Evaluation of strength degradation behavior and fatigue life prediction of plain-woven carbon-fiber-reinforced plastic laminates immersed in seawater

被引：21

作者：

Koshima, Shuhei ^{[1
]}

Yoneda, Shunsuke ^{[2
]}

Kajii, Norihiro ^{[1
]}

Hosoi, Atsushi ^{[2
,3
]}

Kawada, Hiroyuki ^{[2
,3
]}

机构：

[1] Waseda Univ, Grad Sch Fundamental Sci & Engn, Dept Appl Mech, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[2] Waseda Univ, Dept Appl Mech & Aerosp Engn, Shinjuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[3] Waseda Univ, Kagami Mem Res Inst Mat Sci & Technol, Shinjuku Ku, 2-8-26 Nishi Waseda, Tokyo 1690051, Japan

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2019年 / 127卷

关键词：

Polymer-matrix composites; Fatigue; Environmental degradation; Damage mechanics; LONG-TERM DURABILITY; MECHANICAL-PROPERTIES; COMPOSITE-MATERIALS; GLASS; POLYMER; WATER; ENVIRONMENT; MODEL; TEMPERATURE; PERFORMANCE;

D O I：

10.1016/j.compositesa.2019.105645

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of long-term seawater immersion on the mechanical properties and fatigue life of plain-woven carbon-fiber-reinforced plastic (CFRP) laminates was investigated. Under tension loading, the static strength and low-cycle fatigue strength of the CRFP laminates greatly decreased owing to the rapid growth of interface debonding and delamination. However, under compression loading, the fatigue strength of the CRFP laminates dramatically decreased in the entire fatigue region as fiber budding was likely to occur. These findings indicate that the fatigue strength degradation differed depending on the stress ratio and deterioration of the fiber/matrix interface strength. In addition, the fatigue life after seawater immersion was predicted using Epaarachchi and Clausen's model and constant life diagrams. These models were shown to accurately reflect the decrease in fatigue strength resulting from seawater immersion and can thus be used for fatigue life prediction of CFRPs after long-term immersion in seawater.

引用

页数：10

共 59 条

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