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Structural integrity assessment via coating tolerant thermography

Lesniak, Jon R. / Bazile, Daniel J. / Zickel, Michael J.

This paper describes a new thermal method, coating tolerant forced diffusion thermography, specifically designed to inspect large steel bridge structures. Coating tolerant thermography separates the effects of structural defects and variations in emissivity. The technique is a derivative of force diffusion thermography which uses patterned radiation to force heat flow in-plane to specifically target cracks. This paper presents the fundamentals of coating tolerant forced diffusion thermography including the mathematical bases for the separation of thermal gradients and emissivity gradients. Also presented are case studies including the inspection of a bridge girder.

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Structural integrity assessment via coating tolerant thermography

Lesniak, Jon R. / Bazile, Daniel J. / Zickel, Michael J.

This paper describes a new thermal method, coating tolerant forced diffusion thermography, specifically designed to inspect large steel bridge structures. Coating tolerant thermography separates the effects of structural defects and variations in emissivity. The technique is a derivative of force diffusion thermography which uses patterned radiation to force heat flow in-plane to specifically target cracks. This paper presents the fundamentals of coating tolerant forced diffusion thermography including the mathematical bases for the separation of thermal gradients and emissivity gradients. Also presented are case studies including the inspection of a bridge girder.

Structural integrity assessment via coating tolerant thermography

Lesniak, Jon R. / Bazile, Daniel J. / Zickel, Michael J.

This paper describes a new thermal method, coating tolerant forced diffusion thermography, specifically designed to inspect large steel bridge structures. Coating tolerant thermography separates the effects of structural defects and variations in emissivity. The technique is a derivative of force diffusion thermography which uses patterned radiation to force heat flow in-plane to specifically target cracks. This paper presents the fundamentals of coating tolerant forced diffusion thermography including the mathematical bases for the separation of thermal gradients and emissivity gradients. Also presented are case studies including the inspection of a bridge girder.

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Titel:

Structural integrity assessment via coating tolerant thermography

Beteiligte:

Lesniak, Jon R. (Autor:in) / Bazile, Daniel J. (Autor:in) / Zickel, Michael J. (Autor:in)

Kongress:

Nondestructive Evaluation of Bridges and Highways ; 1996 ; Scottsdale,AZ,United States

Erschienen in:

Proc. SPIE ; 2946

Erscheinungsdatum:

13.11.1996

ISBN:

ISSN:

DOI:

https://doi.org/10.1117/12.259149

Medientyp:

Aufsatz (Konferenz)

Format:

Elektronische Ressource

Sprache:

Englisch

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