A new partitioning process for geometrical product specifications and verification

Geometrical product specifications - model for product life cycle

As technology increases and performance requirements continually tighten, the cost and required precision of assemblies increase as well. There exists a strong need for increased attention to tolerance design to enable high-precision assemblies to be manufactured at lower cost. For automotive and aircraft industries, the tolerancing process has become an important issue in product and process d...

A Discrete Geometry Framework for Geometrical Product Specifications

GeoSpelling as the basis of the Geometrical Product Specifications (GPS) standard [1] enables a comprehensive modeling framework and an unambiguous language to describe geometrical variations during the overall product life cycle. This is accomplished by providing a set of concepts and operations based on the fundamental concept of the “Skin Model”. However, the definition of GeoSpelling has no...

Capability Analysis for a Multi-Process Product with Bilateral Specifications

Process capability indices (PCI) can be viewed as effective and excellent means of measuring product quality and performance. Several capability indices including Cp, Cpk, and Cpm are well accepted and the implementation of these techniques is successful. The indices Cpu, Cpl, and Cpk have been used previously for evaluating a multi-process product with smallerthe-better, larger-the-better, and...

A dynamic risk analysis on new product development process

Abstract In the dynamic and competitive market, managers seek to find effective strategies for new products development. Since There has not been a thorough research in this field, this study is based on a review on the risks exist in the NPD process and an analysis of risks through FMEA approach to prioritize the existent risks and a modeling behavior of the NPD process and main risks using s...

Measurement strategy for geometrical verification