2013
DOI: 10.1063/1.4789153
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Impact damage detection in sandwich composite structures using Lamb waves and laser vibrometry

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Cited by 5 publications
(3 citation statements)
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“…Piezoelectric discs offer an interesting solution as low-power actuators for vibrothermography [5]. This type of actuator is particularly attractive from a Structural Health Monitoring (SHM) perspective since it can be permanently bonded to the structure and possibly used for different combination of in situ applicable inspection methods: guided waves purely based detection techniques [6], guided waves/ defect interaction imaging with shearography or laser vibrometry [7][8][9][10], and as in the present case, vibrothermography. The ultrasonic wavelength generated by this type of actuator is related to the diameter of the piezoelectric (the most favorable wavelength for wave generation is worth approximately twice the diameter [5]).…”
Section: Introductionmentioning
confidence: 98%
“…Piezoelectric discs offer an interesting solution as low-power actuators for vibrothermography [5]. This type of actuator is particularly attractive from a Structural Health Monitoring (SHM) perspective since it can be permanently bonded to the structure and possibly used for different combination of in situ applicable inspection methods: guided waves purely based detection techniques [6], guided waves/ defect interaction imaging with shearography or laser vibrometry [7][8][9][10], and as in the present case, vibrothermography. The ultrasonic wavelength generated by this type of actuator is related to the diameter of the piezoelectric (the most favorable wavelength for wave generation is worth approximately twice the diameter [5]).…”
Section: Introductionmentioning
confidence: 98%
“…It was shown that the low-speed impact defects depend on the impact energy and velocity (lowspeed impact was defined as less than 50J in impact energy and 4-8 m/s impact velocity for the studied sandwich structure). Several attempts have been made previously to represent the barely visible low-speed impact damage (BVLID) phenomena and to develop detection techniques to assess different damage types [10][11][12][13]. A comparison between different identification methods including visual, shearography and C-scan to inspect the post-impact damages/defects of a sandwich composite structure was presented in [12].…”
Section: Introductionmentioning
confidence: 99%
“…An experimental study on impact damage identification in sandwich composite structures using Lamb wave excitation and Laser-Doppler-Vibrometer (LDV) was presented in [10].…”
Section: Introductionmentioning
confidence: 99%