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全文: "日本刀"
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  • 畝田 道雄, 村上 昇啓, 高島 伸治, 神宮 英夫, 石川 憲一
    精密工学会誌
    2017年 83 巻 4 号 361-366
    発行日: 2017/04/05
    公開日: 2017/04/05
    ジャーナル フリー
    Japanese sword is one of the most important representative traditional crafts in Japan. The familiar characteristics of Japanese sword is the mechanical functionality and beauty of handcrafts industrial art. Newly produced Japanese swords by the modern sword smith work are rated by the prominent (expert) sword smiths and so on. However, novice sometimes cannot understand the difference of the evaluation results. This paper tries the scientific evaluation of the beauty of the Japanese sword from the viewpoints of both the sword smiths and novice. Here, a sensual information is one of the beauty items of the Japanese sword. The sensual information is felt by the sensibility combined by the several components. In this paper, the order of priority and relevance of these several components are clarified by using the DEMATEL method. Moreover, by using the Thurstone method, the viewpoint of the novice is determined.
  • 上条 直裕, 伊藤 公久, 渡邉 妙子
    日本画像学会誌
    2012年 51 巻 6 号 641-649
    発行日: 2012/12/10
    公開日: 2012/12/13
    ジャーナル 認証あり
    近年,歴史的文化財の保護,継承を目的とするデジタルアーカイブ活動が盛んになっている.特に日本刀は個人所有が主であり,歴史的人物,時代背景とのつながりが強いため文化財としての価値は高く,アーカイブによる記録,閲覧の要請は強い.日本刀はその道具としての機能「折れず,曲らず,よく切れる」を達成するための工夫がそのまま美しさを作り出している.これら美しさを示す特徴は観察,理解が難しく,専門家の視点での日本刀の見えを表現できる画像の取得が期待されてきた.日本刀の観察は照明と視線との相対姿勢を調整しながら,微妙な色合い,文様を読み取ることが重要である.我々は,照明角度,視線角度を調整可能とするマルチアングル撮像光学系,正確な色情報を取得するマルチバンド分光撮像系を搭載した日本刀デジタルアーカイブシステムを開発した.また,本システムは色補正,合成,明るさ補正機能を搭載し,専門家のイメージを共有できる画像表示を実現している.本稿では,日本刀の高精細な画像を取得可能とする日本刀デジタルアーカイブシステムの機能,構成とアーカイブ画像における効果を紹介する.
  • 大井 恭, 畝田 道雄, 石川 憲一
    精密工学会学術講演会講演論文集
    2018年 2018S 巻
    発行日: 2018/03/01
    公開日: 2018/09/01
    会議録・要旨集 認証あり

    本研究では,新作日本刀の評価・設計法の提案と実証を目的として,日本刀の「美」を具現化する刀匠や刀剣研師の深層意識を可視化することによって,新作日本刀の評価に起因する要素の抽出を試みる.さらに,現代刀の審査・展覧会における評価結果を統計的・数理解析的に分析することを通じて,高い評価が得られた現代刀をベースに新作日本刀の形状設計を試みた.ここでは,これらの検討によって得られた結果を報告する.

  • 青木 啓将
    日本文化人類学会研究大会発表要旨集
    2014年 2014 巻 B10
    発行日: 2014年
    公開日: 2014/05/11
    会議録・要旨集 フリー
     本発表は、日本刀製作者刀匠(刀鍛冶)にとっての「生きるための刀」、すなわち自身の生計を維持していくために製作される刀と刀匠各々に目指される刀の違いと、これらの違いを生む社会背景に焦点を当て、日本刀の現代的な創造のあり方について検討する。 それを踏まえ、日本刀のどのような価値・意味が継承され、また現代において創造されようとしているのかを考える。
  • 林 伯原
    武道学研究
    2014年 46 巻 2 号 59-75
    発行日: 2014/01/31
    公開日: 2015/01/31
    ジャーナル フリー
    Prior to the times of Jiajing (A.D.1521-1566), Japanese swords were often imported into China as tributes, trading goods and complimentary gifts, but there was no record that Chinese troops or civilians had learned and widely used Japanese swordplay, except for the imperial guards. Since the year of Jiajing 31 (A.D.1552), the massive Japanese invasion of the southeast coast of China made Chinese people notice the advantage of Japanese swordplay. Meanwhile Chinese army and civilians who loved Chinese wushu needed better sword skills,therefore Japanese swordplay became rapidly known and absorbed by them and spread among the folk people. At that time some members of the Chinese army were equipped with Japanese long swords; the warriors used cane shields, and the archers and the cavalry were equipped with Japanese waist broadswords. Training involved the repetition of solo patterns or routines first, followed by matches with other people. Some civilians who learned Japanese swordplay exercised mainly the routines, others mainly practiced a single pose or stance. The kind of Japanese swordplay that spread among civilians could be divided into two types: in one, people were trained by original Japanese swordplay; in the other one, people practiced Japanese swordplay with Chinese swordsmanship together, integrating Chinese swordplay and Japanese swordplay into a new kind of swordplay. In both cases, the practice of Japanese swordplay introduced into China was characterized by the use of patterns or routines.But the routines used by the Chinese army and the folk people were greatly different. In the army, the routine was laid out from the perspective of group training, so it was brief and simple; while the folk routine was laid out from an individual point of view, so it was long and complicated.
  • 蒔田 宗次
    鐵と鋼
    1938年 24 巻 12 号 1106-1112
    発行日: 1938/12/25
    公開日: 2009/07/09
    ジャーナル フリー
    Participated in work of the party engaging specially in the repair of Japanese swords in the front, the author observed the superiority of Japanese swords in the light of the present Sino-Japanese fighting.
    It is a well-acknowledged fact that the Japanese sword has an excellent sharpness. Its splendid effect has invariably been shown in action at the present crisis, there being many instances to be quoted from numerous exploits in the actural occasions.
    A large number of Japanese swords being used in the front, sword makers are naturally very busy at present.
    We know the physical effect of the Japanese sword from its sharpness as well as the user's skill. Besides the most important matter is our strong faith for the Japanese sword. Consequentty, the mental effect of it against the enemy is very powerful with the action of the "Japanese spirit" in it.
    Therefore, we observe the Japanese sword not only materially but also spiritually. In short, the Japanese sword is considered to be a spiritual material, which stands to guard strongly and to prosper eternally the Land of Our Mikado.
  • 村上 昇啓, 畝田 道雄, 石川 憲一
    実験力学
    2016年 16 巻 3 号 250-254
    発行日: 2016/09/28
    公開日: 2016/09/28
    ジャーナル フリー

       Japanese sword is Japanese historical famous weapon since ancient times, and has perfectly characteristics as the sharply, strongly influenced by the deformation and broken. Furthermore, the Japanese sword has also an affective characteristics as the traditional crafts, which recognized by the warlords. While the affective shape and historical consideration of Japanese sword is one of the most important variables for evaluating the new generation sword by the modern swordsmith, the Japanese sword have been generally archived by the two-dimensional scanning method. This study aims to try the affective shapely evaluation by three-dimensional archiving of Japanese sword. For the fundamental examination, we designed and manufactured the three-dimensional archiving device by using the stereo digital image correlation method. This paper presents the overview of the manufactured device and the basic measurement results. The goal of this study is to clarify the affective design from the viewpoints of both the shape and the sensual beauty.

  • 川上 義弘
    鐵と鋼
    1918年 4 巻 5 号 507-530
    発行日: 1918/05/25
    公開日: 2009/07/09
    ジャーナル フリー
  • 佐々木 直彦(胤成)
    溶接学会誌
    2015年 84 巻 7 号 504-507
    発行日: 2015年
    公開日: 2016/02/02
    ジャーナル 認証あり
  • 真鍋 達哉, 臺丸谷 政志, 藤木 裕行
    北海道支部講演会講演概要集
    2011年 2011.50 巻 116
    発行日: 2011/10/01
    公開日: 2017/06/19
    会議録・要旨集 認証あり
  • 松英 達也
    材料
    2017年 66 巻 9 号 S6-
    発行日: 2017/09/15
    公開日: 2017/09/20
    ジャーナル フリー
  • 林 伯原
    武道学研究
    2010年 43 巻 Supplement 号 11
    発行日: 2010年
    公開日: 2014/04/04
    ジャーナル フリー
  • 俵 國一
    鐵と鋼
    1920年 6 巻 8 号 685-689
    発行日: 1920/08/25
    公開日: 2009/05/26
    ジャーナル フリー
  • 俵 國一
    鐵と鋼
    1920年 6 巻 4 号 337-368
    発行日: 1920/04/25
    公開日: 2009/05/26
    ジャーナル フリー
  • 谷村 〓
    鉄と鋼
    1981年 67 巻 3 号 497-507
    発行日: 1981/03/01
    公開日: 2010/01/19
    ジャーナル フリー
  • 佐々木 直彦, 堀井 胤匡, 藤原 幹男, 斎藤 英之, 三澤 俊平
    鉄と鋼
    2000年 86 巻 1 号 45-50
    発行日: 2000/01/01
    公開日: 2009/06/19
    ジャーナル フリー
    Micro-strucure, micro-hardness and micro-absorbed impact energy in the Japanese sword have been investigated to clarify excellent mechanical properties of the Japanese sword. The Japanese sword specimen used in the present research has been made by using TSUKURIKOMI process which combines four kinds of steels; HAGANE (edge), SHINGANE (core), MUNEGANE (back) and KAWAGANE (side) steels, with different carbon contents. By this process, HASAKI (edge) side becomes high carbon steel and MUNE (back) side possesses low carbon steel. The cooling velocity in quenching of the Japanese sword is controlled by TSUCHIOKI treatment which coats the clay thinner in the HASAKI side and thicker in the MUNE side. The HASAKI side is quickly cooled and the MUNE side is slowly cooled. The micro-structure in the HASAKI side shows martensite while the MUNE side shows the coexist structure of ferrite and pearlite. The HASAKI side has a lower value while the MUNE side shows a higher value in the micro absorbed impact energies obtained with the 1.0 and 0.7 mm square miniaturized specimens. It has been shown clearly that the TSUKURIKOMI and the TSUCHIOKI processes give the excellent gradated balance of strength-toughness to the Japanese sword.
    The ORIKAESHI (folding) forging has an effect both on the carbon content and as quenched hardness in HAGANE steel. The most suitable times of ORIKAESHI cycles which adjust to the carbon content of 0.55-0.60 mass% and hardness of 800HV1 have been determined to be thirteen times. These times of ORIKAESHI cycles correspond to the optimum traditional cycles lying between twelve and fifteen times. The present research from the viewpoint of the metallurgy sheds light on the empirical rule in the traditional Japanese sword processing.
  • 鬼柳 善明, 塩田 佳徳
    波紋
    2015年 25 巻 1 号 3-7
    発行日: 2015年
    公開日: 2018/11/14
    ジャーナル フリー

    Crystallographic analysis of metal cultural heritages is one of important neutron applications, since nondestructive analysis is desired. We have been studying Japanese swords using the pulsed neutron imaging, and obtained position dependent information of crystallite size, anisotropy and lattice spacing. The results coincide with destructive studies, which indicated that the method was useful for the metal artifacts.

  • 柳屋 岳彦, 臺丸谷 政志, 藤木 裕行, 塩崎 修
    北海道支部講演会講演概要集
    2012年 2012.51 巻 114
    発行日: 2012/10/20
    公開日: 2017/06/19
    会議録・要旨集 認証あり
  • 坂井田 喜久, 村井 俊之, 吉田 始
    材料
    2013年 62 巻 7 号 430-436
    発行日: 2013/07/15
    公開日: 2013/07/20
    ジャーナル フリー
    The Japanese sword “WAKIZASHI” used in this study was made by sword craftsman. The surface of blade was finished by rough grinding just before final hand polishing process. In this study, the sword was cut using a wire-electrical discharge machine. Using a cut specimen, microstructure, hardness and carbon content of cross section of blade were measured experimentally. Surface residual stress distributions from the front edge “HASAKI” to the ridge “MUNE” of blade were measured by x-ray stress measurement. The diffraction from 211 plane of ferrite or martensite by Cr-Kα radiation was used. As a result, the edge of blade “HA” had martensite structure. The area of “HA” was 10% of the total cross-sectional area. Other part remained pearlite and ferrite structures. The carbon density between two different carbon steels, the surface layer and core materials, changed continuously by diffusion. The hardness distribution coincided with the carbon content distribution. Biaxial principal compressive residual stresses were found to be generated and have constant stress gradients in depth on the ground blade surface because the ψ-splitting was not observed and the measured 2θ vs. sin2ψ relations could be approximated as a parabolic curve. Large compressive residual stresses more than -1.0 GPa were distributed from “HASAKI” to “HAMON” on the edge of blade. On the other hand, compressive residual stresses diminished gradually to -500 MPa from “HAMON” to “MUNE”. The surface compressive residual stress distribution directly depended on the cross sectional microstructure of sword. Additional compressive residual stress field induced by rough grinding was superimposed on the residual stress field after quenching and tempering process.
  • 菊田 多利男
    金属表面技術
    1958年 9 巻 12 号 441-443
    発行日: 1958/12/20
    公開日: 2009/10/30
    ジャーナル フリー
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