برآورد طول عمر مفید باقیمانده با درنظر گرفتن اثر تنش‌های فرآیندی مختلف بر تخریب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجو دکتری رشتۀ مهندسی صنایع - تحقیق در عملیات و مهندسی سیستم، گروه مهندسی صنایع، دانشکدۀ صنایع، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران، ایران

2 استادیار گروه مهندسی صنایع، دانشکدۀ صنایع، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران، ایران

3 دانشیار گروه مهندسی صنایع، دانشکدۀ صنایع، دانشگاه آزاد اسلامی واحد تهران جنوب، تهران، ایران

چکیده

فرآیند پایش سلامت و پیش­بینی صحیح وقوع زمان شکست هنوز مورد توجه بسیاری از محققین قابلیت اطمینان سیستم‌ها است تا به‌دنبال استفاده مؤثرتر از تسهیلات موجود باشند. در تحقیق حاضر سیستمی تک‌مؤلفه­ای با چهار مکانیسم شکست کلی درنظر گرفته شده است که یکی از آن‌ها تخریب بیش از حد، در شرایط عادی عملیاتی و بقیه تسریع در فرآیند تخریب می‌باشند. در این مقاله، تخریب پیوسته با فرآیند گاما و دو عامل اخلال یا تنش گسسته و پیوسته درنظر گرفته شده­اند که سه مکانیسم مختلف شکست را در وضعیت طول عمر شتاب‌یافته ایجاد کرده، همچنین عامل اخلال گسسته از تابع توزیع پواسون و عامل اخلال پیوسته از تابع توزیع نرمال پیروی می‌کنند. این چهار وضعیت در مقاله حاضر بررسی شده و در هریک از آن‌ها، تخمین تابع قابلیت اطمینان و طول عمر مفید باقی مانده (پیش­بینی سلامت) تجهیزات به‌دست می‌آیند تا به توان احتمال وقوع شکست را در این سیستم تک‌مؤلفه­ای کاهش داد. یک رویکرد ترکیبی با استفاده از کنترل فرآیند آماری با روش تبدیل داده‌ها برای پایش عوامل اخلال به‌کار گرفته می‌شود. همچنین نشان داده شد که با معنادار شدن عامل یا عوامل اخلال پارامتر شکل توزیع گاما افزایش یافته، قابلیت اطمینان و طول عمر مفید باقی مانده کاهش می‌یابند و در پایان برای نشان دادن روش پیشنهادی یک مثال ارائه و حل شد

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Estimating Remaining Useful Lifetime Considering Effects of Different Process Stress on Degradation

نویسندگان [English]

  • Amirbahador Amirhosseini 1
  • Hossean Ghazanfari 2
  • Ashkan Hafezolkotob 3
1 PhD Candidate, Department of Industrial Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 Assistant Professor, Department of Industrial Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
3 Associate Professor, Department of Industrial Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
چکیده [English]

The process of health monitoring and correct prognosis of time to failure occurrence is still considered by many researchers of systems reliability to seek more effective use of available facilities. In the present study, a one-component system with four general failure mechanisms has been considered, one of which is excessive degradation under normal operating conditions and the other is accelerating the degradation process. In this paper, continuous degradation of the Gamma process is considered with two discrete and continuous noise factors or stresses, which create three different failure mechanisms in the accelerated lifetime condition. The discrete noise factor follows the Poisson distribution function and the continuous noise factor follows the normal distribution function. These four situations are investigated in the present paper and in each of them, the estimation of the reliability function and the remaining useful lifetime (RUL) or health prognosis of the equipment is obtained in order to reduce the probability of failure in this single-component system. A hybrid approach using statistical process control (SPC) with data transformation method is used to monitor the noise factors. It was also shown that with the significance of the noise factor or factors the scale parameter of the gamma distribution increases and, the reliability and remaining useful lifetime decrease. An example is solved at the end to illustrate the proposed method.

کلیدواژه‌ها [English]

  • Stochastic Modeling
  • Multivariate-Attribute Control Chart (MVACC)
  • Accelerated Degradation Analysis
  • Gamma Process

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نشریه پژوهش های مهندسی صنایع در سیستم های تولید
دوره 11، شماره 22
شهریور 1402
صفحه 1-17

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