Session: 7D, Tuesday, 26 January 2010, 1330-1530
Moderator: Fred Schenkelberg, Ops A La Carte
The papers in this session explore innovations, advanced theories, and new ideas for conducting accelerated life testing. In this session, papers include a method for accelerating life of viscoelastic materials at sub-sea pressures, accelerated test designs (PRST, fixed time tests and others), modular approaches to testing, and an alternative step-stress test process.
Papers:
7D1 [0180] DEVELOPMENT OF ACCELERATION LIFE TESTING MODEL OF SUBSEA PRESSURE
by Amar Raja Thiraviam, Thomas Foley, Teledyne-ODI, and Linda Malone, Ph.D., University of Central Florida
Accelerated Life Testing (ALT) is an effective method of demonstrating and improving product reliability. ALT accelerates a given failure mode by testing at amplified stress level(s) in excess of operational limits. Statistical Analysis is then performed on the data, based on acceleration model to make life predictions at use level. The acceleration model thus forms the basis of accelerated life testing methodology. Well established models such as the Arrhenius model and the Inverse Power model.
7D2 [0174] ACCELERATED RELIABILITY DEMONSTRATION, RD, AND ASSURANCE, SPRT TESTS DESIGN by Milena Krasich, PE, Raytheon, UIDS
This paper explains the technical and mathematical methodology for acceleration of reliability qualification (fixed duration with and without replacement) and reliability assurance tests (SPRT) using physics, engineering rationale, and a mathematical approach in the test design and data analysis. This approach is with the intent to obtain meaningful and relevant information on reliability of products in their actual use and in a cost and schedule effective manner.
7D3 [0017] TEMPERATURE ACCELERATION MODELS IN RELIABILITY PREDICTIONS: JUSTIFICATION AND IMPROVEMENTS by Adamantios Mettas, Reliasoft Corporation, and Franck Bayle, Thales Avionics
Reliability predictions have been for a long time a difficult task because of the antagonism between high reliability level and the weakness of component manufacturer data. A solution to this difficulty is described in this paper using improved models.
7D4 [0136] STEP-STRESS ADT DATA ESTIMATION BASED ON TIME SERIES METHOD by
Li Wang, Xiaoyang Li, Ph.D., Bo Wan, and Tongmin Jiang, Beihang University
Step-Stress Accelerated Degradation Testing (SSADT) is commonly used to evaluate the lifetime of long lifetime and high reliability products.
Advancements in Accelerated Life Test (ALT) Theory, Models, and Practice
Session: 7D, Tuesday, 26 January 2010, 1330-1530
Moderator: Fred Schenkelberg, Ops A La Carte
The papers in this session explore innovations, advanced theories, and new ideas for conducting accelerated life testing. In this session, papers include a method for accelerating life of viscoelastic materials at sub-sea pressures, accelerated test designs (PRST, fixed time tests and others), modular approaches to testing, and an alternative step-stress test process.
Papers:
7D1 [0180] DEVELOPMENT OF ACCELERATION LIFE TESTING MODEL OF SUBSEA PRESSURE
by Amar Raja Thiraviam, Thomas Foley, Teledyne-ODI, and Linda Malone, Ph.D., University of Central Florida
Accelerated Life Testing (ALT) is an effective method of demonstrating and improving product reliability. ALT accelerates a given failure mode by testing at amplified stress level(s) in excess of operational limits. Statistical Analysis is then performed on the data, based on acceleration model to make life predictions at use level. The acceleration model thus forms the basis of accelerated life testing methodology. Well established models such as the Arrhenius model and the Inverse Power model.
7D2 [0174] ACCELERATED RELIABILITY DEMONSTRATION, RD, AND ASSURANCE, SPRT TESTS DESIGN by Milena Krasich, PE, Raytheon, UIDS
This paper explains the technical and mathematical methodology for acceleration of reliability qualification (fixed duration with and without replacement) and reliability assurance tests (SPRT) using physics, engineering rationale, and a mathematical approach in the test design and data analysis. This approach is with the intent to obtain meaningful and relevant information on reliability of products in their actual use and in a cost and schedule effective manner.
7D3 [0017] TEMPERATURE ACCELERATION MODELS IN RELIABILITY PREDICTIONS: JUSTIFICATION AND IMPROVEMENTS by Adamantios Mettas, Reliasoft Corporation, and Franck Bayle, Thales Avionics
Reliability predictions have been for a long time a difficult task because of the antagonism between high reliability level and the weakness of component manufacturer data. A solution to this difficulty is described in this paper using improved models.
7D4 [0136] STEP-STRESS ADT DATA ESTIMATION BASED ON TIME SERIES METHOD by
Li Wang, Xiaoyang Li, Ph.D., Bo Wan, and Tongmin Jiang, Beihang University
Step-Stress Accelerated Degradation Testing (SSADT) is commonly used to evaluate the lifetime of long lifetime and high reliability products.