---
title: Using Laser Ultrasound to Detect Defects in Laser Melted Parts
description: Robo-Met.3D analysis revealed a defect missed by Laser Ultrasound and X-Ray CT analyses of an additively manufactured Ti-6Al-4 V sample.
---

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# Using Laser Ultrasound to Detect Defects in Laser Melted Parts

*November 03, 2017*

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](https://www.ues.com/hubfs/Robo-Met%20Publications/The%20Use%20of%20Laser%20Ultrasound%20to%20Detect%20Defects%20in%20Laser%20Melted%20Parts.pdf)

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.

 

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