Active rigidization of a simple structure demonstrates how internal resistive heating can be applied to cause permanent physical strengthening of inflatable structures. Rigidizing a real structure brings to light the issues associated with incorporating the rigidizable resincoated tow onto a separate substrate and provides a useful example of the strength gained through effective rigidization. ...

The multi-armed bandit problem (MBP) is the problem of finding, as accurately and quickly as possible, the most profitable option from a set of options that gives stochastic rewards by referring to past experiences. Inspired by fluctuated movements of a rigid body in a tug-of-war game, we formulated a unique search algorithm that we call the ‘tug-of-war (TOW) dynamics’ for solving the MBP effic...

The investigation of several parameters during fiber push-out micromechanical tests on the interfacial shear strength (ISS) BN interphase in SiCf/SiC ceramic matrix composites (CMC) was undertaken to optimize experimental work. composites—candidate materials for jet engine components—were manufactured with varying types and interlayer thicknesses. Experimental explored included analyzing effect...

This paper addresses geometric variability of woven textiles used in composites manufacturing. Variability in tow directions and unit cell size is quantified by applying an image analysis procedure to two representative materials; a pre-impregnated carbon/epoxy satin weave textile and a commingled glass/polypropylene fabric, and the spatial autocorrelation of stochastic variables is characteriz...

Background & Aim: In this study, is done during one-year research on blue–green and green algae for antimicrobial activity in Mashhad suburb. Aqueous, ether, and methanol extracts from 44 species blue – green algae and green algae were examined for antimicrobial properties against four bacteria (tow positive gram bacteria and tow negative gram bacteria) and tow fungous. Material & Methods: Amo...

Simulations of barge-tow movement in the sub-critical range along the Illinois River near Kampsville are performed to determine the return flow (RF) characteristics for upstream and downstream bound barge-tows. Simulations are carried out using the OpenFOAM® based CFD software for six barge-tow configurations considering two-dimensional shallow water equation. The RF velocities are simulated fo...

Composite materials have been playing a major role in modern aircraft design due to their high stiffness and strength to weight ratio. While the advantages of composite structures over their metallic counterparts is significant, it is possible to improve even further on the benefits offered by traditional composites through the use of novel composite manufacturing methods. One such method is au...