A5089316607- Wood Treatment and Properties
- Manufacturing Process and Optimization
- Forest ecology and management
- Advanced machining processes and optimization
- Forest Biomass Utilization and Management
- Tree Root and Stability Studies
- Metal Alloys Wear and Properties
- Tunneling and Rock Mechanics
- Mechanical and Thermal Properties Analysis
- Tribology and Lubrication Engineering
- Adhesion, Friction, and Surface Interactions
- Engineering Technology and Methodologies
- Wood and Agarwood Research
- Lignin and Wood Chemistry
- Metal Forming Simulation Techniques
- Tribology and Wear Analysis
- Plant Surface Properties and Treatments
- Integrated Circuits and Semiconductor Failure Analysis
- Cultural Heritage Materials Analysis
- VLSI and FPGA Design Techniques
- Flame retardant materials and properties
- Surface Treatment and Coatings
- Material Properties and Processing
- Embedded Systems Design Techniques
- Forest Insect Ecology and Management
University of Life Sciences in Poznań
2013-2024
University of Life Sciences in Lublin
2016-2023
The effect of short-term thermomechanical densification veneer on the surface roughness and anatomical changes in four wood species – alder (Alnus glutinosa Gaertn.), beech (Fagus sylvatica L.), birch (Betula verrucosa Ehrh.), pine (Pinus sylvestris L.) was studied. Veneer sheets were densified at a temperature 100, 150, or 200°C pressure 4, 8, 12 MPa for 4 minutes. Seven parameters such as Ra, Rz, Rq, Rp, Rv, Rsk, Rku determined. Profile recorded using modified Carl Zeiss ME-10 profile...
The aim of this study was to assess the effect duration heat treatment on changes in color, as well chemical and mechanical properties Scots pine sapwood. An important element research obtain assumed temperature entire volume samples. Quantitative color its components were recorded, while determined tests compressive strength parallel perpendicular grain, longitudinal tensile modulus elasticity impact strength. novelty determine above-mentioned parameters for twin samples with identical...
The article presents research on the effect of sharpness angle quality machined surface native wood species (pine, beech, and black locust) an exotic called iroko. Four values were analyzed at 25, 40, 45, 55°. experiment was conducted a bottom-spindle milling machine, with constant spindle rotational speed (6000 min-1) four feeding speeds 3.2, 8.3, 12.5, 16.7 m/min. influence angle, speed, determined. optimum ranges established respect to quality. roughness samples decreased decreasing in...
Abstract Objectives The aim of the study was to determine effect parameters thermal modification process and machining on size distribution dust particles Scots pine (Pinus sylvestris L.) generated during lengthwise milling. Method Unmodified wood thermally modified at temperatures 130, 160, 190, 220°C were milled cutting depths 0.5 2 mm. Particle analysis done using sieving method. content finest measured laser diffraction Results results indicate that smaller depths, more formed regardless...
The paper presents experimental testing results of cutting power thermally modifi ed wood Scots pine (Pinus sylvestris L.) during lengthwise milling.The process heat treatment was performed in the atmosphere superheated steam, at temperatures 130, 160, 190 and 220 °C, maintaining an identical heating time 4 h for all cation variants.Cutting determined milling radial surface non--modifi samples.It calculated as difference used by a machine machining idling.Based on measurements, it found...
The aim of the conducted experiments was to determine effect selected machining parameters on power consumption and surface quality obtained during milling beech wood using a computerized numerical control woodworking machine. Surface roughness tested contact measurement method, while Ra Rz were recorded cutting energy determined. Tests for two variants speed (7.5 15 m·s-1) as well three chip thickness (0.10, 0.06, 0.02 mm); additionally, tests examined different cross-sections wood. It...
The purpose of the study was to measure Brinell hardness (HB) six wood species and evaluate ability recover depth imprint (self-re-deformation). Straight-grain clear samples ash, beech, alder, birch, iroko, linden were prepared. Measurements made in three main reference timber cross-sections: radial (R), tangential (T), axial/longitudinal (L) with two measuring loads 30 kG 100 (294.2 N 980.7 N). tested could be classified into hard (ash, beech), medium-hard (alder, iroko), soft (linden)...
We hypothesize that the ability to recovery depth of indentation increases with increasing hardness flooring material. The research was carried out for ten lignocellulosic materials: merbau, oak, maple, red laminated HDF (high-density fiberboard), innovative plywood, beech, pine, peasantry, iroko. examined using Brinell method, and additionally, elastic indenter measured during test. On this basis, permanent (plastic) temporary (elastic) component total deformation determined. Different...
The surface roughness in plane milled Scots pine wood that was thermally modified at 190 °C and 220 examined. Indicators of included the three most commonly applied parameters, arithmetic mean (Ra), depth (Rz), total height profile (Rt). Roughness tested separately for earlywood latewood using two feed speeds 1 5 m/min. thickness layer mm. effect all controlled factors, i.e., speed, temperature modification, place measurements, on parameters were statistically significant (P < 0.05). Surface...
The aim of this study was to determine the dependencies between mechanical properties modified wood and its color. Within scope, quantitative changes in color chemical composition (mass loss, total carbon content, content extractives main components wood), as well (compressive strength along grain, modulus elasticity longitudinal tension tests, compression across grain impact resistance) Scots pine sapwood, were determined. Modifications conducted atmosphere superheated steam (time-4 h,...
The effect of spiral grain angle on the cutting power was tested during plane milling Scots pine wood. It is known that resistance depends arrangement in relation to direction woodworking operations. In this work, up-milling (conventional cutting) applied, as well two techniques: with and against grain. Tests were conducted samples differing their position at stem cross-section, one located closer circumference 11.5° other pith, which 7.5°. This analysis confirmed significant differences...
The production of plywood from impregnated veneers allows a wood-based product protected in the entire cross-section to be obtained.The conducted research was focused on properties with mixture potassium carbonate and urea, such as pH, wettability, colour change surface roughness.In addition, produced melamineurea-formaldehyde resin, shear strength formaldehyde emission, were subject well.It found that characterized by an increased completely different unchanged roughness.Moreover,...
The aim of this study was to determine the effect average chip thickness and blade wear on cutting power consumption surface quality obtained in up-milling wood different densities. roughness investigated using contact method, recording parameters Ra Rz, determined a wattmeter. research conducted for two variants wear, i.e., sharp blunt, three (0.10, 0.06, 0.02 mm). Four species with very densities were tested, balsa (Ochroma pyramidale (Cav. ex Lam.) Urb.), obeche (Triplochiton scleroxylon...
The aim of this study was to investigate the effect blade type and sharpness angle on wear, cutting power, surface roughness. conducted medium-density fibreboard (MDF) panels. Two types were analyzed (high-speed steel cemented carbides) along with three variants angles (40°, 45°, 55°). Machining operations performed a spindle moulder at feed rate 6.3 m/min rotational speed 4500 min-1. wear criterion adopted as loss cutter area measured rake face. Roughness determined using Ra parameter,...