Pii: S1359-835x(98)00051-7
نویسندگان
چکیده
Polymer matrix composites can be severely degraded/damaged under thermal loading caused by fire. Fire degradation of fiber composites is a serious concern in large load-bearing structural applications such as ship, piers and bridges. This paper describes results from combined experimental and theoretical studies of compressive failures of polymer-matrix glass-reinforced composites which have undergone fire degradation. The focus of the present paper is on single skin composites. Experimental studies have included structural collapse under combined thermal (i.e. fire) and mechanical loading. Detailed analytical and numerical simulations of panel deformation and collapse show good agreement with the experimental observations. A quantitative methodology for developing the design approach is proposed and discussed with respect to the experimental results and thermal boundary conditions. q 1998 Published by Elsevier Science Ltd. All rights
منابع مشابه
Pii: S1359-835x(98)00146-8
This paper discusses a summary of analytical modeling as applied to selected smart composites which include piezoelectric composites, shape memory alloy (SMA) fiber composites, and piezoresistive composites. First we discuss the definition of ‘smart materials’ which exhibit coupling among mechanical, thermal and electromagnetic behavior, then the Eshelby’s formulations based on a simple algebra...
متن کاملPii: S1359-835x(98)00124-9
Monotonic and fatigue tests were carried out in four-point bending on a glass fabric/epoxy composite, using two different stress ratios. Ultimate failure both in monotonic tests and in fatigue was precipitated by microbuckling phenomena happening at the compression side of the specimens. The experimental results were evaluated adopting a fatigue model statistically implemented, based on the hyp...
متن کاملPii: S1359-835x(98)00101-8
A methodology is introduced to test carbon-fiber-reinforced, hoop-wound composite cylinders for their biaxial mechanical properties under axial compression and hoop tension. The understanding of the behavior of these composites under biaxial loads is extremely important in the design of pulsed magnets. These composites are used as reinforcements for both the inner conducting layers and as an ov...
متن کاملPii: S0167-2789(98)00051-7
It is shown that the minimum energy required to transmit a natural unit of information (nat) over a noisy channel is k T, where T is the effective noise temperature which depends on the interaction between the information career and the environment. The result follows from the entropy defect principle and general laws of quantum dynamics without any specific assumptions. © 1998 Published by Els...
متن کاملPii: S1359-835x(00)00046-4
This paper covers numerical investigations of the draping of woven fabrics into a “hat” shape, combining a hemispherical cup with a wide flat rim. A mechanical approach is adopted using finite element analysis (FEA) methodology. In this, the fabric is considered as a solid sheet with mechanical properties and friction properties. In this study, a linear elastic anisotropic material model descri...
متن کامل