{"created":"2023-05-15T12:05:02.269849+00:00","id":9648,"links":{},"metadata":{"_buckets":{"deposit":"521171df-75e5-4fe8-a17a-efe81218bc03"},"_deposit":{"created_by":3,"id":"9648","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"9648"},"status":"published"},"_oai":{"id":"oai:iwate-u.repo.nii.ac.jp:00009648","sets":["1515:1516"]},"author_link":["73946","73945"],"item_28_alternative_title_23":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Monitoring of rolling wear using the alternating current potential drop method"}]},"item_28_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001-03-01","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{}]}]},"item_28_date_6":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2011-11-07"}]},"item_28_description_11":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"科学研究費補助金[基盤研究C](課題番号11650144)研究成果報告書","subitem_description_type":"Abstract"}]},"item_28_description_12":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"交流電流パワーアンプおよび周波数発振器,微小電圧増幅器,超高速ADコンバータ,解析用パソコンからなる高精度交流電位差評価システムを試作した.試作した交流電流パワーアンプは出力3A以上,周波数500kHz以上の性能を持つことが確認された.しかし,微小電圧増幅器の性能が十分ではなく,計測可能な周波数は300kHzまでであった.パソコンに取込まれた印加電流と交流電位差の波形を解析し,精度良く位相差を検出するプログラムをカルマンフィルタのアルゴリズムを用いて作成した.位相差により誘導起電力を補償するプログラムを作成した.\n\n表面損傷の評価試験として,S45C,SUJ2を用い,放電ワイヤーカット加工による微小スリットを表面損傷モデルとした.スリットの深さ(き裂深さに対応)と測定された交流電位差の増加量の関係を調べ,交流電位差の増加とき裂深さには,ほぼ比例関係があることが分かった.また,このとき印加電流の周波数,電流を変化させ,その影響を調べた.その結果,印加電流に比例して,交流電位差が増加し,周波数の増加とともに交流電位差も増加した.測定された電流の変化と,交流電位差の変化を補償プログラムに適用することにより,誘導起電力が約10%の精度で補償され,その有効性が確認された.\n\n往復動の転がり摩耗試験を行い,そのときの交流電位の変化および印加電流と交流電位差の位相差を検出し,誘導起電力の補償を行った.その結果,摩耗の進行の初期では,交流電位差がわずかに減少し,その後徐々に増加する傾向が見られた.これは,摩耗の初期では,材料特性が変化したため交流電位差が減少し,その後,摩耗量の増加とともに電流経路が増加し,その結果,交流電位差の増加に反映されたと思われる.","subitem_description_type":"Other"},{"subitem_description":"A surface damage evaluation system was developed. The alternating current potential drop (ACPD) method was used in this system. This system consists of a personal computer, a frequency generator, a power current amplifier, two DC amplifiers and two high speed A/D converters and has a compensating technique for inductive pick-up of AC voltage. The inductive pick-up is the most important cause of measurement error at ACPD method. Middle carbon steel and bearing steel were used for rolling wear specimens, and reciprocating rolling wear tests were carried out. Signals of ACPD from surface which damaged with rolling wear and applied alternating current were measured. These signals were analyzed by computer program and the phase difference between these signals was detected. Then the inductive pick-up was compensated.\n\nThe conclusions which were obtained in this research are summarized in the following.\n\n(1) Using the compensation technique, the true value of ACPD could be estimated successfully.\n\n(2) Reciprocating rolling wear proceeds with producing small flaky wear particles.\n\n(3) From the change in estimated ACPD values against the number of cycles, it can be seen to the tendency of decreasing before about 10^5 cycles and increasing after about 10^5 cycles. The reason seems to change in the electrical properties of materials and current path caused from wear of lower specimens.","subitem_description_type":"Other"}]},"item_28_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{}],"names":[{"name":"SHIMIZU, Tomoharu"}]}]},"item_28_text_4":{"attribute_name":"著者(機関)","attribute_value_mlt":[{"subitem_text_value":"岩手大学工学部"}]},"item_28_version_type_27":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"清水, 友治"}],"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":"kaken11650144.pdf","filesize":[{"value":"3.4 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"kaken11650144.pdf","url":"https://iwate-u.repo.nii.ac.jp/record/9648/files/kaken11650144.pdf"},"version_id":"c9c0429e-b876-4176-bea1-4783590eeedb"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"High accuracy","subitem_subject_scheme":"Other"},{"subitem_subject":"Kalman filter","subitem_subject_scheme":"Other"},{"subitem_subject":"Maintenancetribology","subitem_subject_scheme":"Other"},{"subitem_subject":"Monitoring","subitem_subject_scheme":"Other"},{"subitem_subject":"Potential drop method","subitem_subject_scheme":"Other"},{"subitem_subject":"Rolling wear","subitem_subject_scheme":"Other"},{"subitem_subject":"もろがり摩耗","subitem_subject_scheme":"Other"},{"subitem_subject":"カルマンフィルタ","subitem_subject_scheme":"Other"},{"subitem_subject":"メンテナンストライボロジー","subitem_subject_scheme":"Other"},{"subitem_subject":"モニタリング","subitem_subject_scheme":"Other"},{"subitem_subject":"固定ラグスムーザ","subitem_subject_scheme":"Other"},{"subitem_subject":"転がり摩耗","subitem_subject_scheme":"Other"},{"subitem_subject":"電位差法","subitem_subject_scheme":"Other"},{"subitem_subject":"高精度","subitem_subject_scheme":"Other"},{"subitem_subject":"高精度化","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"交流電位差法による転がり摩耗のモニタリング","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"交流電位差法による転がり摩耗のモニタリング"}]},"item_type_id":"28","owner":"3","path":["1516"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-11-07"},"publish_date":"2011-11-07","publish_status":"0","recid":"9648","relation_version_is_last":true,"title":["交流電位差法による転がり摩耗のモニタリング"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-16T11:01:10.074817+00:00"}