The size and viscosity effects are noticeable at the micro-/nano scale. In present work, strain gradient viscoelastic solution of mode-III crack in an infinite quasi-brittle advanced material is proposed based on viscoelasticity theory using Wiener–Hopf method. solutions to gradient-dependent problem obtained directly by correspondence principle between elasticity Maxwell’s standard linear soli...

Abstract A spectral image correlation method considering the effect of displacement gradients upon analysis in Fourier frequency domain is proposed. criterion studied and established to match target subset with reference domain. An iterative algorithm for calculating strain then derived, Hessian matrix remains unchanged within an process. During formation matrix, greyscale can be calculated usi...

A method is presented for selecting the subset of identified structural vibration modes to be used in finite element model correlation for structural damage detection. The method is based on a ranking of the modes using measured modal strain energy, and is a function of only the measured modal parameters. It is shown that a mode selection strategy based on maximum modal strain energy produces m...