The asymmetric deformation of glass-to-metal seals is an important defect that would lead to the failure pressure boundary in nuclear reactors. In this research, efficient approach measure and prevent potential was proposed based on spectrum characterization fiber Bragg grating (FBG) sensors. induced from small-size large-gradient nonuniform strain sealing materials; as a result, it could be mo...

This paper is concerned with the prediction of vibro-acoustic behavior rib-stiffened panels treated multiple layers porous materials. The acoustically are assumed to be uniform and infinitely long in one direction (the longitudinal direction) but cross-section can have an arbitrary often complicated shape. Although two-and-half dimensional structural finite element method (2.5D FEM) acoustic bo...

Helicopter gearbox support strut is one of the main research objects in field vibration and noise control helicopter cabins. Aiming to further widen attenuation range traditional Bragg periodic struts, a novel type Local resonance (LR)/Bragg coupling with graded parameters as well reverse design method proposed. Combined spectral element (SEM) transfer matrix (TMM), analytical expression transf...

This paper aims to theoretically study the concept of a photonic salinity and temperature sensor according deformed one-dimensional structure. The fundamental capability proposed is studied. Simultaneously we search optimize thickness structure get maximum sensitivity. constructed by alternating layers TiO2 fused-silica P times. In middle structure, cavity containing seawater inserted measure i...

This paper presents an architecture and protocol in support of seamless mobility for future IP Radio Access Networks (IPRANs). It encompasses a novel approach for seamless handoff and proactive relocation of IP roaming state. The latter establishes a generic substrate for proactive state relocation of different context classes relating to the state of IP connectivity for a mobile node (MN). To ...

Abstract: The current research is aimed to investigate the alterations of its opticalfeatures of novel adjustable three color narrowband optical filters, which comprise ofblue, green and red light. A narrowband adjustable transmission optical filters accordingto dielectric- ferroelectric heterostructures photonic structures are designed using thetransfer-matrix method (T...

To identify cracks in a structure, an inverse analysis has been performed using the static and dynamic response of structure. The accuracy is highly dependent on form objective function choice optimization method. Generally, method searching solution by gradient adopted. However, for crack problem interested this study, it known to have drawback that search strongly depends initial value settin...

Integration of functional components such as excitation light source, micro-fluidic chip, optical filters, and complementary metal–oxide–semiconductor (CMOS) sensors on a single photonics chip for fluorescence detection by advanced semiconductor process, is future technology rapid responding, high accuracy, handheld point-of-care diagnosis protocol in field application daily life. We designed C...

Locally resonant (LR) metamaterial structures possess bandgaps in which wave propagation is significantly attenuated. In this paper, we discuss flexural an LR beam subjected to a global axial force and multiple vertical elastic supports. An array of inerter-based dynamic vibration absorbers (IDVAs) was periodically attached the beam. The band structure prestressed multisupported first derived u...

We study the three-dimensional Anderson model of localization with anisotropic hopping, i.e., weakly coupled chains and weakly coupled planes. In our extensive numerical study we identify and characterize the metal-insulator transition by means of the transfer-matrix method and energy level statistics. Using high accuracy data for large system sizes we estimate the critical exponent as ν = 1.6 ...