摘要
介绍了用某超声C扫描检测设备检测碳纤维环氧层压板、碳环氧板纸蜂窝粘接结构、铝板铝蜂窝粘接结构三种材料粘接缺陷的试验结果。试验用的试块带有4,10,16mm三种尺寸的人工缺陷,用于模拟各种脱粘缺陷。采用喷水探头透射法,用5MHz超声检测层压板,用1MHz超声检测蜂窝结构,都得到了人工缺陷的清晰准确的C扫描图。对于厚度为135mm的纸蜂窝结构,因超声衰减太大,尚不能检测。
This paper illustrates the results of experiments in which carbon fiber reinforced epoxy laminates,honeycomb structures composed of carbon epoxy covers and paper cores,and honeycomb structures composed of aluminum alloy covers and aluminum alloy cores are tested by an ultrasonic C-scan system for finding bonding defects.The reference blocks used in the experiments have round disk shape artificial defects which simulate bonding defects.The diameters of the defects are 4 mm,10 mm,and 16 mm,respectively.Through transmission method and water jets coupling are used.The laminates are tested with 5 MHz ultrasound and the honeycomb structures are tested with 1 MHz ultrasound.As a result,clear and accurate C-scan pictures of the defects are obtained except those in the honeycomb structure with 135 mm thick paper core.The failure is caused by the high attenuation of the honeycomb structure.
出处
《无损检测》
2012年第5期62-64,共3页
Nondestructive Testing
关键词
层压板
蜂窝结构
粘接缺陷
超声C扫描
Laminate composite
Honeycomb structure
Bonding defect
Ultrasonic C-scan
