Introduction to Fatigue in Metals and CompositesAn Introduction to Fatigue in Metals and Composites provides a balanced treatment of the phenomenon of fatigue in metals, nonmetals and composites with polymeric, metallic and ceramic matrices. The applicability of the safe life philosophy of design is examined for each of the materials. Attention is also focused on the stable crack growth phase of fatigue and differences in the operative mechanisms for the various classes of materials are considered. The impacts of these differences on the development of damage tolerance strategies are examined. Among topics discussed are; variable amplitude loading with tensile and compressive overload; closure obstruction; bridging mechanisms; mixed mode states; small cracks; delamination mechanisms and environmental conditions. The arrangement and presentation of the topics are such that An Introduction to Fatigue in Metals and Composites can serve as a course text for mechanical, civil, aeronautical and astronautical engineering and material science courses as well as a reference for engineers who are concerned with fatigue testing and aircraft, automobile and engine design. |
Contents
Introduction | |
12 EVOLUTION OF TESTING PROCEDURES | 2 |
13 SCOPE OF FATIGUE IN SOLIDS | 4 |
14 DEVELOPMENT OF DESIGN METHODS | 7 |
Elements of deformable body analysis | 10 |
23 GOVERNING EQUATIONS | 16 |
24 THE CRACKED BODY PROBLEM | 23 |
Macroscopic and microscopic features of fatigue | 40 |
57 ENVIRONMENT | 176 |
58 NONMETALS | 187 |
59 COMPOSITES | 188 |
Structural integrity of metals | 191 |
62 STATISTICAL CONSIDERATIONS | 192 |
63 MULTIPLE SITE DAMAGE | 200 |
64 BONDED PATCH REPAIRS | 203 |
Structural integrity of polymeric matrix composite laminates | 205 |
32 METALS | 41 |
33 POLYMERIC SOLIDS | 48 |
34 BRITTLE SOLIDS | 51 |
35 METALLIC MATRIX COMPOSITES | 58 |
36 POLYMERIC MATRIX COMPOSITES | 65 |
37 CERAMIC MATRIX COMPOSITES | 77 |
Engineering characterizations of safe life | 80 |
43 THE STRAINLIFE STRATEGY | 98 |
44 STATISTICAL CONSIDERATIONS | 104 |
45 NONMETALLIC MATERIALS AND COMPOSITES | 108 |
Fatigue crack growth | 114 |
53 VARIABLE AMPLITUDE LOADING | 131 |
54 SMALL CRACKS | 151 |
55 STRESS CONCENTRATION EFFECTS | 164 |
56 MIXED MODE STATES | 167 |
72 STRAIN CONCENTRATION DUE TO EDGE AND INTERNAL DELAMINATIONS | 208 |
73 INFLUENCE OF DAMAGE ON LAMINATE STIFFNESS | 210 |
74 DELAMINATION INITIATION | 211 |
75 ON MODEDEPENDENT CYCLIC DELAMINATION GROWTH LAWS | 217 |
76 DESIGN IMPLICATIONS | 223 |
Biomaterials | 225 |
82 A PROSTHETIC HEART VALVE | 226 |
83 PROSTHETIC HIP JOINTS | 227 |
PRODUCT LIABILITY | 232 |
SELECTED STRESS INTENSITY FACTOR FORMULAE | 236 |
Problems | 238 |
References | 247 |
Index | 283 |
Common terms and phrases
aircraft aluminum alloy American Society analysis applied asperity ASTM ASTM STP Beevers brittle ceramics closure obstruction components Composite Materials compressive loading corrosion crack extension crack growth rate crack initiation crack length crack propagation crack tip creep curve cycles to failure cyclic loading cyclic plastic zone damage tolerance delamination dependent described determined developed distribution effects elastic elastic modulus Engineering equation experimental fatigue behavior fatigue crack growth fatigue tests fiber finite element analysis fracture mechanics fracture toughness increases interfaces introduced Journal Kmax laminate linear elastic loading conditions mean stress metal matrix composites methods mixed mode notch number of cycles observed occur overload parameter plane strain polymeric predicted problem procedure properties range ratio reinforced residual stresses shear shown in Fig small cracks Society for Testing specimens strain strength stress concentration stress intensity factor structural temperature tensile tensile stress Testing and Materials values variable amplitude loading
Popular passages
Page 249 - Beevers, CJ (ed.) 1980 The measurement of crack length and shape during fracture and fatigue.
Page 252 - Caslini, M., Zanotti, C, and O'Brien, TK, "Study of Matrix Cracking and Delamination in Glass/Epoxy Laminates," Journal of Composites Technology and Research, Vol.
Page 258 - Hashin. Z. and Rotem, A., 1973, "A Fatigue Failure Criterion for Fiber Reinforced Materials,
References to this book
Finite Element Modelling of Composite Materials and Structures F L Matthews No preview available - 2000 |
Finite Element Modelling of Composite Materials and Structures F. L. Matthews No preview available - 2000 |