کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
565441 1451859 2016 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation reliability modeling based on an independent increment process with quadratic variance
ترجمه فارسی عنوان
مدل سازی پایایی تخریب بر اساس یک فرایند افزایش مستقل با واریانس درجه دوم
کلمات کلیدی
آزمون تخریب، تحلیل قابلیت اطمینان، عدم توزیع زمان، روند افزایش مستقل، برآورد پارامترهای یک مرحله، تابع واریانس درجه دو
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
چکیده انگلیسی


• Construct a degradation model by an independent increment process with general quadratic variance.
• Investigate a one-stage parameter maximum likelihood estimation approach.
• Derive the closed forms of failure time distribution and its percentiles.

Degradation testing is an important technique for assessing life time information of complex systems and highly reliable products. Motivated by fatigue crack growth (FCG) data and our previous study, this paper develops a novel degradation modeling approach, in which degradation is represented by an independent increment process with linear mean and general quadratic variance functions of test time or transformed test time if necessary. Based on the constructed degradation model, closed-form expressions of failure time distribution (FTD) and its percentiles can be straightforwardly derived and calculated. A one-stage method is developed to estimate model parameters and FTD. Simulation studies are conducted to validate the proposed approach, and the results illustrate that the approach can provide reasonable estimates even for small sample size situations. Finally, the method is verified by the FCG data set given as the motivating example, and the results show that it can be considered as an effective degradation modeling approach compared with the multivariate normal model and graphic approach.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volumes 70–71, March 2016, Pages 467–483
نویسندگان
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