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Akira Horikawa, Fumio Teraoka
1978 Volume 31 Issue 10 Pages
T141-T146
Published: October 25, 1978
Released on J-STAGE: February 12, 2010
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A short fiber orientation in FRP varies with deformation . The variation of individual fiber orientation during tensile, creep and stress relaxation is examined using FRP prepared from low density polyethylene and carbon fibers. The variations of short fiber orientation can be calculated on the assumptions that the deformation of FRP occurs uniformly and that the fibers are rigid .The relation between the deformation of FRP and the variations of short fiber orientation is solved by comparison of observed and calculated data. On the basis of this result, the variations of short fiber orientation distribution and these standard deviations are calculated .
Good agreement is obtained between the observed and calculated curves. The variations of short fiber orientation during tensile and creep are represented by elongation, shrinkage and initial orientation angle, regardless of the fiber length and position . If short fibers contact with matrix sufficiently, the variations of short fiber orientation are reversible regardless of the deformation process during creep. The variations of short fiber orientation are not observed during stress relaxation. As the deformation of FRP increases, calculated values have shown that probability density curves of the fiber orientation distributions become sharp and that their standard deviations gradually decrease.
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Yoshinobu Kamata, Rikuhiro Kinoshita, Shinichi Mizuno
1978 Volume 31 Issue 10 Pages
T147-T152
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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It is well known that the stitch length increases with increasing operational speed of the singleneedle lockstitch sewing machine. This paper aims to investigate the causes of such increases of stitch length by determining the change of the fabric feed motion. The locus of the point of feed dog during operation were photographically observed for this purpose. The observation has revealed that the feed length of the fabric, increased with increasing operational speed, is dependent on the speed of the feed dog and can almost be predicted both qualitatively and quantitatively.
The presser foot may move up and down at low pressure of the presser foot and high-speed operation. In other words, the presser foot is disconnected from the feed dog. In such case, the fabric cannot be fed normally. Therefore, the higher pressure of the presser foot might be required at high-speed sewing than at low speed.
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P414-P415
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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T. Oshima
1978 Volume 31 Issue 10 Pages
P417-P424
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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T. Taniguchi
1978 Volume 31 Issue 10 Pages
P425-P429
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P431-P436
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P436-P440
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
JOURNAL
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P441-P445
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
JOURNAL
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P445-P449
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
JOURNAL
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P449-P452
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P453-P459
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P459-P467
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
JOURNAL
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P467-P472
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P474-P477
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
1978 Volume 31 Issue 10 Pages
P477-P481
Published: October 25, 1978
Released on J-STAGE: February 12, 2010
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[in Japanese], [in Japanese]
1978 Volume 31 Issue 10 Pages
P482-P487
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P488-P490
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P490-P492
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P492-P494
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P494-P497
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P498-P501
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P502-P503
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P504-P507
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P508-P511
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P511-P518
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P518-P524
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P525-P529
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P530-P534
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P534-P539
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese], [in Japanese]
1978 Volume 31 Issue 10 Pages
P539-P544
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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[in Japanese]
1978 Volume 31 Issue 10 Pages
P544-P547
Published: October 25, 1978
Released on J-STAGE: October 27, 2009
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