quality assurance

Abrasive blasting is often used to clean work pieces. During the process an abrasive medium is propelled with compressed air toward a given surface. Common abrasives are sand, glass beads, steel or corundum. For safety reasons the blasting process is carried out in closed blast cabinets or rooms. Abrasives and cut off material are filling the air so that the visibility is limited. Quality assurance and safety monitoring of workers in blast rooms are therefore difficult which is essential e. g. in atomic power plant demolition. This article describes the development and test of a camera to improve this situation. Compressed air flows through the camera housing to keep particles away from the lens. The air flow was optimized by computational fluid dynamics. A prototype was made by 3D printing and tested in an blast cabinet.

Requirements for efficiency in manufacturing processes are steadily increasing in global competition. Through digitization and data analytics, not only efficiency but also flexibility and quality are to be increased. Cyber-physical systems, which use smart sensors and communication with manufacturing systems to independently identify, document and control process steps, can help solve this problem. These can be attached to many types of tools and thus also capture manual work processes. This article shows how a smart object with communication and positioning functionality accompanies a product to be manufactured through the manufacturing process and how e.g. manual screwing processes are recorded and analyzed by smart sensors.

The structure, the most important results and the perspectives for future work of the Collaborative Research Center 499 „Development Production and Quality Assurance of Molded Microcomponents made of Metallic and Ceramic Materials” are briefly described. Numerous literature with a more detailed description of the scientific work and its results are given.