Lamb wave–based detection of a controlled disbond in a lap joint:
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TLDR
In this article, Lamb waves have been used to monitor lap joints against defects such as disbonds in aircraft and bridges, but there is no evidence that they can reliably detect disbond defects.Abstract:
Lap joints are widely used across many critical structures such as aircraft and bridges. Lamb waves have long been proposed to monitor lap joints against defects such as disbonds. However, there ar...read more
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Damage detection method based on Lamb waves for stiffened composite panels
TL;DR: In this article, a new damage detection method for stiffened composite panels based on Lamb waves is presented, which combines a quantitative wavefront expression for an anisotropic composite and the conventional time-of-flight (ToF) method to detect debonding damage between stiffeners and the composite skin as well as lowvelocity impact damage in the skin sheet.
Journal ArticleDOI
Wave Frequency Effects on Damage Imaging in Adhesive Joints Using Lamb Waves and RMS
Erwin Wojtczak,Magdalena Rucka +1 more
TL;DR: The main conclusion was that the effectiveness of measurements strongly depends on the chosen wave frequency value, and the influence of an excitation frequency value on the obtained visualizations was considered experimentally and numerically in the wide range for a single defect.
Journal ArticleDOI
Detection and sizing of disbond in multilayer bonded structure using modally selective guided wave
TL;DR: Bonded structures are frequently adopted in structural connections and are highly prone to degradation or decrease of interfacial strength due to adhesive aging, poor quality of surface preparation, etc. as mentioned in this paper.
References
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Journal ArticleDOI
Review of guided-wave structural health monitoring
TL;DR: This paper begins with an overview of damage prognosis, and a description of the basic methodology of guided-wave SHM, then reviews developments from the open literature in various aspects of this truly multidisciplinary field.
Journal ArticleDOI
Tuned Lamb-Wave Excitation and Detection with Piezoelectric Wafer Active Sensors for Structural Health Monitoring
TL;DR: In this paper, the capability of embedded piezoelectric wafer active sensors (PWAS) to excite and detect tuned Lamb waves for structural health monitoring is explored.
Journal ArticleDOI
Structural health monitoring using scanning laser vibrometry: I. Lamb wave sensing
TL;DR: In this article, a non-contact method for low-frequency Lamb wave sensing using a laser Doppler velocimeter is presented, and the results are validated using classical piezoceramic-based sensing and numerical simulations.
Proceedings ArticleDOI
Lamb wave generation with piezoelectric wafer active sensors for structural health monitoring
TL;DR: In this article, the capability of embedded piezoelectric wafer active sensors (PWAS) to perform in-situ nondestructive evaluation (NDE) is explored.
Journal ArticleDOI
Fatigue crack detection in metallic structures with Lamb waves and 3D laser vibrometry
W J Staszewski,B C Lee,R Traynor +2 more
TL;DR: In this paper, a simple fatigue test performed to introduce a crack into an aluminium plate is presented, where Lamb waves generated by a low profile, surface-bonded piezoceramic transducer are sensed using a triaxis, multi-position scanning laser vibrometer.
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