In this study, we used several molecular dynamic models to simulate the pull-out process of a carbon nanotube (CNT)
that is assumed to be chemically connected to a carbon fiber, and to calculate the CNTs' geometry variation,
displacement, energy and stress during this process. In the simulation, the CNTs' elongation and necking phenomena
have been noted prior to the movement of the CNT's end embedded in resin. The simulation yields a CNT's plastic
constitutive model in the pull-out process. The fracture resistance capability of a chemically connected CNT is then
discussed. In the simulation of shearing, the prediction of the CNTs' capability of shear resistance has been conducted.
Finally, by comparing the experiment result with the simulation, we predict the amido link break before the CNT
pull-out in the shearing test.
The photo-induced strain in transparent lead lanthanum zirconate titanate (PLZT) materials is due to a process of
superposition of photovoltaic and converse piezoelectric effects. The photovoltaic effect in PLZT materials is observed
only in the direction of spontaneous polarization of ferroelectric materials. In this paper, electrical and mechanical
performance of PLZT ceramics polarized in 0-1 or 0-3 direction are investigated, and PLZT actuators and sensors with
the 0-3 polarization are studied. For multilayer PLZT actuators, presented also are the formulas for the calculation of
energy release rates due to debonding.
Conference Committee Involvement (1)
Second International Conference on Smart Materials and Nanotechnology in Engineering
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