Mendel University in Brno
Department of Wood Science
The standard approach of tree stability assessment assumes that wind force is applied in a unique point (centre of gravity). Such a description of the loading brings a significant simplification of the reality, where the tree stem is... more
Urban trees generate numerous ecosystem services, and these are often closely associated with the species, age and size of trees as well as with their vitality. Generally, the focus of urban and regional planning is aimed at very large... more
Many non-destructive methods for the assessment of wood incorporated in buildings are based on indirect measurement of density, which is closely related to the mechanical properties of wood determining the static condition of the... more
Urban trees generate numerous ecosystem services, and these are often closely associated with the species, age and size of trees as well as with their vitality. Generally, the focus of urban and regional planning is aimed at very large... more
The retention forestry approach is considered as one of the potentially effective tools for sustainable forest management for conservation of biodiversity in managed temperate and boreal forests. Retention of old-growth forest structures... more
The work deals with Poisson's ratios (PR's) of medium density fiberboard (MDF) measured using digital image correlation and correlated to vertical density profiles (VDP). MDFs of four different thicknesses were first scanned by X-ray to... more
The goal of this study was to analyze behavior of the cross-laminated timber (CLT) panel subjected to torsion and develop an efficient procedure for quick verification of numerical model of CLT that subsequently may be used for virtual... more
This paper analyzes the usability of different dynamic moduli of elasticity and wood density for the prediction of mechanical properties – static modulus of elasticity and modulus of rupture – in samples with grain deflection from the... more
The aims of this study were to introduce a new laboratory microwave device developed for the modification of wood properties and to examine the effect of microwave radiation on moisture loss, surface temperature, and mechanical properties... more
Thermal properties of wood and modified wood-based materials are important parameters that influence the manufacturing process and final industrial utilization. The aim of this work was to investigate three main thermal properties... more
The aim of this paper was to predict the static bending modulus of elasticity (MOE S) and modulus of rupture (MOR) of Scots pine (Pinus sylvestris L.) wood using three nondestructive techniques. The mean values of the dynamic modulus of... more
The subject of this paper is description of building of general parametric model of grand piano soundboard in environment of software ANSYS. Parametric utilization of APDL (Ansys Parametric Design Language) was made in full range of this... more
- by Jan Tippner
The existing penetration methods for the identifi cation of the density of wood that forms a part of structures do not make it possible to describe the density in the entire element profi le but only on its surface. However, wood density... more
This paper analyzes the usability of different dynamic moduli of elasticity and wood density for the prediction of mechanical properties-static modulus of elasticity and modulus of rupture-in samples with grain deflection from the... more
The degradation of surface layers of wood can be caused by chemical reactions of compounds contained in fire retardants which were applied to historic wooden structures in the past. Among such chemicals are e.g. ammonium sulphate and... more
The degradation of surface layers of wood can be caused by chemical reactions of compounds contained in fire retardants which were applied to historic wooden structures in the past. Among such chemicals are e.g. ammonium sulphate and... more