High resolution imaging of impacted CFRP composites with a fiber-optic laser-ultrasound scanner.
High resolution imaging of impacted CFRP composites with a fiber-optic laser-ultrasound scanner.
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DOI:
10.1016/j.pacs.2016.05.002
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发表时间:
2016-06
期刊:
影响因子:
7.9
通讯作者:
O'Donnell, Matthew
中科院分区:
文献类型:
--
作者:
Pelivanov, Ivan;Ambrozinski, Lukasz;Khomenko, Anton;Koricho, Ermias G.;Cloud, Gary L.;Haq, Mahmoodul;O'Donnell, Matthew
关键词:
Damage induced in polymer composites by various impacts must be evaluated to predict a component’s post-impact strength and residual lifetime, especially when impacts occur in structures related to human safety (in aircraft, for example). X-ray tomography is the conventional standard to study an internal structure with high resolution. However, it is of little use when the impacted area cannot be extracted from a structure. In addition, X-ray tomography is expensive and time-consuming. Recently, we have demonstrated that a kHz-rate laser-ultrasound (LU) scanner is very efficient both for locating large defects and evaluating the material structure. Here, we show that high-quality images of damage produced by the LU scanner in impacted carbon-fiber reinforced polymer (CFRP) composites are similar to those produced by X-ray tomograms; but they can be obtained with only single-sided access to the object under study. Potentially, the LU method can be applied to large components in-situ.
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