Coupling between Strain Induced Damage, the Degradation of Thermal Properties and Stress-Strain Response of Ceramic Matrix Composites
Lead Research Organisation:
University of Manchester
Department Name: Mechanical Aerospace and Civil Eng
Abstract
Funds are sought to employ a Research Assistant and a Research Student to research the modelling of the coupling between manufacturing porosity/damage, strain-induced damage, the degradation of thermal properties and stress-strain response of woven Ceramic Matrix Composites (CMCs). The project is a continuation of research done on GR/K81256, and on subsequent projects.Two CMC materials have been selected. The first is a simple plain 0/90 weave DRL-XT C/SiC CMC which has previously been studied extensively. The material will be researched using classical Finite Element unit cell modelling techniques to establish methods for modelling the coupling of manufacturing porosity and strain-induced damage with the degradation of thermal conductivity. The modelling will take place at the level of the fibre/tow/matrices materials, with the driver being to predict bulk composite properties from the physical and mechanicl properties of the constituent phases of the composite i.e. fibres, tows of fibres, interfaces between different materials and the matrices which hold the composite together.The next part of the research will be to repeat this modelling exercise on the DRL-XT C/SiC with the more computationally economic and conceptually simple Binary Modelling technique; with a view to establishing its viability and accuracy.Having established this, the Binary Modelling technique used on the first material, will be used to study the second one. That is a more complex HITCO C/C 8-Satin weave which is extensively used in industrial engineering components. The coupling between manufacturing porosity, strain-induced damage and the degradation of the thermal properties of the 8-Satin CMC will be researched. For both materials, success of the computer modelling will be judged against experimental stress-strain-thermal conductivity data collected under grant GR/K81256.The research will establish mehodologies for characterisation of manufacturing porosity, for eliciting physical and mechanical properties of fibres, tows, interfaces and matrices, using semi-inverse techniques and bulk composite experimental data.Lastly, the Binary Modelling technique will be used to predict the stress-strain-damage-thermal transport response of a simple engineering component subjected to combined thermal and mechanical loading; and to assess the viability of the approach. Recommendations will be made on viability and possible constraints to use for thermo-mechanical modelling e.g. complex woven composites.
Organisations
- University of Manchester (Lead Research Organisation)
- Hitco Carbon Composites, Inc. (Collaboration, Project Partner)
- Alstom (Collaboration)
- University of California, Santa Barbara (Collaboration)
- Rockwell Automation (United Kingdom) (Collaboration)
- Rolls Royce Group Plc (Collaboration)
- Goodrich Corporation (Collaboration)
- Rolls-Royce (United Kingdom) (Project Partner)
- United Technologies (United States) (Project Partner)
- University of California, Santa Barbara (Project Partner)
- Alstom (United Kingdom) (Project Partner)
- Rockwell Automation (United States) (Project Partner)
Publications
Blacklock M
(2011)
Multi-Axial Failure of Ceramic Matrix Composite Fiber Tows
in Journal of Applied Mechanics
Blacklock M
(2012)
Initial Elastic Properties of Unidirectional Ceramic Matrix Composite Fiber Tows
in Journal of Applied Mechanics
Hayhurst D.R.
(2013)
Numerical analysis of the coupling between mechanical strain and thermal conductivity of ceramic matrix composites
in Computational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013
SHEIKH M
(2011)
EXPERIMENTAL INVESTIGATION OF THE EFFECT OF MECHANICAL LOADING ON THERMAL TRANSPORT IN CERAMIC MATRIX COMPOSITES
in Journal of Multiscale Modelling
Tang C
(2011)
Predictions of thermo-mechanical behavior of a Nicalon-CAS 0°-90° ceramic matrix composite from constituent materials properties
in Journal of Composite Materials
TANG C
(2011)
FINITE ELEMENT MODELING OF TRANSVERSE DEFORMATION IN REPRESENTATIVE VOLUME ELEMENTS OF CERAMIC MATRIX COMPOSITES (CMCs)
in Journal of Multiscale Modelling
Tang C
(2010)
Stress-strain response and thermal conductivity degradation of ceramic matrix composite fiber tows in 0-90° uni-directional and woven composites
in Journal of Composite Materials
Zhang D
(2011)
Influence of applied in-plane strain on transverse thermal conductivity of 0°/90° and plain weave ceramic matrix composites
in International Journal of Solids and Structures
Zhang D
(2014)
Prediction of stress-strain and fracture behaviour of an 8-Harness satin weave ceramic matrix composite
in International Journal of Solids and Structures
Zhang D.
(2009)
A finite element model to predict multiaxial stress-strain response of ceramic matrix composites with strain induced damage
in ICCM International Conferences on Composite Materials
Description | How CMCs crack under mechanical strain and have their thermal transport properties degraded accordingly. The work defines a rational and systematic approach for identification for either end of life or a need to withdraw from service and repair. |
Exploitation Route | Implementation as analysis techniques in design of airframes and aero engines. Use in structural health monitoring devices. |
Sectors | Aerospace Defence and Marine Electronics Manufacturing including Industrial Biotechology Transport |
Description | The findings have been reported via Journal publications, and principally through seminars around the world: e.g. California, Singapore, Hong Kong, Poland and the UK. Theses have been taken up in structural health monitoring {SHM}, and in analysis for design. |
First Year Of Impact | 2011 |
Sector | Aerospace, Defence and Marine,Electronics,Environment |
Impact Types | Societal Economic |
Description | Alstom |
Organisation | Alstom |
Country | France |
Sector | Private |
Start Year | 2007 |
Description | Goodrich Corporation Materials Center |
Organisation | Goodrich Corporation |
Department | Goodrich Corporation Materials Center |
Country | United States |
Sector | Private |
Start Year | 2007 |
Description | Hitco Carbon Composites, Inc. |
Organisation | Hitco Carbon Composites, Inc. |
Country | United States |
Sector | Private |
Start Year | 2007 |
Description | Rockwell International CO. |
Organisation | Rockwell International |
Country | United States |
Sector | Private |
Start Year | 2007 |
Description | Rolls-Royce plc |
Organisation | Rolls Royce Group Plc |
Country | United Kingdom |
Sector | Private |
Start Year | 2007 |
Description | University of California Santa Barbara |
Organisation | University of California, Santa Barbara |
Country | United States |
Sector | Academic/University |
Start Year | 2007 |
Description | University of California Santa Barbara |
Organisation | University of California, Santa Barbara |
Country | United States |
Sector | Academic/University |
Start Year | 2007 |