金属圆棒超声螺旋扫查检测的合成孔径成像技术

李振杰, 蔡桂喜, 张博, 李经明, 李建奎

Synthetic Aperture Imaging Technology for Ultrasonic Spiral Scanning Detection of Metal Bars

LI Zhenjie, CAI Guixi, ZHANG Bo, LI Jingming, LI Jiankui

表1 人工缺陷位置及尺寸测量

Table 1 Location and size measurement of artificial defects

Hole Defect size Defect position number ϕ / mm ρ / mm α / (º) Design value Measured value Absolute error Design value Measured value Absolute error Design value Measured value Absolute error 1# 2.0 2.0 0 10.0 11.1 1.1 51 53 2 2# 2.0 2.0 0 10.0 10.8 0.8 74 72 2 3# 2.0 2.0 0 22.5 23.1 0.6 141 141 0 4# 2.0 2.0 0 22.5 23.8 1.3 151 151 0 5# 2.0 2.0 0 22.5 23.5 1.0 164 165 1 6# 1.0 1.4 0.4 22.5 23.7 1.2 235 234 1 7# 1.5 1.8 0.3 22.5 24.2 1.7 244 243 1 8# 2.0 2.0 0 22.5 24.6 2.1 254 255 1 9# 2.0 2.0 0 18.5 20.3 1.8 274 274 0 10# 2.0 1.8 0.2 14.5 15.9 1.4 294 295 1 11# 2.0 2.0 0 10.5 11.5 1.0 314 314 0