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Herbert Hecht
SoHaR Incorporated, USA
 
Fault tolerance is an essential methodology for digital systems, particularly for those that serve applications where failure has safety implications or where interruption of operations imposes serious financial penalties. There is no single fault tolerance technique that suits or is optimal in all circumstances. A taxonomy of fault tolerance techniques is presented and branches and leaves of this taxonomy are described in terms of areas of applicability, effectiveness of fault tolerance, and cost of implementation. Gaps in coverage and deficiencies of an individual technique can be overcome by employing a hierarchical structure of fault tolerance provisions, also referred to as defense-in-depth. The large selection of techniques that have been described and the continuing improvements provided by studies in the field support an encouraging outlook.
 
Lev Klyatis

Sohar Inc., USA

 

This paper will discuss the problem with successful predicting of product performance (reliability, quality, durability, safety, recalls, profit, life cycle cost, and other interconnected technical and economic components of performance). The best component for analyzing the performance situation during service life, including predicting, is recalls, because, first, recall accumulates the safety, reliability, durability, quality, profit, and total economic situation. And second, there is open official and objective information about the number of recalls from Government (National Highway Traffic Safety Administration and others) , as well as companies-producers.

Lev Klyatis
Sohar Inc., USA
 

There are no standards that directly consider practical reliability testing technology (methods and equipment). This void needs to be filled. The SAE G-11 division has approved the development of six new standards to fill this void. This paper discusses these six standards: 1) Reliability Test-Glossary; 2) Reliability Testing-Strategy; 3) Reliability Testing-Procedures; 4) Reliability Testing-Equipment; 5) Reliability Testing-Statistical Criteria for Comparison of Reliability Testing Results and Field Results; 6) Reliability Testing-Collection, Calculation and Statistical Analysis of Reliability Testing Data, Development Recommendations for Improvement of Test Subject Reliability, Durability, and Maintainability.

 

 

Lev Klyatis
Sohar Inc. USA
 

This paper will discuss the first two standards in the six-part series of SAE International reliability testing documents that are being developed by the SAE G11 Reliability Committee. These two documents attempt to standardize the glossary and strategy associated with reliability testing technology.