Handbook of Analytical Methods for Textile Composites
File : pdf, 7.7 MB, 176 pages
TOC
1. INTRODUCTION
1.1 Scope
1.2 Layout of the Handbook
1.3 Historical Origins
1.4 Internet Access
2. OVERVIEW OF TEXTILES
2.1 Textile Processes
2.1.1 Categorizations
2.1.1.1 Dimensionality
2.1.1.2 Quasi-Laminar and Nonlaminar Textiles
2.1.2 Preforms
2.1.2.1 Weaving
2.1.2.2 Flat Braiding from Cylindrical Mandrels
2.1.2.3 31) Braiding
2.1.2.4 Uniweaves
2.1.2.5 Warp Knits
2.1.2.6 Stitching
2.1.3 Molding
2.2 Materials
2.3 The Geometry of Textile Reinforcement
2.3.1 Ideal geometry
2.3.1.1 Unit Cells
2.3.1.2 2D Weaves
2.3.1.3 2D Braids
2.3.1.6 3D Interlock Weaves
2.3.1.7 3D Braids
2.3.1.8 0rthogonal Nonwoven Composites
2.3.2 The relation of volume fraction and fabric geometry to process parameters
2.3.3 Irregularity
2.4 Integral Structures made by Textile Processes
3. THE CHOICE BETWEEN TEXTILES AND TAPE LAMINATES
3.1 Handling and FabricabiHty
3.2 Consistency of Fiber Content
3.3 Stiffness
3.4 In-Plane Strength
3.4.1 2D Weaves
3.4.2 2D Braids
3.4.3 Stitched Laminates
3.4.4 319 Interlock Weaves
3.5 Out-of-Plane Strength; Delamination and Impact Resistance
3.6 Work of Fracture and Notch Sensitivity
4. FAILURE MECHANISMS
4.1 Shear
4.2 Monotonic Compression
4.2.1 2D Weaves and Braids
4.2.2 Stitched and Stitched-Knitted Laminates
4.2.3 3D Weaves
4.2.4 3D Braids
4.3 Monotonic Tension
4.3.1 2D Weaves and Braids
4.3.2 Stitched, Stitched- Woven, and Stitched-Knitted Laminates 2
4.3.3 3D Weaves
4.4 Delamination under Through-Thickness Tension (Curved Structures)
4.5 Shear Delamination in Bending
4.6 Notch Sensitivity
4.6.1 Cohesive Zones
4.6.2 Splitting at a Notch
4.7 Fatigue
4.7.1 2D Weaves and Braids
4.7.2 3D Interlock Weaves
5. PREDICTION OF ELASTIC CONSTANTS AND THERMAL EXPANSION
5.1 Concepts
5.1.1 Isostrain and Isostress
5.1.2 Tow Properties
5.1.3 Fiber Packing and Resin Pockets
5.1.4 Unit Cells and Periodic Boundary Conditions
5.1.5 Macroscopic Length Scales
5.1.6 Fundamentals of Heterogeneous Elastica
5.1.7 Orientation Averaging
5.1.8 Bending or Axial Shear?
5.1.9 Geometrical Irregularity
5.2 Summary of Available Codes for Analyzing Stiffness
5.2.1 Quasi-laminar and Nonlaminar Textiles
5.2.2 Geometry
5.2.3 Modeling Thermo-Elastic Properties
5.3 Comparison of Code Predictions for Plain Woven Textile Composite
5.4 Code Calibration
5.4.1 Fiber Dominated Elastic constants
5.4.2 Matrix Dominated Elasstic Constants
5.4.3 Calibrating the Fiber Volume Fraction
5.4.4 Calibrating Fiber Waviness
6. NONLINEAR STRESS-STRAIN BEHAVIOUR AND STRENGTH
6.1 Nonlinearity Beyond the Proportional Limit
6.1.1 Tensile (Transverse) Matrix Cracking
6.1.2 Shear Deformation
6.1.3 Plastic Tow Straightening
6.2 Tessellation Models
6.3 Ultimate Strength
6.3.1 Ultimate Tensile Strength
6.3.2 Compressive Strength
6.3.3 Shear Strength
6.3.4 Multi Axial Loads
6.4 Codes for Predicting Nonlinear Stress-Strain Behaviour and Ultimate Strength
6.4.1 Nonlinearity
6.4.2 Ultimate strength
6.5 Notched Strength
7. FATIGUE LIFE
7.1 Kink Formation in Compression-Compression Fatigue
7.2 Tension-Tension Fatigue and Load Ratio Effects
7.3 Delamination Crack Growth in Quasilaminar Textile Composites
8. SUMMARY OF AVAILABLE CODES
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