The sensitivity and signal to noise ratio(S/N) of multizone inspection were measured from a series of flat bottom holes,and C-scan images of a forged P/M superalloy sample were also provided.

• 针对大厚度粉末高温合金材料中微缺陷的检测难题,采用多区聚焦检测技术,对粉末高温合金微缺陷试样进行了检测灵敏度、信噪比和C扫描成像试验,并与普通单一探头聚焦检测结果进行比较。