Low Velocity Impact Damage Evaluation of 2D C/SiC Composite Material
Low Velocity Impact Damage Evaluation of 2D C/SiC Composite Material
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DOI：
10.4028/www.scientific.net/amr.79-82.1835
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发表时间：
2009-08
期刊：
影响因子：
--
通讯作者：
L. Yao;Ziwei Feng;Qianyu Cheng
中科院分区：
文献类型：
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作者：
L. Yao;Ziwei Feng;Qianyu Cheng
采用三种无损检测方法对不同能量低速冲击后的二维C/SiC试样进行了检测。这些方法所表征的损害区域是非常不同的。超声和热像图像均能显示LVI损伤，而X射线对内部损伤不敏感。然而，小的分层没有发现热成像和准确的判断取决于经验和红外相机的分辨率。而高频传感器由于其固有的缺陷，其测量结果非常混乱。建议采用超声C扫描和热成像技术相结合的方法来评价C/SiC复合材料的LVI损伤。建议采用低频探头进行C型超声检查。
Three non-destructive test (NDT) methods were used to detect the two dimensional C/SiC specimens after low velocity impact (LVI) of various energies. The damage areas characterized by these methods were very different. Both ultrasonic and thermographic images reveal the LVI damages, while X ray is non-sensitive to the interior damage. However, small delaminations were not found by thermography and accurate judgment depends on the experience and the resolution of the infrared camera. And the result acquired from the higher frequency transducer was very confused because of the inherent defects. It is suggested that using both ultrasonic C-scan and thermography to evaluate the LVI damage of C/SiC. It is also suggested using the transducer of low frequency to perform the ultrasonic C-scan.