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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：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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4.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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5.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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6.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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公开(公告)号：US10883919B2
公开(公告)日：2021-01-05
申请号：US15918549
申请日：2018-03-12
摘要： According to one embodiment, a structure evaluation system includes an impact imparting unit, a sensor, and a structure evaluation device. The impact imparting unit applies impacts to a structure. The impact imparting unit applies the impacts at a frequency equal to or less than a frequency determined in accordance with an intensity at which the impacts are imparted. The sensor detects elastic waves. The structure evaluation device evaluates a deterioration state of the structure on the basis of the detected elastic waves.
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公开(公告)号：US20190383696A1
公开(公告)日：2019-12-19
申请号：US16551857
申请日：2019-08-27
IPC分类号： G01M5/00
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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9.发明授权公开(公告)号：US10371666B2
公开(公告)日：2019-08-06
申请号：US15456075
申请日：2017-03-10
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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