摘要
为评估超声红外热成像对复合材料低速冲击损伤的检测能力,提出了评估流程和评估标准。设计并制作了复合材料层合板,分别采用超声红外热成像和超声C扫描两种方法对不同冲击能量下的冲击损伤进行了检测研究,以超声C扫描结果作为参照,对比分析了超声红外热成像的检测结果并对损伤大小进行了定量识别。结果表明:超声红外热成像不仅能够对冲击损伤进行准确的定位,还能有效地检测出冲击引起的纤维断裂、基体开裂和分层等具体的损伤形式,检测速度快,非常适合用于在线检测;与超声C扫描相比,超声热成像方法对冲击损伤大小的识别误差小于6%,检测精度较高,满足检测要求。
In order to evaluate the detection capability of ultrasonic infrared thermography for the low velocity impact damage in composites,the evaluation procedure and evaluation standard are proposed.Composite laminates were designed and manufactured,and the study on impact damage detections was carried out under different impact energy using both ultrasonic infrared thermography and ultrasonic C-scan methods.Taking the results of ultrasonic C-scan as reference,the detection results of ultrasonic infrared thermography is contrastively analyzed,and the size of damage is quantitatively recognized.The results show that the ultrasonic infrared thermography method can not only accurately locate the impact damage,but also effectively detect the specific damage forms,such as fiber breakage,matrix cracking and delamination.The ultrasonic infrared thermography method has fast detection speed and is suitable for on-line detection.Compared with ultrasonic C-scan method,the ultrasonic infrared thermography method has higher detection precision,the recognition error for impact damage size is less than 6%,which meets the detection requirement.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2016年第5期1124-1130,共7页
Chinese Journal of Scientific Instrument
基金
国家自然科学基金(51575516
51305447)
陕西省自然科学基金研究计划(2016JM6075)
航空科学基金(201509U8004)项目资助
关键词
超声红外热成像
复合材料
低速冲击损伤
超声C扫描
检测能力评估
ultrasonic infrared thermography
composite
low velocity impact damage
ultrasonic C-scan
detection capability evaluation
