Laser ultrasonic testing (LU) is a non-contact inspection technique which has been proposed as suitable for in-situ monitoring of additive manufacturing processes, as measurements can be taken at elevated temperatures. In work presented at TMS 2017, Everton et al. used a Robo-Met.3D to validate Laser Ultrasound and X-Ray CT analyses of an additively manufactured Ti-6Al-4 V sample. The Robo-Met.3D analysis revealed a defect with dimensions of approximately 200 × 150 × 100 μm at a depth of 530 μm from the top surface, which had been ‘missed’ by LU and XCT, possibly due to its proximity to a manufactured through hole.
Find the abstract here: The Use of Laser Ultrasound to Detect Defects in Laser Melted Parts
Citation: Everton, S., Dickens, P., Tuck, C., Dutton, B., & Wimpenny, D. (2017). The Use of Laser Ultrasound to Detect Defects in Laser Melted Parts. In TMS 2017 146th Annual Meeting & Exhibition Supplemental Proceedings (pp. 105-116). Springer International Publishing.