مقایسهٔ روش‌ها

	آزمون عمر بسیار شتاب‌یافته (Highly Accelerated Life Testing - HALT)	شمارش جریان باران (Rainflow Counting)
حوزه	مهندسی قابلیت اطمینان	مهندسی قابلیت اطمینان
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1990s	1974
پدیدآور	William Leis and others	Tatsuo Endo
نوع	Product reliability testing methodology	Cycle counting algorithm
منبع بنیادین	Leis, B. N., & Stephens, D. R. (2011). Reliability methodologies for structural integrity assessment. Journal of Pressure Vessel Technology, 133(5), 051204.	Goodman, J. (1899). Mechanics Applied to Engineering. Longman, Green and Co.
نام‌های دیگر	HALT, Accelerated stress testing, HASS	Rainflow cycle counting, RFC
مرتبط	4	4
خلاصه	Highly Accelerated Life Testing (HALT) is a methodology for rapidly identifying design weaknesses and determining the margin between normal operating conditions and product failure. By applying extreme but non-destructive stress profiles (thermal, vibration, etc.), HALT accelerates the failure clock to reveal latent defects in weeks rather than years. Developed intensively from the 1980s onward and refined by practitioners in electronics and mechanical systems, HALT has become essential in accelerated product development and reliability validation.	Rainflow counting is a fatigue cycle counting method that converts a complex stress history into individual cycles for damage assessment. Developed by Tatsuo Endo and colleagues in 1974, it provides the most physically realistic representation of fatigue damage when combined with Miner's linear cumulative damage hypothesis. The algorithm has become the industry standard in reliability engineering and vibration analysis.