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1. 发明授权

US5038615A Ultrasonic multilayer paint thickness measurement 失效
标题翻译：超声波多层涂料厚度测量
公开(公告)号：US5038615A
公开(公告)日：1991-08-13
申请号：US521875
申请日：1990-05-11
申请人： Frederick J. Trulson , August F. Scarpelli , George L. Sarosy
发明人： Frederick J. Trulson , August F. Scarpelli , George L. Sarosy
IPC分类号： G01B17/02
CPC分类号： G01B17/025
摘要： Ultrasonic thickness measurement of layers of paint on a substrate produces pulse echoes indicative of each layer interface. Several ultrasonic waveforms are averaged in a digital oscilloscope and the resultant waveform is analyzed by a computer programmed to recognize wave forms resembling pulse echoes, compare such waveforms to stored reference waveform characteristics, and selecting the waveform having the best fit to the reference. Each selected pulse echo is graded based on amplitude, peak separation, peak symmetry, and spacing from a previous echo to determine the quality of the waveform. Layer thickness is calculated from the spacing between pulse echoes and the velocity of sound in the layer material.
摘要翻译：衬底上涂层层的超声波厚度测量产生指示每层界面的脉冲回波。在数字示波器中对几个超声波波形进行平均，并通过编程为识别类似于脉冲回波的波形的计算机分析结果波形，将这些波形与存储的参考波形特性进行比较，并选择具有最佳拟合参考的波形。每个选择的脉冲回波基于振幅，峰值分离，峰值对称性和与先前回波的间隔进行分级，以确定波形的质量。层厚度根据脉冲回波之间的间距和层材料中的声速来计算。

2. 发明授权

US4711984A Ultrasonic method and apparatus for spot weld control 失效
标题翻译：用于点焊控制的超声波方法和装置
公开(公告)号：US4711984A
公开(公告)日：1987-12-08
申请号：US23250
申请日：1987-03-09
申请人： Umit Bilge , August F. Scarpelli , Ronald E. Schwartz , John J. Ross
发明人： Umit Bilge , August F. Scarpelli , Ronald E. Schwartz , John J. Ross
IPC分类号： B23K11/24 , B23K11/25 , G01N29/04 , G01N29/07
CPC分类号： G01N29/07 , B23K11/252 , G01N2291/02863 , G01N2291/048 , G01N2291/2672
摘要： Ultrasonic transducers spring biased into seating engagement in a pair of opposed spot welding tips transmit and receive ultrasonic waves and associated circuitry measures the time of flight between the transducers which is a function of tip separation, workpiece temperature and nugget size which are indicators of the progress of a weld. The rate of change of flight time is measured and the weld current is adjusted early in the weld cycle to maintain a preset rate of weld growth. The weld current is terminated later in the cycle if the transit time rate falls below another preset value. Otherwise the weld current and termination time follow a standard schedule.

3. 发明授权

US5210688A Sinography method and apparatus 失效
标题翻译：记录方法和仪器
公开(公告)号：US5210688A
公开(公告)日：1993-05-11
申请号：US526263
申请日：1990-05-21
申请人： Yen F. Cheu , August F. Scarpelli
发明人： Yen F. Cheu , August F. Scarpelli
IPC分类号： G06T5/00
CPC分类号： G06T5/002 , G06T5/003 , G06T5/10 , G06T5/20 , G06T2207/10116 , G06T2207/20056 , G06T2207/20192 , G06T2207/30004 , Y10S378/901
摘要： Tomography apparatus is used to irradiate a body cross section and acquire a relatively small amount of data which is mapped into a two dimensional array or sinogram and image enhancement techniques are applied to the sinogram to reveal visible lines representing flaws. An array processor operates on the sinogram to perform edge enhancement and averaging convolutions, a fast Fourier transform, low pass filtering in frequency domain, and an inverse fast Fourier transform to generate the enhanced sinogram.
摘要翻译：层析成像装置用于照射身体横截面并获取映射成二维阵列或正弦图的相对较少量的数据，并且将图像增强技术应用于正弦图以揭示表示缺陷的可见线。阵列处理器在正弦图上操作以执行边缘增强和平均旋转，快速傅立叶变换，频域中的低通滤波，以及快速傅里叶逆变换，以产生增强的正弦图。

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