Modeling and Analysis of Performance Degradation Data for Reliability Assessment: A Review

Abstract

Reliability engineering plays an important role in the design, manufacture, maintenance, and replacement of industrial products. Over the last few decades, accelerated degradation testing (ADT) has been largely utilized to shorten test durations, reduce the samples needed, and provide sufficient degradation data to ensure the effective reliability assessment of the concerned products. Meanwhile, performance degradation modeling has been recognized as an essential approach to help researchers and producers understand the health conditions of the deteriorating systems. However, the diversity in reliability tests, degradation models, and statistical analysis techniques has increased the difficulty in selecting appropriate reliability assessment methods in specific scenarios. Besides, there are no systematic reviews focused on modeling and analysis of performance degradation data. Therefore, this paper aims to (1) present ADT fundamentals, including the basic theory, ADT methods, accelerated stress variables, type of acceleration models, as well as ADT optimization, (2) comprehensively review current states and future challenges in degradation modeling, (3) discuss the problem of model mis-specification and compare different approaches for parameter estimation, (4) highlight future opportunities and possible directions deserving further research.

Analysis of degradation models for modelling the lifetime heterogeneity of complex systems

“…In Tabelle 1 sind die Arten von Degradationsmodellen mit einigen Beispielen samt zugehörigen Quellen sowie Vorund Nachteilen übersichtlich dargestellt. [15], [20] In Reviews zur Klassifikation von Degradationsmodellen werden weitere detailliertere, alternative und teils widersprüchliche Einteilungen verwendet [12][13][14][15], [18][19][20][21][22]. So wird die Arrhenius-Gleichung als Ansatzfunktion den physikalischen Modellen zugeordnet [22], in der Anwendung wird dieser Ansatz aber häufig für empirische Modelle genutzt [8].…”

Extended Periodic Inspection Policies for a Single Unit System Subject to Shocks

“…The future research emphasis is to extend the assumption to that where inspection may be imperfect. In addition, for degradation systems whose failure distribution is complex in terms of degradation-thresholdshock (DTS) theory [36,37,38], seeking a proper inspection policy analytically is another significant direction.…”

Modelling of Environmental Ageing of Polymers and Polymer Composites—Durability Prediction Methods

“…Accelerated test methods (also called accelerated degradation tests) are testing programs that accelerate property degradation by subjecting it to conditions outside its normal service range [ 13 , 14 ]. In accelerated testing methodology, degradation is carried out in an intentional and controlled way aimed at effective reliability estimation in conjunction with modelling while reducing the time required for experimental testing [ 15 , 16 ]. The service lifetime is predicted by modelling the evolution of the critical mechanical characteristics (e.g., strength, stiffness) under accelerated degradation and establishing safety and reliability criteria.…”