Fatigue cracks commonly occur for in-service engineering structures. The main parameter fatigue crack is the stress intensity factor (SIF). SIF an indicator of growth and remaining life a structure. Nonetheless, problem was raised when determining since could not be presented in physical phenomena. Thus, technique required to predict range SIF. Maximum minimum bounds help estimate life. This pa...

We propose a new sensing device based on all-optical nano-objects placed in suspended periodic array. demonstrate that the intensity-based mechanism can measure environment refractive index change of order 1.8×10?6, which is close to record efficiencies plasmonic devices.

A FGM layer sandwiched between two isotropic layers weakened by several interface cracks under antiplane loading is studied. This paper examines the modelling of cracks by distribution of strain nuclei along crack lines. In this investigation, the Volterra-type screw dislocation employed between FGM and an elastic layer. To solve the dislocation problem, the complex Fourier transform is applied...