The model of the interaction of the noise from a spreading subsonic jet with a panelstringer assembly is studied numerically in two dimensions. The radiation resulting from this ow/acoustic/structure coupling is computed and analyzed in both the time and frequency domains. The jet is initially excited by a pulse-like source inserted into the ow eld. The pulse triggers instabilities associated w...

Physical and mechanical properties were evaluated on cross-laminated panels (plywood) fabricated with three plantation species (Cordia alliodora, Gmelina arborea and Vochysia ferruginea) from tropical climates in Costa Rica. The panels were glued with urea-formaldehyde resin modified with nanoclay at four concentrations (0,75; 1,00; 1,50 and 2,00 %) and unmodified resin. It was determined that ...

in this study, the possibility of producing wood-plastic panels was studied using two different blending methods including melt blend and dry blend. wood-plastic panels were made from recycled high density polyethylene (as resin) and mdf waste (as natural fiber) at 60, 70 and 80% by weight filler loading. nominal density and dimensions of the panels were 1g/cm3 and 35×35×1 cm, respectively. the...

This paper presents several advancements in the use of fiber reinforced polymer (FRP) materials for the precast concrete industry. Precast concrete members are commonly selected for reasons such as the high level of quality control used in their production, the durability of the finished structure, reduced labor costs and shorter construction schedules, and the economics of scale achieved with ...

Since the introduction of general European rules for the design of aluminium structures, specific rules for the design of aluminum stressed skin panels are available. These design rules have been used for the optimization of two extrusion products: one for explosions and wind load governing and one for explosions and floor load governing. The optimized extrusions fulfill Class 3 section propert...

Thermoplastic towpregs are convenient and scalable raw materials for the fabrication of continuous fiber-reinforced thermoplastic matrix composites. In this paper, the potential to employ epoxy and styrene-acrylic sizing agents was evaluated for the making of carbon fiber thermoplastic towpregs via a powder-coating method. The protective effects and thermal stability of these sizing agents were...

Historic constructions are common in Europe, but natural hazards can produce significant damage. Shear reinforcement of historic walls, especially seismic areas, is often necessary and new retrofitting methods have recently been proposed to restore or increase the lateral capacity shear walls. In this paper combined use cross-laminated timber panels steel wire ropes reinforce rubble stone mason...

This paper describes the testing of Profiled Steel Sheet Dry Board (PSSDB) load bearing wall system. Experimental tests were conducted on various PSSDB wall samples, with and without infill materials to study its effect on the PSSDB load bearing wall performance. A proprietary profiled steel sheet, Ajiya Cliplock (0.48 mm thick) attached to Cemboard (10 mm thick) on one side, and Cemplank (10 m...

In Japan, steel moment frames comprising H-shaped beams and square hollow-section columns with through diaphragms are often used for low- to middle-rise building structures. The column overdesign factor—strength ratio between beams—is specified as ≥1.5 in Japanese seismic design code ensure adequate energy absorption capacity against bidirectional ground motion by achieving an entire beam-hingi...

Based on the idea of first producing small-size CLT panels and afterward connecting them using finger joints to make larger panels, finger-jointed test specimens were fabricated by setting experimental parameters such as kind joint (large or normal), combination strength (strong–strong, weak–weak) number layers, ply (3L3P, 5L5P, 5L7P). Destructive tests subjected out-of-plane well in-plane bend...