Assessment of NDT interferometric techniques for impact damage detection in composite laminates
Source abstract
Abstract
Abstract In this paper, the feasibility of using optical methods to detect impact damage in thin laminates is investigated and discussed. Specimens impacted with different energy levels were analysed by a holographic procedure and by an electronic speckle pattern interferometry technique; the results obtained with the two techniques were compared with those acquired by a pulse-echo full-volume ultrasonic technique. The investigation showed that both optical methods were able to identify the presence of impact damage, with an efficiency dependent on the through-thickness location of the delaminations produced by impact. The adoption of the ESPI technique allowed significant reductions in inspection times, but quantitative estimates of impact damage were drastically impaired by the high level of speckle noise typical of the technique.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Optical measurement and interference techniques · Ultrasonics and Acoustic Wave Propagation · Thermography and Photoacoustic Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (22)
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