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1. 发明申请

WO0206814A3 A SYSTEM AND METHOD OF DETERMINING POROSITY IN COMPOSITE MATERIALS USING ULTRASOUND 审中-公开
标题翻译：用超声波测定复合材料中孔隙度的系统和方法
公开(公告)号：WO0206814A3
公开(公告)日：2002-09-26
申请号：PCT/US0122156
申请日：2001-07-13
申请人： LOCKHEED CORP
发明人： DUBOIS MARC , LORRAINE PETER W , DRAKE THOMAS E JR , FILKINS ROBERT J , DEATON JOHN B JR
IPC分类号： G01N29/00 , G01N15/08 , G01N29/11 , G01N29/24 , G01N29/46 , G01N29/10
CPC分类号： G01N29/30 , G01N29/11 , G01N29/2418 , G01N29/449 , G01N29/46 , G01N2291/014 , G01N2291/0231 , G01N2291/0245 , G01N2291/0289 , G01N2291/0421 , G01N2291/044
摘要： The invention provides for ultrasonically measuring the porosity in a sample composite material by accessing only one side of the sample composite material and includes the steps of measuring a sample ultrasonic signal from the sample composite material, normalizing the sample ultrasonic signal relative to the surface echo of the sample composite material, and isolating a sample back-wall echo signal from the sample ultrasonic signal. A sample frequency spectrum of the sample back-wall ultrasonic signal is then determined. Next, the method and system include the steps of measuring a reference ultrasonic signal from a reference composite material, normalizing the reference ultrasonic signal relative to the surface echo of the reference composite material; and isolating a reference back-wall echo signal from the sample ultrasonic signal. A reference frequency spectrum of the reference back-wall ultrasonic signal is then determined. The invention further includes deriving the ultrasonic attenuation of the sample ultrasonic signal as the ratio of the sample frequency spectrum to the reference frequency spectrum over a predetermined frequency range. Comparing the derived ultrasonic attenuation to predetermined attenuation standards permits evaluating the porosity of the sampled composite material.
摘要翻译：本发明提供了通过仅进入样品复合材料的一侧来超声测量样品复合材料中的孔隙率，并且包括以下步骤：测量来自样品复合材料的样品超声波信号，使样品超声波信号相对于表面回波样品复合材料，并从样品超声波信号中分离样品后壁回波信号。然后确定样本后壁超声信号的样本频谱。接下来，该方法和系统包括以下步骤：测量来自参考复合材料的参考超声信号，相对于参考复合材料的表面回波归一化参考超声信号; 并从样品超声波信号中分离参考后壁回波信号。然后确定参考后壁超声信号的参考频谱。本发明进一步包括导出样本超声波信号的超声波衰减，作为在预定频率范围内样本频谱与参考频谱的比率。导出的超声波衰减与预定的衰减标准比较可以评估采样的复合材料的孔隙率。

2. 发明申请

WO2009140468A3 METHOD AND APPARATUS FOR SPECTROSCOPIC CHARACTERIZATION OF SAMPLES USING A LASER-ULTRASOUND SYSTEM 审中-公开
标题翻译：使用激光超声系统对样品的光谱特征的方法和装置
公开(公告)号：WO2009140468A3
公开(公告)日：2010-01-07
申请号：PCT/US2009043906
申请日：2009-05-14
申请人： LOCKHEED CORP , LORRAINE PETER W , DRAKE THOMAS E JR , DEATON JOHN B JR , DUBOIS MARC , FILKINS ROBERT
发明人： LORRAINE PETER W , DRAKE THOMAS E JR , DEATON JOHN B JR , DUBOIS MARC , FILKINS ROBERT
IPC分类号： G01N29/12 , G01N29/24 , G01N29/44
CPC分类号： G01N29/2418 , G01N29/12 , G01N29/4409 , G01N2291/0231 , G01N2291/2694
摘要： A method of spectroscopic analysis of a material using a laser ultrasound system. The method includes measuring amplitude displacement of a target surface that has been excited with a generation laser. The amplitude displacements relate to the target's optical absorption properties. Amplitude displacements are generated over a range of laser wavelengths to obtain an optical absorption signature useful to identify the target material composition characteristics.
摘要翻译：使用激光超声系统对材料进行光谱分析的方法。该方法包括测量已经用发生激光器激发的目标表面的振幅位移。振幅位移与目标的光吸收特性有关。在激光波长范围内产生幅度位移以获得用于识别目标材料组成特征的光学吸收标记。

3. 发明申请

WO03016898A3 METHOD AND APPARATUS TO CONDUCT ULTRASONIC FLAW DETECTION FOR MULTI-LAYERED STRUCTURE 审中-公开
标题翻译：对多层结构进行超声波检测的方法和装置
公开(公告)号：WO03016898A3
公开(公告)日：2003-10-16
申请号：PCT/US0225886
申请日：2002-08-14
申请人： LOCKHEED CORP
发明人： DUBOIS MARC , LORRAINE PETER W
IPC分类号： G01N29/30 , G01N29/34 , G01N29/44 , G01N29/10
CPC分类号： G01N29/4427 , G01N29/0645 , G01N29/30 , G01N29/341 , G01N2291/0231 , G01N2291/044
摘要： An invention to measure of objects of non-homogeneous ultrasonic impedance in the testing path is provided to detect the present of flaws in any part of the object. The invention utilized a reference signal to compare against the actual signal derived from ultrasonic testing of the object. Reference signals are determined based upon the known or calculated properties of the object's layers or previously obtained signals measured from the object.
摘要翻译：提供了用于测量测试路径中的非均匀超声波阻抗的对象的发明，以检测对象的任何部分中的缺陷的存在。本发明利用参考信号与从物体的超声波测试得到的实际信号进行比较。参考信号是根据对象层的已知或计算属性或从对象测量的先前获得的信号来确定的。

4. 发明申请

WO03046544A2 METHOD TO CHARACTERIZE MATERIAL USING MATHEMATICAL PROPAGATION MODELS AND ULTRASONIC SIGNAL 审中-公开
标题翻译：使用数学传播模型和超声信号表征材料的方法
公开(公告)号：WO03046544A2
公开(公告)日：2003-06-05
申请号：PCT/US0237847
申请日：2002-11-25
申请人： LOCKHEED CORP , DUBOIS MARC , LORRAINE PETER W , FILKINS ROBERT J , DRAKE THOMAS E
发明人： DUBOIS MARC , LORRAINE PETER W , FILKINS ROBERT J , DRAKE THOMAS E
IPC分类号： G01N29/24 , G01N29/44 , G01N29/48 , G01N29/04 , G01S15/89
CPC分类号： G01N29/48 , G01N29/0645 , G01N29/2418 , G01N29/4418
摘要： The invention is directed to a system and method for detecting defects in a manufactured object. These defects may include flaws, delaminations, voids, fractures, fissures, or cracks, among others. The system utilizes an ultrasound measurement system, a signal analyzer and an expected result. The signal analyzer compares the signal from the measurement system to the expected result. The analysis may detect a defect or measure an attribute of the manufactured object. Further, the analysis may be displayed or represented. In addition, the expected result may be generated from a model such as a wave propagation model. One embodiment of the invention is a laser ultrasound detection system in which a laser is used to generate an ultrasonic signal. The signal analyzer compares the measured ultrasonic signal to an expected result. This expected result is generated from a wave propagation model. The analysis is then displayed on a monitor.
摘要翻译：本发明涉及一种用于检测制造对象中的缺陷的系统和方法。这些缺陷可能包括缺陷，分层，空隙，裂缝，裂缝或裂纹等。该系统利用超声测量系统，信号分析仪和预期结果。信号分析仪将来自测量系统的信号与预期结果进行比较。分析可以检测缺陷或测量所制造的对象的属性。此外，可以显示或表示分析。此外，可以从诸如波传播模型的模型生成预期结果。本发明的一个实施例是激光超声波检测系统，其中使用激光来产生超声波信号。信号分析仪将测量的超声信号与预期结果进行比较。该预期结果是从波传播模型产生的。然后将分析显示在监视器上。

5. 发明申请

WO0107865A3 SYSTEM AND METHOD FOR ULTRASONIC LASER TESTING USING A LASER SOURCE TO GENERATE ULTRASOUND HAVING A TUNABLE WAVELENGTH 审中-公开
标题翻译：用于使用激光源产生具有可调谐波长的超声的超声激光测试的系统和方法
公开(公告)号：WO0107865A3
公开(公告)日：2001-05-25
申请号：PCT/US0020403
申请日：2000-07-27
申请人： LOCKHEED CORP , LORRAINE PETER W , BIGIO LAURENCE , FILKINS ROBERT J
发明人： LORRAINE PETER W , BIGIO LAURENCE , FILKINS ROBERT J
IPC分类号： G01N29/00 , G01N29/24 , G01N29/34 , G01N29/50 , G10K15/04 , H01S3/00
CPC分类号： G01N29/348 , G01N29/2418 , G01N29/346 , G01N29/50 , G01N2291/015 , G01N2291/02854 , G10K15/046
摘要： A system and method for generating ultrasonic displacements on a remote target (102) is described. The method of the present invention includes the steps of first using a laser (10) to generate a beam (12) having a first wavelength gamma to produce ultrasonic displacements at the remote target. This laser beam will have a first wavelength gamma which can be modulated to alter characteristics of the ultrasonic displacements. These ultrasonic displacements at the remote target (102) can be optimized to enhance the detection optics for collecting phase modulated light from the second pulsed laser beam (104) either reflected or scattered by the remote target (102), an interferometer to processes the phase modulated light and generates at least one output signal, and means for processing the at least one output signal to obtain data representative of the ultrasonic surface displacements on the surface of the remote target.
摘要翻译：描述了用于在远程目标（102）上产生超声位移的系统和方法。本发明的方法包括首先使用激光器（10）产生具有第一波长γ的光束（12）以在远程目标处产生超声位移的步骤。该激光束将具有第一波长γ，其可以被调制以改变超声位移的特性。远程目标（102）处的这些超声位移可以被优化以增强用于收集来自第二脉冲激光束（104）的由远程目标（102）反射或散射的相位调制光的检测光学器件，干涉仪处理相位并且产生至少一个输出信号;以及用于处理所述至少一个输出信号以获得表示远程目标的表面上的超声表面位移的数据的装置。

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