Non-destructive testing to characterize interlayer bonds of idealized concrete additive manufacturing products

Michelle A. Helsel, John S. Popovics, Peter B. Stynoski, Eric Kreiger

Research output: Contribution to journalArticlepeer-review

Abstract

We examine non-destructive testing (NDT) techniques that characterize the interlayer bond quality of idealized 3-D printed concrete, simulating a layup bond, in-situ. An experimental study evaluates four NDT methods (x-ray radiography, ultrasonic pulse velocity (UPV), vibration resonance, and multi-element array ultrasonics) to idealized, layered concrete specimens that simulate layers of a 3-D printed structure. The interlayer bond strengths of the specimens were measured directly using split-prism load testing. X-ray radiography and multi-element array ultrasonic test data demonstrate best correlation with measured interlayer bond strengths. We used multi-element array ultrasonic test data to classify bond interface quality into well bonded, weakly bonded, and debonded cases.

Original languageEnglish (US)
Article number102443
JournalNDT and E International
Volume121
DOIs
StatePublished - Jul 2021

Keywords

  • 3-D printed concrete
  • Additive manufacturing
  • Interlayer bond
  • NDT

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering

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