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    PRE-AMPLIFIER FOR DETECTION LASERS WITHIN LASER ULTRASONIC INSPECTION SYSTEMS
    1.
    发明申请
    PRE-AMPLIFIER FOR DETECTION LASERS WITHIN LASER ULTRASONIC INSPECTION SYSTEMS 有权
    用于激光超声波检测系统中检测激光器的前置放大器

    公开(公告)号：US20080181268A1

    公开(公告)日：2008-07-31

    申请号：US11688379

    申请日：2007-03-20

    申请人： Marc Dubois ,  Thomas E. Drake ,  Kenneth R. Yawn

    发明人： Marc Dubois ,  Thomas E. Drake ,  Kenneth R. Yawn

    IPC分类号： G01B11/16 ,  H01S3/13

    CPC分类号： G01H9/008 ,  G01N21/1702 ,  G01N29/2418 ,  G01N2021/1706 ,  G01N2291/0231

    摘要： A pulse detection laser is provided. The pulse detection laser includes a single frequency oscillator, a continuous pre-amplifier, and a pulsed amplifier. The single frequency oscillator generates a seed laser beam and is optically coupled to the continuous preamplifier. The continuous pre-amplifier amplifies the seed laser to produce an intermediate power laser beam. A pulsed amplifier optically coupled to the continuous pre-amplifier receives the intermediate power laser beam and amplifies the intermediate power laser beam to produce a pulse detection laser beam. One task of this pulse detection laser is to illuminate ultrasonic displacements. Light from the laser is scattered, collected, and analyzed with an interferometer to demodulate the ultrasonic displacements caused by the return echoes of the ultrasound at the surface of the part.

    摘要翻译： 提供脉冲检测激光器。 脉冲检测激光器包括单频振荡器，连续前置放大器和脉冲放大器。 单频振荡器产生种子激光束并且光连接到连续前置放大器。 连续的前置放大器放大种子激光器以产生中间功率激光束。 光耦合到连续前置放大器的脉冲放大器接收中间功率激光束并放大中间功率激光束以产生脉冲检测激光束。 该脉冲检测激光器的一个任务是照亮超声波位移。 来自激光的光被散射，收集并用干涉仪分析，以解调超声波在部件表面的返回回波引起的超声位移。

    Method and apparatus for using a two-wave mixing ultrasonic detection in rapid scanning applications
    2.
    发明授权
    Method and apparatus for using a two-wave mixing ultrasonic detection in rapid scanning applications 有权
    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。

    Laser-ultrasound inspection using infrared thermography
    4.
    发明授权
    Laser-ultrasound inspection using infrared thermography 失效
    使用红外热像仪进行激光超声检查

    公开(公告)号：US07605924B2

    公开(公告)日：2009-10-20

    申请号：US11567405

    申请日：2006-12-06

    申请人： Donald Robert Howard ,  Harry Israel Ringermacher ,  Marc Dubois ,  Timothy Gerard Richter ,  Thomas E. Drake

    发明人： Donald Robert Howard ,  Harry Israel Ringermacher ,  Marc Dubois ,  Timothy Gerard Richter ,  Thomas E. Drake

    IPC分类号： G01B11/00

    CPC分类号： G01N29/2418 ,  G01N25/72 ,  G01N29/228 ,  G01N2291/0231 ,  G01N2291/02881

    摘要： An inspection system is provided to examine internal structures of a target material. This inspection system combines an ultrasonic inspection system and a thermographic inspection system. The thermographic inspection system is attached to ultrasonic inspection and modified to enable thermographic inspection of target materials at distances compatible with laser ultrasonic inspection. Quantitative information is obtained using depth infrared (IR) imaging on the target material. The IR imaging and laser-ultrasound results are combined and projected on a 3D projection of complex shape composites. The thermographic results complement the laser-ultrasound results and yield information about the target material's internal structure that is more complete and more reliable, especially when the target materials are thin composite parts.

    摘要翻译： 提供检查系统来检查目标材料的内部结构。 该检测系统结合了超声波检测系统和热成像检测系统。 热成像检测系统连接超声波检查，并进行了修改，以便在与激光超声波检测相匹配的距离内对目标材料进行热成像检测。 使用目标材料上的深度红外（IR）成像获得定量信息。 将IR成像和激光超声结果组合并投影在复杂形状复合材料的3D投影上。 热成像结果补充了激光超声结果，并产生了关于目标材料的内部结构的更完整和更可靠的信息，特别是当目标材料是薄的复合部件时。

    LASER ULTRASONIC MEASUREMENT SYSTEM WITH MOVABLE BEAM DELIVERY
    5.
    发明申请
    LASER ULTRASONIC MEASUREMENT SYSTEM WITH MOVABLE BEAM DELIVERY 审中-公开
    激光超声波测量系统，可移动光束传输

    公开(公告)号：US20130120758A1

    公开(公告)日：2013-05-16

    申请号：US13533565

    申请日：2012-06-26

    申请人： Marc Dubois ,  Thomas E. Drake

    发明人： Marc Dubois ,  Thomas E. Drake

    IPC分类号： G01B9/02

    CPC分类号： G01B9/02049 ,  G01B11/00 ,  G01B11/16 ,  G01B11/161 ,  G01B17/00 ,  G01N29/2418 ,  G01N29/265

    摘要： A laser ultrasonic measurement system includes a first and a second laser source configured to generate a first and a second laser beam, respectively. A movable mechanical link is arranged to transmit the first laser beam. The movable mechanical link is formed by a plurality of rigid sections interconnected by rotating joints. A robot is configured to support and control the movement of at least a section of the mechanical link to transmit the first laser beam to an object. An optical scanner is positioned proximate to the mechanical link. The optical scanner is configured to direct the first and second laser beams onto the object. An interferometer is optically coupled to the optical scanner. The interferometer is configured to receive reflected light from the object and in response generate an electrical signal. The first laser source is kinematically mounted in a housing assembly.

    摘要翻译： 激光超声波测量系统包括被配置为分别产生第一和第二激光束的第一和第二激光源。 可移动机械连杆布置成透射第一激光束。 可移动机械连杆由多个通过旋转接头互连的刚性部分形成。 机器人构造成支撑和控制机械连杆的至少一部分的运动，以将第一激光束传送到物体。 光学扫描器位于机械连杆附近。 光学扫描器被配置为将第一和第二激光束引导到物体上。 干涉仪光学耦合到光学扫描仪。 干涉仪被配置为从物体接收反射光并且响应于产生电信号。 第一激光源被运动地安装在壳体组件中。

    Laser ultrasonic measurement system with movable beam delivery
    6.
    发明授权
    Laser ultrasonic measurement system with movable beam delivery 失效
    激光超声波测量系统具有可移动光束传输

    公开(公告)号：US08243280B2

    公开(公告)日：2012-08-14

    申请号：US12464571

    申请日：2009-05-12

    申请人： Marc Dubois ,  Thomas E. Drake ,  Marvin Klein

    发明人： Marc Dubois ,  Thomas E. Drake ,  Marvin Klein

    IPC分类号： G01B11/02

    CPC分类号： G01B9/02049 ,  G01B11/00 ,  G01B11/16 ,  G01B11/161 ,  G01B17/00 ,  G01N29/2418 ,  G01N29/265

    摘要： A laser ultrasonic measurement system includes a first and a second laser source configured to generate a first and a second laser beam, respectively. A movable mechanical link is arranged to transmit the first laser beam. The movable mechanical link is formed by a plurality of rigid sections interconnected by rotating joints. A robot is configured to support and control the movement of at least a section of the mechanical link to transmit the first laser beam to an object. An optical scanner is positioned proximate to the mechanical link. The optical scanner is configured to direct the first and second laser beams onto the object. An interferometer is optically coupled to the optical scanner. The interferometer is configured to receive reflected light from the object and in response generate an electrical signal. The first laser source is kinematically mounted in a housing assembly.

    摘要翻译： 激光超声波测量系统包括被配置为分别产生第一和第二激光束的第一和第二激光源。 可移动机械连杆布置成透射第一激光束。 可移动机械连杆由多个通过旋转接头互连的刚性部分形成。 机器人构造成支撑和控制机械连杆的至少一部分的运动，以将第一激光束传送到物体。 光学扫描器位于机械连杆附近。 光学扫描器被配置为将第一和第二激光束引导到物体上。 干涉仪光学耦合到光学扫描仪。 干涉仪被配置为从物体接收反射光并且响应于产生电信号。 第一激光源被运动地安装在壳体组件中。

    FIBER LASER FOR ULTRASONIC TESTING
    7.
    发明申请
    FIBER LASER FOR ULTRASONIC TESTING 有权
    用于超声波测试的光纤激光器

    公开(公告)号：US20080016965A1

    公开(公告)日：2008-01-24

    申请号：US11458377

    申请日：2006-07-18

    申请人： Thomas E. Drake ,  Marc Dubois

    发明人： Thomas E. Drake ,  Marc Dubois

    IPC分类号： G01N21/00 ,  G01N29/04

    CPC分类号： G01N29/2418 ,  G01H9/004 ,  G01N29/265 ,  G01N2291/0231

    摘要： Embodiments of the present invention relates to an improved laser for the optical detection of ultrasound. The primary task of this “first” detection laser is to illuminate the spot where a “second” laser is used to generate ultrasound in the part under test. The scattered light from the first laser is collected and analyzed with an interferometer to demodulate the surface vibrations caused by the return echoes of the ultrasound at the surface of the part. The improved detection laser (first laser) is constructed using a diode-pumped fiber laser to produce a high power single-frequency laser source.

    摘要翻译： 本发明的实施例涉及一种用于超声波光学检测的改进的激光器。 该“第一”检测激光器的主要任务是照亮“第二”激光器在被测部件中产生超声的位置。 收集来自第一激光器的散射光并用干涉仪进行分析，以解调由该部件表面的超声波返回回波引起的表面振动。 改进的检测激光器（第一激光器）使用二极管泵浦的光纤激光器来构造，以产生高功率单频激光源。

    LASER-ULTRASOUND INSPECTION USING INFRARED THERMOGRAPHY
    8.
    发明申请
    LASER-ULTRASOUND INSPECTION USING INFRARED THERMOGRAPHY 失效
    使用红外热像仪进行激光超声波检测

    公开(公告)号：US20080137105A1

    公开(公告)日：2008-06-12

    申请号：US11567405

    申请日：2006-12-06

    申请人： Donald Robert Howard ,  Harry Israel Ringermacher ,  Marc Dubois ,  Timothy Gerard Richter ,  Thomas E. Drake

    发明人： Donald Robert Howard ,  Harry Israel Ringermacher ,  Marc Dubois ,  Timothy Gerard Richter ,  Thomas E. Drake

    IPC分类号： G01B11/28

    CPC分类号： G01N29/2418 ,  G01N25/72 ,  G01N29/228 ,  G01N2291/0231 ,  G01N2291/02881

    摘要： An inspection system is provided to examine internal structures of a target material. This inspection system combines an ultrasonic inspection system and a thermographic inspection system. The thermographic inspection system is attached to ultrasonic inspection and modified to enable thermographic inspection of target materials at distances compatible with laser ultrasonic inspection. Quantitative information is obtained using depth infrared (IR) imaging on the target material. The IR imaging and laser-ultrasound results are combined and projected on a 3D projection of complex shape composites. The thermographic results complement the laser-ultrasound results and yield information about the target material's internal structure that is more complete and more reliable, especially when the target materials are thin composite parts.

    摘要翻译： 提供检查系统来检查目标材料的内部结构。 该检测系统结合了超声波检测系统和热成像检测系统。 热成像检测系统连接超声波检查，并进行了修改，以便在与激光超声波检测相匹配的距离内对目标材料进行热成像检测。 使用目标材料上的深度红外（IR）成像获得定量信息。 将IR成像和激光超声结果组合并投影在复合形状复合材料的3 D投影上。 热成像结果补充了激光超声结果，并产生了关于目标材料的内部结构的更完整和更可靠的信息，特别是当目标材料是薄的复合部件时。