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Volume 29, Issue 1
Displaying 1-6 of 6 articles from this issue
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[in Japanese]2003 Volume 29 Issue 1 Pages 1-2
Published: January 15, 2003
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (1458K) -
Hiroo MIYAIRI2003 Volume 29 Issue 1 Pages 3-8
Published: January 15, 2003
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (6503K) -
Norio HIRAYAMA, Goichi BEN2003 Volume 29 Issue 1 Pages 9-16
Published: January 15, 2003
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSIn order to keep a structural safety of FRP cylindrical liquid storage tanks under earthquake loads, not only a static analysis under hydrostatic pressure but a coupled analysis of fluid and structure must be considered. In this paper a method of FEM modeling which employ multi-point constraint equations on the boundary of structure and fluid is proposed. The theoretical results of frequency response behaviors and strains acting on the FRP cylindrical liquid storage tank for dynamic water pressures are compared with the experimental ones. As a conclusion, the FEM simulation agrees well with the experimental results and the present method is a useful and a convenient for analyzing a coupled fluid-structure behavior in cylindrical liquid storage tanks.View full abstractDownload PDF (5802K) -
Naoki TAKANO, Masaru ZAKO, Reiko FUJITSU, Kazuaki NISHIYABU2003 Volume 29 Issue 1 Pages 17-23
Published: January 15, 2003
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSTextile composite materials have large deformation characteristics, which leads to the superior formability. However, the large deformation of the textile preform is very much influential on the properties of the molded composite components. Hence, this paper aims at the measurement of large strain distribution in the complex shaped molded components of textile composites. A novel digital image-based procedure is proposed. The Green-Lagrange strain tensor is employed to express the large strain exactly and to avoid the misestimation due to the unmeasureable rotational motion during the closed molding. In pursuit of this, the deformation gradient tensor is calculated by the digitized information from the lattice pattern image drawn on the molded component. The proposed method is demonstratively applied to the deep-drawn components of rib-knitted fabric thermoplastic composites.View full abstractDownload PDF (5848K) -
Seung-Hwan LEE, Hiroshi NOGUCHI, Young-Bae KIM2003 Volume 29 Issue 1 Pages 24-32
Published: January 15, 2003
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSThe Mode II interlaminar fracture tests of hybrid composites with non-woven carbon tissue (NWCT) were carried out using the end-notched-flexure (ENF) specimen. The hybrid composites were made by interleaving NWCT prepreg between CFRP layers. CFRP specimen [024] as well as hybird specimen [012/T/012] were prepared to compare the Model II interlaminar fracture tough-ness. Here, the symbol “/T/” means that NWCT prepreg is located at a 0/0 mid-plane of the hybrid specimen. Three kinds of interlaminar cracks which have different positions in the NWCT layer were introduced to the hybrid specimen. It was found that the NWCT layer has the short fiber bridging effect due to in-plane random short carbon fibers and increases the interlaminar fracture toughness of laminated composites. The fracture surfaces and side-sections of the hybird specimens were observed with an optical microscope and a scanning elelctron microscope, and the failure mechanism was discussed.View full abstractDownload PDF (9036K) -
Takashi ISHIKAWA2003 Volume 29 Issue 1 Pages 33-36
Published: January 15, 2003
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (578K)
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