FRACTAL ANALYSIS OF DEFORMATION CURVES OF FIBER-REINFORCED FINE-GRAINED CONCRETES UNDER COMPRESSION

Fine-Grained Analysis of Problems on Curves

We provide conditional lower bounds on two problems on polygonal curves. First, we generalize a recent result on the (discrete) Fréchet distance to k curves. Specifically, we show that, assuming the Strong Exponential Time Hypothesis, the Fréchet distance between k polygonal curves in the plane with n edges cannot be computed in O(nk−ε) time, for any ε > 0. Our second construction shows that un...

Effect of Adding Nanoclay on the Mechanical Behaviour of Fine-grained Soil Reinforced with Polypropylene Fibers

In this study the performance of clay nano-particles on the soil reinforced with Polypropylene fibers (PP-fiber) has been investigated. Also a series of investigations concerning the effect of random orientation of fibers on the engineering behaviour of soil were conducted. Soil mixtures were modified with varying percentages of nanoclay and Fibers. Unconfined compressive strength (UCS), Compac...

Superplasticity of a fine-grained Mg–1.5 wt% Gd alloy after severe plastic deformation

The strain rate sensitivity (SRS) of Mg–1.5 wt% Gd processed by conventional extrusion and 2 passes of simple shear extrusion (SSE) was investigated by shear punch testing. Shear punch tests were conducted at initial shear strain rates in the range of 0.003–0.3 s-1 and at temperatures in the range of 573–773 K. A fine-grained microstructure with an average grain size of about 2.5 µm, obtained a...

Damage Detection of Carbon Fiber-reinforced Concrete Under Bending Test

Free Vibration Analysis of Continuously Graded Fiber Reinforced Truncated Conical Shell Via Third-Order Shear Deformation Theory

This paper deals with free vibration analysis of continuously graded fiber reinforced (CGFR) truncated conical shell based on third-order shear deformation theory (TSDT), by developing special power-law distributions. The orthotropic (CGFR) truncated conical shell are clamped and simply supported at the both ends. It is assumed to have a smooth variation of fibers volume fraction in the thickne...