Extremum Search Based Welding Defect Inspecting Algorithm of X-ray Digital Sensor

Sensors & Transducers

Liang TAO¹  Guangxian ZHANG²  Wei LIANG² 

[1] School of Information and Electrical Engineering, Shandong Jianzhu University, Jinan 250101, China;Department of Control Science and Engineering Shandong University, Jing 10 Road, Jinan, Shandong, 250061, China ;

关键词: X-ray digital imaging;    Welding line;    Defect detection;    Image processing.;   

DOI  :  

来源: DOAJ

【 摘 要 】

This paper briefly presents an inspecting algorithm of welding defect location based on grayscale value distribution curve. It is used to locate the welding line position and the defects. Firstly, the amorphous silicon detector based system acquires original digital images. The noise was suppressed by average time field method. Furthermore, the aliasing between the defects and the noise was decreased. The grayscale value summation was adopted to extract the welding line. The attenuation law demonstrated that the transmitted X-ray intensity is directly proportional to the input intensity and inversely proportional to the workpiece thickness. It adopts the curve of line gray value of weld to discover the location of welding defect. The experimental result proved high accuracy and efficiency.

【 授权许可】

Unknown