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 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.

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.
 

Sparing Criteria. Clear Management Approach (1984)

Z. Bluvband, Israel Aircraft Industries 

S. Shahaf, Israel Aircraft Industries

 
The ability to optimize high-level logistics management decisions depends on clearly defined top criteria which comprehensively reflect the end effect. The existence of a link between top criterion (such as DR) and spares quantities allocation, provides management with an effective view of the impact on the logistics system from a top-down aspect. This approach preserves the main principle that the management level (making the decisions) must define top level requirements only rather than having to go into details at lower levels. The objective of this present research was to link spares allocation to definition of Availability and DR as top criteria with the aid of convenient and clear logistics parameters.