An Ultrasonic Wheel Probe Alternative to Liquid Coupling

Drinkwater, Bruce W.; Cawley, P.

doi:10.1007/978-1-4615-1987-4_124

Cited by 10 publications

(7 citation statements)

References 9 publications

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“…Two approaches have found application: capacitive transducers [34,35] and composite transducers [36]. There has also been interest in dry coupling using lowloss rubber wheels [37].…”

Section: Existing Techniquesmentioning

confidence: 99%

Non-destructive testing—current capabilities and future directions

Cawley

2001

Proceedings of the Institution of Mechanical Engineers, Part L:

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The non-destructive testing (NDT) industry is reviewed, the major techniques being described and current development directions and challenges identi ed. Visual inspection is probably the most widely used NDT technique but it does not generally involve the purchase of dedicated NDT instrumentation so it does not appear in market estimates. The NDT market is dominated by the 'big ve' techniques: radiography, ultrasonics, eddy current, magnetic particle and penetrant testing. There is considerable research and development effort in other areas, particularly for niche markets. Nondestructive testing is a mature industry, the global market size for equipment being around $1 billion. However, the cost to users greatly exceeds this since much inspection is highly labour intensive, and extensive preparation for inspection is often required, particularly in-service. There is therefore a continuing drive to increase the speed of inspection, to reduce the preparation required and, if possible, to inspect without the need to shut down operation. With some notable exceptions, it is possible to nd most types of defect. However, it is frequently not cost effective to do the inspection, so driving down overall inspection costs is a major research and development aim. The other signi cant research and development areas are in improving inspection reliability and in nding solutions in cases where there is currently no available inspection technique.

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“…Two approaches have found application: capacitive transducers [34,35] and composite transducers [36]. There has also been interest in dry coupling using lowloss rubber wheels [37].…”

Section: Existing Techniquesmentioning

confidence: 99%

Non-destructive testing—current capabilities and future directions

Cawley

2001

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…By contrast, dry-coupling strategies use pressure applied to a deformable material at the probe-target interface to Their usage is established in conventional inspections when liquid couplant would contaminate or weaken target structures [14], water bath immersion is inappropriate, or subsequent cleanup operations are impractical [15], [16]. Advancements in material science see their extension to dry-coupling, solid core, wheel probes [17], smaller and lighter than fluid core designs. Within the context of aerial NDE, operation without an onboard gel reservoir will reduce payload and extend flight times, also eliminating center of mass variation when dispensing gel.…”

Section: Introductionmentioning

confidence: 99%

Dry Coupled Ultrasonic Non-Destructive Evaluation Using an Over-Actuated Unmanned Aerial Vehicle

Watson

Kamel²,

Zhang

et al. 2022

IEEE Trans. Automat. Sci. Eng.

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“…Conventional UT sensors utilise a liquid couplant for energy transfer from transducer to part and challenges related to maintaining optimal stand-off, sufficient couplant and orientation to the surface limit their deployment in automated applications. Wheel or roller ultrasonic probe designs [26] feature an outer acoustically matched conformable tire that supports wave propagation into the part with reduced or no couplant requirements. This, along with their ability to roll along a surface, ensuring optimum sensor-surface perpendicularity, makes them ideal for automated applications [27], [28].…”

Section: Introductionmentioning

confidence: 99%