All issues
Volume 4 (1978)
- Issue 4 Pages 133-
- Issue 3 Pages 93-
- Issue 2 Pages 49-
- Issue 1 Pages 1-
Volume 4, Issue 2
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
[in Japanese]1978 Volume 4 Issue 2 Pages 49-57
Published: April 30, 1978
Released on J-STAGE: February 08, 2010
JOURNAL FREE ACCESSDownload PDF (4006K) -
[in Japanese]1978 Volume 4 Issue 2 Pages 57-62
Published: April 30, 1978
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (6003K) -
[in Japanese], [in Japanese]1978 Volume 4 Issue 2 Pages 62-68
Published: April 30, 1978
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSDownload PDF (960K) -
On the Debonding and Fracture of Yarn by Wedge IndentersH. INOUE, M. IDO1978 Volume 4 Issue 2 Pages 69-75
Published: April 30, 1978
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSAs the first step to investigate the cutting mechanism of composite materials, indentation model of glass fiber reinforced plastic by wedge indenters was accomplished to simplify the relation between tool and work-piece in cutting. The main results obtained are as follows: 1) On the different deformation mechanism with change in various wedge angles, there is a mixed type with compression and bending except for the cutting mechanism and compression type which is proposed by Mulhearn et al. in the case of metals. 2) As for the failure pattern of fibers in the unidirectional glass fiber reinforced plastic, the inclination angle of fibers (α) to the plane surface of materials gives more effective influence than the wedge angle (2θ). 3) In the compression-type mechanism, yarn appears to buckle into helical shapes.View full abstractDownload PDF (8594K) -
T. FURUTA, Y. NOGUCHI1978 Volume 4 Issue 2 Pages 76-80
Published: April 30, 1978
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSThe dynamic mechanical properties of various carbon fiber reinforced plastics were investigated experimentally. The composites consist of standard epoxy resin DX-210 and denatured epoxy resin #3130, #241, #3501 and the reinforcement of high tension type of carbon fiber, GRAFIL AS made by the Mitsubishi Rayon Co., CARBOLON Z-3 by the Nippon Carbon Co., and TORAYCA T-300 by the Toray Co., the experiment was carried out at room temperature. It was found that the static bending strength as well as flexural fatigue strength of the carbon fiber composites depends mainly on the properties of epoxy resin matrix. The ratio of 107 cycles flexural fatigue strength to the static flexural strength was 0.44∼0.55 and flexural fatigue strength was not changed after the test piece was soaked in water for 3 weeks.View full abstractDownload PDF (1469K) -
H. MINAMI1978 Volume 4 Issue 2 Pages 81-87
Published: April 30, 1978
Released on J-STAGE: August 11, 2009
JOURNAL FREE ACCESSIn the use of coated fabrics as tensile members, the fracture toughness is of great importance in structural design. In this experiment the author tested four types of coated fabric for experimental fracture toughness. The calculated expression for the fracture toughness value was given as the rate of energy release, and was transformed using Hedgepeth's analytical theory into a suitable form to be applied to coated fabrics. Further, study was conducted of the treatment of material constants using the finite element method and the result was applied to the improvement of a practical design expression. This equation thus gives the fracture toughness value of coated fabric. This value can be taken as the “force” required to separate the yarn at the crack tips as the crack propagates. Although the coated fabrics used in the experiment all had approximately the same breaking strength, there were some that showed “force” (fracture toughness value) twice that of other fabrics.View full abstractDownload PDF (2711K) -
1978 Volume 4 Issue 2 Pages 88-91
Published: April 30, 1978
Released on J-STAGE: February 08, 2010
JOURNAL FREE ACCESSDownload PDF (556K)
- |<
- <
- 1
- >
- >|