With the incremental hole-drilling method, it is possible to evaluate residual stress variations with depth, acquiring strain values for each step by strain gages. These data can be processed by the integral method. Usually strain gages are not spaced equidistant from the hole center nor arranged in the radial direction, due to practical difficulties in drilling a centered hole. In this study we present a development of the integral method for evaluating stress variations with depth in the specimen for eccentric blind hole cases. The results can be extended and adopted for use with a non-conventional strain gage array.

Issue Section:
Research Papers
Topics:
Drilling, Stress, Strain gages
1.
Mathar, J., “Determination of Initial Stress by Measuring the Deformations Around Drilled Holes,” Trans. ASME, 1934, pp. 249–254.
2.
Rendier
N. J.
, and
Vigness
I.
, “
Hole-Drilling Strain Gage Method of Measuring Residual Stress
,”
Experimental Mechanics
, Vol.
6
,
1966
, pp.
577
–
586
.
3.
“Measurement of Residual Stress by the Blind Hole Drilling Method,” Tech. note TN503, Measurement Group, Wendell, NC, 1988.
4.
“Standard Test Method for Determining Residual Stresses by the Hole-Drilling Strain-Gage Method,” ASTM Standard E 837–95.
5.
Flaman
M. T.
, and
Manning
B. H.
, “
Determination of Residual Stress Variation with Depth by the Hole-Drilling Method
,”
Experimental Mechanics
, Vol.
25
,
1985
, pp.
205
–
207
.
6.
Schajer
G. S.
, “
Measurement of Non-Uniform Residual Stress Using the Hole-Drilling Method. Part II—Practical Application of the Integral Method
,”
ASME JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY
, Vol.
110
,
1988
, pp.
344
–
349
.
7.
Flaman, M. T., Mills, B. E., and Boag, M., “Analysis of Stress-Variation-with-Depth Measurement Procedures for the Center-Hole Method of Residual Stress Measurement,” Experimental Techniques, June 1987, pp. 35–37.
8.
Lari
A. Niku
,
Lu
J.
, and
Flavenot
J. F.
, “
Measurement of Residual Stress Distribution by the Incremental Hole—Drilling Method
,”
Experimental Mechanics
, Vol.
25
,
1985
, pp.
175
–
185
.
9.
Ajovalasit
A.
, “
Measurement of Residual Stresses by the Hole-Drilling Method: Influence of Hole Eccentricity
,”
Journal of Strain Analysis
, Vol.
14
,
1979
, pp.
171
–
178
.
10.
Wang
J. Y.
, “
Refined Analysis of the Relieved Strain Coefficients for the Off-Center Hole-Drilling Case
,”
Experimental Mechanics
, Vol.
30
,
1990
, pp.
367
–
371
.
11.
Sandifer
J. P.
, and
Bowie
G. E.
, “
Residual Stress by Blind-Hole Method with Off-Center Hole
,”
Experimental Mechanics
, Vol.
18
,
1978
, pp.
173
–
179
.
12.
Kabiri
M.
, “
Toward More Accurate Residual-Stress Measurement by the Hole-Drilling Method: Analysis of Relieved-Strain Coefficients
,”
Experimental Mechanics
, Vol.
26
,
1986
, pp.
14
–
21
.
This content is only available via PDF.
Copyright © 1997
 by The American Society of Mechanical Engineers
You do not currently have access to this content.