Journal ArticleDOI
Residual stress. Part 1 – Measurement techniques
TLDR
In this paper, the effect of residual stresses on fatigue lifetimes and structural integrity are first summarised, followed by the definition and measurement of residual stress, which are characterised according to the characteristic length scale over which they self-equilibrate.Abstract:
Residual stress is that which remains in a body that is stationary and at equilibrium with its surroundings. It can be very detrimental to the performance of a material or the life of a component. Alternatively, beneficial residual stresses can be introduced deliberately. Residual stresses are more difficult to predict than the in-service stresses on which they superimpose. For this reason, it is important to have reliable methods for the measurement of these stresses and to understand the level of information they can provide. In this paper, which is the first part of a two part overview, the effect of residual stresses on fatigue lifetimes and structural integrity are first summarised, followed by the definition and measurement of residual stresses. Different types of stress are characterised according to the characteristic length scale over which they self-equilibrate. By comparing this length to the gauge volume of each technique, the capability of a range of techniques is assessed. In the sec...read more
Citations
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Journal ArticleDOI
Evolution of Residual Stress Based on Curvature Coupling in Multi-Roll Levelling
TL;DR: In this article, a method for eliminating residual stress by multi-roll levelling based on curvature coupling is discussed, and an evaluation criterion and an analysis model are proposed to investigate the evolution of the residual stress in multilayer levelling considering the curvatures coupling between bendings.
Journal ArticleDOI
Investigation on micro-residual stress distribution near hole using nanoindentation: Effect of drilling speed:
TL;DR: In this article, residual stresses are induced in the material during manufacturing operations, which can considerably affect the fatigue performance and the lifespan of a mechanical work piece and the nature, magnitude, and magnitude of the residual stresses.
Dissertation
Development of processing strategies for the additive layer manufacture of aerospace components in Inconel 718.
TL;DR: In this paper, the melting response of alloys to user defined processing parameters was investigated and how the response affects microstructure and mechanical properties of individual additive layer manufacturing (ALM) systems.
Book ChapterDOI
Residual stress in laser powder bed fusion
Lameck Mugwagwa,Ina Yadroitsava,Nkutwane Washington Makoana,Nkutwane Washington Makoana,Igor Yadroitsev +4 more
TL;DR: In this paper, a detailed analysis of the residual stress control techniques that can be applied in laser powder bed fusion (L-PBF) is presented, and recommendations for effective evaluation and appropriate selection of residual stress management techniques are outlined.
Journal ArticleDOI
Dependence of magnetic permeability on residual stresses in alloyed steels
TL;DR: In this article, a method for the monitoring of residual stress distribution in steels has been developed based on non-destructive surface magnetic permeability measurements, which has shown that the residual stress determined by the magnetic method was in good agreement with the diffraction results.
References
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Book
Elements of X-ray diffraction
TL;DR: In this article, the authors present a chemical analysis of X-ray diffraction by Xray Spectrometry and phase-diagram Determination of single crystal structures and phase diagrams.
Book
Encyclopedia of Materials: Science and Technology
K. H. Jürgen Buschow,Robert W. Cahn,Merton C. Flemings,Bernhard Ilschner,Edward J. Kramer,Subhash Mahajan +5 more
TL;DR: In this article, the fundamental core theory of functional properties and properties of materials are discussed. But the authors focus on the physical properties of thin films and artificial multilayers, rather than the structural properties of the materials themselves.
Journal ArticleDOI
Residual stress. Part 2 – Nature and origins
TL;DR: In this paper, the authors examine the nature and origins of residual stresses across a range of scales, from the long range residual stress fields in engineering components and welded structures, through the interphase stresses present in composites and coatings, to the microscale interactions of phase transformations with local stresses.
Book
Handbook of Measurement of Residual Stresses
TL;DR: In this paper, the authors describe a sequence of residual stress measurements made to determine a Handbook on Stiffness & Damping in Mechanical Design, which can be used to compare different methods of measuring residual stress.