## Introduction to Composite MaterialsA widely used basic text by two recognized authorities. A unified and disciplined approach; advanced concepts reduced to easy-to-use charts, formulas and numerical examples. |

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### Contents

chapter page | 1 |

transformation of stress and strain | 31 |

offaxis stiffness of unidirectional composites | 65 |

offaxis engineering constants | 98 |

conclusions | 106 |

homework problems | 109 |

inplane stiffness of symmetric laminates | 115 |

laminate code | 116 |

strength of composite materials | 277 |

failure criteria | 278 |

quadratic failure criterion | 280 |

sample strength data | 287 |

transformation equations for strength parameters | 295 |

strengthstress or strength ratios | 302 |

inplane strength of laminates | 306 |

approximate first ply failure envelope | 318 |

evaluation of inplane stiffness modulus | 123 |

crossply laminates | 131 |

angleply laminates | 136 |

quasiisotropic laminates | 142 |

general Pi4 laminates | 146 |

general bidirectional laminates | 149 |

ply stress and ply strain analysis | 157 |

conclusions | 162 |

homework problems | 164 |

flexural stiffness of symmetric sandwich laminates | 167 |

laminate code | 168 |

momentcurvature relations | 169 |

evaluation of flexural stiffness modulus | 178 |

flexural behavior of unidirectional laminates | 185 |

flexural modulus of crossply laminates | 189 |

flexural modulus of angleply laminates | 200 |

ply stress and ply strain analysis | 206 |

conclusions | 211 |

homework problems | 213 |

properties of general laminates | 217 |

index and matrix notations | 218 |

stiffness and compliance of general laminates | 221 |

evaluation of components of stiffness | 232 |

unsymmetric crossply laminates | 239 |

antisymmetric laminates | 249 |

the parallel axis theorem | 256 |

transformation of the coupling stiffness and compliance | 270 |

conclusions | 272 |

homework problems | 274 |

conclusions | 325 |

homework problems | 329 |

heat conduction and moisture diffusion | 330 |

stressstrain relations including hygrothermal strains | 342 |

fabrication stresses | 345 |

residual stresses resulting from environmental change | 349 |

unsymmetric crossply laminates | 355 |

antisymmetric angleply laminates | 357 |

effect of residual stress on failure | 359 |

effects of temperature and moisture on properties of unidirectional composites | 362 |

sample problems | 365 |

conclusions | 371 |

homework problems | 373 |

375 | |

micromechanics | 377 |

general remarks | 378 |

density of composite | 379 |

composite stresses and strains | 381 |

elastic moduli of composite | 386 |

modified ruleofmixtures equations for transverse and shear moduli | 392 |

hygrothermal properties | 400 |

strengths | 405 |

sample problems | 419 |

conclusions | 423 |

homework problems | 428 |

appendix A transformation equations | 433 |

449 | |

### Common terms and phrases

0-degree ply angle-ply laminates anisotropic antisymmetric antisymmetric laminates applied stress behavior compliance components composite materials conventional materials coordinate coupling coefficients coupling modulus curvature defined derived engineering constants Epoxy failure criterion failure envelopes flexural modulus in-plane modulus in-plane stiffness in-plane strain isotropic linear listed in Table longitudinal matrix multiplication Mohr's circles moisture concentration normal coupling notation number of ply on-axis stress-strain relation orthotropic orthotropic material parallel axis theorem plies ply failure ply groups ply orientation ply ratio ply strain ply stress Poisson's ratio positive properties representative volume element residual stresses rotation shear modulus shear strain shear stress shown in Figure stacking sequence stiffness and compliance strain components strain space strain transformation strength parameters strength ratio stress and strain stress components stress or strain stress resultant stress transformation Substituting symmetric laminates temperature thickness tion transformation equations transformed stiffness transverse trigonometric functions uniaxial values Young's modulus zero