the blending of nr and br rubber blend with n330 carbon black is studied on curing behavior and the physico-mechanical properties of a sbr rubber based tire tread compound containing n234 carbon black. the effect of sulphur and accelerator contents on different properties of rubber compound is also tested with a wide range of curing agents. partial substitution of sbr with nr shows significant ...

Precipitates are closely related to ductile damage and dynamic recrystallization (DRX) in magnesium alloys. Using molecular dynamics simulation the embedded atomic method, competition between DRX stimulated by precipitate of alloys is investigated. The effects distribution dimensions on void nucleation, dislocation emission, growth, quantitatively discussed. It found that compared system with a...

Void strengthening in crystalline materials refers to the increase in yield stress due to the impediment of dislocation motion by voids. Dislocation dynamics (DD) is a modeling method well suited to capture the physics, length scales, and time scales associated with void strengthening. However, previous DD simulation of dislocation–void interactions have been unable to accurately account for th...

The concept of active cyber defense has appeared in the literature in recent years. However, there are no mathematical models for characterizing the effectiveness of active cyber defense. In this paper, we fill the void by proposing a novel Markov process model that is native to the interaction between cyber attack and active cyber defense. Unfortunately, the native Markov process model cannot ...

Stress magnification in thin ligaments between small and large cylindrical voids is obtained by matching the inner field approximation by beam theory to the outer rigid-body field in the bulk of the material. A void between two larger voids is modeled as a large hole within a strip of straight edges (boundaries of the holes with infinite radii of curvature). Both stretching and bending types of...

The effect of edge dislocations, impinging on grain boundary in fcc Fe near a preexisting void the volume this void, was studied using MD simulation. It found that virtually unlimited growth via mechanism is possible under certain conditions. To best our knowledge first atomistic simulation study, demonstrating feasibility mechanism.

A model for the theoretical description of KIRKENDALL voiding is presented based on vacancy diffusion and plastic deformation of spherical voids. We start with a phenomenological explanation of the KIRKENDALL phenomenon and discuss its consequences on microelectronic reliability. After that a constitutive model for void growth is introduced, which, for instances, can be used in order to predict...

Manufacturing enterprises are being forced into greater collaboration with customers and suppliers in order to produce quality products in smaller batches, shorter lead times, and with greater variety. Consequently, the design-for-manufacturing task must be conducted in these virtual and distributed enterprises across traditional organizational boundaries. This paper proposes the use of standar...