Nonlinear ultrasonics used to non-destructive testing and evaluation of 3D printed metallic parts.

0498625 - ÚT 2019 eng A - Abstract
Převorovský, Zdeněk - Krofta, Josef - Kober, Jan - Joch, Jaroslav - Kirschner, A.
Nonlinear ultrasonics used to non-destructive testing and evaluation of 3D printed metallic parts.
New Methods of Damage and Failure Analysis of Structural Parts.
[New Methods of Damage and Failure Analysis of Structural Parts. 10.09.2018-14.09.2018, Ostrava]
R&D Projects: GA ČR(CZ) GA17-22615S
Institutional support: RVO:61388998
Keywords : additive manufacturing * 3D printing * nondestructive evaluation * nonlinear elastic wave spectroscopy
OECD category: Applied mechanics

Nonlinear elastic wave spectroscopy (NEWS) methods were used to classify the presence of two types of pre-determined defects in Ti-6Al-4V prismatic samples fabricated by Electron Beam Melting (EBM) system. Relatively simple experimental facilities were used to interrogate samples with ultrasonic frequencies and record their response. The best classification of samples porosity were obtained by nonlinear wave modulation method with chirp excitation and by ratio of 3rd to 2nd harmonics growth with excitation amplitude.
Permanent Link: http://hdl.handle.net/11104/0291256