WEKO3
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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%. 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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
http://hdl.handle.net/10191/1768
http://hdl.handle.net/10191/1768c713b2ae-dc40-4846-8d39-7698e1bb50c9
名前 / ファイル | ライセンス | アクション |
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3_0002.pdf (1.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-05-10 | |||||
タイトル | ||||||
タイトル | 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 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | 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 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Material Testing | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Measuring Method | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Young's Modulus of Plastics | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Spherical Indenter Mean Strain Rate | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Performance of Hardness Machine | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
その他のタイトル | ||||||
その他のタイトル | The Measuring Method about Young's Modulus of Plastics Using the Indenting Hardness Test by a Spherical Indenter | |||||
著者 |
石橋, 達弥
× 石橋, 達弥× 下田, 茂× 古川, 徹× 新田, 勇× 吉田, 秀敏 |
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著者別名 | ||||||
識別子 | 44761 | |||||
識別子Scheme | WEKO | |||||
姓名 | Ishibashi, Tatsuya | |||||
著者別名 | ||||||
識別子 | 44762 | |||||
識別子Scheme | WEKO | |||||
姓名 | Shimoda, Shigeru | |||||
著者別名 | ||||||
識別子 | 44763 | |||||
識別子Scheme | WEKO | |||||
姓名 | Furukawa, Tooru | |||||
著者別名 | ||||||
識別子 | 58 | |||||
識別子Scheme | WEKO | |||||
姓名 | Nitta, Isami | |||||
著者別名 | ||||||
識別子 | 44765 | |||||
識別子Scheme | WEKO | |||||
姓名 | Yoshida, Hidetoshi | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 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's elastic contact law, the Young's 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}]^<1/2>…(2), d_l = 2[Dδ_t×(1-δ_t/D)}^<1/2>…(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's moduli calculated from δ_t and δ_r using Eqs. (1)-(4) are compared to the Young's moduli measured from a compression test, their Young's values consist within an accuracy of about ±5-10%. Therefore, the measuring method about Young's modulus of plastics using the indenting hardness test by a spherical indenter can be applied to the present hardness testing machines. | |||||
書誌情報 |
日本機械学会論文集. A編 en : 日本機械学会論文集. A編 巻 53, 号 495, p. 2193-2202, 発行日 1987-11 |
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出版者 | ||||||
出版者 | 日本機械学会 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03875008 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN0018742X | |||||
権利 | ||||||
権利情報 | 日本機械学会 | |||||
著者版フラグ | ||||||
値 | publisher |