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Characterization for the Cracking and Shearing Behaviour of Carbon/Epoxy Laminated Composites

Acknowledgements第3-4页
Dedication第4-5页
Abstract第5页
Contents第9-15页
Preface第15-17页
Chapter one: Introduction第17-35页
    1.1. General第17-18页
    1.2. Crack repairing materials第18-20页
        1.2.1. Traditional materials第18页
        1.2.2. High performance fibre materials第18-19页
        1.2.3. Carbon fibre composite materials第19-20页
    1.3. Ways of rehabilitation第20-21页
        1.3.1. Mechanical riveting第20页
        1.3.2. Adhesive bonding第20-21页
        1.3.3. Fabric reinforcing and repairing第21页
        1.3.4. Laminated composite materials repairing第21页
    1.4. The relevant performances and measurements第21-23页
        1.4.1. Tensile properties第21-22页
        1.4.2. Tensile failure第22页
        1.4.3. Measurements and tests第22-23页
        1.4.4. Structural performance第23页
    1.5. Architectural applications第23-24页
        1.5.1. Buildings第23-24页
        1.5.2. Bridges and highways第24页
        1.5.3. Walls第24页
    1.6. Research methodology第24-30页
        1.6.1. Materials第24页
        1.6.2. Characterization methods第24-27页
        1.6.3. Fibre reinforcement materials for composites第27-28页
        1.6.4. Repairing engineering第28页
        1.6.5. Mechanics and theoretical estimations第28页
        1.6.6. Adhesive bonding第28-29页
        1.6.7. Fibre composites第29-30页
    1.7. Main problems in practice第30-33页
        1.7.1. Materials and structure第30-31页
        1.7.2. Characterization methods第31-32页
        1.7.3. Methods and mechanisms of adhesion第32页
        1.7.4. Mechanisms to resist cracking第32-33页
    1.8. Purpose and objectives第33-35页
        1.8.1. Purpose第33页
        1.8.2. Objectives第33页
        1.8.3. Research第33-35页
Chapter two: Current results and studies on carbon fibre laminated composites for crack repairing第35-63页
    2.1. Carbon fibre materials第35-39页
        2.1.1. Carbon fibres第35-36页
        2.1.2. Carbon fibre composites第36-37页
        2.1.3. Tensile properties第37页
        2.1.4. Shear properties第37-38页
        2.1.5. Fibre /matrix interface第38页
        2.1.6. Uni-directional carbon fibre composites第38页
        2.1.7. Application of carbon fibre composites第38-39页
        2.1.8. Mechanism of failure of composites第39页
    2.2. Mechanics of carbon fibre reinforced composites第39-43页
        2.2.1. Fundamental models第39-41页
        2.2.2. Pure tensile model第41-42页
        2.2.3. Pure shearing model第42-43页
    2.3. Effect of fibre alignment and stacking sequence on tensile strength第43-50页
        2.3.1. Laminated carbon fibre composites第43-48页
        2.3.2. Calculation for fibre alignment第48-49页
        2.3.3. Effect of stacking sequence on the tensile strength第49页
        2.3.4. Effect of fibre volume fraction on the uniaxial tensile strength第49-50页
    2.4. Adhesives and adhesive bonding第50-54页
        2.4.1. Significance of adhesive bonding第50-51页
        2.4.2. Types of bonding joints第51-53页
        2.4.3. Polymer matrix materials第53页
        2.4.4. Strength and failure modes第53-54页
    2.5. Testing of adhesive joints第54-57页
        2.5.1. Adhesive joint strength tests第54页
        2.5.2. Tensile test第54-55页
        2.5.3. Shear test第55页
        2.5.4. Peel test第55-57页
    2.6. Parameters affecting adhesive joints第57-61页
        2.6.1. Surface properties第57-58页
        2.6.2. Adhesive properties第58页
        2.6.3. Wetting, surface energy, and work of adhesion第58-60页
        2.6.4. Factors affecting adhesive joints第60-61页
    2.7. Summary第61-63页
Chapter three: Materials and experimental methods第63-82页
    3.1. Materials第63-65页
        3.1.1. Fibres and preforms第63-64页
        3.1.2. The matrix material and composite fabrication第64-65页
        3.1.3. Sand and cement materials第65页
    3.2. Sample preparation第65-67页
        3.2.1. Sample sizes and numbers第65-66页
        3.2.2. Single and angle-ply laminated UD materials第66页
        3.2.3. Cement-sand mixture treatment第66-67页
    3.3. Testing procedures第67-69页
        3.3.1. Selection of structure第67-68页
        3.3.2. Sample adhesion第68页
        3.3.3. Materials specifications第68页
        3.3.4. Testing approach第68-69页
    3.4. Testing apparatus design第69-73页
        3.4.1. Theory第69-70页
        3.4.2. Material design第70-71页
        3.4.3. Equipment design第71-73页
    3.5. The fundamental functions and principles第73-76页
        3.5.1. The cracking principle第73-74页
        3.5.2. The shear testing principle第74-75页
        3.5.3. Tensile testing principle第75-76页
    3.6. Methods of calculations第76-79页
        3.6.1. Shear stress-strain第76页
        3.6.2. Tensile stress-strain calculations第76-77页
        3.6.3. Cracking strain第77-78页
        3.6.4. Cracking stress第78-79页
    3.7. Fabric and laminated composite configurations第79-80页
    3.8. Fractography, thickness and diameter measurements第80页
    3.9. Summary第80-82页
Chapter four: Results and discussions on tensile behaviour and tensile cracking第82-102页
    4.1. Preform structure and tensile behaviours of carbon/epoxy composites第82-87页
        4.1.1. Introduction第82页
        4.1.2. Basic data of the materials第82-83页
        4.1.3. Tensile characteristics of the materials第83-85页
        4.1.4. Fractographs of the composites第85-87页
    4.2. Effect of transversely aligned strands on the axial tensile strength第87-91页
        4.2.1. Introduction第87-88页
        4.2.2. Calculations and test results第88-90页
        4.2.3. Discussion第90-91页
    4.3. The tensile behaviour of adhesively bonded joints第91-100页
        4.3.1. General introduction第91-93页
        4.3.2. Results and discussion第93页
        4.3.3. The critical adhesion length第93-95页
        4.3.4. Tensile cracking of carbon fabrics第95-97页
        4.3.5. Tensile cracking of angle-ply laminated composites第97-100页
    4.4. Summary第100-102页
Chapter five: Results and discussion on shearing第102-122页
    5.1. Basic explanations第102-104页
        5.1.1. Interlaminar tension shear第102页
        5.1.2. Shear fracture criterion第102-103页
        5.1.3. Performance of adhesive joints第103页
        5.1.4. Failure characteristics of adhesive joints第103-104页
    5.2. Shearing behaviour第104-112页
        5.2.1. Characteristic parameters from shearing test第104-105页
        5.2.2. The critical adhering length第105-107页
        5.2.3. The shearing behaviour of the carbon fabrics第107-110页
        5.2.4. The shearing behaviour of the of the angle ply laminates第110-112页
    5.3. Failure characteristics and analysis第112-117页
        5.3.1. Failure characteristics第112-115页
        5.3.2. Failure characteristics of cement-sand mixtures第115-116页
        5.3.3. Analysis of the failure modes of the samples第116-117页
    5.4. Preferential optimization of the structures第117-118页
        5.4.1. Carbon fabrics第117-118页
        5.4.2. Angle ply laminates第118页
        5.4.3. Comparison between fabrics and laminated composites第118页
    5.5. Analysis of the factors affecting the test results第118-120页
        5.5.1. Laminating angles第118-119页
        5.5.2. Fibre matrix interface第119页
        5.5.3. Interlaminar shearing第119-120页
        5.5.4. Fibre volume fraction第120页
    5.6. Summary第120-122页
Chapter six: Conclusion and Recommendations第122-126页
    6.1. Conclusion第122-125页
    6.2. Recommendations第125-126页
References第126-132页
Publications of the author第132页

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