All issues
Volume 25 (1999)
- Issue 6 Pages 211-
- Issue 5 Pages 171-
- Issue 4 Pages 131-
- Issue 3 Pages 87-
- Issue 2 Pages 45-
- Issue 1 Pages 1-
Volume 25, Issue 3
Displaying 1-6 of 6 articles from this issue
- |<
- <
- 1
- >
- >|
-
Hiroo MIYAIRI1999 Volume 25 Issue 3 Pages 87-94
Published: May 15, 1999
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (8709K) -
Yoshimichi FUJII, Kazuaki NISHIYABU1999 Volume 25 Issue 3 Pages 95-101
Published: May 15, 1999
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSThe objective of this investigation is to estimate the creep life of glass fiber reinforced plastic (GFRP) under stress-corrosive environments using acoustic emission (AE). The laminates were fabricated using combinations of vinylester resin (R806) and random fiber mat or woven cloth. The creep tests were conducted in 5% nitric acid (HNO3) environment. The AE depends on the loading level and the environment condition. For the creep test, the woven cloth reinforced specimens gave higher number of AE counts than the random mat reinforced specimens. The creep life decreased with increasing creep stress, whereas the rate of AE counts increased with increasing creep stress. A linear relationship was found between the creep life and the AE count rate. Using the proposed equation, a prediction of the creep life of GFRP under corrosive environments would presumably be possible.View full abstractDownload PDF (7303K) -
Shinji OGIHARA, Yuichi KIMURA, Nobuo TAKEDA, Akira KOBAYASHI1999 Volume 25 Issue 3 Pages 102-108
Published: May 15, 1999
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSStress transfer between fiber and matrix in a single fiber reinforced composite with fiber breaks is analyzed. The model is based on a concentric cylinder model and considers an interphase layer between the fiber and matrix. Account is taken of thermal residual stresses arising from a mismatch between the fiber, matrix and interphase. In addition, Poisson's ratio mismatches are also taken into account. Stress and displacement fields in a single fiber composite under uniaxial tension in fiber direction are analyzed. The analytical results are shown for a single fiber composite with interphase of various elastic properties. Young's modulus reduction of composite due to fiber break is also predicted. The analysis would be useful for interpreting exprimental data of fragmentation tests.View full abstractDownload PDF (3643K) -
Kohji SUZUKI, Isao KIMPARA, Kazuro KAGEYAMA1999 Volume 25 Issue 3 Pages 109-119
Published: May 15, 1999
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSIn the first half of this paper, a reformulated general lamination theory based on the layerwise higher-order displacement assumptions is proposed. The proposed general theory is capable of precise laminate modellings responding to analysis demands and hence is very accurate compared to the conventional classical theories. In particular, it is important to note that it can precisely evaluate transverse and interlaminar stresses. In the latter half of this paper, a layerwise higher-order finite element is developed as a specific application of the proposed general theory. The displacement continuity conditions at the layer interfaces are introduced by invoking the penalty method. A numerical example by the developed element is carried out and compared to the exact solutions for confirming its convergence, accuracy and superiority over the conventional solutions.View full abstractDownload PDF (5243K) -
Osamu HASHIMOTO1999 Volume 25 Issue 3 Pages 120-122
Published: May 15, 1999
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (5154K) -
Toshihiro KUROKAWA1999 Volume 25 Issue 3 Pages 122-126
Published: May 15, 1999
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (7486K)
- |<
- <
- 1
- >
- >|