These include a viscous instability, non-uniform propagation, and local extinction of the front.
An experimental methodology is described whereby interactions between cracks and microstructural barriers, and the consequent non-uniform propagation rates are observed without the assistance of any microscopy technique.
It is found that the handle wafer leads to uniform crack propagation and higher uniformity in the thickness of the final SOI systems, in comparison with conventional techniques to produce SOI substrates, and prohibits the blistering and flaking failure of an H-implanted wafer.
Uniform strain propagation was possible up to a maximum area strain of 20% with this system.
This can be perceived from the gas saturation profiles more directly, as shown in Fig. 42, which clearly illustrates a much more uniform gas propagation front.
Due to the isotropic characteristics of mechanical properties, the HVOF-sprayed coating made from the nanostructured feedstock exhibited uniform crack propagation under Vickers indentation, i.e., four cracks emanating from the corners of the Vickers indentation impression.
Each panel shows Vm distributions at time instances between 12 and 42 ms following successive paced beats at BCL of 170 ms. In both cases, the first beat shown is successful, inducing 1 1 conduction and uniform wavefront propagation away from the pacing sites within the model.
When the temperature of the volatile flame around particles was uniform, the flame propagation velocities of CO2/O2 combustion and N2/O2 combustion were the same.
