Investigation of fundamental ultrasonic propagation characteristics in NDT of Electron Beam Melted additive manufactured samples

Speaker:
Tofeldt, Oskar; University West; Sweden

Authors:
Tofeldt, O.; University West; Sweden
Pierce, S.; University of Strathclyde; United Kingdom
Smillie, G.; University of Strathclyde; United Kingdom
Kerr, W.; Advanced Forming Research Centre; United Kingdom
Flockhart, G.M.H.; University of Strathclyde; United Kingdom
Macleod, C.N.; University of Strathclyde; United Kingdom
Blue, R.; University of Strathclyde; United Kingdom
Gachagan, A.; University of Strathclyde; United Kingdom
Stratoudaki, T.; University of Strathclyde; United Kingdom
Olsson, J.; University West; Sweden
McMahon, D.; Advanced Forming Research Centre; United Kingdom

ID: ECNDT-0117-2018
Download: PDF
Session: Additive Manufacturing – characterisation
Room: H1
Date: 2018-06-11
Time: 16:00 - 16:20

New approaches for efficient NDT inspection of modern additively manufactured metallic components are required urgently to qualify and validate the next generation of metallic parts across a range of industries. Ultrasonic testing is a fundamental component of NDT for such additive manufacturing processes. This work studies the ultrasonic propagation characteristics of EBM manufactured sample coupons in Alloy 718 material. Fundamental longitudinal and shear wave velocity measurements are experimentally measured in 3 orthogonal build directions of the sample coupons. Results show a dependency of the ultrasonic velocities and the build direction. The measured velocities are further verified in a phased array measurement showing successful results that highlights the potential of continued studies with synthetic apertures techniques.