摘要
研究在考虑惩罚函数时,用遗传算法对声波场中二维缺陷形状的识别问题。首先建立介质参数扰动函数和散射场之间非线性关系的积分方程,进而将所关心的缺陷识别问题转化为关于扰动函数的反演,最后用遗传算法给出就后场散射远场测量时几种典型缺陷的识别结果。
The problem of identification of the shape of the two-dimension flaw in the acoustic wave field using genetic algorithm in view of penalty function is studied. Firstly, a set of nonlinear integral equation formation of acoustic wave scattering field and perturbation function of the media are derived. Furthermore, the problem of flaw identification that is concerned is transformed to the inversion about the perturbation function. Finally, some identification results are presented for the case of far field measurements and background scattering using the genetic algorithm.
出处
《石家庄铁道学院学报》
2004年第2期77-80,共4页
Journal of Shijiazhuang Railway Institute
关键词
缺陷
识别
遗传算法
惩罚函数
声波
flaw
identification
genetic algorithm
penalty function
acoustic wave
