面向不同复合材料修理场景的多模超声集成可视化检测技术  

Multi-Mode Ultrasonic Integrated Visual Inspection Technique for Composite Repairs in Different Scenarios

作　　者：刘菲菲 王波 刘松平 郝章程 杨玉森 张连旺 LIU Feifei;WANG Bo;LIU Songping;HAO Zhangcheng;YANG Yusen;ZHANG Lianwang(AVIC Manufacturing Technology Institute,Beijing 101300,China;AVIC Xi’an Aircraft Industry Group Company Ltd.,Xi’an 710089,China;AVIC Composite Co.,Ltd.,Beijing 101300,China)

机构地区：[1]中国航空制造技术研究院,北京101300 [2]中航西安飞机工业集团股份有限公司,西安710089 [3]中航复合材料有限责任公司,北京101300

出　　处：《航空制造技术》2024年第20期14-22,共9页Aeronautical Manufacturing Technology

摘　　要：现阶段先进复合材料修理缺少适用不同修理场景的可视化集成检测方法和技术。本文提出了一种基于多模超声原理的可视化集成检测方法,分析了原位、离位、制造场景复合材料修理检测需求和特点,构建了面向多修理场景的多模超声可视化集成检测方法,制备了典型复合材料修理试件,通过试验揭示了复合材料结构修理区超声信号规律和可视化检出效果。试验结果表明,根据复合材料修理结构中的超声信号和成像变化特征,可以清晰地识别出基体、修理区、修理边缘的拓扑和缺陷检出情况;不同超声模式具有不同的可视化成像效果和缺陷检出能力:其中单脉冲超声模式(M_(3))和非对称频率超声模式(M_(2))可视化成像质量和缺陷检出能力最好,空气耦合超声模式(M_(1))明显不如M_(2)和M_(3);M_(3)的成像细节最多;M_(2)和M_(3)检出缺陷的准确性和分辨率最高、表面检测盲区最小,分层和脱粘检出灵敏度达Φ3 mm,近表面分辨率达到单个复合材料铺层厚度(约0.125 mm),M_(1)的分层和脱粘检出灵敏度接近Φ6 mm。本文为不同复合材料修理场景提供了适用的超声可视化集成检测方法和技术,已得到实际检测应用。With the increasingly urgent repair demand brought by the extensive application of composites in industrial field,the advanced non-destructive testing and evaluation(NDT&E)methods and techniques for composite repairs have been highly concerned in the industry.At present,integrated visual NDT&E methods and techniques suitable for different repair scenarios are lacking.A integrated visual NDT&E method based on the principle of multi-mode ultrasound(MU)is proposed.The NDT&E requirements and features for composite repairs situ,off-location and manufacturing scenarios were analysed.A MU visual NDT&E method for multi-repair scenarios was constructed.Typical composite repair specimens were prepared.The regularity of ultrasonic signals and images from the composite repaired areas and the visualized detection effect of the developed integrated MU method were revealed experimentally.The results show that the geometrical topologies of the matrix,repaired zone and repaired edges in the composite body can be clearly identified and quantitatively characterized based on the change characteristics of ultrasonic signals from the repaired composites.Different ultrasonic modes have different visualized imaging effects and defect detection capabilities,among which mono-pulse ultrasonic mode(M_(3))and asymmetric-frequency ultrasonic mode(M_(2))have the best visual imaging quality and defect detection capabilities,while air-coupled ultrasonic mode(M_(1))is obviously inferior to M_(2)and M_(3).M_(3)has the most imaging details compared with M_(1)and M_(2);M_(2)and M_(3)have the highest accuracy and resolution in detected defects,the smallest surface detection dead-zone,and their sensitivities for detected out delamination and disbonding reachΦ3 mm.The surface resolution of M_(2)and M_(3)is smaller to a single ply thickness in composites(about 0.125 mm).The sensitivity of M_(1)for detecting delamination and disbonding is close toΦ6 mm.Thus,the integrated MU method and technique provide a powerful and visualized quantitative NDT&E appr

关 键 词：复合材料修理 多模超声集成检测方法 单脉冲超声 非对称频率超声 空气耦合超声 无损检测与评估 

分 类 号：V25[一般工业技术—材料科学与工程] V267[航空宇航科学与技术—航空宇航制造工程]