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Orientador(es)
Resumo(s)
In this paper, we present a non-destructive testing (NDT) technique based on in situ detection of defects up to 100 °C by ultrasonic testing (UT) during construction of parts by a metal additive manufacturing technology known as wire arc additive manufacturing (WAAM). The proposed technique makes use of interlayer application of commercial solder flux to serve as coupling medium for in situ inspection using a special-purpose UT probe. The experimental work was carried out in deposited ER5356 aluminum straight walls following a threefold structure. First, characterization tests with geometrically similar walls with and without interlayer application of solder flux highlight its neutrality, with no effect on the chemical, metallurgical and mechanical properties of the walls. Secondly, UT tests on walls at temperatures ranging from room temperature to 100 °C demonstrate the satisfactory performance of the solder flux as a coupling medium, with little to no soundwave amplitude losses or noise. Finally, acoustic attenuation, impedance and transmission estimations highlight the effectiveness of the proposed technique, establishing a basis for the future development of automated NDT systems for in situ UT of additive manufacturing processes.
Descrição
Palavras-chave
Wire arc additive manufacturing Non-destructive testing Ultrasonic testing High-temperature inspection
Contexto Educativo
Citação
Lopez, A.B.; Sousa, J.P.; Pragana, J.P.M.; Bragança, I.M.F.; Santos, T.G.; Silva, C.M.A. In Situ Ultrasonic Testing for Wire Arc Additive Manufacturing Applications. Machines 2022, 10, 1069. https://doi.org/10.3390/machines10111069
Editora
MDPI