P-Diagram (Parameter Diagram) in FMEA Preparation

[antoine.dias]

Where does the " P " stand for in " P-diagram "?

A P-diagram is used as preparation for FMEA to show the interfaces and the " noise factors " of a system.

Best regards,

Antoine

[Howard Atkins]

I have searched all the Ford material on FMEA, there are plenty references to P diagrams but no explanation, sorry
Any one else?

[antoine.dias]

Thanks Howard,

That why I asked the question in the first place because I did not find it myself while running through the material.

Best regards,

Antoine

[Bill Ryan - 2007]

Never heard of it before but my best guess would be "Process diagram" (whatever that might be in Ford's terminology).

[Howard Atkins]

I was sent this link P-Diagram - in brief

[antoine.dias]

Thanks Howard for the 2 good links.

Best regards,

Antoine

[Ralf Fritzsche]

Gentlemen,

I am working for FORD Motor Company and just wrote an article about p-daigrams.
It has been published in the ATZ worldwide June 2006.
I will try to attach this article as a PDF-File.

Regards

Ralf Fritzsche

[Alan Greatbatch]

Hi guys, Google to the rescue as usual, a P-Diagram is a Parameter diagram.

The Parameter Diagram (P-Diagram) takes the inputs from a system/ customer and relates those inputs to desired outputs of a design that the engineer is creating also considering non-controllable outside influences. The P-Diagram, is a useful tool in brainstorming and documenting:

* Signal Factor(s)
* Response Variable or Ideal Function
* Control Factors, and
* Noise Factors
* Error States (or the failure modes)

A P-Diagram is essentially a schematic diagram that encompasses signal factor, control factor, noise factor and response variable.

Alan