压力容器2025，Vol.42Issue(9)：51-59,9.DOI:10.3969/j.issn.1001-4837.2025.09.007
碳纤维复合材料单向板超声衰减补偿的全聚焦成像优化研究
Research on full focusing imaging optimization with ultrasonic attenuation compensation for carbon fiber reinforced plastics unidirectional plate
摘要
Abstract
The ultrasonic signal has serious attenuation in the detection of carbon fiber reinforced plastics(CFRP),which leads to the reduction of detection accuracy,difficulty in inspection,and the possibility of missing defects.In response to the above problems,a method for compensating the attenuation of ultrasonic signals by calculating the attenuation coefficient of the unidirectional plate of CFRP was proposed.The distance attenuation coefficient and the directivity correction coefficient were obtained respectively through calculation,and the accuracy of the attenuation coefficient was verified through test.The results show that the theoretical calculated amplitude is quite close to the actual measured amplitude,with the error range of 8%to 15%.When performing ultrasonic phased array total focusing method(TFM)imaging,the addition of attenuation coefficient compensation significantly enhances the image amplitude,and the signal-to-noise ratio increases by 8.838 2 dB to 28.515 2 dB.The research results can provide ideas and methods for solving the high attenuation problem of CFRP and noise reduction.关键词
碳纤维复合材料/超声相控阵/衰减系数Key words
carbon fiber reinforced plastic/ultrasonic phased array/attenuation coefficient分类
机械制造引用本文复制引用
刘佳鹏,陈学东,范志超,徐相庭,程经纬..碳纤维复合材料单向板超声衰减补偿的全聚焦成像优化研究[J].压力容器,2025,42(9):51-59,9.基金项目
国家重点研发计划项目(2021YFB4000800) （2021YFB4000800）
国家重点攻关项目(2023ZY01001) （2023ZY01001）
国家自然科学基金项目(52202412) （52202412）
