Text icon  TALAT Lecture 2401: Fatigue Behaviour and Analysis

 
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Description: This lecture explains why, when and where fatigue problems may arise and the special significance to aluminium as structural material; it helps to understand the effects of material and loading parameters on fatigue; to appreciate the statistical nature of fatigue and its importance in data analysis, evaluation and use; it shows how to estimate fatigue life under service conditions of time-dependent, variable amplitude loading; how to estimate stresses acting in notches and welds with conceptual approaches other than nominal stress; it provides qualitative and quantitative information on the classification of welded details and allow for more sophisticated design procedures. Background in materials engineering, design and fatigue is required.
Keywords: design • fatigue • fatigue cracks • susceptibility • cyclic loading • crack growth • crack propagation rate • endurance limit • predictive theories • damage accumulation theories • Manson-Coffin law • crack growth laws • ideal cumulative damage theory • fatigue data analysis • middle-cycle fatigue range • high-cycle fatigue range • fatigue diagrams • linear P-S-N curves • non-linear P-S-N curves • service behaviour • time dependent loads • load spectrum • cycle counting • rain-flow cycle counting method • service behaviour fatigue test • analytical life estimation • damage accumulation • Palmgren-Miner linear damage accumulation hypothesis • strain • fatigue life • notch theory • strain-life diagram • weld imperfections • static strength • fatigue strength • cracks • porosity • inclusions • oxides • lack of penetration • weld shape • lack of fusion • geometric misalignment • arc strike • spatter • post-weld mechanical imperfections
Categories: Science approaches > Deformation & failure > Fatigue
Materials > Metals & alloys > Aluminium & alloys
Created by: Dimitris Kosteas, Technische Universität München, Germany
European Aluminium Association, Brussels
Published by: European Aluminium Association, Brussels
License: This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales).
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Date created: 01 January 1994
Date added: 25 September 2009
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Resource ID: 2169