A Binary Model of textile composites: III high failure strain and work of fracture in 3D weaves

McGlockton, M.A.; Cox, Brian N.; McMeeking, R. M.

doi:10.1016/s0022-5096(03)00038-3

Cited by 48 publications

(26 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, due to high costs and long lead times, the development of new components and engineering structures in these materials cannot be achieved by prototype development alone. Cox and Yang (2006) and McGlockton et al (2003) have identified as an essential requirement the ability to predict, at the concept design stage, both the mechanical and thermal properties, coupled with the optimal manufacturing route, of CMC material test coupons and engineering components. Hence, accurate computer-based numerical simulation is an essential part of the materials selection process for CMC component design and manufacture.…”

Section: Introductionmentioning

confidence: 99%

Effects of in-plane extension on transverse thermal conductivity of a carbon–carbon 8-harness satin weave composite

Zhang

Hayhurst

2016

International Journal of Damage Mechanics

View full text Add to dashboard Cite

A finite element-based technique for coupled thermo-mechanical analysis of woven Ceramic MatrixComposites sheets is presented for the prediction of the degradation of transverse thermal transport behaviour with in-plane extension. The thermal conductivity-strain characteristics have been determined, at the tow level, from the properties of the constituent elements, and then extended to tows and composite. The non-linear thermal conductivity-extension behaviour of the tow has been discretised by multi-linear curves, and implemented in a user-defined subroutine in ABAQUS to model the behaviour of the homogenised orthotropic unidirectional tow and its matrix. By using this approach, an 8-Harness Satin weave HITCO C/C composite unit cell has then been analysed. The variation of through-thickness thermal conductivity degradation with in-plane extension has been predicted and compared with the results of experiments. Very good agreement has been achieved. Two classes of behaviour have been experimentally observed: one that exhibits a brittle response, and another that shows a quasi-ductile behaviour. Both classes of behaviour have been predicted and shown to relate, respectively, to strain localisation and instantaneous pull-out deactivation, without localisation being invoked. These responses are reflected directly in the predicted and experimental rates of decay of transverse thermal conductivity with axial extension. It is advocated that the reduction in transverse thermal conductivity with extension and damage can be used as a Structural Integrity Monitor for CMC operational components.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of in-plane extension on transverse thermal conductivity of a carbon–carbon 8-harness satin weave composite

Zhang

Hayhurst

2016

International Journal of Damage Mechanics

View full text Add to dashboard Cite

show abstract

“…Increased operating temperatures from 900-1200°C for coated metallic superalloys, to above 1300°C, for CMCs, have the potential to achieve higher thermal efficiencies and lower emissions (Evans and Naslain, 1995). The economic use of CMCs in engineering components and structures, in such demanding environments at these temperatures, requires an ability to simulate the material, and the component response at both the design and manufacturing stages (McGlockton et al, 2003). To perform optimal design of these engineering components, a highly efficient yet accurate computational model is a necessary requirement, due to the complex spatial topology and interactive damage mechanisms of woven CMCs.…”

Section: Introductionmentioning

confidence: 99%

Influence of applied in-plane strain on transverse thermal conductivity of 0°/90° and plain weave ceramic matrix composites

Zhang

Hayhurst

2011

International Journal of Solids and Structures

View full text Add to dashboard Cite

a b s t r a c tA computationally economic finite-element-based stress analysis model, developed previously by the authors, has been extended to predict the thermal behaviour of ceramic matrix composites with strain-induced damage. The finite element analysis utilises a solid element to represent a homogenised orthotropic medium of a heterogeneous uni-directional tow. The non-linear multi-axial strain dependent thermal behaviour has been discretised by multi-linear curves, which have been implemented by a user defined subroutine, USDFLD, in the commercial finite element package, ABAQUS. The model has been used to study the performance of two CMC composites: a SiC (Nicalon) fibre-calcium aluminosilicate (CAS) matrix, 0°/90°cross-ply laminate Nicalon-CAS; and, carbon fibre-dual carbon-SiC matrix (C/CSiC), plain weave laminate DLR-XT. The global through-thickness thermal conductivity degradation with composite uni-axial strain has been predicted. Comparisons have been made between the predictions and experimental data for both materials, and good agreement has been achieved. For the Nicalon-CAS 0°/90°cross-ply the dominant mechanism of thermal conductivity degradation is combined fibre failure and associated wake debonding; and, for the DLR-XT plain weave the same mechanisms act in combination with out-of-plane shear failure.

show abstract

“…Two approaches can meet these requirements: first, the binary method of finite-element analysis of Cox et al (1994), Xu et al (1995) and McGlockton et al (2003), and second, the modelling of tows using a finite-element-based multi-linear elastic orthotropic materials approach. The finite-element-based multi-linear elastic orthotropic materials approach has the simplicity of considering only one material and avoids the complexity of having to define the effective medium properties used in the binary approach.…”

Section: Introductionmentioning

confidence: 99%

Uni-axial stress–strain response and thermal conductivity degradation of ceramic matrix composite fibre tows

Blacklock²,

2009

View full text Add to dashboard Cite

A physical model, previously developed by one of the authors, has been extended to cover thermal conductivity degradation owing to the uni-axial stress-strain response of aligned groups of fibres or tows found in ceramic matrix composites. Both the stress-strain and thermal models, together with their coupling, have been shown to predict known composite behaviour qualitatively. The degradation of longitudinal thermal properties is shown to be driven by strain-controlled fibre failure; while the degradation of transverse thermal properties is because of the growth of fibre-matrix interface wake-debonded cracks, coupled with strain-driven fibre failure.

show abstract

A Binary Model of textile composites: III high failure strain and work of fracture in 3D weaves

Cited by 48 publications

References 18 publications

Effects of in-plane extension on transverse thermal conductivity of a carbon–carbon 8-harness satin weave composite

Effects of in-plane extension on transverse thermal conductivity of a carbon–carbon 8-harness satin weave composite

Influence of applied in-plane strain on transverse thermal conductivity of 0°/90° and plain weave ceramic matrix composites

Uni-axial stress–strain response and thermal conductivity degradation of ceramic matrix composite fibre tows

Contact Info

Product

Resources

About