{"_buckets": {"deposit": "197ee488-c8c8-445c-853d-b40bd0da0766"}, "_deposit": {"id": "3698", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "3698"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00003698", "sets": ["454", "425"]}, "item_5_alternative_title_1": {"attribute_name": "その他のタイトル", "attribute_value_mlt": [{"subitem_alternative_title": "The Measuring Method about Young\u0027s Modulus of Plastics Using the Indenting Hardness Test by a Spherical Indenter"}]}, "item_5_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1987-11", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "495", "bibliographicPageEnd": "2202", "bibliographicPageStart": "2193", "bibliographicVolumeNumber": "53", "bibliographic_titles": [{"bibliographic_title": "日本機械学会論文集. A編"}, {"bibliographic_title": "日本機械学会論文集. A編", "bibliographic_titleLang": "en"}]}]}, "item_5_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "This study aims at investigating the performance of a hardness testing machine. First, the phenomenon of a contact between a rigid sperical indenter and a plastic material is considered. By using Hertz\u0027s elastic contact law, the Young\u0027s modulus of plastics Es can be calculated from Eq. (1) using the cordal diameter of an indentation d, the elastic recovery of an indentation δ_r and the indenting load L : E_s = 0.9(3/2) L/(d δ_r)…(1) From the geometrical relation at the contact part, the contacting diameter d_c and the surface level diameter d_l are derived as follows. (δ_t : the total depth) : d_c = 2[D(δ_t-δ_r/2){1-(δ_t-δ_r/2)/D}]^\u003c1/2\u003e…(2), d_l = 2[Dδ_t×(1-δ_t/D)}^\u003c1/2\u003e…(3) Furthermore, the mean strain rate under the elastic recovery by a spherical indenter is related to the strain rate under the uniaxial stress field. Finally, the indenting experiments are carried out, δ_r and δ_t are measured so that a cordal diameter d is formulated as follows : d = d_l{1.71-0.707(d_l/d_c)}…(4) When the Young\u0027s moduli calculated from δ_t and δ_r using Eqs. (1)-(4) are compared to the Young\u0027s moduli measured from a compression test, their Young\u0027s values consist within an accuracy of about ±5-10%. Therefore, the measuring method about Young\u0027s modulus of plastics using the indenting hardness test by a spherical indenter can be applied to the present hardness testing machines.", "subitem_description_type": "Abstract"}]}, "item_5_full_name_3": {"attribute_name": "著者別名", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "44761", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Ishibashi, Tatsuya"}]}, {"nameIdentifiers": [{"nameIdentifier": "44762", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Shimoda, Shigeru"}]}, {"nameIdentifiers": [{"nameIdentifier": "44763", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Furukawa, Tooru"}]}, {"nameIdentifiers": [{"nameIdentifier": "58", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Nitta, Isami"}]}, {"nameIdentifiers": [{"nameIdentifier": "44765", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Yoshida, Hidetoshi"}]}]}, "item_5_publisher_7": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "日本機械学会"}]}, "item_5_rights_15": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "日本機械学会"}]}, "item_5_select_19": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_5_source_id_11": {"attribute_name": "書誌レコードID", "attribute_value_mlt": [{"subitem_source_identifier": "AN0018742X", "subitem_source_identifier_type": "NCID"}]}, "item_5_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "03875008", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "石橋, 達弥"}], "nameIdentifiers": [{"nameIdentifier": "44756", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "下田, 茂"}], "nameIdentifiers": [{"nameIdentifier": "44757", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "古川, 徹"}], "nameIdentifiers": [{"nameIdentifier": "44758", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "新田, 勇"}], "nameIdentifiers": [{"nameIdentifier": "58", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "吉田, 秀敏"}], "nameIdentifiers": [{"nameIdentifier": "44760", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2019-07-30"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "3_0002.pdf", "filesize": [{"value": "1.1 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 1100000.0, "url": {"label": "3_0002.pdf", "url": "https://niigata-u.repo.nii.ac.jp/record/3698/files/3_0002.pdf"}, "version_id": "8bb33a89-36bc-437b-9bcd-8870ce93d0a8"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "Material Testing", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Measuring Method", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Young\u0027s Modulus of Plastics", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Spherical Indenter Mean Strain Rate", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Performance of Hardness Machine", "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": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "球圧子の押込硬さ試験方式を利用した高分子材料のヤング率測定法", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "球圧子の押込硬さ試験方式を利用した高分子材料のヤング率測定法"}, {"subitem_title": "球圧子の押込硬さ試験方式を利用した高分子材料のヤング率測定法", "subitem_title_language": "en"}]}, "item_type_id": "5", "owner": "1", "path": ["454", "425"], "permalink_uri": "http://hdl.handle.net/10191/1768", "pubdate": {"attribute_name": "公開日", "attribute_value": "2007-05-10"}, "publish_date": "2007-05-10", "publish_status": "0", "recid": "3698", "relation": {}, "relation_version_is_last": true, "title": ["球圧子の押込硬さ試験方式を利用した高分子材料のヤング率測定法"], "weko_shared_id": null}