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Design FMEA (DFMEA) Basics - Help needed

P

p v k Raju

#1
Hi
This is Krishnam Raju and I would like know the Design FMEA. Could you please help me for making Design FMEA. I Know Process FMEA but DFMEA new for me. Any body have in this subject. Please help me.

For example One product is thier (more then two parts assembled)
for that How do the DFMEA. Is it required for all parts for DFMEA or total prodcuct(Assembled part-end product) is required DFMEA.

Any example for DFMEA please suggest me.

Thanks & Regards,
PVK Raju
 
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#4
For example One product is thier (more then two parts assembled)
for that How do the DFMEA. Is it required for all parts for DFMEA or total prodcuct(Assembled part-end product) is required DFMEA.
I take the following approach with assemblies of multiple parts/subsystems:

  1. Perform a System FMEA for the top level product. Focus on the FUNCTIONS (not the hardware) of the product and their failure modes.
  2. Identify the high risk subsystems (or sub-assemblies) of the next lower level. This risk assessment is made using Severity, Criticality (SEv x OCC) and RPN in that order.
  3. Perform a Subsystem(Sub-assembly) FMEA on these high risk subsystems (not all of them). At this level you may choose to use either the functional or the hardware approach.
  4. Repeat 2 & 3 for the next lower level as needed. This could be taken to the individual component level, but is not normally done unless the severity or possibly the criticality warrants it.
 
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