Igor Tsukrov

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  • Igor Tsukrov, Judson C. DeCew, Kenneth Baldwin, Regina Campbell-Malone, Michael J. Moore
  • 2009
In an effort to better understand the mechanics of ship-whale collision and to reduce the associated mortality of the critically endangered North Atlantic right whale, a comprehensive biomechanical study has been conducted by the Woods Hole Oceanographic Institution and the University of New Hampshire. The goal of the study is to develop a numerical(More)
This paper deals with the micromechanical modeling of carbon/carbon composites (C/C) fabricated by chemical vapor infiltration (CVI) of carbon fiber pre-form. The technology of CVI involves synthesis of pyrolytic carbon (PyroC) particles from hydrocarbon gas and their deposition on carbon fibers. The process results in formation of a porous pyrolytic carbon(More)
This paper provides explicit analytical expressions for displacement and stress fields in a multilayered composite cylinder with cylindrically orthotropic layers subjected to homogeneous boundary conditions. The solutions are derived in the assumption of perfect bonding between layers. The components of displacement, strain and stress are expressed in terms(More)
A multiscale modeling approach is utilized to evaluate the contribution of irregularly shaped threedimensional pores to the overall elastic properties of carbon/carbon composites. The degree of anisotropy of a carbon matrix depends on nanotexture, which is defined by manufacturing conditions. Elastic properties of the matrix are predicted assuming a Fisher(More)
Cyprus’ offshore aquaculture industry has promising prospects taking into account that Cyprus is an island. Its production trend is increasing overtaking bigger countries such Greece and Italy. However, current mooring systems seem to be under-performing acting as obstacles for its future development. Furthermore, shallow coastal waters scarcity due to(More)
The three dimensional distribution of fibers can be determined by micro computer tomographic (μCT) analysis. Fig. 1a shows an example of the fiber preform with laminate microstructure: The sequence of layers with unidirectional (UD) fiber orientation (red UD1 and green UD2 layers) separated by quite thin layers of the felt. The entire composite is needled(More)
Carbon/carbon composites produced by chemical vapour infiltration consist of carbon fibers embedded in a matrix of pyrolytic carbon with anisotropic mechanical properties. Microscopic studies show that the production process facilitates formation of a matrix consisting of cylindrically shaped pyrolytic carbon layers. The matrix layers may have different(More)
Pyrolytic carbon (PyC) can be used as matrix material for carbon-carbon (C/C) composites which exhibit an attractive combination of high fracture toughness and high-strength to weight ratio. This unique combination leads to their major application as aircraft brake linings in a variety of extreme aerospace refractory materials. C/C composite materials with(More)
A conserved phase-field model is proposed to investigate the effect of interfacial energy on the morphological evolution of the pyrolytic carbon deposit in chemical vapor deposition. The equilibrium geometry of carbon deposit islands is analytically predicted, of which the contact angle was controlled through the boundary conditions of the phasefield(More)