Hygrothermal effects in composites: Influence of geometry and determination of transverse coefficient of thermal expansion

被引：8

作者：

Cantera, M. A. ^{[1
]}

Romera, J. M. ^{[1
]}

Adarraga, I. ^{[1
]}

Mujika, F. ^{[1
]}

机构：

[1] Univ Basque Country UPV EHU, Mat Technol Grp, Dept Mech Engn, Polytech Sch, San Sebastian 20018, Spain

来源：

JOURNAL OF REINFORCED PLASTICS AND COMPOSITES | 2012年 / 31卷 / 19期

关键词：

Composite laminates; transverse coefficient of thermal expansion; residual curvatures; aspect ratio; ROOM-TEMPERATURE SHAPES; RESIDUAL-STRESSES; THERMOPLASTIC COMPOSITES; CURED SHAPE; PART I; LAY-UP; THIN; OPTIMIZATION; PREDICTION; BEHAVIOR;

D O I：

10.1177/0731684412456748

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This work evaluates the influence of geometric properties, the length-to-width ratio, named Aspect Ratio, on curvatures in [theta - 90/theta](T) carbon/epoxy composite laminates at room temperature due to thermal residual stresses. A new method to determine experimentally thermal residual curvatures in composites laminates by defining small-length increments on the surface of deformed plate has been exposed. [-45(4)/45(4)](T) was considered to obtain a simple analytical expression of twisting curvature. A new way to determine transverse coefficient of thermal expansion alpha(2) is proposed in squared laminates based on experimental values of twisting curvatures of [-45(4)/45(4)](T) laminates.

引用

页码：1270 / 1281

页数：12

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