The purpose of this study is to optimize the bonding method plywood suitable for cross-laminated timber (CLT) with as a core by analyzing flexural performance and failure mode according lamina species, in longitudinal direction, whether or not adhesive applied joint. In case Douglas fir layer, modulus elasticity decreased about 11.5% due bonding, rupture increased application method. optimal co...

In this study, bullet-proof building panels are investigated. The aim of work is to verify whether the polyethylene-plywood withstand frontal impact with high-speed projectiles. Ultra-high molecular weight polyethylene (UHMWPE) a promising ballistic material due its favorable properties – significant toughness and high strength-to-weight ratio, meantime it lightweight. By setting different para...

This paper is presentation of resulting physical models that were used to explore the relationship between design modeling in CAD and digital fabrication with plywood sheets. We explored a process in making tabletop models with digital fabrication machines and thin plywood sheets. Each was built from combination of predetermined wood joining techniques and structures. These models are believed ...

The article presents the results of measuring sorption humidity three types wood-based products: softwood plywood, hardwood plywood and oriented strand board. It has been established that boards are best option for wet operating conditions

We study the pattern formation of a chiral nematic liquid crystal under a wetting transition. In the isotropic-liquid crystal transition, a surface-enhanced effect happens and a thin liquid crystal layer forms at the substrates of the cell. In this confined system, chirality, elastic anisotropy, surface anchoring, and wetting strength interplay. A striped pattern is formed due to the chiral nat...

in this study, hybrid of phenol formaldehyde-fish glue was used to replace the chemical resin in plywood manufacturing. for this purpose, fish glue was applied at three levels including 0, 10 and 20 percent based on the dry weight of resin. physical and mechanical properties of manufactured plywoods were measured. thickness swelling after 2 and 24 hours immersion in tap water, bending strength,...

The new optimization method for fiber orientation angle optimization of symmetrical multilayer plates like plywood is proposed. Optimization method consists of seeking for minimal compliance by choosing appropriate fiber orientation angle in outer layers of flexural plate. The discrete values of fiber orientation angles are used in method. Optimization results of simply supported plate and mult...

Recycling of single use plastic like milk pouches, oil etc. for high value products can have significant environmental, social and economic implications. The present study focuses on the utilization waste pouches made out low-density polyethylene as bonding agent in preparation plywood panels. Plywood panels with varying content polymeric (milk pouch layers) were prepared evaluated physical mec...

In this paper, the elastic behaviour in bending of three-layer plywood cantilever beams is analysed. Deflections straight and half-circle cantilevers, loaded with a force at free end determined experimentally calculated using analytical finite element method approach. The calculation deflection for strait obtained transformed cross section. by classical laminated plate theory Castigliano’s theo...