Calculation of life characteristics of insulation

Whitman, L. C.; Doigan, Paul

doi:10.1109/ee.1954.6438826

Cited by 2 publications

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“…Especially, Nelson [14] cited Whitman and Doigan [20] for the justification of the simple constant-rate relationship and the lognormal distribution of the performance characteristic for a certain type of insulation material.…”

Section: Assumptionsmentioning

confidence: 99%

Optimal Design of Step-Stress Degradation Tests in the Case of Destructive Measurement

Park

Yum

Balamurali

2004

Quality Technology & Quantitative Management

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In this article, optimal accelerated degradation test plans under step-stress loading (step-ADT plans) are developed under the assumptions of destructive testing, a simple constant-rate relationship between the stress and the performance of a unit, and a cumulative exposure model for the effect of changing stress levels. As an optimization criterion, the asymptotic variance of the maximum likelihood estimator of the th quantile of the lifetime distribution at the use condition is adopted, and the stress levels, the proportion of units measured at each test point, and the stress changing time are optimally determined. Sensitivity analysis and sample size determination procedures are also illustrated with an example. Finally, the optimal step-ADT plan is compared with the corresponding optimal ADT plan under constant-stress loading in terms of statistical efficiency and the total amount of testing time. Computational results indicate that the proposed step-ADT plan is more economical in terms of testing time if only one test equipment can be employed. q

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Section: Assumptionsmentioning

confidence: 99%

Optimal Design of Step-Stress Degradation Tests in the Case of Destructive Measurement

Park

Yum

Balamurali

2004

Quality Technology & Quantitative Management

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“…4) Die Abweichungen der Linien im Zeitstandschaubild von der Geraden lassen sich einerseits auf Gefugevergroberung, andererseits auf die genaue Form der Spannungsabhangigkeit der Kriechrate zuruckfuhren. 5) Fur die Auswertung von MeBdaten, die bei verschiedenen Temperaturen und Zeiten gewonnen wurden, empfiehlt sich die Auftragung gegen einen Parameter M, der mit der temperaturkompensierten Zeit f 3 nach Dorn zusammenhangt.…”

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Wärmealterung und Grenztemperatur von organischen Isolierstoffen

Wörner

Kabs

1971

Materialwissenschaft Werkst

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Calculation of life characteristics of insulation

Cited by 2 publications

References 0 publications

Optimal Design of Step-Stress Degradation Tests in the Case of Destructive Measurement

Optimal Design of Step-Stress Degradation Tests in the Case of Destructive Measurement

Wärmealterung und Grenztemperatur von organischen Isolierstoffen

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