摘要
针对铝合金轮毂铸造缺陷造成的汽车安全隐患问题,利用铝合金轮毂铸造缺陷超声波检测技术和原理,采用水浸式超声波检测方法对铝合金轮毂铸造缺陷进行检测,并利用小波变换时频图及超声C图像判断铝合金轮毂的铸造缺陷特征。研究结果表明:水浸式超声波检测技术对铝合金轮毂铸造缺陷的检测,结合超声波A型波和时频图可以判断出铝合金轮毂内部是否有缺陷存在及缺陷的大小和位置,且通过超声波A型波转换得到的超声C图像可以更加直观地判断出缺陷的特征。可见,我们设计的铝合金轮毂铸造缺陷超声波检测系统可用于缺陷检测。
In view of the hidden danger of automobile safety caused by the casting defects of aluminum alloy wheel hub,the study applied the method of water immersion ultrasonic testing technology to detect the casting defects of aluminum alloy wheel hub,and judged the characteristics of casting defects of aluminum alloy wheel hub with the time-frequency diagram of wavelet transform and the ultrasonic C image.The test results show that the detection of casting defects of aluminum alloy wheel hub with water immersion ultrasonic testing technology,combined with A-wave and time-frequency diagram,can identify the existence,size and location of defects in the aluminum alloy wheel hub,and the generated ultrasonic C image can more intuitively determine the characteristics of defects.It can be concluded that the developed ultrasonic detection system is feasible for casting defects of aluminum alloy wheel hub.
作者
柴亚珂
吴瑞明
胡益旻
陈凯旋
CHAI Yake;WU Ruiming;HU Yimin;CHEN Kaixuan(School of Mechanical and Energy Engineering,Zhejiang University of Science and Technology,Hangzhou 310023,Zhejiang,China)
出处
《浙江科技学院学报》
CAS
2019年第6期470-475,共6页
Journal of Zhejiang University of Science and Technology
关键词
铝合金轮毂
铸造缺陷
超声波检测
时频分析
C图像
aluminum wheel hub
casting defects
ultrasonic detection
time-frequency analysis
Cimage
