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
Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing
TL;DR: Ball burnishing of laser-cut C45 steel parts reduced the surface roughness parameters Sa and Sz by up to 60% in relation to the values obtained after laser cutting, resulting in an increase in the absolute value of skewness Ssk.
Book ChapterDOI
Advanced High Strength Bainitic Steels
TL;DR: The automotive industry is one of the greatest markets for materials produced in the steel sector, but it is also the most dynamic, due mainly to governmental requirements that change according to newer, stricter environmental and security policies as mentioned in this paper.
Journal Article
Comparison of neutron diffraction measurements of residual sress of steel butt welds with current fitness-for-purpose assessments
Anna Paradowska,John William Howard Price,Trevor R Finlayson,Ronald B. Rogge,Ronald L. Donaberger,Raafat N Ibrahim +5 more
Journal ArticleDOI
Comparison between single and multilayered a-SiC:H coatings prepared by multi-frequency PACVD: Mechanical properties
TL;DR: In this article, the authors compared scratch properties of single and multilayered a-SiC:H layers including up to 125 asymmetric periods of soft/hard coatings.
Journal ArticleDOI
Effect of multiple ultrasonic nanocrystal surface modification on surface integrity and wear property of DZ2 axle steel
TL;DR: In this paper, ultrasonic nanocrystal surface modification (UNSM) treatments with different numbers of rolling passes are employed to enhance the surface integrity and the wear resistance of DZ2 axle steel for high-speed trains.
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.