公开(公告)号：US06668651B2

公开(公告)日：2003-12-30

申请号：US09926752

申请日：2001-12-12

申请人： Pierre Jean Emile Beausseroy ,  Jean-louis Eyraud ,  Régis Léo Marie Jean Lengelle

发明人： Pierre Jean Emile Beausseroy ,  Jean-louis Eyraud ,  Régis Léo Marie Jean Lengelle

IPC分类号： G01N2906

CPC分类号： G01H1/006 ,  F01D21/003 ,  F05D2260/83 ,  F05D2270/334

摘要： Stationary sensors are used to measure periodically the vibratory motions of portions of a body spinning in front of them, such as blades, and to try to determine their natural frequencies by spectral analyses. The sensors are collected together in several networks of different numbers and the determination includes a comparison of the spectra of the different networks via different operations of selection and rejection of lines. The process appreciably pushes back the limit of unambiguous frequency detection.

摘要翻译： 固定传感器用于周期性地测量在其前面旋转的身体部分（例如叶片）的振动运动，并尝试通过光谱分析确定其固有频率。 传感器在不同数量的几个网络中收集在一起，并且确定包括通过线路的选择和拒绝的不同操作来对不同网络的频谱进行比较。 该过程明显地推回了明确的频率检测的极限。

公开(公告)号：US06629464B2

公开(公告)日：2003-10-07

申请号：US09969744

申请日：2001-10-03

申请人： Ui Won Suh ,  James Douglas Risbeck

发明人： Ui Won Suh ,  James Douglas Risbeck

IPC分类号： G01N2906

CPC分类号： G01N29/4445 ,  B23K26/032 ,  B23K26/356 ,  B23K2101/001 ,  C21D10/005 ,  G01N29/11 ,  G01N29/2418 ,  G01N2291/0423 ,  G01N2291/0426

摘要： A method for quality control monitoring of laser shock peening a surface of a production workpiece during which laser beam pulses form a plurality of corresponding plasmas. An acoustic signal of each laser beam pulse during a period of time during a duration of each corresponding one of the plasmas is monitored and an acoustic energy parameter value for each of the acoustic signals for each of the corresponding laser pulses is calculated. A statistical function value of the workpiece based on the acoustic energy parameter values is calculated and compared to a pass or fail criteria for accepting or rejecting the workpiece. The criteria may be based on a pre-determined correlation of test piece statistical function data such as high cycle fatigue failure data of test pieces. The statistical function value may be an average of the acoustic energy parameter values of the laser beam pulses.

摘要翻译： 一种用于对激光脉冲形成多个相应等离子体的激光冲击硬化生产工件的表面的质量控制监测的方法。 监测每个对等的一个等离子体的持续时间期间的一段时间内的每个激光束脉冲的声学信号，并且计算每个对应的激光脉冲的每个声学信号的声能参数值。 计算基于声能参数值的工件的统计功能值，并将其与接受或拒绝工件的通过或失败标准进行比较。 标准可以基于测试片统计功能数据的预定相关性，例如测试片的高循环疲劳失效数据。 统计函数值可以是激光束脉冲的声能参数值的平均值。

公开(公告)号：US06474163B1

公开(公告)日：2002-11-05

申请号：US09647554

申请日：2000-11-01

申请人： Hajime Takada ,  Akira Torao ,  Ikuo Yarita

发明人： Hajime Takada ,  Akira Torao ,  Ikuo Yarita

IPC分类号： G01N2906

CPC分类号： G01N29/4454 ,  G01N29/07 ,  G01N29/2456 ,  G01N29/343 ,  G01N29/40 ,  G01N2291/011 ,  G01N2291/0237 ,  G01N2291/02854 ,  G01N2291/0427 ,  G01N2291/044 ,  G01N2291/048 ,  G01N2291/106

摘要： A method and apparatus for ultrasonic flaw detection of line focus type suitable for detection of flaws in nonmetallic materials included in an object. Ultrasonic transmitter and receiver elements of line focus type are opposed at a distance (L) with an object under test placed between them, and a maximum ultrasonic echo is obtained at a distance Lp expressed by: Lp=0.75(FT+FR)−{(CS/CW)−1}t where FT (mm) is the focal length in the medium of the ultrasonic transmitter element of line focus type, FR (mm) is the focal length in the medium of the ultrasonic receiver element line focus type, CS (m/sec) is the speed of ultrasound in an object under test, CW (m/sec) is the speed of ultrasound in the medium, and t (mm) is the thickness of the object under test.

摘要翻译： 一种用于超声波探伤的方法和装置，适用于检测物体中包含的非金属材料中的缺陷。 线对焦型的超声波发射器和接收器元件在被测对象放置在距离（L）的位置上相对，并且以距离Lp获得最大超声波回波，Lp = 0.75（FT + FR） - { （CS / CW）-1} t其中FT（mm）是线聚焦型超声波发射元件的介质中的焦距，FR（mm）是超声波接收器元件线对焦类型的介质中的焦距 CS（m / sec）是被测物体中的超声速度，CW（m / sec）是介质中的超声速度，t（mm）是待测物体的厚度。

公开(公告)号：US06755083B2

公开(公告)日：2004-06-29

申请号：US10131391

申请日：2002-04-22

申请人： James G. Berryman

发明人： James G. Berryman

IPC分类号： G01N2906

CPC分类号： G01S7/527 ,  G01N29/341 ,  G01N29/40 ,  G01N29/50 ,  G01N2291/106

摘要： A method for distinguishing multiple targets using time-reversal acoustics. Time-reversal acoustics uses an iterative process to determine the optimum signal for locating a strongly reflecting target in a cluttered environment. An acoustic array sends a signal into a medium, and then receives the returned/reflected signal. This returned/reflected signal is then time-reversed and sent back into the medium again, and again, until the signal being sent and received is no longer changing. At that point, the array has isolated the largest eigenvalue/eigenvector combination and has effectively determined the location of a single target in the medium (the one that is most strongly reflecting). After the largest eigenvalue/eigenvector combination has been determined, to determine the location of other targets, instead of sending back the same signals, the method sends back these time reversed signals, but half of them will also be reversed in sign. There are various possibilities for choosing which half to do sign reversal. The most obvious choice is to reverse every other one in a linear array, or as in a checkerboard pattern in 2D. Then, a new send/receive, send-time reversed/receive iteration can proceed. Often, the first iteration in this sequence will be close to the desired signal from a second target. In some cases, orthogonalization procedures must be implemented to assure the returned signals are in fact orthogonal to the first eigenvector found.

摘要翻译： 使用时间反转声学来区分多个目标的方法。 时间反射声学使用迭代过程来确定在混乱环境中定位强反射目标的最佳信号。 声阵将信号发送到介质中，然后接收返回/反射的信号。 然后，该返回/反射信号被时间反转并再次发送回介质，并且再次发送和接收的信号不再改变。 在这一点上，阵列已经隔离了最大的特征值/特征向量组合，并有效地确定了介质中单个目标的位置（最强反射的）。 在确定了最大特征值/特征向量组合之后，为了确定其他目标的位置，该方法不是发送相同的信号，而是发回这些时间反转的信号，但是其中一半也将被反转。 有多种可能性可以选择哪一半做符号逆转。 最明显的选择是将线性阵列中的每一个相反，或者像2D中的棋盘图案。 然后，可以继续新的发送/接收，发送时间反转/接收迭代。 通常，该序列中的第一次迭代将接近来自第二个目标的期望信号。 在某些情况下，必须执行正交化程序以确保返回的信号实际上与所找到的第一特征向量正交。

公开(公告)号：US06443012B1

公开(公告)日：2002-09-03

申请号：US09283279

申请日：1999-04-01

申请人： Geoffrey Beardmore

发明人： Geoffrey Beardmore

IPC分类号： G01N2906

摘要： An aircraft has several ultrasonic phased arrays acoustically bonded to parts of its structure to be monitored. The arrays are energized to produce an ultrasonic beam that scans the structure in two planes. A monitor receives the output from the arrays produced by reflection of energy from discontinuities within the structure. When there is a change in these outputs, the monitor signals a pilot display unit and a flight control system such that the aircraft flight envelope can be restricted to minimize damage.

公开(公告)号：US06393917B1

公开(公告)日：2002-05-28

申请号：US09638984

申请日：2000-08-15

申请人： Dong-Man Suh

发明人： Dong-Man Suh

IPC分类号： G01N2906

CPC分类号： G01N29/36 ,  G01N29/06 ,  G01N29/52 ,  G01N2291/011 ,  G01N2291/0428 ,  G01N2291/044

摘要： A system and method for image reconstruction of defects in solid materials based on mode-converted Rayleigh waves (MCRW). The system and method isolate the Rayleigh wave signals from the specular reflection signals although the Rayleigh wave signal amplitude is much weaker than the specular signal. It was shown that an image of defects within a solid material could be successfully restored by MCRW image method. This system and method also provide an accurate representation of the defect shape.

摘要翻译： 基于模式转换瑞利波（MCRW）的固体材料缺陷图像重建系统和方法。 该系统和方法将瑞利波信号与镜面反射信号隔离，尽管瑞利波信号幅度比镜面反射信号弱得多。 已经表明，通过MCRW图像方法可以成功地恢复固体材料中的缺陷图像。 该系统和方法还提供了缺陷形状的精确表示。

公开(公告)号：US06324911B1

公开(公告)日：2001-12-04

申请号：US09600189

申请日：2000-11-02

申请人： Michael Frederick Scarffe

发明人： Michael Frederick Scarffe

IPC分类号： G01N2906

CPC分类号： B67D1/0057 ,  B67D1/0859 ,  F25D21/02 ,  G01F23/2962 ,  G01N2291/02836

摘要： Apparatus for detecting an interface (13) between two media of a heterogeneous system, comprising transmission means (21) to send a signal through one medium from the transmission means (21) to the interface (13), measuring means (32b, 32c, 32d) to measure the time taken for the signal to be reflected to a reception means (36), and processing means (40c, 40d) to use said time to determine the distance of the interface from the transmission means.

摘要翻译： 用于检测异构系统的两个介质之间的接口（13）的装置，包括通过一个介质从所述传输装置（21）向所述接口（13）发送信号的传输装置（21），测量装置（32b，32c， 32d）测量信号被反射到接收装置（36）所用的时间，以及处理装置（40c，40d），以使用所述时间来确定接口与传输装置的距离。

公开(公告)号：US06672162B2

公开(公告)日：2004-01-06

申请号：US10395270

申请日：2003-03-25

申请人： Masayuki Hirose

发明人： Masayuki Hirose

IPC分类号： G01N2906

CPC分类号： G01N29/4472 ,  G01B17/00 ,  G01B17/02 ,  G01N29/348 ,  G01N29/46 ,  G01N2291/0231 ,  G01N2291/0232 ,  G01N2291/02458 ,  G01N2291/0258 ,  G01N2291/02854 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/0428 ,  G01N2291/102 ,  G01N2291/2632 ,  G01N2291/2636 ,  G01V1/00

摘要： While a transmitting transducer (2a) for transmitting an ultrasonic wave and a receiving transducer (2b) for receiving an ultrasonic wave are moved within a predetermined circular region (7) on a surface of a material being measured, ultrasonic waves are transmitted and received 10,000 times. Then, arithmetic averaging is performed every time an ultrasonic wave is received, on the ultrasonic wave and ultrasonic waves that have been received until then. For example, the aforementioned predetermined frequency is given by ((n±(½))×(106×v/&Dgr;L))(Hz), where &Dgr;L is a variation in distance between the transmitting transducer and the receiving transducer, v is a transmission velocity of an ultrasonic wave transmitting in a material being detected, and n is a natural number. Consequently, it is possible to detect, with high accuracy, the thickness of a concrete material having a narrow width and a thick thickness, the thickness of the covering of a reinforcing bar and the diameter thereof, the depth of a crack and the like.

摘要翻译： 虽然用于发送超声波的发送换能器（2a）和用于接收超声波的接收换能器（2b）在被测量材料的表面上的预定圆形区域（7）内移动，但是超声波被发送和接收10,000 次 然后，每次接收超声波时，对超声波和直到那时已经接收的超声波进行算术平均化。 例如，上述预定频率由（（n±（1/2））×（10×v / DeltaL））（Hz）给出，其中DeltaL是发射换能器和接收换能器之间的距离变化，v 是在被检测材料中发送的超声波的传播速度，n是自然数。 因此，可以高精度地检测具有窄宽度和厚度的混凝土材料的厚度，钢筋的覆盖物的厚度及其直径，裂纹的深度等。

公开(公告)号：US06622560B2

公开(公告)日：2003-09-23

申请号：US09882751

申请日：2001-06-15

申请人： Tai Kyong Song ,  Yang Mo Yoo

发明人： Tai Kyong Song ,  Yang Mo Yoo

IPC分类号： G01N2906

CPC分类号： G01S15/8954

摘要： An ultrasound imaging method forms an image of an object using signals reflected from the object after transmitting an ultrasound pulse to the object. In the method, at a first step, a predetermined first spread spectrum signal is converted to the ultrasound signal at one or more transducers and the ultrasound signal is transmitted to the object. At a second step, pulse compression is performed on a reflected signal of the ultrasound signal reflected from the object to form a pulse compressed signal. And the pulse compressed signal is processed to produce a receive-focused signal and the image of the object from the receive-focused signal is generated.

公开(公告)号：US06571633B1

公开(公告)日：2003-06-03

申请号：US09766085

申请日：2001-01-19

申请人： Thomas E. Drake, Jr.

发明人： Thomas E. Drake, Jr.

IPC分类号： G01N2906

CPC分类号： G01N29/2418 ,  G01N29/221 ,  G01N29/223 ,  G01N2291/0231 ,  G01N2291/045

摘要： A system and method for delivering a laser beam from a remote laser source through a gantry positioning system for performing ultrasonic testing on a test object. The invention provides for closed-loop error correction of a laser beam delivered through the gantry members of a gantry positioning system (GPS) to ensure unobstructed transmission of the laser beam as the GPS changes operates and changes shape. The invention provides for ultrasonic testing of a test object for identifying material defects by moving the end gantry member of the GPS thereby permitting data acquisition of the test object from various fields of view. The invention also provides for controlling the divergence of the laser beam used for ultrasonic testing.

摘要翻译： 一种用于从远程激光源通过用于在测试对象上进行超声波测试的台架定位系统传送激光束的系统和方法。 本发明提供了通过台架定位系统（GPS）的台架构件输送的激光束的闭环误差校正，以确保当GPS变化操作并改变形状时激光束的不受阻碍的传输。 本发明通过移动GPS的末端支架构件来提供用于识别材料缺陷的测试对象的超声波测试，从而允许从各种视野获取测试对象的数据。 本发明还提供用于控制用于超声波测试的激光束的发散度。