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31. 发明授权

US07800762B2 Fiber-based mid-infrared generation laser for laser ultrasound inspection 有权
标题翻译：用于激光超声波检测的基于光纤的中红外发生激光
公开(公告)号：US07800762B2
公开(公告)日：2010-09-21
申请号：US11524046
申请日：2006-09-20
申请人： John B. Deaton, Jr. , Marc Dubois , Kenneth R. Yawn , Jeffery E. Maestas , Thomas E. Drake, Jr.
发明人： John B. Deaton, Jr. , Marc Dubois , Kenneth R. Yawn , Jeffery E. Maestas , Thomas E. Drake, Jr.
IPC分类号： G01B11/02
CPC分类号： G01N29/2418 , G01N2291/0231
摘要： Embodiments of the present invention relate to a laser system and method for the optical generation of ultrasound at a remote target. This involves generating a pump laser beam with a diode-pumped fiber laser. The diode pumped fiber laser is fiber-coupled with an optical fiber, either passive or diode pumped, to a generation laser head. The generation laser head generates a generation laser beam from the pump laser beam and directs the generation laser beam to the surface of the remote target. The interaction between generation laser beam and the surface of the remote target results in ultrasonic displacements at the remote target. These ultrasonic displacements may be sampled in order to assess and inspect the remote target.
摘要翻译：本发明的实施例涉及一种用于在远程目标处产生超声波的激光系统和方法。这涉及用二极管泵浦的光纤激光器产生泵浦激光束。二极管泵浦光纤激光器与被泵浦或无源二极管的光纤耦合到一代激光头。一代激光头从泵浦激光束产生一代激光束并将生成的激光束引导到远程靶的表面。发射激光束和远程目标表面之间的相互作用导致远程目标的超声波位移。可以对这些超声波位移进行采样，以评估和检查远程目标。

32. 发明授权

US07667851B2 Method and apparatus for using a two-wave mixing ultrasonic detection in rapid scanning applications 有权
标题翻译：在快速扫描应用中使用双波混频超声波检测的方法和装置
公开(公告)号：US07667851B2
公开(公告)日：2010-02-23
申请号：US10060983
申请日：2002-01-30
申请人： Marc Dubois , Thomas E. Drake , Robert J. Filkins , Peter W. Lorraine
发明人： Marc Dubois , Thomas E. Drake , Robert J. Filkins , Peter W. Lorraine
IPC分类号： G01B11/02
CPC分类号： G01N29/2418 , G01B9/02065 , G01B9/02081 , G01B11/164 , G01B2290/70 , G01D5/266 , G01N21/453 , G01N2291/0427 , G01N2291/269
摘要： The invention is directed to a wave characteristic adjusting device used to compensate for a wave characteristic distortion caused by the scanning motion of a probe beam of a two-wave mixing interferometer. The invention is also directed to an apparatus and method for using the wave characteristic adjusting device in a rapid scanning laser ultrasound testing device. In a rapid scanning laser ultrasound testing device, a laser pulse is directed at periodic points along a path across the surface of a manufactured object. The laser pulse initiates an ultrasonic signal associated with the manufactured object. An interferometer may be used to measure the initiated ultrasonic signal. The interferometer scans a probe beam along a path similar to the sonic initiating laser. A pulse of the probe beam is directed at the manufactured object in the vicinity of the initiating laser pulse while continuously scanning. As a result, the probe beam pulse may exhibit a Doppler shift. This Doppler shift may cause a loss in sensitivity of the two-wave mixing interferometer. The wave characteristic adjusting device may be used to compensate for the Doppler shift, thereby improving the sensitivity of the two-wave mixing interferometer.
摘要翻译：本发明涉及一种波特性调节装置，用于补偿由双波混频干涉仪的探测光束的扫描运动引起的波特性失真。本发明还涉及一种在快速扫描激光超声波检测装置中使用波特性调节装置的装置和方法。在快速扫描激光超声测试装置中，激光脉冲沿着穿过制造对象表面的路径的周期性点。激光脉冲启动与制造对象相关联的超声波信号。可以使用干涉仪来测量所引发的超声波信号。干涉仪沿着类似于声音启动激光器的路径扫描探测光束。探头光束的脉冲在连续扫描的同时在起始激光脉冲附近被引导到制造对象。结果，探测光束脉冲可以表现出多普勒频移。该多普勒频移可能导致双波混频干涉仪的灵敏度损失。波特性调整装置可以用于补偿多普勒频移，从而提高双波混频干涉仪的灵敏度。

33. 发明申请

US20090287450A1 VISION SYSTEM FOR SCAN PLANNING OF ULTRASONIC INSPECTION 审中-公开
标题翻译：超声检查扫描规划视觉系统
公开(公告)号：US20090287450A1
公开(公告)日：2009-11-19
申请号：US12122158
申请日：2008-05-16
申请人： Marc Dubois , Thomas E. Drake, JR. , Mark A. Osterkamp , David L. Kaiser , Tho X. Do , Kenneth R. Yawn
发明人： Marc Dubois , Thomas E. Drake, JR. , Mark A. Osterkamp , David L. Kaiser , Tho X. Do , Kenneth R. Yawn
IPC分类号： G01B11/00
CPC分类号： G01N29/2418 , G01B11/2518
摘要： A system and method for the analysis of composite materials. Structured light measurements are used to determine the 3-dimensional shape of an object, which is then analyzed to minimize the number of scans when performing laser ultrasound measurements.
摘要翻译：一种用于复合材料分析的系统和方法。结构光测量用于确定物体的三维形状，然后对其进行分析，以便在执行激光超声测量时最大限度地减少扫描次数。

34. 发明申请

US20090287427A1 VISION SYSTEM AND METHOD FOR MAPPING OF ULTRASONIC DATA INTO CAD SPACE 审中-公开
标题翻译：将超声数据映射到CAD空间的视觉系统和方法
公开(公告)号：US20090287427A1
公开(公告)日：2009-11-19
申请号：US12122119
申请日：2008-05-16
申请人： Marc Dubois , Thomas E. Drake, JR. , David L. Kaiser , Mark A. Osterkamp
发明人： Marc Dubois , Thomas E. Drake, JR. , David L. Kaiser , Mark A. Osterkamp
IPC分类号： G01B11/30 , G01B17/00
CPC分类号： G01B11/25 , G01B17/06
摘要： A system and method for the analysis of composite materials. Laser ultrasound measurements of composite materials are correlated to the shape and position of the composite article.
摘要翻译：一种用于复合材料分析的系统和方法。复合材料的激光超声测量与复合制品的形状和位置相关。

35. 发明申请

US20090282919A1 MID-IR LASER FOR GENERATION OF ULTRASOUND USING A CO2 LASER AND HARMONIC GENERATION 有权
标题翻译：使用二氧化碳激光和谐波生成的超声波发生器的中红外激光
公开(公告)号：US20090282919A1
公开(公告)日：2009-11-19
申请号：US12121012
申请日：2008-05-15
申请人： Thomas E. Drake, JR. , Marc Dubois , Peter W. Lorraine , John B. Deaton, JR. , Robert Filkins
发明人： Thomas E. Drake, JR. , Marc Dubois , Peter W. Lorraine , John B. Deaton, JR. , Robert Filkins
IPC分类号： G01N9/04
CPC分类号： G01N29/2418 , G01N21/1702 , G01N2021/1706
摘要： A mid infrared range laser source for ultrasound inspection that comprises a high energy laser coupled with one or more harmonic generation devices. The high energy laser may be a CO2 laser and tuned to emit laser light at a single wavelength. The harmonic generation devices convert the laser beam into the mid infrared range for optimal ultrasound inspection.
摘要翻译：用于超声检查的中红外范围激光源，其包括与一个或多个谐波发生装置耦合的高能量激光器。高能激光器可以是CO 2激光器并被调谐以在单个波长处发射激光。谐波发生装置将激光束转换为中红外范围，以实现最佳超声检查。

36. 发明申请

US20090010285A1 Articulated robot for laser ultrasonic inspection 有权
标题翻译：用于激光超声波检测的铰接机器人
公开(公告)号：US20090010285A1
公开(公告)日：2009-01-08
申请号：US11709342
申请日：2007-02-21
申请人： Marc Dubois , Thomas E. Drake, JR. , Kenneth Yawn , Mark Osterkamp
发明人： Marc Dubois , Thomas E. Drake, JR. , Kenneth Yawn , Mark Osterkamp
IPC分类号： H01S3/30 , G01B11/14
CPC分类号： G01N21/1702 , G10K15/046
摘要： An ultrasonic non-destructive evaluation (NDE) system operable to inspect target materials is provided. This ultrasonic NDE system includes an articulated robot, an ultrasound inspection head, a processing module, and a control module. The ultrasound inspection head couples to or mounts on the articulated robot. The ultrasound inspection head is operable to deliver a generation laser beam, a detection laser beam, and collect phase modulated light scattered by the target materials. The processing module processes the phase modulated light and produces information about the internal structure of the target materials. The control module directs the articulated robot to position the ultrasound inspection head according to a pre-determined scan plan.
摘要翻译：提供可操作以检查目标材料的超声波无损评估（NDE）系统。该超声波NDE系统包括铰接机器人，超声检查头，处理模块和控制模块。超声波检查头与铰接式机器人连接或安装在关节式机器人上。超声波检查头可操作地传送一代激光束，检测激光束，并收集由目标材料散射的相位调制光。处理模块处理相位调制光并产生关于目标材料的内部结构的信息。控制模块根据预先确定的扫描计划指示关节式机器人定位超声检查头。

37. 发明申请

US20080316498A1 APPARATUS AND METHOD FOR TWO WAVE MIXING (TWM) BASED ULTRASONIC LASER TESTING 有权
标题翻译：用于双波混频（TWM）的超声波激光测试的装置和方法
公开(公告)号：US20080316498A1
公开(公告)日：2008-12-25
申请号：US11553485
申请日：2006-10-27
申请人： Thomas E. Drake, JR. , Marc Dubois
发明人： Thomas E. Drake, JR. , Marc Dubois
IPC分类号： G01B9/02
CPC分类号： G01N29/2418 , G01B9/02083 , G01B2290/65 , G01N2291/0231
摘要： A system and method for detecting ultrasonic surface displacements at a remote target are disclosed, one embodiment of the system comprising: a first laser to generate a first laser beam. The first laser beam produces ultrasonic surface displacements on a surface of the remote target. A second laser generates a second laser beam operable to detect the ultrasonic surface displacements on the surface of the remote target and to provide a reference beam to an interferometer. The second laser beam is split, at a beam-splitter, into a pump beam and a probe beam. The pump beam is amplified by a first amplifier and the probe beam is amplified by a second amplifier. The pump beam is then provided to the interferometer as a reference beam and the probe beam is directed to the target to detect the ultrasonic surface displacements. The first and second amplifiers can be controlled independently of one another to control their respective laser beam's power. Collection optics collect phase modulated light from the probe beam either reflected or scattered by the remote target, which can be optionally optically processed to increase the light intensity. The interferometer is a TWM interferometer that receives and processes the phase modulated light and generates at least one output signal based on the phase-modulated light and the amplified reference laser beam.
摘要翻译：公开了一种用于在远程目标处检测超声表面位移的系统和方法，该系统的一个实施例包括：第一激光器，用于产生第一激光束。第一激光束在远程目标的表面上产生超声表面位移。第二激光器产生可操作以检测远程目标表面上的超声波表面位移并向干涉仪提供参考光束的第二激光束。第二激光束在分束器处分成泵浦光束和探测光束。泵浦光束由第一放大器放大，并且探测光束被第二放大器放大。然后将泵浦光束作为参考光束提供给干涉仪，并将探测光束引导到目标以检测超声波表面位移。可以彼此独立地控制第一和第二放大器以控制它们各自的激光束的功率。收集光学器件收集来自探测光束的相位调制光，其被远程目标物反射或散射，其可以可选地被光学处理以增加光强度。干涉仪是TWM干涉仪，其接收和处理相位调制光并且基于相位调制光和放大的参考激光束产生至少一个输出信号。

38. 发明申请

US20080291963A1 Fiber-based mid-infrared generation laser for laser ultrasound inspection 有权
标题翻译：用于激光超声波检测的基于光纤的中红外发生激光
公开(公告)号：US20080291963A1
公开(公告)日：2008-11-27
申请号：US11524046
申请日：2006-09-20
申请人： John B. Deaton, JR. , Marc Dubois , Kenneth R. Yawn , Jeffery E. Maestas , Thomas E. Drake, JR.
发明人： John B. Deaton, JR. , Marc Dubois , Kenneth R. Yawn , Jeffery E. Maestas , Thomas E. Drake, JR.
IPC分类号： H01S3/09
CPC分类号： G01N29/2418 , G01N2291/0231
摘要： Embodiments of the present invention relate to a laser system and method for the optical generation of ultrasound at a remote target. This involves generating a pump laser beam with a diode-pumped fiber laser. The diode pumped fiber laser is fiber-coupled with an optical fiber, either passive or diode pumped, to a generation laser head. The generation laser head generates a generation laser beam from the pump laser beam and directs the generation laser beam to the surface of the remote target. The interaction between generation laser beam and the surface of the remote target results in ultrasonic displacements at the remote target. These ultrasonic displacements may be sampled in order to assess and inspect the remote target.
摘要翻译：本发明的实施例涉及一种用于在远程目标处产生超声波的激光系统和方法。这涉及用二极管泵浦的光纤激光器产生泵浦激光束。二极管泵浦光纤激光器与被泵浦或无源二极管的光纤耦合到一代激光头。一代激光头从泵浦激光束产生一代激光束并将生成的激光束引导到远程靶的表面。发射激光束和远程目标表面之间的相互作用导致远程目标的超声波位移。可以对这些超声波位移进行采样，以评估和检查远程目标。

39. 发明申请

US20060227398A1 Data storage devices and methods 有权
标题翻译：数据存储设备和方法
公开(公告)号：US20060227398A1
公开(公告)日：2006-10-12
申请号：US11376545
申请日：2006-03-15
申请人： Brian Lawrence , Marc Dubois , Pingfan Wu , Joseph Smolenski , Xiaolei Shi , Eugene Boden
发明人： Brian Lawrence , Marc Dubois , Pingfan Wu , Joseph Smolenski , Xiaolei Shi , Eugene Boden
IPC分类号： G02B5/32
CPC分类号： G11B7/245 , G02B5/32 , G03H2001/0417 , G11B7/0065 , G11B7/00772 , G11B7/00781 , G11B7/131 , G11B7/1362 , G11B7/1369 , G11B7/24012 , G11B7/24038 , G11B7/24044 , G11B7/24085 , G11B7/246 , G11B7/261 , G11B7/28 , G11B20/00086 , G11B20/00115 , G11B20/10 , G11B2007/0013
摘要： A data storage device including: a plastic substrate having a plurality of volumes arranged in tracks along a plurality of vertically stacked, laterally extending layers therein; and, a plurality of micro-holograms each contained in a corresponding one of the volumes; herein, the presence or absence of a micro-hologram in each of the volumes is indicative of a corresponding portion of data stored.
摘要翻译：一种数据存储装置，包括：塑料基板，具有沿着多个垂直堆叠的横向延伸的层布置在轨道中的多个体积; 以及各自包含在相应的一个体积中的多个微全息图; 这里，每个体积中存在或不存在微全息图表示存储的数据的相应部分。

40. 发明授权

US06684701B2 System and method of determining porosity in composite materials using ultrasound 有权
标题翻译：使用超声波测定复合材料孔隙度的系统和方法
公开(公告)号：US06684701B2
公开(公告)日：2004-02-03
申请号：US09905444
申请日：2001-07-13
申请人： Marc Dubois , John B. Deaton, Jr. , Peter W. Lorraine , Thomas E. Drake, Jr. , Robert J. Filkins
发明人： Marc Dubois , John B. Deaton, Jr. , Peter W. Lorraine , Thomas E. Drake, Jr. , Robert J. Filkins
IPC分类号： G01H100
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访问样品复合材料的一侧来超声波测量样品复合材料中的孔隙率，并且包括以下步骤：从样品复合材料测量样品超声波信号，使样品超声信号相对于表面回波归一化样品复合材料，并从样品超声波信号中分离样品后壁回波信号。然后确定样品后壁超声波信号的采样频谱。接下来，该方法和系统包括以下步骤：从参考复合材料测量参考超声波信号，使参考超声信号相对于参考复合材料的表面回波标准化; 并从样本超声波信号隔离参考后壁回波信号。然后确定参考后壁超声波信号的参考频谱。本发明还包括将样本超声波信号的超声波衰减导出为在预定频率范围内的采样频谱与参考频谱的比率。将得到的超声波衰减与预定的衰减标准进行比较，可以评估采样的复合材料的孔隙率。

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