Experimental displacement and strain fields are presented for a generalized plane stress tensile specimen consisting of commercially pure titanium diffusion bonded to 6Al-4V titanium. Plastic flow initiates at the intersection of the interface with the specimen free edge. Further deformation results in concentrated shear bands emanating from the interface at both free edges. Interactions of the interface-free edge shear bands force a state of plane strain in the center of the specimen. These interface constraint effects have practical relevance on the testing of joined metals with property mismatch.

Issue Section:
Technical Papers
Topics:
Displacement, Strips, Tension, Deformation, Shear (Mechanics), Titanium, Diffusion (Physics), Metals, Plane strain, Stress, Testing
1.
Blum, J. A., and Shih, F., 1989, “The Singular Behavior of a Bimaterial Strip,” Proceedings, 7th ASCE Engineering Mechanics Conf., R. A. Heller and M. P. Sing, ed., ASCE, NY, p. 72.
2.
Bogy
D. B.
,
1971
, “
Two Edge Bonded Elastic Wedges of Different Materials and Wedge Angles Under Surface Tractions
,”
ASME JOURNAL OF APPLIED MECHANICS
, Vol.
35
, pp.
377
–
386
.
3.
Burke
M. A.
, and
Nix
W. D.
,
1979
, “
A Numerical Study of Necking in the Plane Tension Test
,”
International Journal Solids and Structures
, Vol.
15
, pp.
379
–
393
.
4.
Deason, V. A., and Ward, M. B., 1989, “A Compact Portable Diffraction Moire Interferometer,” Proceedings, Laser Interferometry, Quantitative Analysis of Interferograms, Vol. 1162, Society for Photo Optical Instrumentation Engineers, Bellingham, WA, pp. 26–35.
5.
Hart
E. W.
,
1955
, “
A Uniaxial Strain Model for a Lu¨der’s Band
,”
Acta Metallurgica
, Vol.
3
,
Mar
. pp.
146
–
49
.
6.
Hill
R.
, and
Hutchinson
J. W.
,
1975
, “
Bifurcation Phenomena in the Plane Tension Test
,”
Journal of the Mechanics and Physics of Solids
, Vol.
23
, pp.
239
–
264
.
7.
Kishimoto
K.
,
Sugita
T.
,
Noyomi
M.
, and
Koizumi
T.
,
1993
, “
Elastic-Plastic Finite Element Analysis on Bonding Edge of Dissimilar Materials
,”
Japan Society of Mechanical Engineers International Journal, Ser. A
, Vol.
36
, No.
4
, pp.
382
–
389
.
8.
Livnat
A.
, and
Post
D.
,
1985
, “
The Grating Equations for Moire Interferometry and Their Identity to Equations of Geometrical Moire
,”
Experimental Mechanics
, Vol.
25
, No.
4
, pp.
360
–
366
.
9.
Nadai, A., 1950, Theory of Flow and Fracture of Solids, Vol. 1, 2nd ed., McGraw-Hill, New York, pp. 289–327.
10.
Onat
E. T.
, and
Prager
W.
,
1954
, “
Necking of a Tension Specimen in Plastic Flow
,”
Journal of Applied Physics
, Vol.
25
, No.
4
, Apr., pp.
491
–
93
.
11.
Ortiz
M.
,
Leroy
Y.
, and
Needleman
A.
,
1987
, “
A Finite Element Method for Localized Failure Analysis
,”
Computer Methods in Applied Mechanics
, Vol.
61
, pp.
189
–
214
.
12.
Post, D., 1987, “Moire Interferometry,” Handbook on Experimental Mechanics, A. Kobayashi, ed., McGraw-Hill, New York, Chapter 7.
13.
Storen
S.
, and
Rice
J. R.
,
1975
, “
Localized Necking in Thin Sheets
,”
Journal of the Mechanics and Physics of Solids
, Vol.
23
, pp.
421
–
41
.
This content is only available via PDF.
Copyright © 1995
 by The American Society of Mechanical Engineers
You do not currently have access to this content.