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Brake System Safety Analysis
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English
Abstract
An important new technique in safety engineering for complex systems is the fault tree analysis method. The results of a motor vehicle brake system safety analysis using the fault tree technique are described. The work is directed toward the identification and ranking of brake system failure modes which may be critical as accident causation factors. Safety criticality for each failure mode is defined as the product of probability of occurrence and severity of effect on vehicle control. Failure data for the brake system components are obtained from maintenance and repair records of a large automobile leasing fleet. An effect scale is developed using a method for pooling expert judgements to obtain the relative ranking of various brake faults as to accident causation potential. The fault tree structure is employed to combine probability and effect to obtain the safety criticality value of each fault. Results are interpreted in relation to federal safety standards and motor vehicle inspection requirements.
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Citation
Olsson, G., Mateyka, J., and Innes, J., "Brake System Safety Analysis," SAE Technical Paper 710593, 1971, https://doi.org/10.4271/710593.Also In
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