Journal ArticleDOI
Residual-stress determination through combined use of holographic interferometry and blind-hole drilling
Drew V. Nelson,J. T. McCrickerd +1 more
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In this article, the authors used holographic interferometry to determine in-plane radial displacements due to release of residual stresses by hole drilling, analogous to relations used in the conventional strain-rosette technique.Abstract:
Holographic interferometry is used to determine in-plane radial displacements due to release of residual stresses by hole drilling. A method is derived for relating radial displacements measured in three directions of illumination to the state of residual stress, analogous to relations used in the conventional strain-rosette technique. Residual stress is produced by an interference fit of two circular tubes. Agreement between stress determined holographically with a computed value and with that determined by the conventional technique is good. Advantages of the holographic technique in overcoming various shortcomings of the conventional technique are discussed. A modification of the holographic technique involving data collection in only two directions of illumination is described.read more
Citations
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Laser surface-contouring and spline data-smoothing for residual stress measurement
TL;DR: In this paper, a contour method using laser scanning is proposed to measure surface contours for application to residual stress measurement, where a part is cut in two with a flat cut, and the part deforms by relaxation of the residual stresses.
Journal ArticleDOI
Residual stress measurement using the hole drilling method and laser speckle interferometry: Part 1
M. Steinzig,E. Ponslet +1 more
Journal ArticleDOI
Advances in Hole-Drilling Residual Stress Measurements
TL;DR: In this article, the authors describe recent advances in both the measurement and analytical areas, and indicate some promising directions for future developments in the area of residual stress measurement and its application in analytical analysis.
Journal ArticleDOI
Full-field calculation of hole drilling residual stresses from electronic speckle pattern interferometry data
Gary S. Schajer,M. Steinzig +1 more
TL;DR: In this paper, a mathematical method for calculating residual stresses from hole drilling electronic speckle pattern interferometry (ESPI) data, independent of rigid-body motions, is proposed.
The measurement of residual stresses by the incremental hole drilling technique.
P Grant,J D Lord,P S Whitehead +2 more
TL;DR: This guide draws together some background to the technique, discusses the current standards and highlights a number of key issues crucial to obtaining a good measurement, based on input from UK experts and some of the findings from a recent UK hole drilling residual stress intercomparison exercise.
References
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Journal ArticleDOI
Hole-drilling strain-gage method of measuring residual stresses
Norbert Rendler,Irwin Vigness +1 more
TL;DR: The hole-drilling strain-gage method of measuring residual stresses in elastic materials can be termed semidestructive if holes of very small diameters are used as discussed by the authors, which permits the magnitudes and principal directions of residual stresses at the hole location to be determined.
Journal ArticleDOI
Improved Moiré Interferometry and Applications in Fracture Mechanics, Residual Stress and Damaged Composites
Journal ArticleDOI
Residual stress by blind-hole method with off-center hole
J. P. Sandifer,G. E. Bowie +1 more
TL;DR: In this article, the blind-hole drilling technique is applied to measurement of residual stresses in areas too restricted for drilling guides, by using a set of equations derived to account for off-center drilled holes.
Journal ArticleDOI
The alignment error of the hole-drilling method
TL;DR: In this paper, the stress-strain relationship for the eccentric hole case has been derived and expressed in terms of the off-center distance and the polar angle, and the alignment error is studied and demonstrated by two examples, namely, a uniaxial-stress field and a hydrostatic-stress field.
Journal ArticleDOI
Measurement of residual stresses by the hole-drilling method: Influences of transverse sensitivity of the gages and relieved-strain coefficients
TL;DR: In this article, the error due to the use of improper relieved-strain coefficients from rigorous relationships for calculation of residual stresses has been compared with the same part of the error from nonrigorous relationships.
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