T. S. Srivatsan & M. Ashraf Imam 
Fatigue of Materials II 
Advances and Emergences in Understanding

The Second International Symposium of Fatigue of Materials:Advances and Emergences in Understanding is a five-sessionsymposium held in conjunction with the Materials Science and Technology Conference 2012 (MS&T 2012) at Pittsburgh, Pennsylvania, during October 7-11, 2012. The abstracts that weresubmitted for presentation at this symposium cover a diverse rangeof topics. We have made an attempt to group these papers intosessions that focus on closely-related topics. However, as can beexpected, many of the papers could fit into more than one session.In the ensuing discussion, we provide a cohesive, complete andcompelling overview of the symposium as well as a summary of theabstracts that were submitted.

Session 1(Overview 1) and Session 2(Overview II) contain papers that

(i) Review the current state of knowledge both related andrelevant to the subject of fatigue behavior of materials, and

(ii) New, innovative, and emerging techniques for experimentalevaluation of the fatigue behavior.

In concurrence the papers attempt to analyze the data foraspects relevant to design and simultaneously predicting the usefullife of components and structures. Session 3 (Aerospace Materials I) and Session 4 (Aerospace Materials II) focus on advanced materials that are used inperformance-critical applications in the aerospace and automotiveindustries, such as the alloys of titanium, nickel, aluminum, andmagnesium. Session 5 is a collection of papers relating toother materials of engineering interest, such as iron andsteel, polymer, rubber, and even composites. In the summarypresented below, the session number and paper number are identifiedby S and P.

Topics related to the influence of both processing and theenvironment are covered in papers presented in all the sessions ofthis symposium, and are briefly summarized here as a group withadditional discussion included in the individual sessions.

Spis treści

Preface ix

Symposium Organizers xi

Session Chairs xv

Symposium on the Fatigue of Materials II: Advances and Emergences in Understanding

Overview I

Fundamentals of Fatigue Crack Initiation and Propagation: Some Thoughts 3
C. Pande

In-situ Three Dimensional (3D) X-Ray Synchrotron Tomography of Corrosion Fatigue in A17075 Alloy 17
J. Williams, X. Xiao, F. De Carlo, N. Chawla, and S. Singh

Variable Amplitude Fatigue 27
N. Ranganathan, D. Joly, and R. Leroy

High Frequency Vibration Based Fatigue Testing of Developmental Alloys 39
C. Holycross, R. Srinivasan, T. George, S. Tamirisakandala, and S.Russ

Overview II

Dwell Fatigue Design Criteria 49
T. Goswami

Probabalistic Risk Assessment of a Turbine Disk 71
T. Goswami, J. Carter, M. Thomas, and T. Fecke

Simulating Fatigue Cracks in Healthy Beam Models for Improved Identification 87
P. Cooley, J. Slater, and O. Shiryayev

Advanced Materials I

Stress-Corrosion Cracking and Fatigue Crack Growth Behavior of Ti-6A1-4V Plates Consolidated from Low Cost Powders 105
M. Imam, P. Pao, and R. Bayles

Advanced Materials II

The High Cycle Fatigue, Damage Initiation, Damage Propagationand Growth and Final Fracture Behavior of the Aluminum Alloy 2024119
T. Srivatsan, S. Vasudevan, and K. Manigandan

Fractographic Observations on the Mechanism of Fatigue Crack Growth in Aluminium Alloys 139
R. Alderliesten, J. Schijve, and M. Krkoska

Fatigue Predictions of Various Joints of Magnesium Alloys153
H. Kang, K. Kari, A. Getti, A. Khosrovaneh, X. Su, L. Zhang, and Y.Lee

Fatigue Behavior of AM60B Subjected to Variable Amplitude Loading 169
H. Kang, K. Kari, A. Khosrovaneh, R. Nayaki, X. Su, L. Zhang, and Y. Lee

Other Materials

Rubber Fatigue – The Intrinsic Intricacies 181
N. Ranganathan, F. Lacroix, S. Meo, J. Poisson, and G. Berton

Mechanistic Approach towards Fatigue Initiation and Damage Propagation in Fibre Metal Laminates & Hybrid Materials193
R. Alderliesten

Influence of Austenite Stability on Steel Low Cycle Fatigue Response 201
G. Lehnhoff, and K. Findley

The High Cycle Fatigue and Final Fracture Behavior of Alloy Steel 9310 for Use in Performance-Sensitive Applications 211
T. Srivatsan, K. Manigandan, T. Quick, and A. Freborg

Ultrasonic Corrosion Fatigue Behavior of High Strength Austenitic Stainless Steels 233
R. Ebara, Y. Yamaguchi, D. Kanei, and Y. Yamamoto

Influence of Microstructural Features on the Propagation of Microstructurally Short Fatigue Cracks in Structural Steels243
M. Sharaf, J. Lian, N. Vajragupta, S. Münstermann, W. Bleck, B. Schmaling, A. Ma, and A. Hartmaier

Author Index 251

Subject Index 253

O autorze

T. S. Srivatsan is the Professor of Materials Science and Engineering in the Department of Mechanical Engineering at The University of Akron. He received his graduate degrees [Masterof Science in Aerospace Engineering (M.S. 1981) and Doctor of Philosophy in Mechanical Engineering (Ph.D. 1984)] from Georgia Institute of Technology.

M. Ashraf Imam is a Research Metallurgist at Naval Research Laboratory (NRL) pursuing basic research on materialstructure-property relationship. He also holds the position of Adjunct Professor of Materials Science at George Washington University in Washington, DC. Dr. Imam obtained a D.Sc.degree in Materials Science from George Washington University andan M.S. from Carnegie-Mellon University in the field of Metallurgyand Materials Science.

R. Srinivasan is the Professor in the Mechanicaland Materials Engineering Department, is the Director of the Materials Science and Engineering Program at Wright State University, Dayton, Ohio. He received his Ph D from the State University of New York, Stony Brook, and his MS from the Universityof Florida, Gainesville, both in Materials Science and Engineering, after completing his bachelors degree from the Indian Institute of Technology, Madras.