LINEAR AND NONLINEAR ANALYSIS OF ADDITIVELY MANUFACTURED MATERIAL WITH DIFFERENT POROSITY INDUCED BY VARYING MATERIAL PRINTING SPEED USING GUIDED ACOUSTIC WAVES

Se Hyuk Park, Hamad Alnuaimi, Anna Hayes, Madison Sitkiewicz, Umar Amjad, Krishna Muralidharan, Tribikram Kundu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Guided acoustic wave based techniques have been found to be very effective for damage detection, and both quantitative and qualitative characterization of materials. In this research, guided acoustic wave techniques are used for porosity evaluation of additively manufactured materials. A metal 3D printer, Concept Laser Mlab 200 R Cusing™, is used to manufacture 316L additively manufactured (AM) stainless steel specimens. Two levels of porosity are investigated in this study, which was controlled by a suitable combination of scan speed and laser power. The sample with lower level of porosity is obtained with a low scanning speed. Lead Zirconate Titanate (PZT) transducers are used to generate guided acoustic waves. The signal is excited and propagated through the specimens in a single sided transmission mode setup. Signal processing of the recorded signals for damage analysis involves both linear and nonlinear analyses. Linear ultrasonic parameters such as the time-of-flight and magnitude of the propagating waves are recorded. The nonlinear ultrasonic parameter, the Sideband Peak Count Index (SPC-I) is obtained by a newly developed nonlinear analysis technique. Results obtained for both specimens are analyzed and compared using both linear and nonlinear ultrasonic techniques. Finally, the effectiveness of SPC-I technique in monitoring porosity levels in AM specimens is discussed.

Original languageEnglish (US)
Title of host publicationProceedings of 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885529
StatePublished - 2021
Externally publishedYes
Event2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021 - Virtual, Online
Duration: Jul 28 2021Jul 30 2021

Publication series

NameProceedings of 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021

Conference

Conference2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021
CityVirtual, Online
Period7/28/217/30/21

Keywords

  • Additively manufactured components
  • Damage detection
  • Guided acoustic wave
  • Porosity evaluation
  • SPC-I
  • Ultrasonic technique

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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