a Normal to the crack plane (indicated as vertical displacements v), and b horizontal to the crack plane (horizontal displacements u) for the inclined crack in a single-crystal oriented in [001] orientation. c The vertical crack tip displacements for the single crystal oriented in [123] ...
With the semi-brittle material, bonding across the cleavage plane is closer to its critical state than bonding across the most stressed dislocation slip plane (Fig. 3). This equates with the difference in atomic potential energy between atoms b and c in Fig. 4. With the ductile material, ...
(b) The fracture load as a function of tip radius. Applying the fracture criterion to impact indentation: The crack nucleation map. In Fig. 5, we apply the fracture criterion obtained in Fig. 4 to the indentation simulations with different indenter geometries. In Fig. 5(a), we...
(b) The fracture load as a function of tip radius. Applying the fracture criterion to impact indentation: The crack nucleation map. In Fig. 5, we apply the fracture criterion obtained in Fig. 4 to the indentation simulations with different indenter geometries. In Fig. 5(a), we...
Additional support for this is obtained from a consideration of the elastic stress fields which form around the indent, where it has previously been demonstrated that the contribution of densification to indentation-induced deformation leads to a reduction of tensile stresses in the surface plane, ...
A single camera is used, as only in-plane deformations of the beam are of interest. The crack widths are measured using DIC and visual observation using a microscope. The results of the DIC have a crack width measurement resolution of 0.025 mm and the crack widths are verified by comparing...
The anisotropy of the crystals plays an important role, which is reflected by the fact that the relationship HVSQX > HVSQ⊥ holds, i.e., the hardness obtained from indentation experiments perpendicular to the X-plane (SQX) is higher than that to the Z-plane (SQ⊥) [38]. Regarding the ...
On the Crack Extension in Plates Under Plane Loading and Transverse Shear. J. Basic Eng. 1963, 85, 519–525. [Google Scholar] [CrossRef] Meng, Y.X.; Gao, H.; Yan, Y.Z.; Gao, L.L. Effects of phase difference and stress ratio on biaxial tension–tension fatigue crack propagation ...
where x and y denote the coordinates of the points under the image coordinate system. The main point O1 is the intersection of the optical axis and the image plane. Xc, Yc, and Zc denote the coordinates of the points under the camera coordinate system. The main point Oc is in the optic...