A Novel FMECA Approach

November 5, 2011 | Leave a Comment

A client developed a novel FMECA technique that I think has much to recommend it. A key difference lies in the way “Occurrence” is handled. Generally, when we develop a FMECA, we assign a somewhat-arbitrary number (1 – 10) to the occurrence factor. In this approach, the failure rate (in FIT’s) is used for each [...]

Aug

2

DFMEA acc. to VDA – 5 steps approach

August 2, 2011 | 2 Comments

VDA-German Automotive Industry Society describes process of system FMEA building. I would like to highlight 3 key areas of VDA approach: Functional analysis Failure analysis The process consists from following steps: Product breakdown to system levels Functional description of system Failure Analysis Risks Evaluation Risk Optimization First step is about definition of system. Team breakdown [...]

Jun

2

FMEA – DETECTION RATING CONFUSION

June 2, 2011 | Leave a Comment

FMEA is great tool used in many quality, reliability, and risk analysis processes. It is not a highly sophisticated tool and is certainly not technically complex. As a reliability tool, the FMEA is extremely effective in identifying the risks of greatest concern and thus focusing design and test activities to eliminate that risk or reduce [...]

Apr

11

FMEA – Design or Process?

April 11, 2009 | Leave a Comment

DFMEA is a Design FMEA performed on the product design PFMEA is a Process FMEA performed on the manufacturing process. Both are very useful and both techniques should be utilized. There is correlation between the two – one analysis could definitely influence the other, and often times a mitigation for a Design FMEA may be [...]