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A direct method to evaluate hole-alignment error in residual-stress measurement

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Abstract

In this paper, a direct method based on the Sandifer and Bowie theory was derived to take hole-alignment error into account in residual-stress measurement. The principal stresses and their orientation are calculated directly from this method when the relaxed strains, hole diameter, eccentricity and orientation are known. It is more convenient to use than other iterative methods.

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Abbreviations

A,B,C,D,E,F :

dummy expressions

G,H,I,J,X,Y :

dummy expressions

C 1,C 2,C 3 :

coefficients

E′ :

modulus of elasticity

r(i) :

R j /R H

R :

distance from rosette center to gage

R i :

distance from hole center to gage

R H :

radius of drilled hole

s :

stress

S :

hole offset

α:

angle (Fig. 1)

β:

offset angle relative to gage 3

γ:

angle (Fig. 1)

θ:

angle of principal stress relative to gage 3

ε:

strain

ν:

Poisson's ratio

σ:

stress

References

  1. Redner, S., “Measurement of Residual Stress by Blind Hole Drilling Method,” Photolastic Inc., Bul. TDG 5 (May 1971).

  2. Bush, A.J. andKromer, F.J., “Simplification of the Hole Drilling Method of Residual Stress Measurement,”ISA Trans.,12 (3),249–259 (1973).

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  3. Beaney, E.M. andProcter, E., “A Critical Evaluation of the Centre Hole Technique for the Measurement of Residual Stresses,”Strain,10 (1),7–14 (1974).

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  4. Beaney, E.M., “Accurare Measurement of Residual Stress on Any Steel Using the Centre Hole Method,”Strain,12,20–29 (1976).

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  5. Procter, E. and Beaney, E.M., contribution to Ref. 6, 30–31.

  6. Bynum, J.E., “Modification to the Hole-drilling Technique of Measuring Residual Stresses for Improved Accuracy and Reproducibility,”Experimental Mechanics,21 (1),21–33 (Jan.1981).

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  7. Sandifer, J.P. andBowie, G.E., “Residual Stress by Blind-hole Method with Off-center Hole,”Experimental Mechanics,18 (5),173–179 (May1978).

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  8. Hsin Pang Wang, “The Alignment Error of the Hole-drilling Method,”Experimental Mechanics,19 (1),23–27 (Jan.1979).

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of Wollongong, P.O. Box 1144, 2500, Wollongong, N.S.W., Australia

    Anh Kiet Tieu (Lecturer)

Authors
  1. Anh Kiet Tieu
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Tieu, A.K. A direct method to evaluate hole-alignment error in residual-stress measurement. Experimental Mechanics 25, 43–47 (1985). https://doi.org/10.1007/BF02329124

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  • DOI: https://doi.org/10.1007/BF02329124

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