Review of Progress in Quantitative Nondestructive Evaluation 1995
DOI: 10.1007/978-1-4615-1987-4_64
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A Two-Layer Model for the Laser Generation of Ultrasound in Graphite-Epoxy Laminates

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Cited by 4 publications
(5 citation statements)
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“…This diagram is fully different from those obtained with isotropic materials in thermoelastic mode [2], and also from those obtained on composite with a different laser source [4]. It is likely that the source nature influences greatly the directivity of the generated waves [5]. The resin being half-transparent, it seems that the epoxy layer plays the role of a coercive blade, permitting the generation of a longitudinal wave with an important amplitude at the epicenter.…”
Section: Directivity Diagramcontrasting
confidence: 61%
See 1 more Smart Citation
“…This diagram is fully different from those obtained with isotropic materials in thermoelastic mode [2], and also from those obtained on composite with a different laser source [4]. It is likely that the source nature influences greatly the directivity of the generated waves [5]. The resin being half-transparent, it seems that the epoxy layer plays the role of a coercive blade, permitting the generation of a longitudinal wave with an important amplitude at the epicenter.…”
Section: Directivity Diagramcontrasting
confidence: 61%
“…Moreover, the relay extremity was covered with a thin layer of paint to enable the laser generation of ultrasounds. In these conditions, the generation occurs in the paint layer and the situation is the same as in composite materials [5].…”
Section: Bandwidth Of the Generated Ultrasoundsmentioning
confidence: 99%
“…As a result, very little ultrasound was generated where the carbon fibers were exposed on the surface. Note that the enhancement of ultrasound generation in the epoxy layer was simulated in [15].…”
Section: Lut Performancementioning
confidence: 99%
“…Rose reported the laser ultrasonic pulse generated due to a surface modification by transparent overlay model [10], in which he supposed the elastic properties of the transparent overlay are the same as that of the substrate. Dubios et al [7] calculated the normal displacement waveform at the epicenter by using two-layer mode and completely numerical Hankel and Laplace transformations.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, people pay their attentions on the laser ultrasonic wave excited by a thermal source distributed along the depth direction in uniform solid [3], and excited by a laser thermal source in a medium composed by two layer or multiplayer materials with different elastic properties [4][5][6][7][8][9]. Rose reported the laser ultrasonic pulse generated due to a surface modification by transparent overlay model [10], in which he supposed the elastic properties of the transparent overlay are the same as that of the substrate.…”
Section: Introductionmentioning
confidence: 99%