PPAP Evidence - Material Results or Dimensional results

[Bigfoot]

I am trying to find out where the "Material Results or Dimensional results" if they are less than 1 year old is referenced in the PPAP manual, if it is at all. I have looked through the 3rd edition PPAP reference manual & can't find it. Can any of you tell me where I can find this?

 

[Mike C]

Material, Performance,& Durability Test Results.

Here's one place.
General Motors Specific Instructions PAP 3rd Edition p 35-Section II. 3.2.5 item 2.

 

[Howard Atkins]

Why do you want to know?
Do you want to submit an existing PPAP to a new supplier?

 

[Bigfoot]

Why do you want to know?
Do you want to submit an existing PPAP to a new supplier?

This came up as a question during an Internal audit. The statement was made that when a PPAP is requested by the Customer for a running change you could use the existing documentation, like the material results, providing they were not more than one year old.

 

[Howard Atkins]

If there has been a change then IMO you must submit new dimensional results as the change could affect these.
If the material results that you submitted were in the form of a suppliers certificate, then it is reasonable that you will have an upto date certificate.
If you are testing materials then you have the results if not then the old results are sufficent for you and as I would imagine that this is described in the Control Plan good enough for the customer.
Does this help?

 

[Sam]

Also refer to CSR's;
Ford para 4.42 Layout and functional testing,
DCX para 4.2.1.8 Continuing conformance.

 

[Bill Ryan - 2007]

FWIW - My primary responsibility is submitting PPAPs for replacement tooling (die casting), engineering changes to the part (customer and/or internally driven), and processing changes. We have, in the past, followed the "less than a year" guideline which most of our customers requested. Some of our customers now "spark" a part every submission. We have changed our Standard Operating Procedure (SOP) to state that a material certification is required on each PPAP submission, unless otherwise directed by the customer. We have an in-house spectrometer so it is not that big a deal for us. We also pull samples from the holding furnace at the start and the end of a sample run, as well as, ongoing monitoring of our furnaces (we alloy most of our aluminum).

As to Dimensional Results - If it is an engineering change I normally only submit dimensionals affected by the change. All remaining dimensions are "as previously submitted and approved". I talk to the various Supplier Quality Engineers (SQEs) on a very regular basis and have formed some pretty fair relationships with them.Getting documentation from them (that this is acceptable) is not usually an issue. Obviously, with new tooling (replacement/additional cavity sets) a full layout is required.

With all that said, I have not seen a "time limit" specified in TS. As has been alluded to above, it is normally a Customer Specific Requirement (CSR).

Help some??
Bill