Thermoplastic braided composite tubular beams were manufactured using commingled hybrid yarn with braid angles 30°, 45° and 60° tested in static three-point flexure. Two principal deformation modes observed during the flexural loading: global flexure localised crush. The extent of each mode occurring three angle variants was measured a linear deflectometer as well 3D digital image correlation. ...

This paper presents an experimental study and theoretical analyses on the monotonic and fatigue performance in bending of a polyvinyl alcohol (PVA) fiber-reinforced engineered cementitious composite (ECC) overlay system. The influence of the interfacial characteristics between overlay and old concrete substrate on the overall bending performance is investigated. The experimental results show th...

A unique, all-ceramic material capable of nonbrittle fracture via crack deflection and delamination has been mechanically characterized from 25° through 1400°C. This material, fibrous monoliths, was comprised of unidirectionally aligned 250 mm diameter silicon nitride cells surrounded by 10 to 20 mm thick boron nitride cell boundaries. The average flexure strengths of fibrous monoliths were 510...

The restoration of strength and stiffness of damaged reinforced concrete beams with deficient reinforcements, through retrofitting, was experimentally and numerically studied. Retrofitting is carried out by wrapping glass fiber strips using cement-based composite binders. Six beams of size 1500mm (length) x100mm (width) x 150mm (depth) have been tested in four-point bending. Three beams are use...

OBJECTIVES The hypothesis tested was that processing, pre-cementation and cementation techniques can modify the profilometrically measured deformation of a ceramic. METHODS Three-point flexural moduli of a resin-cement were characterised following light irradiation at 430 and 180 mW cm⁻². Thirty IPS e.max Ceram discs were prepared and a reference surface produced by polishing. Discs were anne...

Introduction: The response of a planetary lithosphere to an applied load, such as a mountain or range of mountains, is regularly modeled as a plate deflecting under a mathematically defined load. The deflection caused by the load depends on the strength of the plate, which is defined by elastic parameters of the lithospheric material and by its thickness [1, 2]. A “forebulge”, where the crust w...

Flexure hinge is a critical element in positioner of nanoindentation tester. To effectively work, suitable flexure should simultaneously meet multiple objectives, including rotation axis shift, safety factor, and angular deflection. The main aim this article was to illustrate hybrid method the Taguchi method, fuzzy logic, response surface Moth-flame optimization algorithm solve design order enh...

Flexure mechanisms are widely used in precision applications. The finite support stiffness results parasitic resonance frequencies, typically with low damping, that can be detrimental for positioning performance. Moreover, these resonances may vary over the workspace moderate or large deflection. In this paper we consider a model of stroke flexure hinge requires accurate end-effector positionin...

This paper presents the use of a finite element method (FEM) to analyze shear lag effect due flexure beams with an arbitrary cross-section and homogeneous elastic material. Beams are constrained by most common types supports, such as fixed, pinned, roller. The transverse, concentrated, or distributed loads act on through center cross-section. presented FEM transforms 3D analysis phenomenon into...

The development of composite sections is great importance in structural design, with the aim reducing weight and deflection while limiting effect on section’s strength durability. This paper examines computational analysis where reinforced concrete was replaced autoclaved aerated (AAC) compression zone. first principles combined Hook’s law were adopted to find a flexure, shear, equivalent modul...