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1.发明授权公开(公告)号：US10648949B2
公开(公告)日：2020-05-12
申请号：US16455433
申请日：2019-06-27
发明人： Kazuo Watabe , Hidefumi Takamine , Tomoki Shiotani
摘要： According to an embodiment, a structure evaluation system includes a plurality of sensors, a position locator, a velocity calculator, and an evaluator. The sensors detect an elastic wave generated from a structure. The position locator derives a wave source distribution of the elastic waves generated from the structure, on the basis of the elastic waves. The velocity calculator derives a propagation velocity of the elastic wave generated from the structure, on the basis of the elastic waves. The evaluator evaluates the soundness of the structure on the basis of the wave source distribution and the propagation velocity of the elastic waves.
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公开(公告)号：US10365250B2
公开(公告)日：2019-07-30
申请号：US15264206
申请日：2016-09-13
摘要： According to an embodiment, a detection device is used for a structure. The structure includes: a first member; a second member provided on an opposite side of the first member; and a welded portion that is provided along an end of the second member facing the first member and fixes the first member and the second member. The detection device include: a plurality of acoustic emission sensors that are disposed so as to be spaced apart from each other in a direction in which the welded portion extends and are configured to detect an elastic wave transmitted to the second member, each acoustic emission sensor being attached to the second member; and an outputter that outputs information, obtained from outputs of the plurality of the acoustic emission sensors.
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3.发明授权公开(公告)号：US12104986B2
公开(公告)日：2024-10-01
申请号：US17653291
申请日：2022-03-03
发明人： Takashi Usui , Hidefumi Takamine , Yuki Ueda , Keisuke Ueno , Yousuke Hisakuni , Kazuo Watabe
IPC分类号： G01M7/08
CPC分类号： G01M7/08
摘要： According to one embodiment, a structure evaluation system includes at least three or more sensors, a position locator, and an evaluator. The three or more sensors are arranged on surfaces different from a surface to which an impact is applied with respect to a structure at different intervals in a first direction of the structure and a second direction orthogonal to the first direction and detects elastic waves generated from the structure. The position locator locates a position of a source in which the elastic waves are generated on the basis of the elastic waves detected by each of the three or more sensors. The evaluator evaluates a deterioration state of the structure on the basis of information based on a position location process of the position locator and information indicating a position where the impact is applied.
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公开(公告)号：US11639880B2
公开(公告)日：2023-05-02
申请号：US17500335
申请日：2021-10-13
摘要： According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator.
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公开(公告)号：US11181439B2
公开(公告)日：2021-11-23
申请号：US16551857
申请日：2019-08-27
摘要： According to one embodiment, a structure evaluation system according to an embodiment includes a plurality of sensors, a position locator, and an evaluator. The plurality of sensors detect elastic waves. The position locator locates positions of elastic wave sources by using the elastic waves among the plurality of elastic waves respectively detected by the plurality of sensors having an amplitude exceeding a threshold value determined according to positions of the sources of the plurality of elastic waves and the positions of the plurality of disposed sensors. The evaluator evaluates a deteriorated state of the structure on the basis of results of the position locating of the elastic wave sources which is performed by the position locator.
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公开(公告)号：US09459090B2
公开(公告)日：2016-10-04
申请号：US14789241
申请日：2015-07-01
CPC分类号： G01B9/02091 , G01B9/02028 , G02B13/22 , G02B17/023 , G02B26/0816
摘要： According to one embodiment, an optical delay apparatus includes the following elements. The first retroreflector includes a first and a second reflection surface. The second retroreflector includes a third and a fourth reflection surface opposite to the first reflection surface. The third retroreflector includes a fifth and a sixth reflection surface opposite to the second reflection surface. The first driving mechanism moves the first retroreflector and a set of the second retroreflector and the third retroreflector relative to each other. The second retroreflector and the third retroreflector are misaligned with each other in a direction along a first line of intersection between the first reflection surface and the second reflection surface.
摘要翻译： 根据一个实施例，光延迟装置包括以下元件。 第一后向反射器包括第一和第二反射表面。 第二后向反射器包括与第一反射面相反的第三反射面和第四反射面。 第三后向反射器包括与第二反射面相反的第五和第六反射面。 第一驱动机构相对于彼此移动第一后向反射器和一组第二后向反射器和第三后向反射器。 第二回射器和第三后向反射器在沿着第一反射面和第二反射面之间的第一交叉线的方向上彼此不对准。
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7.发明授权公开(公告)号：US10794990B2
公开(公告)日：2020-10-06
申请号：US15454316
申请日：2017-03-09
发明人： Hidefumi Takamine , Kazuo Watabe , Tomoki Shiotani
摘要： A structure evaluation apparatus has an acquisitor and an evaluator. The acquisitor acquires a distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material other than concrete. The evaluator calculates similarity, with reference to a reference region including the material in the distribution, of other regions including the material than the reference region in the distribution.
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8.发明授权公开(公告)号：US10345275B2
公开(公告)日：2019-07-09
申请号：US15455646
申请日：2017-03-10
发明人： Hidefumi Takamine , Kazuo Watabe , Tomoki Shiotani
摘要： According to an embodiment, a structure evaluation system includes a plurality of sensors, a position locator, and an evaluator. The sensors detect an elastic wave generated from a structure. The position locator derives a source distribution of the elastic waves generated from the structure, caused by an impact on the structure. The evaluator evaluates a state of deterioration of the structure from characteristic parameters of the elastic waves in the source distribution.
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9.发明授权公开(公告)号：US10330646B2
公开(公告)日：2019-06-25
申请号：US15454101
申请日：2017-03-09
发明人： Kazuo Watabe , Hidefumi Takamine , Tomoki Shiotani
摘要： According to an embodiment, a structure evaluation system includes a plurality of AE sensors, a signal processor, a position locator, a velocity calculator, and an evaluator. The AE sensors detect an elastic wave generated from a structure. The signal processor extracts an AE signal including information on the elastic wave by performing signal processing on the elastic wave detected by the AE sensor. The position locator derives a wave source distribution indicating a distribution of sources of the elastic waves generated in the structure on the basis of the AE signals. The velocity calculator derives a propagation velocity of the elastic wave generated in the structure on the basis of the AE signal. The evaluator evaluates the soundness of the structure on the basis of the wave source distributions and the propagation velocity of the elastic waves.
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10.发明授权公开(公告)号：US10234430B2
公开(公告)日：2019-03-19
申请号：US15255758
申请日：2016-09-02
发明人： Hidefumi Takamine
摘要： According to an embodiment, a detection system includes a detection device, an acoustic emission sensor, and a processing unit. The detection device detects a change that occurs in a structure or a change in an environment related to the structure. The acoustic emission sensor detects an acoustic emission wave produced from the structure. The processing unit performs first signal processing to process an acoustic emission signal indicating the acoustic emission wave, which is input from the acoustic emission sensor until a first period of time elapses after a detection signal is input from the detection device. The detection signal indicates that a change has occurred in the structure or the environment related to the structure.
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