© 1992

Measurement of Residual and Applied Stress Using Neutron Diffraction

  • Michael T. Hutchings
  • Aaron D. Krawitz

Part of the NATO ASI Series book series (NSSE, volume 216)

Table of contents

  1. Front Matter
    Pages i-xviii
  2. Overview

  3. Background

  4. Aspects of Fundamental Principles

    1. Front Matter
      Pages 113-113
    2. L. Pintschovius
      Pages 115-130
    3. R. A. Winholtz
      Pages 131-145
    4. T. Leffers, T. Lorentzen
      Pages 171-187
    5. L. Pintschovius
      Pages 189-203
    6. P. J. Withers
      Pages 205-222
  5. Aspects of Experimental Measurement

    1. Front Matter
      Pages 233-233
    2. P. J. Webster
      Pages 235-251

About this book


The accurate, absolute, and non-destructive measurement of residual stress fields within metallic, ceramic, and composite engineering components has been one of the major problems facing engineers for many years, and so the extension of X-ray methods to the use of neutrons represents a major advance. The technique utilizes the unique penetrating power of the neutron into most engineering materials, combined with the sensitivity of diffraction, to measure the separation of lattice planes within grains of polycrystalline engineering materials, thus providing an internal strain gauge. The strain is then converted to stress using calibrated elastic constants. It was just over ten years ago that the initial neutron diffraction measurements of residual stress were carried out, and during the ensuing decade measurements have commenced at most steady state reactors and pulsed sources around the world. So swift has been the development of the field that, in addition to fundamental scientific studies, commercial measurements have been made on industrial components for several years now. The use of neutrons is ideally suited to the determination of triaxial macrostress tensors, macrostress gradients, and microstresses in composites and multiphase alloys as well as deformed, plastically anisotropic metals and alloys. To date, it has been used to investigate welded and heat-treated industrial components, to characterize composites, to study the response of material under applied loads, to calibrate more portable methods such as ultrasonics, and to verify computer modelling calculations of residual and applied stress.


Metall X-Ray alloy composite diffraction

Editors and affiliations

  • Michael T. Hutchings
    • 1
  • Aaron D. Krawitz
    • 2
  1. 1.National Non-Destructive Testing CentreAEA Technology, B521.1, Harwell LaboratoryDidcot, OxfordshireUK
  2. 2.Department of Mechanical and Aerospace Engineering and Research Reactor Center (MURR)University of MissouriColumbiaUSA

Bibliographic information