This paper deals with the dynamic characterisation of plate structures elliptical orthotropic stiffness properties, using an equivalent thin theory a wave fitting approach. The method consists in projecting experimentally determined transverse displacement field on analytical Green’s function based Hankel’s functions. error between projected and measured fields is then minimized, varying charac...

In this study, a quantitative investigation of the microstructure and composition of field-caught marine Gasterosteus aculeatus (threespine stickleback) armor is presented, which provides useful phylogenetic information and insights into biomechanical function. Micro-computed tomography (microCT) was employed to create full three-dimensional images of the dorsal spines and basal plate, lateral ...

The propagation of Lamb-like waves in sandwich plates made of anisotropic and viscoelastic material layers is studied. A semi-analytical model is described and used for predicting the dispersion curves (phase velocity, energy velocity, and complex wave-number) and the through-thickness distribution fields (displacement, stress, and energy flow). Guided modes propagating along a test-sandwich pl...

Abstract-The fundamental solutions and the boundary element method for obtaining numerical solutions of nonlinear Reissner plates on an elastic foundation are presented in the paper. The derivation of the fundamental solutions is mainly based on two of Hu’s functions and the resolution method of differential operator. An incremental form of the boundary integral equations is suggested to achiev...

We firstly describe the influence of the phospholipid (PL) composition of bilayer lipid membrane on their electrical properties: (i) the more unsaturations in the tail, the earlier the BLM breakdown and (ii) the bulkier the head group, the less stable the membrane. Secondly, we design and fabricate novel devices that couple such electrical characterization to optical investigation and that enab...

Abstract Sandwich panels have been of great interest in recent years due to the tendency engineers replace heavy and rigid structures with light that allow good energy absorption deformation values. One areas needs these is cabin design used on construction equipment. These cabins are environments where there a danger various objects may hit structure their roof, thus endangering health or life...

Lightweight blades with high strength are urgently needed in practical rotor engineering. Sandwich structures porous core and reinforced surfaces commonly applied to achieve these mechanical performances. Moreover, large aspect ratios established by the elastic plate models theory. This paper studies vibration of a rotating sandwich pre-twist setting angle graphene nanoplatelets (GPLs). Its is ...

In this paper, an approach is proposed and presented to tackle the vibro-acoustic properties of finite clamped composite sandwich plates with foam core. Composite are treated as being orthotropic apparent bending stiffnesses calculated for two principal directions. The plate estimated by element calculation on beam elements cut from considered plates. sound transmission loss predicted using Kir...

Abstract A multilayer constrained alumina ceramic metal composite armor is designed in this paper. The effect of interlayer steel thickness on penetration process tungsten alloy piercing projectile studied by the test and finite element simulation. results show that case same layer ceramics equal surface density, thicker plate away from impact is, better support to sandwich is. It beneficial ma...

Class separation of methylated free bile acids from bile acids conjugated with taurine and methylglycine was accomplished using a solvent system of 2,2,4-trimethylpentane-absolute ethanol 10:1 (v/v). By developing a silica thin-layer plate two times with solvent in a Brinkmann sandwich tank, the difficult resolution between methyl cholate and methyl glycolithocholate was achieved. Evidence is p...