Multistage constant-amplitude-cyclic (MCAC) loading experiments were conducted on Tibet interbedded skarn to investigate and characterize fatigue mechanical behavior of the tested rock. Rock volumetric deformation, stiffness change, damage evolution analyzed along with macroscopic failure morphology. The experimental results demonstrated that deformation was influenced by interbed structure. pr...

Instabilities of a thin viscous film flowing down a uniformly heated plane are investigated in this study. The heating generates a surface tension gradient that induces thermocapillary stresses on the free surface. Thus, the film is not only influenced by gravity and mean surface tension but also the thermocapillary force is acting on the free surface. Moreover, the heat transfer at the free su...

In this work, we propose design parameters for optimized high-density optical cables to control the spatial-mode dispersion (SMD) of randomly coupled multi-core fibers (MCF). The analytical results our proposed cable demonstrated controllability bending and twisting implemented by means tension that is applied a bundled fiber while keeping sufficient reliability. An characterization showed appr...

This article introduces stiff and tough biocomposites with in-situ polymerisation of poly (methyl methacrylate) ductile non-dry flax fibres. According to the results, composites processed fibres (preconditioned at 50% RH) had comparable quasi-static in-plane shear strength but 42% higher elongation failure toughness than oven-dried Interestingly, perforation energy flax–PMMA cross-ply subjected...

The objective of this paper is to develop an outer sheath for flexible endoscopic manipulators. This sheath can switch two states including flexible and rigid, and make a rigid curved path for inserting manipulators. The flexible mode can be curved into a required shape. The rigid mode can hold the shape of the sheath, and then keep the path for instruments. Through the managed path, the flexib...

The majority of fracture mechanics studies on the toughness of bone have been performed under tensile loading. However, it has recently been shown that the toughness of human cortical bone in the transverse (breaking) orientation is actually much lower in shear (mode II) than in tension (mode I); a fact that is physiologically relevant as in vivo bone is invariably loaded multiaxially. Since bo...

A thin metallic film deposited on a compliant polymeric substrate begins to wrinkle under compression induced in curing process and afterwards cooling of the system. The wrinkle mode depends upon the thin film elasticity, thickness, compressive strain, as well as mechanical properties of the compliant substrate. This paper presents a simple model to study the modulation of the wrinkle mode of t...