巻号一覧
17 巻 (1991)
- 6 号 p. 223-
- 5 号 p. 179-
- 4 号 p. 133-
- 3 号 p. 89-
- 2 号 p. 45-
- 1 号 p. 1-
17 巻, 5 号
選択された号の論文の8件中1～8を表示しています
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篠原 嘉一, 塩田 一路, 渡辺 龍三1991 年 17 巻 5 号 p. 179-185
発行日: 1991/09/15
公開日: 2009/08/11
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森田 幹郎1991 年 17 巻 5 号 p. 186-192
発行日: 1991/09/15
公開日: 2009/08/11
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八木 和雄1991 年 17 巻 5 号 p. 192-198
発行日: 1991/09/15
公開日: 2009/08/11
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加藤 誠一1991 年 17 巻 5 号 p. 198-204
発行日: 1991/09/15
公開日: 2009/08/11
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崔 洛三, 高橋 清1991 年 17 巻 5 号 p. 205-212
発行日: 1991/09/15
公開日: 2009/08/11
ジャーナル フリーUniaxial tensile deformation and fracture behavior of injection-molded, short-glass-fiberreinforced poly (ethylene terephthalate) were investigated with special attention to the effects of fiber diameters (d=6, 10, 16, 23.μm). Influence of fiber surface treatment was also studied. Fiber aspect ratio and fiber number density were measured. Those values exhibited a decrease in average with an increase of fiber diameter. Sizing and silane treatment of fibers resulted in a slight increase of average aspect ratio when compared with a case of etching treatment. A microscopic failure morphology observation during loading to the maximum stress level showed shear banding around fiber ends, debonding and voiding at fiber ends and fiber breakage. Values of the minimum fiber length lmin were presented for fibers of different diameters. Below lmin, failure was hardly observed. In a process of load increase, failure sites joined together in a few local regions to generate catastrophic fracture. The failure processes were similar in specimens with fibers of different d, irrespective of the fiber treatment. Furthermore, critical aspect ratio was measured with average length of broken fibers to estimate the fibermatrix interfacial shear strength.抄録全体を表示PDF形式でダウンロード (5675K) -
崔 洛三, 高橋 清1991 年 17 巻 5 号 p. 213-218
発行日: 1991/09/15
公開日: 2009/08/11
ジャーナル フリーStrengthening mechanisms of injection-molded, short-glass-fiber-reinforced polyethylene terephthalate) under uniaxial tension were studied with particular attention to the effect of fiber diameter (d=6, 10, 16, 23μm). Effects of fiber surface treatment were also investigated. Young's modulus was well described by the Cox model considering the fiber aspect ratio and the normalized center-to-center distance between fibers. Tensile strength was quantitatively analyzed on a presently modified version of Kelly's model. The version took into account the strength increase with increasing fiber lateral surface area as well as the strength decrease caused by failure occurrence. It was found that the version accounted for the obtained strength data rather well. Furthermore it was shown that failure strain and total strain energy were partly affected by the fiber lateral surface area. In conclusion, fiber aspect ratio, normalized center-to-center distance between fibers and fiber lateral surface area were significantly influenced by the change in fiber diameters and fiber surface treatment during injection molding. These values, rather than the fiber diameter itself, considerably affected strengthening mechanisms in short fiber reinforced thermoplastics.抄録全体を表示PDF形式でダウンロード (761K) -
宗宮 詮1991 年 17 巻 5 号 p. 221
発行日: 1991/09/15
公開日: 2009/08/11
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加部 和幸1991 年 17 巻 5 号 p. 221a
発行日: 1991/09/15
公開日: 2009/08/11
ジャーナル フリーPDF形式でダウンロード (120K)
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