Results 251 to 260 of about 9,188 (302)
Some of the next articles are maybe not open access.
International Journal of Fracture, 1995
Progressive radial cracking of a clamped plate subjected to crack-face closure is studied. The material behavior is assumed to be elastic-brittle. The cracks are assumed to be relatively long in the sense that the three-dimensional contact problem can be described via a statically equivalent two-dimensional idealization.
J. P. Dempsey +2 more
openaire +1 more source
Progressive radial cracking of a clamped plate subjected to crack-face closure is studied. The material behavior is assumed to be elastic-brittle. The cracks are assumed to be relatively long in the sense that the three-dimensional contact problem can be described via a statically equivalent two-dimensional idealization.
J. P. Dempsey +2 more
openaire +1 more source
Fatigue & Fracture of Engineering Materials & Structures, 1996
Abstract—A Strip‐Yield Model for Notched Components (SYMNC) model which employs Newman's method of simulating crack closure and determining the effective stress‐intensity factor is used to predict the fatigue crack growth behavior of non‐stress relieved and stress relieved welded joints.
C. Y. Hou, F. v. Lawrence
openaire +1 more source
Abstract—A Strip‐Yield Model for Notched Components (SYMNC) model which employs Newman's method of simulating crack closure and determining the effective stress‐intensity factor is used to predict the fatigue crack growth behavior of non‐stress relieved and stress relieved welded joints.
C. Y. Hou, F. v. Lawrence
openaire +1 more source
Engineering Fracture Mechanics, 1996
The current status of the knowledge about the fatigue crack closure effect is briefly reviewed. A nodel for fatigue crack closure process is proposed, which involves an elastic wedge placed into an elastic crack to simulate the obstruction of crack closure due to asperities or oxide debris.
D.L. Chen, B. Weiss, R. Stickler
openaire +1 more source
The current status of the knowledge about the fatigue crack closure effect is briefly reviewed. A nodel for fatigue crack closure process is proposed, which involves an elastic wedge placed into an elastic crack to simulate the obstruction of crack closure due to asperities or oxide debris.
D.L. Chen, B. Weiss, R. Stickler
openaire +1 more source
Analysis of Closure in Fatigue Crack Growth
Journal of Applied Mechanics, 1978A theoretical study is made of the implications of a Dugdale-Barenblatt model for fatigue crack growth under steady cyclic loading. Residual plastic stretches and the effects of crack closure on crack opening and closing loads are calculated by complex function methods for a range of loading ratios.
Budiansky, B., Hutchinson, J. W.
openaire +1 more source
Measurability of Crack Closure
1999Crack closure can be measured either with compliance techniques or by means of crack propagation methods. Each of these methods has its own specific limitation. We have performed simulations to show that the results of the measurements with compliance technique near the tip depend strongly on the position of the displacement gages and ...
R Pippan, FO Riemelmoser, C Bichler
openaire +1 more source
Effect of crack closure on gear crack propagation
International Journal of Fatigue, 2001Computational and experimental studies were performed in order to investigate the propagation of cracking in a spur gear tooth. The stress intensity factors were numerically calculated by the definition of weight functions and by finite element analysis.
GUAGLIANO, MARIO, VERGANI, LAURA MARIA
openaire +3 more sources
Engineering Fracture Mechanics, 1991
Abstract A loading stage for the scanning electron microscope has been used in conjunction with the stereoimaging technique to study fatigue crack closure for a center notched specimen of an aluminum alloy. The results are compared to similar measurements from single edge notched specimens of the same alloy and other materials.
openaire +1 more source
Abstract A loading stage for the scanning electron microscope has been used in conjunction with the stereoimaging technique to study fatigue crack closure for a center notched specimen of an aluminum alloy. The results are compared to similar measurements from single edge notched specimens of the same alloy and other materials.
openaire +1 more source
Crack tip closure and environmental crack propagation
Engineering Fracture Mechanics, 1975Abstract Crack propagation rate, da/dN, and crack tip closure stress, σcc, in part-through crack fatigue specimens of aluminum alloys are drastically affected by gaseous environments. The present studies indicate that the crack closure reflects the influence of the environment on the plastic deformation at the crack tip, and, therefore, on the crack ...
O. Buck, J.D. Frandsen, H.L. Marcus
openaire +1 more source
The relevance of crack closure to fatigue crack propagation
Materials Science and Engineering, 1974Using the d.c. and a.c. resistance techniques it was established that for predominantly plane strain conditions, fatigue crack closure in various steels occurred only when the stress intensity conditions were reduced to below the minimum stress intensity level (KM I N) for the previous fatigue cycles.
T.C. Lindley, C.E. Richards
openaire +1 more source
Influence of crack closure in the case of an angled crack
Engineering Fracture Mechanics, 1986Abstract This paper describes the application of super element technique to the study of crack closure phenomena in the case of an inclined crack. The influence of closure load on closure length and mode I and mode II stress intensity factors for an inclined crack are studied in detail.
S. Thiagarajan, R.S. Alwar
openaire +1 more source