The acoustic emission (AE) technique can perform non-destructive monitoring of the internal damage development bamboo and wood materials. In this experiment, mechanical properties different (bamboo scrimber, plywood SPF (Spruce-pine-fir) dimension lumber) during four-point loading tests were compared. AE activities caused by loadings investigated through single parameter analysis K-means cluste...

Formaldehyde is a colorless, flammable, strong-smelling chemical that is used in building materials and to produce many household products. It is used in pressed-wood products, such as particleboard, plywood, and fiberboard; glues and adhesives; permanent-press fabrics; paper product coatings; and certain insulation materials. In addition, formaldehyde is commonly used as an industrial fungicid...

Formaldehyde-based adhesives are used in the forestry industry. This is because formaldehyde inexpensive, easy to use and resistant moisture; it also has particular mechanical effects. Formaldehyde both advantages disadvantages. It known that various diseases such as lung cancer occur humans a result of release into air during after board production. In this study, urea glue mixture was prepare...

This paper demonstrates a novel method to generate house designs completely from 3/4” plywood sheets. A shape grammar routine is employed to divide an initial solid shape into constructible components for fabrication by CNC wood routing. The paper demonstrates programmable functions that can be performed using CAD scripting. Future goals for the grammar are to develop CAD programs for digital f...

Black poplar wood is used for the manufacture of furniture, paneling, and plywood. In this study, relationship between 3 5 layers UV system varnish applied to black (Populus nigra L.) artificial aging was investigated. addition, before after (252 504 hours), color parameters (∆E*, ∆L*, ∆a*, ∆b*, L*, a*, b*), glossiness, pendulum hardness, surface adhesion resistance (pull-off) tests were perfor...

Wood and combinations of wood and plywood is the most traditional formwork in mould-based shaping of construction components. This kind of formwork usually doesn’t include curvatures, but favours straight lines and sharp corners yielding in angular shape concrete building blocks. In this paper we describe a novel robotized method for manufacturing individual concrete elements with specific shap...

Abstract. The introduced notion of locally periodic two-scale convergence allows one to average a wider range of microstructures, compared to the periodic one. The compactness theorem for locally periodic two-scale convergence and the characterization of the limit for a sequence bounded in H1(Ω) are proven. The underlying analysis comprises the approximation of functions, with the periodicity w...