Selection of shear horizontal wave transducers for robotic nondestructive inspection in harsh environments

Sungho Choi, Hwanjeong Cho, Clifford Jesse Lissenden, III

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Harsh environments and confined spaces require that nondestructive inspections be conducted with robotic systems. Ultrasonic guided waves are well suited for robotic systems because they can provide efficient volumetric coverage when inspecting for various types of damage, including cracks and corrosion. Shear horizontal guided waves are especially well suited for robotic inspection because they are sensitive to cracks oriented perpendicular or parallel to the wave propagation direction and can be generated with electromagnetic acoustic transducers (EMATs) and magnetostrictive transducers (MSTs). Both types of transducers are investigated for crack detection in a stainless steel plate. The MSTs require the robot to apply a compressive normal force that creates frictional force coupling. However, the coupling is observed to be very dependent upon surface roughness and surface debris. The EMATs are coupled through the Lorentz force and are thus noncontact, although they depend on the lift off between transducer and substrate. After comparing advantages and disadvantages of each transducer for robotic inspection the EMATs are selected for application to canisters that store used nuclear fuel.

Original languageEnglish (US)
Article number5
JournalSensors (Switzerland)
Volume17
Issue number1
DOIs
StatePublished - Jan 1 2017

Fingerprint

Robotics
robotics
Transducers
inspection
Acoustic transducers
transducers
Inspection
shear
Guided electromagnetic wave propagation
Electromagnetic Phenomena
Acoustics
cracks
Cracks
Crack detection
electromagnetism
Lorentz force
Stainless Steel
Ultrasonic waves
acoustics
Nuclear fuels

All Science Journal Classification (ASJC) codes

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

Cite this

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Selection of shear horizontal wave transducers for robotic nondestructive inspection in harsh environments. / Choi, Sungho; Cho, Hwanjeong; Lissenden, III, Clifford Jesse.

In: Sensors (Switzerland), Vol. 17, No. 1, 5, 01.01.2017.

Research output: Contribution to journalArticle

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