Non-conformance of a product with specified requirements or non-fulfillment of customer expectations.

The number of defects per million opportunities.

Any unit with one or more defect; a defective product is unfit for its intended use.

Application of Six Sigma and Lean tools utilized for designing new products or new processes using the CDOV roadmap (Concept, Design, Optimize, Verify); also known as Lean Design for Six Sigma(LDFSS).

A method for testing and optimizing a process. DOE uses a planned experiment to control input variables and measure their effect on output variables; it uses an experiment rather than real world data.

DMADV stands for Define, Measure, Analyze, Design, and Verify. DMADV is a data driven quality strategy for designing products and processes, and is an integral part of a Six Sigma Quality Initiative.

The structured road map for breakthrough process improvement for existing products and existing processes (Define, Measure, Analyze, Improve and Control).

Design Validation
Testing to ensure that a product conforms to defined user needs and/or requirements.

Design Verification
Conformation by examination and provision of evidence that specify requirements have been met. Testing to ensure that all design outputs meet design requirements.

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