microcrack


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microcrack

A linear defect in the calcified layer of articular cartilage.
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As loading stress continues to increase, microcracks start to propagate and intersect with each other, forming macroscale cracks.
Stage I is the compaction stage, in which the microcracks and micropores contained in the concrete are gradually compacted and close under the joint action of confining pressure and axial pressure.
The third one is that particles move in opposite directions for microcrack generation.
Conventional cells with different microcrack lengths were selected via EL and divided into 5 groups with 10 cells each group according to the microcrack length: A (0 cm), B (0-0.9 cm), C (1-2 cm), D (4-5 cm), and E (9-10 cm).
When the loading mudstone reaches the conditions of damage nucleation and growth, some new microholes and microcracks begin to initiate and propagate.
Dual Boundary Element Method for 3D Microcrack and Microvoid Interaction.
It should be noted that the original microcrack closure stages are difficult to illustrate in the new statistical damage constitutive model.
The experimental investigations on the unit with plane and plane-radial cracks of different opening were carried out for research of the cause of the nonlinear effects manifestation during fluids motion including water in the microcrack. [7].
The number of microcrack was increased from about half of yield stress and the rapid increase of microcrack caused the yield in compression test of DS [Mg.sub.85][Y.sub.6][Zn.sub.9].
The measurement of microcrack area was not done for cyclic loading because the change of modulus of elasticity of concrete with increase of cycles.
In particular, A=Y, the axial stiffness; R = nY/[[rho].sub.m][pi][l.sub.m] and M = mY[[rho].sub.m]/[pi][l.sub.m], where [[rho].sub.m] is the microcrack density per unit length, and n and m are constants depending on the number and arrangement of the slits in the module.
The bioengineers have developed lightweight prototype piezoelectric ultrasound sensors capable of detecting a microcrack up to five inches away.