APPLICATION OF FAST FOURIER TRANSFORM IN FRP COMPOSITE MATERIAL BONDING QUALITY INSPECTION

Abstract

Abstract: In this paper, through the Fourier transform and analysis of the ultrasonic signal of the bonding quality of steel/FRP, it is found that the ultrasonic resonance occurs in the steel. The resonance amplitude of FRP is obviously smaller than that of debonding ultrasonic signal because of the attenuation of ultrasonic signal when the bonding is good. By comparing the ultrasonic C-scan images under different characteristics, it is found that only the ultrasonic C-scan detection effect under the fundamental frequency amplitude is consistent with the conventional ultrasonic C-scan detection effect. Therefore, the ultrasonic amplitude frequency curve can be used to evaluate whether there is debonding at the bonding interface between steel/FRP.

Key words: fourier transform, bonding quality, ultrasonic C-scan, composites

CLC Number:

TB332

ZHENG Jin-hua, FENG Jun-wei, SHENG Tao, QIAN Yun-xiang. APPLICATION OF FAST FOURIER TRANSFORM IN FRP COMPOSITE MATERIAL BONDING QUALITY INSPECTION[J]. Composites Science and Engineering, 2020, 0(6): 79-83.

References

[1] 杨小兵, 田树桐. 玻璃钢在燃煤电厂湿烟囱中的应用研究[J]. 玻璃钢/复合材料, 2011(2): 39-42.
[2] 王飞, 盛涛, 涂俊, 等. 固体火箭发动机黏接壳体超声C扫描检测系统研制与应用[J]. 无损检测, 2020, 42(1): 78-80.
[3] 郭洪涛, 曹付齐. 固体火箭发动机装药界面胶接质量超声波检测[J]. 航空兵器, 2006(6): 49-52.
[4] 凡丽梅, 王从科, 郑杰, 等. 薄壁金属与非金属环形粘接件粘接质量超声检测方法研究[J]. 测试技术学报, 2014, 28(6): 489-493.
[5] Walker S V, Kim J Y, Qu J, et al. Fatigue damage evaluation in A36 steel using nonlinear rayleigh surface waves[J]. NDT&E International, 2012, 48(2): 10-15.
[6] Kim G, In C W, Kim J Y, et al. Air-coupled detection of nonlinear rayleigh surface waves in concrete: Application to microcracking detection[J]. NDT&E International, 2014, 67(8): 64-70.
[7] 侯怀书, 张世玮, 陆顶, 等. 304不锈钢晶粒尺寸的超声检测[J]. 机械工程材料, 2019, 43(12): 19-23.
[8] 刘云轩, 吴伟, 段宏健. 小径钛钢爆炸复合棒材超声检测信号时频分析[J]. 无损检测, 2019, 41(2): 8-15.
[9] 吴金锋, 孙加伟, 汪春晓, 等. 基于FFT的核电站反应堆控制棒组件的超声测厚[J]. 无损检测, 2017, 39(3): 40-43.
[10] 孙珞茗, 林莉, 马志远. 基于声压反射系数幅度谱特征的涂层脱粘超声C扫描成像检测研究[J]. 机械工程学报, 2019, 55(12): 44-49.
[11] 刘学坤, 杨世锡, 刘永强, 等. 圆柱类金属构件表面裂纹的激光超声识别方法研究[J]. 振动与冲击, 2020, 39(5): 10-17.
[12] 何海峰, 罗宇昆, 涂斌, 等. 自适应灰狼小波去噪法在变压器套管引线超声检测中的应用[J]. 无损检测, 2020, 42(3): 54-59.
[13] 艾春安, 蔡笑风, 刘继方, 等. 短时傅里叶变换声—超声检测信号缺陷识别[J]. 中国测试, 2015, 41(4): 29-31.
[14] 敦怡, 师小红, 徐章遂. 非线性超声在金属基复合材料结构界面粘接强度评价中的应用[J]. 中国机械工程, 2008, 19(19): 2351-2354.
[15] 陈军, 乔丹, 崔哲, 等. 黏接结构弱黏接缺陷的非线性超声评价[J]. 无损检测, 2019, 41(9): 60-64.