Geometrical imperfection, which is generally a result of manufacturing process and service conditions, plays crucial role in load-bearing capacity shell structures. This study presents numerical on knockdown factors cylindrical shells as torsional Mode-I type geometric imperfections under compressive loads. The deformation patterns obtained from liner bifurcation analysis (LBA) for shape are us...

North American composites including laminated veneer lumber, oriented strandboard, and medium density fiberboard were treated by vapor boron technology and subsequently tested in static bending. Tensile properties were also determined for the two composite boards. The study was designed as 3 x 2 factorial with three treatment levels and two mill locations for each composite type. In general, mi...

Many women use panty liners between menstrual periods. The aim of this study was to investigate whether the use of such products might influence the vulva skin. Twelve healthy women were studied on four occasions with three different product constructions and on one occasion without products. Temperature, surface wetness and surface pH were measured on vulva skin. Mean skin temperature when the...

We describe an application of the BOXES learning algorithm of Michie and Chambers (1968) to a large-scale, real-world problem, namely, learning to control a steel mill. By applying BOXES to a model of a skinpass mill (a type of steel mill), we find that the BOXES algorithm can be made to produce a robust controller relatively quickly. Various aspects of the BOXES algorithm are adapted for the t...

BACKGROUND AND AIM Thermal discomfort often affects prosthesis wearers and could be addressed by increasing liner thermal conductivity. This note explores a liner made from thermally conductive silicone and two additional alternative liner designs. TECHNIQUE Thermally conductive silicone was used to create a conductive liner and a hybrid liner. Additionally, one with open elements was made. T...

The effects of particle size uniformity and mill type used to grind corn were determined in three experiments. In Exp. 1, 120 pigs (47.8 kg initial BW) were used. Treatments were 1) a 40:60 blend of coarsely rolled (in a roller mill) and finely ground (in a hammermill) corn with a large standard deviation (sgw) of particle size (sgw of 2.7), 2) hammermilled corn with an sgw of 2.3, and 3) rolle...

This paper presents a study about the buckling behavior of thin stainless-steel lining (SSL) for trenchless repair urban water supply networks under negative pressure. The critical pressure and displacement (p–δ) curves, temperature changing hoop axial strain monitoring section changes with system (p–ε) action different diameters, wall thickness ventilation modes were obtained through five grou...

in this study, thermo-mechanical nonlinear vibration of a polyethylene (pe) cylindrical shell embedded in an elastic foundation was investigated. the shell is reinforced by armchair carbon nanotubes (cnts) where characteristics of the equivalent composite being determined using mori-tanaka model. the elastic medium is simulated using the spring constant of the winkler-type,  . employing nonline...