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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Corrosion performance of additively manufactured stainless steel parts: A review
TL;DR: In this article, the performance of additively manufactured stainless steel parts made by LPBF and DLD is analyzed in comparison to their conventional counterparts. But, there are still controversies around some important aspects such as passive film structure, residual stress, post heat treatment processes, and grain size distribution and their impact on corrosion performance.
Journal ArticleDOI
The effect of surface plastic deformation produced by shot peening on corrosion behavior of a low-alloy steel
TL;DR: In this article, the effects of shot peening process on the electrochemical properties of a low-alloy steel were examined in the present study, where microstructural, morphological and surface properties of samples were analyzed by XRD, SEM and 3D surface profilometer.
Journal ArticleDOI
Eigenstrain analysis of residual strains and stresses
TL;DR: In this paper, the authors propose a residual stress-admissible (RSadmissible) field, which is a divergence-free stress field that satisfies stress equilibrium conditions everywhere in the object to the greatest possible level of detail.
Journal ArticleDOI
A perspective on residual stresses in welding
Amitava De,Tarasankar Debroy +1 more
TL;DR: In this article, the authors present recent research on calculation, measurement and alleviation of residual stresses in welding, including non-uniform simultaneous heating and cooling, local variation in shrinkage because of variable cooling rates in different regions of the weld, and strains associated with metallurgical phase transformations.
Journal ArticleDOI
The effect of hatch angle rotation on parts manufactured using selective laser melting
TL;DR: In this paper, the authors investigated the effect of hatch rotation angles on the properties of the parts of a selective laser melting (SLM) scan and found that the hatch rotation angle had little effect on the density, top surface roughness and strength of parts.
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.