{"created":"2023-05-15T12:05:34.717502+00:00","id":10264,"links":{},"metadata":{"_buckets":{"deposit":"9b20be99-1a9d-443e-a7c5-302790b3f6bf"},"_deposit":{"created_by":3,"id":"10264","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"10264"},"status":"published"},"_oai":{"id":"oai:iwate-u.repo.nii.ac.jp:00010264","sets":["1515:1519"]},"author_link":["63568","63566","63567","63569"],"item_16_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2007-01-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"5","bibliographicPageEnd":"318","bibliographicPageStart":"310","bibliographicVolumeNumber":"28","bibliographic_titles":[{"bibliographic_title":"Acoustical Science and Technology"}]}]},"item_16_date_6":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2013-02-26"}]},"item_16_description_12":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"In this paper, we describe a method for estimating a crack position in a concrete structure using several accelerometers. An array of accelerometers is attached to the concrete structure and an impact is made on the concrete surface using a small impulse hammer. A reflection wave is generated from the crack position if a crack exists. Conventional methods for estimating the reflection point might seem to be useful for the detection of cracks. Because the concrete structure is elastic, however, it has three wave-propagation modes: the surface-wave mode, the primary-wave mode, and the secondary-wave mode. We cannot estimate the position using conventional methods because the necessary primary-wave mode is weaker than the surface-wave mode. To estimate the crack position precisely, we have already proposed two methods for eliminating the surface-wave and side-wall reflections. However, elimination using those methods was insufficient because they sometimes indicated a peak at a position where no crack existed. Therefore, in this paper, we propose a new method for estimating the surface wave more precisely to suppress such peaks. Some experiments were carried out, yielding better results.","subitem_description_type":"Other"}]},"item_16_publisher_14":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"The Acoustical Society of Japan"}]},"item_16_relation_26":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1250/ast.28.310","subitem_relation_type_select":"DOI"}}]},"item_16_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1346-3969","subitem_source_identifier_type":"ISSN"}]},"item_16_text_4":{"attribute_name":"著者(機関)","attribute_value_mlt":[{"subitem_text_value":"Faculty of Engineering, Iwate University"}]},"item_16_version_type_27":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Murakami, Takeshi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Fujioka, Toyota"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nagata, Yoshifumi"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Abe, Masato"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-11-14"}],"displaytype":"detail","filename":"ast-v28n5p310-318.pdf","filesize":[{"value":"748.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ast-v28n5p310-318.pdf","url":"https://iwate-u.repo.nii.ac.jp/record/10264/files/ast-v28n5p310-318.pdf"},"version_id":"5c8ab4d6-d431-4c62-8baa-e391f2b054e6"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Nondestructive measurement","subitem_subject_scheme":"Other"},{"subitem_subject":"Elastic wave","subitem_subject_scheme":"Other"},{"subitem_subject":"Multiple sensors","subitem_subject_scheme":"Other"},{"subitem_subject":"Beamforming","subitem_subject_scheme":"Other"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Nondestructive technique for estimating crack positions in a concrete structure by subtraction of the surface-wave component","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Nondestructive technique for estimating crack positions in a concrete structure by subtraction of the surface-wave component"}]},"item_type_id":"16","owner":"3","path":["1519"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-02-26"},"publish_date":"2013-02-26","publish_status":"0","recid":"10264","relation_version_is_last":true,"title":["Nondestructive technique for estimating crack positions in a concrete structure by subtraction of the surface-wave component"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-16T11:40:03.820034+00:00"}