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Track 2 Session 12
1:00 to 2:00 p.m. Thursday June 19, 2008
Power of the P-Diagram in Robust Reliability
Planning and Execution
The parameter diagram (p-diagram)
schematically depicts the way a product delivers its intended
function by looking at the relationship between signal factors
(input), control factors (design parameters), noise factors and the
measured response and error states (or the failure modes). At EATON
Corporation, the p-diagram is effectively implemented, in
conjunction with other Design for Six Sigma (DFSS) and Design for
Reliability (DFR) tools, early in the product development cycle to
develop more robust product designs. The p-diagram establishes the
base for an efficient and robust DFR plan and execution, FMEA
development, DOE/RSM planning and Parameter/Tolerance design. The
p-diagram also helps as an input to preparation of a Robust Design
Verification Plan.
In this presentation, the authors examine the value that the p-diagram brings
to robust reliability planning and execution and highlights the
potential benefits with some examples.
Key Words: DFR, DFSS,
p-Diagram, FMEA, Reliability Management, Reliability Plan,
Reliability Requirements Setting, DOE Planning, DVP&R, Robustness
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