On Evaluation Methods in Product Development. Application on Mechanical Transmissions

摘要

Successful companies design and produce products which satisfy optimally the needs and desires of the customer. For this goal new concept ideas need to be generated, optimised and the optimal of them to be selected for production. A literature review considering the state of the art of the systematic approach of product development and of the evaluation methods is realized. Two evaluation methods are considered. One is the classical evaluation method (Pahl et al. 2007) and the second is the fuzzy logic evaluation method proposed by authors. A comparison of the two methods is realized and the principal advantages and disadvantages using a case of study of four variants for a mechanical transmission between a turbine and an electrical generator.