave stress cyles experienced by offshore steel structures, fatigue cracking should be the main consideration of structural reliability assessment.This paper presents the latest implementation of probabilistic fracture mechanics modelling for fatigue reliability analysis of the most common offshore structural component, the welded tubular joints. Coupled with the recent findings in inspection reliability, effective maintenance and integrity monitoring policies can be formulated.Examples of many practical situations have been analysed to illustrate the applications of the methodology.

ISSN:0748-8017    

DOI:10.1002/qre.4680040111

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1988

数据来源: WILEY