公开(公告)号：US4507966A

公开(公告)日：1985-04-02

申请号：US438958

申请日：1982-10-03

申请人： Horst-Artur Crostack

发明人： Horst-Artur Crostack

IPC分类号： G01B9/021 ,  G01H9/00 ,  G01S15/89 ,  G03H3/00

CPC分类号： G01H9/002 ,  G01B9/021 ,  G01S15/897

摘要： In the disclosed method and structure a pulse of a sound filed to be mapped is illuminated at at least two extremes values at different moments with a laser beam of short duration compared to the period of the illuminated sound pulse and interference produced between the resulting reflected beam and a reference beam. A holographic image is formed. The relative phase of the laser pulse and the reference is changed between the individual illuminations by a preselectable amount which deviates from .pi. and which suppresses the optical and/or acoustical noise. Specifically, a time delay initiates the first illumination process when an extreme value is reached at the beginning of the sound pulse to be mapped. A counter is started by this time delay and counts the half and quarter waves of the sound pulse. The counter initiates an additional illumination process after a preselectable odd number has been reached. A phase shifter changes the relative phase between the object beam and the reference beam.

摘要翻译： 在所公开的方法和结构中，与被照射的声音脉冲的周期相比，具有短持续时间的激光束的不同时刻的至少两个极值被照亮的要被映射的声场的脉冲和在所得到的反射光束之间产生的干扰 和参考光束。 形成全息图像。 激光脉冲和基准的相对相位在各个照明之间改变偏离pi的可预选量并且抑制光学和/或声学噪声。 具体地说，在要映射的声音脉冲的开始处达到极值时，时间延迟启动第一照明处理。 计时器由此时间延迟开始，并对声脉冲的半波和四分之一波进行计数。 在达到预先选择的奇数之后，计数器启动附加的照明过程。 移相器改变对象光束和参考光束之间的相对相位。

公开(公告)号：US4271705A

公开(公告)日：1981-06-09

申请号：US97832

申请日：1979-11-26

申请人： Horst-Artur Crostack

发明人： Horst-Artur Crostack

IPC分类号： B06B1/02 ,  G01S15/02 ,  G01N29/04

CPC分类号： G01S15/02 ,  B06B1/0215

摘要： A method and device for generating acoustic pulses, preferably ultrasonic, and the use of such pulses, more particularly for non-destructive material testing. The acoustic pulses are produced by a modulation or multiplication technique.

摘要翻译： 用于产生优选超声波的声脉冲的方法和装置以及这种脉冲的使用，更具体地用于非破坏性材料测试。 声脉冲通过调制或乘法技术产生。

公开(公告)号：US4803428A

公开(公告)日：1989-02-07

申请号：US2865

申请日：1987-01-13

申请人： Horst-Artur Crostack

发明人： Horst-Artur Crostack

IPC分类号： G01B7/06 ,  G01B15/02 ,  G01M99/00 ,  G01N27/20 ,  G01B7/10 ,  G01N27/72 ,  G01R33/12

CPC分类号： G01B7/10 ,  G01B15/02

摘要： A method and apparatus for the determination of thickness of plastic materials, as well as of bonding and coating materials, by high frequency electric and magnetic alternating fields. The method enables a simple test of components, as well as of coatings and bondings, even if the plastic parts to be tested or the coatings or bondings to be tested are not yet completely cured and the surfaces to be tested are located, so as to be concealed or are accessible only with difficulty. The method and apparatus consists in that electrically conductive or ferromagnetic particles are added to the materials to be measured and subsequently the electrical conductivity or magnetic permeability is measured at the completed or coated test specimen by high-frequency electrical and magnetic alternating fields, whose progression in space and time is adapted to the measuring task.

摘要翻译： 一种用于通过高频电场和磁场交变场确定塑料材料厚度以及粘合和涂层材料的方法和装置。 即使要测试的塑料部件或待测试的涂层或粘合剂尚未完全固化并且要测试的表面位于该方法，该方法能够简单地测试部件以及涂层和粘合，以便 被隐藏或只有困难才能访问。 该方法和装置在于将导电或铁磁性颗粒加入待测量的材料中，随后在完成或涂覆的测试样品上通过高频电磁交变场测量导电性或导磁率， 空间和时间适应测量任务。

公开(公告)号：US4531410A

公开(公告)日：1985-07-30

申请号：US492414

申请日：1983-05-06

申请人： Horst-Artur Crostack

发明人： Horst-Artur Crostack

IPC分类号： G01N29/06 ,  G01S15/89 ,  G01N29/04

CPC分类号： G01N29/0663 ,  G01S15/897

摘要： In a method of and an apparatus for detecting flaws inside articles, the flaw area for detection being subjected to ultrasonic pulses on which, after reaction with the flaw, a reference beam is superimposed, whereupon the resulting interference field is holographically detected, reconstructed and evaluated. This method can be applied to thin and sound-scattering materials with improved resolution and a description of the flaw configuration and detection of the deformation behavior of flaws. In the method, a load is applied to the flaw area under investigation and this area is subjected to ultrasonic pulses at least at two different times each corresponding to an extreme value of the loading, the ultrasonic pulses being short with respect to the load period and, after reaction with the flaw, reference pulses are superimposed on the ultrasonic pulses, whereupon the holograms of these ultrasonic applications are superimposed to give an interferogram which can be evaluated. The block schematic diagram of an apparatus for performing the method is shown in FIG. 1, in which reference 1 denotes a loading unit, 3 an ultrasonic transmitter and the units 11-5 form a control unit.

摘要翻译： 在用于检测物品内的瑕疵的方法和装置中，用于检测的缺陷区域经受超声波脉冲，其上与缺陷反应之后叠加参考光束，从而对所得到的干涉场进行全息检测，重建和评估 。 该方法可以应用于具有改进的分辨率和缺陷构造的描述以及缺陷的变形行为的检测的薄和声散射材料。 在该方法中，将负载施加到被研究的缺陷区域，该区域至少在两个不同的时间进行超声波脉冲，每个时间对应于负载的极值，超声波脉冲相对于负载周期短; 在与缺陷反应之后，将参考脉冲叠加在超声波脉冲上，由此叠加这些超声波应用的全息图以产生可被评估的干涉图。 用于执行该方法的装置的方块示意图如图1所示。 在图1中，附图标记1表示加载单元，3表示超声波发送器，单元11-5形成控制单元。