Applying computer-aided approaches in quality control

This project presents the computer-aided quality (CAQ) methods which is used to compare manufactured components with original data from fundamental computer-aided design (CAD) models. Usually, manufactured products need to be verified from the quality viewpoints. First, the terminology in quality control is represented. Furthermore, available types of computer-aided technologies such as computer-aided inspection (CAI) and computer-aided testing (CAT) in addition to the discussion of crucial changes that occur in industry by applying them in quality operations and applications. Second, an overview of the current modern measurement and inspection approaches such as contact and non-contact (including optical and non-optical) and related technologies is provided then their methods and their principles are discussed. However, in this study the focus would be on non-contact measurements and inspections approaches, specifically on the optical non-contact 3D measurement approaches which are more appropriate and operational to today’s industrial needs. Third, principles of data collection and evaluation of the offered approaches (both for optical non-contact) is provided, in which, a stripe projection system with combined gray-code and phase shifting is introduced. With these tools, it is possible to measure and inspect the 3D forms and geometrical characteristics of objects or manufactured goods.