The fatigue cracks are observed in asphalt surfaces much more than ruts. This paper deals with the influence of carbon nano-tube on the fatigue life of asphalt mixtures. These samples are made up of the slabs cut by the asphalt cutting saw. Fatigue beams contain 0, 0.3, 0.6, 0.9, 1.2, and 1.5 percent of Carbon Nano-tube. The fatigue experiment was conducted using a 4-point semi-sinusoidal loadi...

Mechanics of CNT-reinforced nano-cellular PMMA nanocomposites are investigated using coarse-grained molecular dynamics simulations. Firstly, static uniaxial stretching of bulk PMMA polymer is simulated and the results are compared with literature. Then, nano-cellular foams with different relative densities are constructed and subjected to static uniaxial stretching and obtained stress-strain cu...

Nomenclature CR,CI = empirical constants C = speed of sound, m/s D = Van-Driest damping function E = specific total energy f = frequency, Hz G = level-set variable hf,i = heat of formation of species i at reference condition k = turbulent kinetic energy lF = laminar flame thickness, m l = inner-layer flame thickness, m n = unit vector normal to flame front p = pressure Pr = Prandtl number q = r...

Evaluation of the pistillate flower abscission (PFA) potential of UC-67-13 and UC-67-11 was continued at two sites. At a high PFA site UC-67-13 PFA was only moderately lower than Serr for the third year. UC-67-11 demonstrated low PFA potential for a seconq year at this site. Higher PFA potential of UC-67-13 than UC-67 -11 was also found at a second site for a second year. No further evaluation ...

, The behavior of an energetic solid subjected to shear is modelled. Data from torsional split-Hopkinson bar (TSHB) experiments are first reduced to calibrate a constitutive model for stress, accounting for the effects of strain and strain rate hardening, in an inert simulant, Mock 900-20, of the high explosive LX-14. This stress model is employed in a transient one dimensional model which incl...

The three aftershock sequences that occurred in Al Hoceima, Morocco, May 1994 (Mw 6.0), February 2004 6.4) and January 2016 6.3) were stochastically modeled to investigate their temporal energetic behavior. A form of the restricted trigger model known as epidemic type sequence (RETAS) was used for analysis selected series. best-determined fit models each differ based on Akaike information crite...

Since 1890, the San Jacinto fault in Southern California has been the site of eleven earthquakes of moderate magnitude (6 < M < 7) and tens of thousands of small earthquakes, but none of large magnitude1,2. This activity contrasts sharply with the seismic quiescence of the nearby southern San Andreas fault. Although this fault slips at a rate higher than that associated with the San Jacinto fau...

This work exploits the high accuracy of mixed 3?field u/e/p formulation to address materially non-linear inelastic problems including isochoric deformations. Motivated by strain-driven format several constitutive equations used in FEA, u/s/p is reinterpreted, selecting deviatoric strains as primary variables, together with displacements and pressure field. The complemented suitable for Solid Fl...

Debonding of films attached to substrates as well as fibers embedded in matrices typically involves initiation, steady-state propagation and a final transient as the debond converges on an edge or another debond. The emphasis in this paper is on the mechanics of the transient. Under most circumstances, a converging debond crack is characterized by an energy release rate that approaches zero, ca...