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STRUCTURE EVALUATION SYSTEM, STRUCTURE EVALUATION DEVICE, AND STRUCTURE EVALUATION METHOD

外国特許コード F180009618
整理番号 5465
掲載日 2018年11月20日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2017JP008824
国際公開番号 WO 2017217033
国際出願日 平成29年3月6日(2017.3.6)
国際公開日 平成29年12月21日(2017.12.21)
優先権データ
  • 特願2016-119306 (2016.6.15) JP
発明の名称 (英語) STRUCTURE EVALUATION SYSTEM, STRUCTURE EVALUATION DEVICE, AND STRUCTURE EVALUATION METHOD
発明の概要(英語) A structure evaluation system according to an embodiment of the present invention has a plurality of sensors, a position locating unit, and an evaluation unit. The sensors detect elastic waves generated by a structure. The position locating unit derives a source distribution of the elastic waves generated by an impact on the structure. The evaluation unit evaluates the state of deterioration of the structure from feature values of the elastic waves in the source distribution.
従来技術、競合技術の概要(英語) BACKGROUND ART
Such as a concrete version of the bridge when the traffic load is applied, and the development of cracks in the floor plate by friction AE(Acoustic Emission) is generated. AE sensor is provided on the surface of the floor plate to, the AE can be detected. AE is, material fatigue propagation of cracks occurring due to an elastic wave. In addition, a plurality of AE sensors may be installed from the difference between the arrival time of the AE sensor in between, the source of the acoustic wave (hereinafter, 'AE source' is called.) Can be the position of the location. In general, in a concrete version of the bridge, such as cracking or damage of the inside of the floor plate in the horizontal direction, in the conventional nondestructive inspection is very difficult to detect, the analysis of data acquired by the AE sensor internal damage can be estimated. However, the AE sensor is provided on the bridge or the like, in order to obtain sufficient data to estimate the damage of the long time is required. Therefore, the evaluation of the internal concrete may not be performed efficiently. In addition, such a problem, a concrete floor of the bridge plate is not limited to the generation of a crack or the progress of the elastic wave is generated with a structure that is common to all the problems.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOSHIBA CORPORATION
  • KYOTO UNIVERSITY
  • 発明者(英語)
  • TAKAMINE Hidefumi
  • WATABE Kazuo
  • SHIOTANI Tomoki
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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