超声无损检测 ultrasonic nondestructive testing(55) ultrasonic non-destructive testing(9)   ultrasonic nondestructive testing     Application of two-dimensional signal analysis in ultrasonic nondestructive testing     二维信号分析法在超声无损检测中的应用 短句来源     Ultrasonic Nondestructive Testing System of Missile Launching Device     导弹发射设备超声无损检测系统设计 短句来源     The laser ultrasonic nondestructive testing technology is a new technique which developed at the end of the 20 century.     激光超声无损检测技术是20世纪末才发展起来的一种新型技术,它主要利用激光干涉技术,实现对物品损伤的精确定位。 短句来源     Facing to problems which are difficult to test defects and strength of adhesive bonds using traditional ultrasonic nondestructive testing(UNDT)me- thod,modern signal processing and UNDT are combined to solve the problems.     针对常规超声无损检测方法较难检测胶接缺陷和不能检测胶接强度的问题,本文将信号处理技术与超声无损检测技术结合起来,应用特征参数分析、模式识别和回归分析等现代信号处理技术解决胶接缺陷检测和胶接强度估计的问题. 短句来源     The Study of Ultrasonic Nondestructive Testing in Adhesive Bonds Based on Signal Processing     基于信号处理的胶接结构超声无损检测的研究 短句来源 更多          “超声无损检测”译为未确定词的双语例句     Development of New Broadband Ultrasonic Testing Technique for Nuclear Fuel Elements and Composites     宽频超声无损检测核燃料元件及复合结构技术研究 短句来源     Neural network characterization of flaws detected by ultrasonic approach     基于神经网络的超声无损检测缺陷定征方法的研究 短句来源     Sampling Rate Change in the Ultrasonic Testing System     抽样率转换在超声无损检测中的应用 短句来源     This paper is based on the project All-digital Phased-Array Ultrasonic Detection System assigned by Shanghai Science & Technology Commission. The main content is about the arithmetic and implementation.     本论文是上海市科委下达上海市计算技术研究所科研项目《全数字相控阵超声无损检测系统》的部分工作，侧重于算法的研究和实现。 短句来源     1. Supersound online detection system collect supersound can't harm detection technique , computer technology , digital signal treatment technology , numerical control technology in an organic whole, it is the technology intergration and embodiment of system integration;     1.超声在线检测系统集超声无损检测技术、计算机技术、数字信号处理技术、数控技术于一体,是技术集成和系统集成的体现; 短句来源 更多        查询“超声无损检测”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   ultrasonic nondestructive testing Development of Methods of Ultrasonic Nondestructive Testing of Welded Joints 例句来源       The methods of ultrasonic nondestructive testing of welded joints used in Russia are reviewed. 例句来源       A veteran tells about some episodes of coming into being ultrasonic nondestructive testing in Russia. 例句来源       Issues related to the solution of the direct and inverse problems of ultrasonic nondestructive testing are discussed. 例句来源       Issues related to the solution of the direct and inverse problems of ultrasonic nondestructive testing are discussed. 例句来源       更多             ultrasonic non-destructive testing Application of Hilbert-Huang signal processing to ultrasonic non-destructive testing of oil pipelines 例句来源       A Blind Source Separation Technique for Extracting Sinusoidal Interferences in Ultrasonic Non-Destructive Testing 例句来源                Facing to problems which are difficult to test defects and strength of adhesive bonds using traditional ultrasonic nondestructive testing(UNDT)me- thod,modern signal processing and UNDT are combined to solve the problems. Two new sets of features related tightly with the quality of adhesive bonds are defined.Feature analysis,pattern recognition and regressive analysis are applied to test defects and to estimate strength of adhesive bonds.The average reliability of defects classification is over 80%,and the ...             针对常规超声无损检测方法较难检测胶接缺陷和不能检测胶接强度的问题,本文将信号处理技术与超声无损检测技术结合起来,应用特征参数分析、模式识别和回归分析等现代信号处理技术解决胶接缺陷检测和胶接强度估计的问题.定义了两种新的特征参数——相位特征参数和复倒谱特征参数,研究结果表明这两种特征参数与胶接结构质量是密切相关的.胶接缺陷的平均识别率在80%以上,胶接强度的估计精度也令人满意.与信号处理技术相结合是超声无损检测技术的发展方向之一. 文摘来源          A methodology for the recognition of weld defects, detected by ultrasonic approach, has been developed within two stages. In the first stage, a selection of the shape parameters defining the pulse echo envelope reflected from a genertic flaws, and defined in the time domain, is performed by Fisher linear discriminant analysis. In the second stage, the classification is carried out by a three layered RBFN nerual network, where the input values are the parameters selected by Fisher analysis. With regard to t...             针对超声无损检测中缺陷分类难、分类结果可靠性差等问题，给出了一种以神经网络为基础的缺陷特征分类方法．利用Ｆｉｓｈｅｒ线性判别方法对表征缺陷特征的时域信号的波形参数进行了选择，并将这些参数作为神经网络的输入矢量对网络进行训练．用该网络对缺陷特征进行了识别，结果表明：神经网络的识别率远大于传统的贝叶斯分类方法． 文摘来源          The paper reviews the application of two dimension signal analysis in ultrasonic nondestructive testing (NDT) in recent years. The review contains 2-D Fast Fourier transform (FFT), Wigner-Ville distribution (WVD),Gabor transform(GT) and wavelet transform(WT). The advantage and weakness of each method are analysed.             本文综述了近年来二维信号分析法在超声无损检测（ＮＤＴ）中的应用，其中包括Ｍ维快速 Ｆｏｕｒｉｅｒ变换（ＦＦＴ）、 Ｗｉｇｎｅｒ－Ｖｉｌｌｅ分布（ＷＶＤ）、 Ｇａｂｏｒ变换（ＧＴ）和小波变换（ＷＴ）等，对它们各自在ＮＤＴ应用中的优缺点进行了分析比较和讨论． 文摘来源   << 更多相关文摘         相关查询: 超声无损检测信号 超声无损检测过程 无损检测 超声 超声变幅 超声穿刺 超声研 超声离子 超声碎裂 超声幅 超声振幅 超声溶血  对查询结果不满意

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