Please use this identifier to cite or link to this item: https://scidar.kg.ac.rs/handle/123456789/10513
Title: Defectoscopy of direct laser sintered metals by low transmission ultrasonic frequencies
Authors: Mitrovic, Nebojsa
Ebersold Z.
Đukić, Slobodan
Jordović Branka
Peulic, Aleksandar
Journal: Science of Sintering
Issue Date: 24-Sep-2012
Abstract: This paper focuses on the improvement of ultrasonic defectoscopy used for machine elements produced by direct laser metal sintering. The direct laser metal sintering process introduces the mixed metal powder and performs its subsequent laser consolidation in a single production step. Mechanical elements manufactured by laser sintering often contain many hollow cells due to weight reduction. The popular pulse echo defectoscopy method employing very high frequencies of several GHz is not successful on these samples. The aim of this paper is to present quadraphonic transmission ultrasound defectoscopy which uses low range frequencies of few tens of kHz. Therefore, the advantage of this method is that it enables defectoscopy for honeycombed materials manufactured by direct laser sintering. This paper presents the results of testing performed on AlSil2 sample.
URI: https://scidar.kg.ac.rs/handle/123456789/10513
Type: Article
DOI: 10.2298/SOS1202177E
ISSN: 0350820X
SCOPUS: 84866431763
Appears in Collections:Faculty of Technical Sciences, Čačak
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