A small metamaterial notch-antenna with band reject at 3.5 and 4.4 GHz is proposed by introducing reactance to balanced composite left-right unit cell, thus making it non-resonant the desired frequency without any change in overall size. Simulations were carried on HFSS antenna notch implemented RT\Duroid substrate. The type I II CRLH illustrate that notches GHz, VSWR > 2. Such filters suita...

Studies on the growth of small cracks have led to the observation that fatigue life of many engineering materials is primarily “crack growth” from micro-structural features, such as inclusion particles, voids, slip-bands or from manufacturing defects. This paper reviews the capabilities of a plasticity-induced crack-closure model to predict fatigue lives of metallic materials using “small-crack...

It is important for the development of hearing aids and other audio devices to estimate the frequency selectivity and compression of the auditory filter accurately. Previously, we reported a technique for estimating the compression of the auditory filter that combined data from a simultaneous notched-noise experiment and a temporal masking curve (TMC) experiment. Unfortunately, the TMC data der...

In this paper, a novel compact four-element ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna with triple band-notched characteristics is proposed. The proposed composed of four slot elements common rhombic slot, each feeding by microstrip-fed line to greatly reduce the overall size antenna. It has 34 mm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink...

Studies on the growth of small cracks have led to the observation that fatigue life of many engineering materials is primarily “crack growth” from micro-structural features, such as inclusion particles, voids, slip-bands or from manufacturing defects. This paper reviews the capabilities of a plasticity-induced crack-closure model to predict fatigue lives of metallic materials using “small-crack...

Polyamide polymers have moderate mechanical properties, excellent wear resistant properties, and solvents. However, polyamides have some disadvantages such as notch sensitivity and high water absorption. Generally, polyamides are ductile in the un notched state but they show brittle behavior in the state of notched impact. Some disadvantages of polyamides can be improved by some fillers and add...