不等厚复合构件的相控阵超声脱粘检测技术研究

Research on Phased Array Ultrasonic Debond Testing Technology of Not Uniform Thickness Compound Compound

针对不等厚金属非金属复合构件的特点,提出了采用相控阵超声检测方式对该构件界面进行脱粘检测的方法。分别采用普通聚焦探头和相控阵探头对不等厚试块进行了脱粘检测实验,采用软件延时技术对相控阵检测实验数据按聚焦规律进行合成,得到相控阵检测方式的C扫描灰度图和二值化图,并计算了脱粘区域的位置和面积,检测结果与普通聚焦探头相比,可以看出相控阵检测技术具有较高的检测分辨率和检测能力。

According to the characteristic of the not uniform thickness compound component, phased array ultrasonic testing method is proposed to detect debonding on adhesive interface of this component.Debond testing experiment of not uniform thickness has carried on separately using the ordinary focused probe and the phased array probe.This paper synthesizes the experimental data of phased array probe making use of the focusing rule and the software time delay technology,then get the C-scan image and binary image to calculate the position and area of the debonding region.Comparing the testing results of phased array probe method and ordinary focused probe method,it can conclude that the phased array probe method has higher testing resolution and testing ability.