CAJ | 학술논문

现代超声无损检测技术正向着数字化、自动化、智能化和系统化方向发展,材料缺陷检测中定位、定性、定量的可靠性将不断得到提高,超声波频谱分析是把数字频域分析的理论和方法应用于超声检测的技术.作者综述分析了在材料缺陷检测中超声频谱分析技术的应用发展和研究现状,指出简单的超声波原始信号能够提供的信息是有限的,远不能满足声波分析和特征识别的需要,须对其进行一定的加工和处理.通过对域函数图谱的识别、特征提取和分析,能获得更多有用信息,以便更好地指导工程实践.
현대초성무손검측기술정향착수자화、자동화、지능화화계통화방향발전,재료결함검측중정위、정성、정량적가고성장불단득도제고,초성파빈보분석시파수자빈역분석적이론화방법응용우초성검측적기술.작자종술분석료재재료결함검측중초성빈보분석기술적응용발전화연구현상,지출간단적초성파원시신호능구제공적신식시유한적,원불능만족성파분석화특정식별적수요,수대기진행일정적가공화처리.통과대역함수도보적식별、특정제취화분석,능획득경다유용신식,이편경호지지도공정실천.
Modern ultrasonic testing is developing towards digitization,automation,intelligentization,systematization. The reliability of location, quantitative and identification of the defects will be constantly improved. Ultrasonic spectrum analysis is the ultrasonic testing technology which puts into use the spectrum analysis theory and approach. The application of ultrasonic spectrum analysis and its developing prospect for flaw recognition are pointed out. Generally speaking, simple and primitive ultrasonic signals can provide relatively limited information and therefore are far from satisfying the need of sonic analysis and feature recognition. Through recognition of domain function chart as well as feature extraction and analysis, more useful information can be obtained to instruct the engineering application.