A non-contact method for evaluating material properties and structural defects using laser generated ultrasound

B. Sorazu, Syed Atique, G.J. Thursby, Brian Culshaw

Research output: Contribution to conferencePaper

Abstract

This paper describes an innovative non contact technique whereby the mechanical properties of a material sample may be determined. The basic principle is to measure acoustic dispersion curves (Lamb waves) excited using laser generated ultrasound and detected optically. The technique is capable of yielding modulli and Poisson’s ratio with repeatabilities of better than a few percent. It may also be used to detect changes in material characteristics and structural damage. We anticipate application in materials characterisation and damage detection
Original languageEnglish
Number of pages6
Publication statusPublished - 2006

Fingerprint

damage
Lamb waves
defects
Poisson ratio
lasers
mechanical properties
acoustics
curves

Keywords

  • mechanical properties
  • non-contact method
  • evaluating
  • material properties
  • structural defects
  • laser generated ultrasound

Cite this

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title = "A non-contact method for evaluating material properties and structural defects using laser generated ultrasound",
abstract = "This paper describes an innovative non contact technique whereby the mechanical properties of a material sample may be determined. The basic principle is to measure acoustic dispersion curves (Lamb waves) excited using laser generated ultrasound and detected optically. The technique is capable of yielding modulli and Poisson’s ratio with repeatabilities of better than a few percent. It may also be used to detect changes in material characteristics and structural damage. We anticipate application in materials characterisation and damage detection",
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A non-contact method for evaluating material properties and structural defects using laser generated ultrasound. / Sorazu, B.; Atique, Syed; Thursby, G.J.; Culshaw, Brian.

2006.

Research output: Contribution to conferencePaper

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T1 - A non-contact method for evaluating material properties and structural defects using laser generated ultrasound

AU - Sorazu, B.

AU - Atique, Syed

AU - Thursby, G.J.

AU - Culshaw, Brian

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AB - This paper describes an innovative non contact technique whereby the mechanical properties of a material sample may be determined. The basic principle is to measure acoustic dispersion curves (Lamb waves) excited using laser generated ultrasound and detected optically. The technique is capable of yielding modulli and Poisson’s ratio with repeatabilities of better than a few percent. It may also be used to detect changes in material characteristics and structural damage. We anticipate application in materials characterisation and damage detection

KW - mechanical properties

KW - non-contact method

KW - evaluating

KW - material properties

KW - structural defects

KW - laser generated ultrasound

M3 - Paper

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