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
More filters
Journal ArticleDOI
Overview of residual stress in MEMS structures: Its origin, measurement, and control
Shankar Dutta,Akhilesh Pandey +1 more
TL;DR: In this article, the authors reviewed the origins of residual stress in MEMS fabrication processes and different techniques involved in testing and characterization of residual stresses are reviewed, and a brief overview of the possible route to minimize the residual stresses is also presented.
Journal ArticleDOI
A simplified method of predicting stresses in surfaced steel rods
TL;DR: In this article, the dependence of stresses on strain was assumed on the basis of tension curves taking into account temperature, and a simplified method was proposed to determine the longitudinal stresses in surfaced rods.
Journal ArticleDOI
Forming property and broaching error prediction of a forged nickel-based superalloy turbine disc
Yongjie Ma,Guang Cheng +1 more
TL;DR: In this article, the residual stress derived from the multi-stage forging process of aeroengine turbine disc has been studied, and two different methods, the layer removal and the finite element method (FEM), have been used to analyze the prevailing residual stress in the forged GH4169 (similar to Inconel 718 alloy) nickel-based superalloy turbine disc.
Journal ArticleDOI
Effect of Grain Refinement on the Mechanical Properties of a Nickel- and Manganese-Free High Nitrogen Austenitic Stainless Steel
TL;DR: In this paper, a two-stage heat treatment process was used to refine the grains of nickel and manganese-free Fe-23Cr-2.4Mo-1.2N high nitrogen austenitic stainless steels.
Journal ArticleDOI
FEM Simulation and Verification of Brazing SiC Ceramic with Novel Zr-Cu Filler Metal.
TL;DR: The results show that the simulated residual stress of the joint is mainly axial compressive stress, and the shear strength of the brazed SiC ceramic joint that achieves the highest with 2 °C /min is about 72 MPa, and then decreases with the increase of cooling rate.
References
More filters
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.