复杂形状航空锻件超声检测技术研究  

Research of Ultrasonic Inspection for Complex Form Aircraft Forging Component

作　　者：吴思源[1] 周晓军[1] 杨辰龙[1] 江健[1] 

机构地区：[1]浙江大学机械与能源工程学院,浙江杭州310027

出　　处：《机床与液压》2006年第5期149-152,共4页Machine Tool & Hydraulics

摘　　要：在复杂形状航空锻件的超声自动检测过程中,由于锻件表面凹凸不平和各扫描点工件厚度不等,造成扫描程序难以根据各扫描点所采集的A型波进行缺陷自动识别,针对此问题,提出了基于工件厚度变化的“厚度-灰度”超声成像法,并在此基础上采用了基于模板匹配的缺陷识别方法,实验结果表明,上述方法能较好地提高航空锻件超声自动检测的效率和缺陷识别能力。In the ultrasonic auto inspection of complex form aircraft forging component, scanning program is hard to automatically recognize defect by the A - wave of each scanning point because of concavo - convex surface and variation thickness of the forging piece. To solve this problem, a thickness - gray ultrasonic imaging method based on thickness variation of workpiece was presented, and template matching method was adopted to improve the defect recognizing ability. Test results demonstrate these methods can improve test efficiency and defect recognizing ability.

关 键 词：航空锻件 超声检测 模板匹配 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]