Application of micro-electro-mechanical sensors contactless NDT of concrete structures

Suyun Ham, John S. Popovics

Research output: Contribution to journalArticle


The utility of micro-electro-mechanical sensors (MEMS) for application in air-coupled (contactless or noncontact) sensing to concrete nondestructive testing (NDT) is studied in this paper. The fundamental operation and characteristics of MEMS are first described. Then application of MEMS sensors toward established concrete test methods, including vibration resonance, impact-echo, ultrasonic surface wave, and multi-channel analysis of surface waves (MASW), is demonstrated. In each test application, the performance of MEMS is compared with conventional contactless and contact sensing technology. Favorable performance of the MEMS sensors demonstrates the potential of the technology for applied contactless NDT efforts. Objective: To illustrate the utility of air-coupled MEMS sensors for concrete NDT, as compared with conventional sensor technology.

Original languageEnglish (US)
Pages (from-to)9078-9096
Number of pages19
JournalSensors (Switzerland)
Issue number4
StatePublished - Apr 17 2015


  • Air-coupled
  • Impact-echo
  • MEMS
  • Ultrasound

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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