Fatigue Crack Propagation in Metals and Alloys (PDF)

1 Introduction 2 Basic Concepts of Metal Fatigue and Fracture in the Engineering Design Process Historical Background Metal Fatigue, Crack Propagation, and Life Prediction - A Brief Introduction Basic Concepts of Technical Fracture Mechanics 3 Experimental Approaches to Fatigue Mechanical Materials Testing Crack-Propagation Measurements Microstructural Analysis - Quantitative Analysis of Grain and Phase Boundaries Reproducibility of Experimental Studies Systematic Failure Analysis 4 Physical Metallurgy of the Deformation Behavior of Metals and Alloys Elastic Deformation Plastic Deformation by Dislocation Movement Activation of Slip Planes in Single- and Polycrystalline Materials Cyclic Deformation of Metallic Materials 5 Initiation of Microcracks Crack Initiation - Definition and Significance Microstructural Aspects of Crack Initiation Crack Initiation by Elastic Anisotropy Inter- and Transcrystalline Crack Initiation Microcracks and the Existence of a Fatigue Limit Crack Initiation in Inhomogeneous Materials - Metallic Foams 6 Microstructural Features of Crack Propagation The Abnormal Behavior of Microstructurally Short Cracks Transcrystalline Crack Propagation Significance of Crack-Closure Effects Short- and Long Cracks: The Transition from Mode II to Mode I Crack Propagation Intercrystalline Crack Propagation at Elevated Temperatures - The Mechanism of Dynamic Embrittlement 7 Crack Modeling and Life-Prediction Concepts Accounting for the Material's Microstructure Overview: Short-Fatigue-Crack Models The Model of Navarro and de los Rios Numerical Modeling of Short Crack Propagation by Means of the Boundary-Element Method Modeling Concepts for the Diffusion-Controlled Intercrystalline Crack Propagation at High Temperatures 8 Implications and Potential of Microstructure-Based Material Concepts

Ulrich Krupp is Senior Engineer at the Institute of Materials Technology of Siegen University, Germany, and responsible for the research files fatigue and high-temperature corrosion of metals and alloys. He completed his Ph.D. in mechanical engineering there, and also obtained his lecturing qualification (habilitation) in 2004. He spent one year at the Department of Materials Science and Engineering at the University of Pennsylvania, Philadelphia, USA, in 2002 as a Feodor Lynen fellow of the Alexander von Humboldt foundation. Hitherto, he has published over 110 scientific contributions in peer-reviewed scientific journals and conference proceedings. In 2005 his work was awarded by the Masing award of Deutsche Gesellschaft für Materialkunde.

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