The Mechanics of Vibrothermography

Reifsnider, KL; Henneke, E. G.; Stinchcomb, WW

doi:10.1007/978-1-4684-3857-4_12

Cited by 78 publications

(52 citation statements)

References 3 publications

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“…A polycarbonate specimen, loaded quasi -statically at a slow rate developed deformation bands which slowly progressed through the specimen. The temperature in these deformation bands exceeded 16 0 C above that in undeformed regions of the bar [3].…”

Section: Listed Under Publications and Technicalmentioning

confidence: 87%

Vibrothermography: investigation, development and application of a new nondestructive evaluation technique

1993

NDT & E International

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Section: Listed Under Publications and Technicalmentioning

confidence: 87%

Vibrothermography: investigation, development and application of a new nondestructive evaluation technique

1993

NDT & E International

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“…Vibrothermography is another active TNDT technique [22][23][24]. In this case, the energy is delivered to the tested object in the form of elastic waves generated by piezoceramic transducer assembly.…”

Section: Vibrothermographymentioning

confidence: 99%

Nondestructive Testing of Ceramic Hip Joint Implants with Laser Spot Thermography

Roemer

Pieczonka

Juszczyk

et al. 2017

Archives of Metallurgy and Materials

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T he paper presents an application of laser spot thermography for damage detection in ceramic samples with surface breaking cracks. The measurement technique is an active thermographic approach based on an external heat delivery to a test sample, by means of a laser pulse, and signal acquisition by an infrared camera. Damage detection is based on the analysis of surface temperature distribution near the exciting laser spot. The technique is nondestructive, non-contact and allows for full-field measurements. Surface breaking cracks are a very common type of damage in ceramic materials that are introduced in the manufacturing process or during the service period. This paper briefly discusses theoretical background of laser spot thermography, describes the experimental test rig and signal processing methods involved. Damage detection results obtained with laser spot thermography are compared with reference measurements obtained with vibrothermography. This is a different modality of active thermography, that has been previously proven effective for this type of damage. We demonstrate that both measurement techniques can be effectively used for damage detection and quality control applications of ceramic materials.

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“…Typical synthetic defects used for NDE applications, such as electrical discharge machining (EDM) notches and flat-bottom holes are not suitable for vibrothermography since they do not generate a measurable amount of heat when vibrated. Folded, sealed teflon tape pillows [2,3] have been used as synthetic defects in vibrothermography, but are only appropriate for composite laminates, limiting their widespread use. Viscous material-filled (VMF) defects, however, are applicable for vibrothermography in a wide range of materials since they rely on viscoelasticity to generate heat.…”

Section: Theorymentioning

confidence: 99%

Synthetic Defects for Vibrothermography

Renshaw¹,

Holland²,

Thompson³

et al. 2010

AIP Conference Proceedings

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Synthetic defects are an important tool used for characterizing the performance of nondestructive evaluation techniques. Viscous material-filled synthetic defects were developed for use in vibrothermography (also known as sonic IR) as a tool to improve inspection accuracy and reliability. This paper describes how the heat-generation response of these VMF synthetic defects is similar to the response of real defects. It also shows how VMF defects can be applied to improve inspection accuracy for complex industrial parts and presents a study of their application in an aircraft engine stator vane. ABSTRACT. Synthetic defects are an important tool used for characterizing the performance of nondestructive evaluation techniques. Viscous material-filled synthetic defects were developed for use in vibrothermography (also known as sonic IR) as a tool to improve inspection accuracy and reliability. This paper describes how the heat-generation response of these VMF synthetic defects is similar to the response of real defects. It also shows how VMF defects can be applied to improve inspection accuracy for complex industrial parts and presents a study of their application in an aircraft engine stator vane.

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The Mechanics of Vibrothermography

Cited by 78 publications

References 3 publications

Vibrothermography: investigation, development and application of a new nondestructive evaluation technique

Vibrothermography: investigation, development and application of a new nondestructive evaluation technique

Nondestructive Testing of Ceramic Hip Joint Implants with Laser Spot Thermography

Synthetic Defects for Vibrothermography

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