In-Process Automated Areal Surface Measurement

This chapter explores the adoption of automated areal metrology techniques for precision measurement of the surface topography of components in the aerospace industry. Traditional visual and tactile inspection methods are being replaced by quantitative areal techniques due to their efficiency and accuracy. The cost justification for implementing automation is discussed, highlighting the significant time and cost savings. Hardware and software requirements for automation are outlined, focusing on part size, access, texture and reflectivity. The polarised structured light method is introduced as a suitable measurement technology, providing vibration immunity and high-resolution measurements. The automation setup, including a robotic arm and the 4D InSpec metrology head, is presented as an effective solution for high-speed and reliable measurements. The chapter also discusses automation for defect identification and the potential for measurement stitching, CAD comparison and data meshing. These applications enhance efficiency and accuracy in the inspection process. Overall, the adoption of automated areal metrology offers significant benefits in terms of efficiency, accuracy and cost-effectiveness in precision measurement for aerospace components.