Název: NDT in additive manufacturing of metals
Autoři: Převorovský, Zdeněk ; Krofta, Josef ; Kober, Jan
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Workshop of NDT Experts /9./, Praha (CZ), 20171009
Rok: 2017
Jazyk: eng
Abstrakt: In this study we tested possibilities of nonlinear elastic wave spectroscopy (NEWS) methods to classify two types of artificially created defects in Ti-6Al-4V prismatic samples fabricated by Electron Beam Melting (EBM) system. Two series of samples with variable internal defects were tested: samples with central circular defects (missing material gaps), and samples with gradually growing stochastic porosity. Each group of samples contained also fully compact sample for a comparison. Five ultrasonic NEWS procedures were used to classify defects variability. Relatively simple experimental facility with two piezoelectric transducers allows interrogate samples and record their response. The best results, documented in this paper, were obtained by two modifications of NWMS procedure. Results of NEWS tests indicate that selected NEWS procedures can be used also for online AM monitoring.
Klíčová slova: 3D printing of metals; additive manufacturing; nondestructive testing; nonlinear elastic wave spectroscopy
Číslo projektu: GA17-22615S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: NDT in PROGRESS, ISBN 978-80-87012-63-5

Instituce: Ústav termomechaniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0279214

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-371066


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav termomechaniky
Konferenční materiály > Příspěvky z konference