自由曲面的非等参数超声检测轨迹生成算法  

Algorithm of Non-isoparametric Path Generation for Ultrasonic Inspection of Sculptured Surfaces

作　　者：杜兴吉[1] 周晓军[1] 吴思源[1] 江健[1] 

机构地区：[1]浙江大学机械与能源工程学院,杭州310027

出　　处：《中国机械工程》2004年第20期1804-1807,共4页China Mechanical Engineering

摘　　要：针对复杂曲面工件内部缺陷的超声检测 ,提出了一种新的近似等弧长超声检测轨迹生成算法。该方法采用近似等弧长方法对参数重新进行参数化 ,使生成的扫查点间距分布更合理 ,与等参数的复杂曲面超声检测轨迹生成法相比 ,在满足扫查要求的前提下 ,检测点数明显减少 ,从而可生成更有效的检测轨迹。仿真实验表明 ,所提出的方法是有效、可行的 。Aimed at internal defect ultrasonic inspection for sculptured surface parts, the paper presented a new nearly arc-length approach to path generation. The proposed methodology generates the better distribution inspection point using nearly arc-length based parametric redistribution method. Compared with constant parametric path generation methods, the proposed methodology can generate efficient paths for sculptured surface inspection by reducing the numbers of inspection points, while maintaining inspection demand. A simulation example shows the algorithm is effective and practical. The techniques presented in this paper can be used to improve inspection efficiency of parts and to exploit the current capabilities of inspection system for better inspection efficiency.

关 键 词：复杂曲面 缺陷探测 弧长参数化 超声检测 轨迹生成 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]