日本複合材料学会誌
Online ISSN : 1884-8559
Print ISSN : 0385-2563
ISSN-L : 0385-2563
23 巻, 1 号
選択された号の論文の6件中1~6を表示しています
  • 森田 幹郎
    1997 年 23 巻 1 号 p. 1-2
    発行日: 1997/01/15
    公開日: 2009/08/11
    ジャーナル フリー
  • スマート化のためのセンサ材料・技術(2)ヘルスモニタリング
    北出 真太郎
    1997 年 23 巻 1 号 p. 3-6
    発行日: 1997/01/15
    公開日: 2009/08/11
    ジャーナル フリー
  • 杉本 直, 石川 隆司
    1997 年 23 巻 1 号 p. 7-14
    発行日: 1997/01/15
    公開日: 2009/08/11
    ジャーナル フリー
    Infrared stress measurement technique is applied for non-destructive evaluation of composites with advantage of in-situ and non-contact nature. Thermo-elastic constants of unidirectional carbon-epoxy (CFRP) needed for quantitative measurements are obtained by the infrared stress graphic system. The theoretical thermo-elastic constants are derived through the basic equations and compared with the experimental values. As a consequence, a reliability of the measured thermo-elastic constants is established and capability of this system for quantitative stress measurement is shown. It is also demonstrated that temperature dependency of a transverse coefficient of thermal expansion and a specific heat at constant stress of UD-CFRP cancel each other so as to decrease the temperature dependency of the thermo-elastic constant. This finding can be considered as an advantage of the infrared stress measurement for CFRP. In addition, other influential factors on the measurements are examined. In conclusion, basic knowledge and detailed technique for quantitative infrared stress measurements of CFRP are established.
  • 山田 勝利, 関口 昭一, 井上 泰
    1997 年 23 巻 1 号 p. 15-25
    発行日: 1997/01/15
    公開日: 2010/02/08
    ジャーナル フリー
    The effect of the interfacial shear strength between the carbon fibers and the matrix of carbon fiber reinforced aluminium alloys (CFRM:two PAN based high modulus and a PAN based high strength CFs, Vf=70%) on the bending strength and the compressive strength has been studied. As the interfacial shear strength increases from a lower level of 5 MPa to a higher level of 25 MPa, the tensile strength of the CFRMs contains high modulus CFs decreases rapidly from a high level of 1, 300 MPa to a low level of 500 MPa. However, as the interfacial shear strengths is varied in this region, the compressive strength of the same CFRM increases sharply from a level of 400 MPa to a level of 1, 600 MPa. The compressive strengths of the CFRMs show a high, constant level of 1, 600 MPa in the range of interfacial shear strengths over 40 MPa. CFRMs with low interfacial shear strengths show fracture at the interface and compressive collapse in compression tests. As the interfacial shear strength of the CFRMs increases, fracture at the interface is reduced, and the probability of shear fracture increases. These changes increase the compressive strengths of the CFRMs. When the level of interfacial shear strength is over 40 MPa and the compressive strengths of the CFRMs exhibit an almost constant level of 1, 600 MPa, in this case the compressive specimens show complete shear fracture mode. The interfacial shear strength is considered to depend on the content of Al4C3 accumulated at the interface in the CFRMs.
  • 射場 久善, 香川 豊
    1997 年 23 巻 1 号 p. 26-30
    発行日: 1997/01/15
    公開日: 2010/02/08
    ジャーナル フリー
  • 第7章 航空機構造の設計の実例とその成形方法の特徴
    戸井 康弘, 中村 裕之
    1997 年 23 巻 1 号 p. 31-38
    発行日: 1997/01/15
    公開日: 2009/08/11
    ジャーナル フリー
feedback
Top