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2典型焊接缺陷的相控阵S-扫描图谱以下对两种典型焊接接头型式(V型坡口单面焊和T型接头组合焊)展示了9张典型焊接缺陷的相控阵S-扫描图例。单面焊接缺陷有:焊趾裂纹,近底面坡口未熔合,近表面未熔合,密集气孔;T型接头组合焊缺陷有:根部未焊透,翼板侧未熔合,焊道下裂纹,焊趾裂纹。为便于图像解释和评定,这里通过专用软件,特意添加了相应的焊缝探测布置截面图,绘出了焊接结构和线阵相控探头(包括线阵斜探头或线阵直探头)的布置及声线示踪图。S扫描图加探测布置
2 Phased Array S-Scan Pattern of Typical Weld Defects The following shows an example of phased array S-scan of nine typical weld defects for two typical weld joint patterns (V-groove single-sided and T-joint) . Single-sided welding defects are: weld toe crack, the near-bottom groove is not fused, the near surface is not fused, dense pores; T-joint combination of welding defects are: the root is not welded through the wing side fuse, cracks under the weld, welding Toe crack. In order to facilitate the interpretation and assessment of images, special welding software, specially added cross-sectional view of the welding seam detection layout, draw the layout of the welding structure and the linear array phased probe (including linear or linear array probe) Sound trace. S-scan plus detection arrangements