Difference between DV testing and PV testing

DV testing & PV testing are part of validation testing.
Various Validation testing- Engineering development, Design verification,
Product validation, continuous compliance test (CCT). These are also test
stages-First ED then DV & PV in last CCT.

Here in this article you will learn about basic difference between DV test and PV test widely used in automobile industries. Since validation and verification has now became necessary for product development in almost all industries-including medical, service and IT industries. 

Before going in details we have to understand basic difference two terminology which is used in this article-Verification and Validation

Difference between Verification and Validation

Verification means the evaluation whether the product has
been designed and produced according to the specifications, drawings,
regulations, instructions. An exercise on paper that checks if the design is
developed according to, and complies with standards, governmental regulations,
industry-specific regulations, customer requirements. In addition it analyses
if the design outputs met the design input requirements.

Validation mean the evaluation whether the product is
working according to the specifications, drawings, regulations, instructions. A
physical test of the product that validates, if the design of the product
itself is capable of meeting design requirements.

Now lets understand DV test and PV test

DV testing stand for design verification testing. While PV
testing is Part validation testing.

Purpose of DV testing is to validate product design meet
established requirements. DV testing is physical testing of pre-production or
production part.

DV testing is done as per DV test plan (DVP).  For preparing DV test plan, we need input-
Customer drawing, specification mentioned in drawing or any warranty issue
mentioned. So DV testing report may include customer designated symbol and

This is intensive testing program verifying all product
specification, standards, and customer requirements. It consist following
testing area:-

  1. Functional testing
  2. Performance testing
  3. Environment testing
  4. Durability testing
  5. Mechanical testing
  6. Conformance testing
  7. Safety certification testing

PV testing is product validation testing. Purpose of PV
testing is to verify the product produced from production process and tools
meet the requirement. PV testing is physical testing of production part.

For PV testing input will be PPAP functional requirements.

DV test and PV test difference

are PPAP functional requirements for PV testing? 

Final drawing, Mass production level part, Tool up part,
required production rate achieved, all ECN should be implemented.

Who is responsible for DV test?

design engineer is responsible for DV test and its integrity. Head of product
engineer is responsible for DV test approval. Lab in charge is responsible for
physical test and test report preparation.

each validation testing we need to add acceptance criteria, target requirement and Sample level.

There are 4 sample level used in DV testing

  • A = Prototype (Handmade)- Parts may be modifications of
    existing products or built from scratch. 
  • B = Prototype (Tooled), Samples released for design
    verification, made from prototype tools, and are Design-intent.
  • C = Production Tool (Not Process) 
  • D = Production Tool and Process

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