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首页> 外文期刊>Journal of Composite Materials >Comparison between different non-destructive techniques methods to detect and characterize impact damage on composite laminates
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Comparison between different non-destructive techniques methods to detect and characterize impact damage on composite laminates

机译：不同无损技术与复合层压板上影响损伤的不同无损技术的比较

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This paper aims to investigate the ability of ultrasonic and electronic speckle pattern interferometry to analyse the low-velocity impact internal damage mechanisms on basalt composite laminates and to provide information on the shape and the extent of the delamination in non-destructive way. Basalt/epoxy composites with different thicknesses have been realised and characterised by mechanical tests to investigate both fibre-dominated (tensile and flexural behaviour) and matrix-dominated properties (interlaminar shear strength). Specimens were impacted at penetration and at increasing energy values, to explore the damage onset and propagation. The results showed that the damage was concentrated under the impactor-material contact point and that the composite with intermediate thickness had the best balance between the different kinds of impact damages: delamination and indentation. Further, a good agreement was found between the overall data obtained by the two non-destructive techniques, confirming the capability of both techniques to examine the composite impact damage.
机译：本文旨在探讨超声波和电子散斑图案干涉测量的能力，分析玄武岩复合层压板上的低速冲击内部损伤机制，并提供有关非破坏性方式分层的形状和程度的信息。通过机械测试实现了具有不同厚度的玄武岩/环氧复合材料，以研究纤维主导的（拉伸和弯曲行为）和基质主导的性质（层间剪切强度）。试样受到渗透性和增加能量值的影响，探讨损伤发作和繁殖。结果表明，损坏浓缩在撞击器 - 材料接触点下，中间厚度的复合材料在不同类型的冲击损伤之间具有最佳平衡：分层和压痕。此外，通过两种非破坏性技术获得的整体数据之间发现了良好的一致性，确认两种技术的能力来检查复合撞击损伤。

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