Proceedings of the IEEE Workshop on Accelerated Stress Testing & Reliability (ASTR), Austin, Texas, October 3-5, 2005

Identification and Utilization of Failure Mechanisms to Enhance FMEA and FMECA

S. Ganesan, V. Eveloy, D. Das, and M.G. Pecht
University of Maryland
College Park, MD 20742


Failure mechanisms are the processes by which physical, electrical, chemical and mechanical stresses induce failure. Knowledge of the failure mechanisms that cause product failure is essential to design and qualify reliable products. The standard Failure Modes and Effects Analysis (FMEA) and Failure Modes, Effects and Criticality Analysis (FMECA) procedures do not identify the product failure mechanisms and models, which limits their applicability to provide a meaningful input to critical procedures such as virtual qualification, root cause analysis, accelerated test programs, and to remaining life assessment. This paper proposes a new methodology, namely Failure Modes, Mechanisms and Effects Analysis (FMMEA), which enhances the value of FMEA and FMECA by identifying high priority failure mechanisms and failure models. High priority failure mechanisms determine the operational stresses, and the environmental and operational parameters that need to be controlled. Models for the failure mechanisms help in the design and development of the product. The proposed FMMEA methodology is applied to an electronic circuit board assembly mounted in an automotive underhood environment.

Complete article is available to CALCE Consortium Members.

© IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.


[Home Page] [Articles Page]
Copyright © 2005 by CALCE and the University of Maryland, All Rights Reserved