Advanced composite panels for seismic and vibration mitigation of existing structures

Article Abstract:

A conceptual design, fabrication and testing of advanced polymer matrix composite (PMC) infill system are discussed for seismic retrofitting of steel frames. The prefabricated multi-panel PMC infill is a prospective candidate for enhanced damping performance, simplification of the construction process, and the reduction of time and cost when used for seismic retrofitting applications.

Damping (Mechanics), Damping (Physics), Honeycomb structures, Honeycomb structures (Materials)

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Relaxation of proton conductivity and stress in proton exchange membranes under strain

Article Abstract:

An investigation of the stress relaxation and proton conductivity of Nafion 117 membrane and sulfonated poly copolymer membrane with 35% sulfonation in acid forms was performed under uniaxial loading conditions. The results revealed that when the membranes were stretched, their proton conductivities in the direction of the strain initially increased compared to the unstretched films.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Thin Film Materials, Thin films, Dielectric films, Protons, Chemical properties, Copolymers

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The thermo-viscoelastic, viscoplastic characterization of Vetrotex 324/Derakane 510A-40 through [T.sub.g]

Article Abstract:

The nonlinear, thermo-viscoelastic behavior of Vetrotex 324/Derakane 510A-40 is characterized using tensile loading of [[plusmn 45].sub.2S] laminates. Results reveal that the nonlinear viscoelastic behavior significantly contributes to structural behavior under fire loading conditions.

Analysis, Strength of materials, Strength (Materials), Viscoelasticity, Structure

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