Results 261 to 270 of about 3,593 (294)

Critical crack tip opening displacement of different strength concrete

Journal of Central South University, 2011
Critical crack tip opening displacement (CTOD(subscript c)) of concrete using experimental and analytical evaluation with seven different compressive strengths ranging from 30 up to 150 MPa was studied based on two types of fracture tests: three-point bending (TPB) and wedge splitting (WS).
Bing Wang, Xiu-fang Zhang, Jian-guo Dai, Shi-lang Xu   +3 more
openaire   +1 more source

Crack Tip Opening Displacement in atomistic modeling of fracture of silicon

Computational Materials Science, 2011
Abstract We analyze the fracture of single crystal silicon simulated by atomistic modeling with ReaxFF first principles based reactive force field. The simulations are performed at three temperatures: 500 K, 800 K and 1200 K, capturing both brittle and ductile behavior for the selected crystallographic orientation with (1 0 0) as the fracture plane ...
Christian Thaulow, Stella V. Schieffer, Inga R. Vatne, Dipanjan Sen, Erling Østby   +4 more
openaire   +1 more source

Relationship between notch tip strain and crack-opening displacement

Materials Science and Engineering, 1980
Abstract A model is proposed for strain associated with smooth blunting of a notch under mode I type of loading. The model yields a relationship between notch tip strain and crack-opening displacement. The predictions of the model were found to be in good agreement with Robinsons and Tetelman's experimental data on A533-B steel.
R.C. Bates, A.T. Santhanam
openaire   +1 more source

Crack-tip blunting and crack-opening displacement under large-scale yielding

Metal Science, 1976
AbstractThe recrystallization method, a newly developed technique for measuring plastic strain, makes it possible to observe directly the intense strain region near the crack tip. The shape of this zone and the plastic strain distribution obtained by this method are similar to the theoretical findings of Rice and Johnson.
openaire   +1 more source

Comparison of methods for crack tip opening displacement toughness determination

Journal of Materials Science, 1991
The crack tip opening displacement (CTOD) initiation toughness has been obtained by different methods in Cr and Cr-Mo steels at 30, 200 and 400 ‡C. The crack tip stretching and grain deformation has been investigated by scanning electron microscope and optical microscopic studies and by microhardness measurements.
R. K. Pandey, A. N. Kumar, P. Sundaram
openaire   +1 more source

On the influence of specimen geometry on the critical crack-tip-opening displacement

Engineering Fracture Mechanics, 1989
Abstract Critical values of the crack-tip-opening displacement, CODi, are determined on CTI-specimens having different thicknesses and ligament lengths. CODi is determined using the method of stereophotogrammetry with the scanning-electron microscope. The influence of specimen geometry on CODi is studied.
O. Kolednik, P. Kutles̆a
openaire   +1 more source

A Comparison of Crack-Tip Opening Displacement Ductile Instability Analyses

1989
This paper presents the results of a large test program undertaken to study ductile fracture in aluminum weldments. The main body of the experimental program consisted of a series of wide-plate tests on 10-mm-thick parent material and welded aluminum alloy center-cracked panels.
JR Gordon, SJ Garwood
openaire   +1 more source

Unified constraint parameter based on crack-tip opening displacement

Engineering Fracture Mechanics, 2018
Abstract To develop new fracture assessment methodology to incorporate both in-plane and out-of-plane constraints, it is desirable to develop unified constraint parameters convenient for engineering calculation and application. In this work, a new unified constraint parameter Ad based on crack-tip opening displacement (CTOD) was proposed, and the ...
J.Y. Xu, G.Z. Wang, F.Z. Xuan, S.T. Tu
openaire   +1 more source

Crack tip opening displacement in relatively high toughness materials

Engineering Fracture Mechanics, 1991
Abstract A theoretical model of crack tip opening displacement is presented which is based on a concept of rigid body rotation near the crack tip. The proposed relation is used to obtain the crack tip opening displacement in three point bend specimens of low strength high toughness materials.
openaire   +1 more source

Crack tip opening displacement of a Dugdale crack in a three-phase cylindrical model composite material

International Journal of Engineering Science, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hoh, H. J., Xiao, Z. M., Luo, J.
openaire   +1 more source