Investigation of fundamental ultrasonic propagation characteristics in NDT of electron beam melting additive manufactured samples

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Abstract

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.
Original languageEnglish
Number of pages4
Publication statusAccepted/In press - 14 Feb 2018
Event12th European Conference on Non-Destructive Testing - http://www.ecndt2018.com/, Gothenburg, Sweden
Duration: 11 Jun 201815 Jun 2018
http://www.ecndt2018.com/

Conference

Conference12th European Conference on Non-Destructive Testing
Abbreviated title12th ECNDT 2018
CountrySweden
CityGothenburg
Period11/06/1815/06/18
Internet address

Keywords

  • ultrasonics
  • propagation and scattering

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