Analysis of Residual Stress by Diffraction using Neutron and Synchrotron Radiation

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Features

  • The book discusses problems in making measurements on textured samples.
  • Summary

    While residual stress can be a problem in many industries and lead to early failure of component, it can also be introduced deliberately to improve lifetimes. Knowledge of the residual stress state in a component can be critical for quality control of surface engineering processes or vital to performing an accurate assessment of component life under fatigue loading.

    Neutron and synchrotron X-ray diffraction have emerged as leading techniques for stress analysis, as they can penetrate many millimetres or centimetres into components, allowing nondestructive measurement of the internal strains. Both methods require the use of costly facility-based equipment, but great advantages are obtained from the ability to probe the stress state deep below a specimen's surface.

    Analysis of Residual Stress by Diffraction Using Neutron and Synchrotron Radiation gives an overview of the principles of these techniques and examples of their applications to a range of materials and engineering problems. It contains 20 chapter contributed by leading international experts in residual stress analysis, who explore the theoretical basis of stress analysis by diffraction methods, the practical implementation of the methods, and examples of key applications. The applications discussed include the determination of internal stresses in weldments, in composite materials, following shot peening, and in ceramics.

    This book will be useful for engineers and scientists who work in any field where residual stresses are of importance, and for anyone involved with the application of neutron or synchrotron radiation for stress management. As the techniques become a basic component of the measurement toolkit for stress analysis, an appreciation of the practicalities and limitations of these methods in practice will be important throughout a range of engineering and scientific fields.

    Table of Contents

    SECTION 1: GENERAL APPLICATIONS OF NEUTRON AND SYNCHROTRON RADIATION TO MATERIALS RESEARCH
    The use of neutrons for materials characterization, C.H. de Novion
    The use of synchrotron radiation for materials research, C. Riekel

    SECTION 2: METHODS AND PROBLEMS IN RESIDUAL STRESS DETERMINATION BY DIFFRACTION
    Calculation of residual stress from measured strains, A. Lodini
    Characterization of macrostresses, R.A. Winholtz
    Study of Second and Third Order Stresses, J.M. Sprauel
    The effect of texture on residual stress measurement and interpretation, T.Holden
    Anisotropy of lattice strain response, T. Lorentzen

    SECTION 3: MEASUREMENT TECHNIQUES
    Neutron diffraction using a constant wavelength, L. Pintschovius
    Neutron pulsed source instrumentation, M.W. Johnson & M.R. Daymond
    Use of synchrotron X-ray radiation for stress measuremen, P.J. Withers
    The use of neutron transmission for materials analysis, H.G. Priesmeyer

    SECTION 4: AREAS OF STUDY
    Strain mapping, P.J. Webster
    Study of stress gradients using synchrotron X-ray diffraction, A. Pyzalla & W. Reimers
    Near-surface stress measurement using neutron diffraction, L. Edwards

    SECTION 5: APPLICATIONS
    Shot Peening, A. Ezeilo
    Composite Materials, M.E. Fitzpatrick
    Residual stress analysis in mono-crystals using capillary optics, W. Reimers
    Neutron residual stress measurement in welds, S. Spooner
    Materials for nuclear fusion applications, R. Coppola & C. Nardi
    Residual stresses in ceramic materials, R.I. Todd