proefonderdelen
Proefonderdelen (singular proefonderdeel) is a term used in Dutch manufacturing and engineering to denote parts or samples produced specifically for testing and evaluation during product development or quality assurance. These parts are not intended for sale as finished products but serve to assess function, fit, performance, reliability, and manufacturability. Proefonderdelen may be prototypes, engineering samples, or pre-production units, and can also refer to test coupons, fixtures, or subassemblies used in laboratory or field tests.
They are created to verify design choices, identify design flaws, and gather data for further refinement. Tests
The lifecycle of proefonderdelen typically parallels the development process: early prototypes explore concepts, followed by more
Etymology: the term combines proef (test) and onderdeel (component/part). In practice, the concept is widespread in