will be the natural seepage channel for oil and gas, so as to enhance oil and gas recovery.
Keywords: Anodic aluminum oxide, cracks
, characterization, tubular membrane, nanostructures
CNewman  studied the life of metallic materials using small crack
theory for various materials and analyzed the micro structure cracks
for the aluminum alloy.
For instance, horizontal cracks
run across the grain of the wood and develop just before the tree fails, making them very difficult to detect.
To simulate the actual behavior of reinforced concrete structures precisely, cracks
needs to be inserted in the finite element model (FEM).
It is generally believed that under the thermal shock/fatigue load, thermal cracks
would nucleate on the surface of the material and cause thermal fatigue failure through crack
Numerical results for natural frequencies of both isotropic and orthotropic plates with internal cracks
were presented using subdomain method by Lee et al.
Residents in Barangay Cantuyoc in Jagna, Bohol province, are living in fear after cracks
on the ground appeared following heavy rain that also triggered landslides.
Of course not all cracks
will have a significant effect on the fabric of the property.
These changes produce a new structural arrangement on zinc substrate and are usually revealed by the generation of cracks
in the zinc layer.
This ultrasonic ILI tool detects and sizes axial cracks
-like features such as fatigue cracks
, stress corrosion cracking (SCC) or weld cracks
The researchers reviewed the latest understanding in fatigue crack
propagation and life prediction with special emphasis on the influences of short cracks
and the uncertainty of multiscale flaws and microstructure constituents.