In this article we solve the tiling problem for hyperbolic and Euclidean regular polygons whose edges are notched with matching bumps and nicks.

An investigation into the mixed mode fracture of steel fiber reinforced concrete (SFRC)beams with one percent volume fraction of steel fiber is presented. A series of notched beams withdifferent notch depths and locations are tested under three-point bending. The test results for apparentfracture toughness, crack trajectories, and fracture energy are presented. The crack paths for SFRCand plain...

This paper presents an E-ring shaped printed monopole antenna for UWB applications with dual notched bands performance. In order to generate single frequency band notch function, we applied a U-ring shaped monopole antenna, and by inserting a rectangular ring in the centre of it an E-ring shaped radiating patch created and a dual band-notch function can be achieved. The measured bandwidth of th...

Generally, fatigue failure in an element happens at the notch on a surface where the stress level rises because of the stress concentration effect. The present paper investigates the effect of a notch on the fatigue life of the HSLA100 (­high strength low alloy) steel which is widely applicable in the marine industry. Tensile test was conducted on specimens and mechanical properties were obtain...

The main characteristics of the cohesive (or fictitious) crack model, which is now generally accepted as the best simple fracture model for concrete, are (aside from tensile strength) the fracture energies GF and Gf corresponding to the areas under the complete softening stress-separation curve and under the initial tangent of this curve. Although these are two independent fracture characterist...

The aim of this study is to evaluate the effect processing temperature on interfacial failure glass/Elium® 150 composites. vacuum assisted resin transfer molding technique (VARTM) was used manufacture composites at three different process temperatures: room (24℃), 50℃ and 80℃. interlaminar shear strength, mode I II fracture toughness laminates were determined by performing short beam (SBS), dou...

The main goal of this work is to obtain a reliable value the fracture toughness single grains tungsten carbide (WC). It attempted by testing microcantilever and micropillar samples shaped out, means focused ion beam milling, individual WC particles embedded within WC-Co cemented grade. Experimental included use nanoindenter for inducing bending splitting, as well sampling with basal prismatic o...

OBJECTIVE To examine the predictive value of clinical examination, laboratory tests and Doppler ultrasound examination in systemic lupus erythematosus (SLE) and/or antiphospholipid syndrome (APS) pregnancies. METHODS A prospective study of 116 pregnancies followed in a single tertiary referral centre. Outcomes analysed were fetal/neonatal death and adverse pregnancy outcome. Univariate analys...