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Researchers' Work from Washington State University Focuses on Composite Materials

February 25, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Research findings on Composite Materials are discussed in a new report. According to news reporting originating in Pullman, Washington, by VerticalNews journalists, research stated, "A nonlinear analysis is presented for impact response of carbon nanotube-reinforced composite (CNTRC) structures under thermal conditions. Two plate configurations (i.e., single-layer and sandwich plates) are considered, and the nanotube reinforcement is either uniformly-distributed or functionally-graded in the plate thickness direction."

The news reporters obtained a quote from the research from Washington State University, "The material properties of nanotube reinforced composites are estimated using micromechanical models. The equations of motion are based on a higher-order shear deformation theory with a von Karman-type of kinematic nonlinearity, and the thermal effects are included by considering the nanotube reinforced composites as temperature-dependent. The equations of motion are solved with a two-step perturbation technique, and the initial stresses caused by either the thermal or in-plane edge loads as in-plane boundary conditions are introduced. The influences of material property gradient, volume fraction distribution, temperature change, initial stress, initial velocity of the impactor, and core-to-face sheet thickness ratio on impact response of plate structures are discussed."

According to the news reporters, the research concluded: "The analysis presented can help better understand the nonlinear impact response of functionally-graded materials and facilitate design and optimization of nanocomposite structures against impact and under thermal and other environments."

For more information on this research see: Nonlinear low-velocity impact analysis of temperature-dependent nanotube-reinforced composite plates. Composite Structures, 2014;108():423-434. Composite Structures can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier -; Composite Structures -

Our news correspondents report that additional information may be obtained by contacting Z.X. Wang, Washington State University, Dept. of Civil & Environm Engn, Pullman, WA 99164, United States. Additional authors for this research include J.F. Xu and P.Z. Qiao.

Keywords for this news article include: Pullman, Washington, United States, Composite Materials, North and Central America

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Source: Journal of Technology

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