Výsledky vyhľadávania
Názov Design and comparison of a suitable dust separation technique during the machining process in a CNC machining center Aut.údaje Martin Kučerka, Alena Očkajová ... [et al.] Autor Kučerka Martin 1980- (30%) UMBFP07 - Katedra techniky a technológií
Spoluautori Očkajová Alena 1961- (20%) UMBFP07 - Katedra techniky a technológií
Kminiak Richard (20%)
Rogoziński Tomasz (10%)
Sydor Maciej (5%)
Pędzik Marta (5%)
Giudice Valentina Lo (5%)
Todaro Luigi (5%)
Zdroj.dok. Annals of Warsaw University of Life Sciences - SGGW : forestry and wood technology. No. 122 (2023), pp. 99-107. - Varšava : Wydawnictwo SGGW, 2023 Kľúč.slová spracovanie dreva - wood processing obrábacie stroje Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Poľsko Anotácia Design and comparison of a suitable separation technique during the machining process in a CNC machining center. The paper deals with the issue of chip extraction from the milling process in a CNC machining center. The paper aimed to compare the particle size distribution of dust generated in the milling process of natural wood (beech, oak, and spruce) and MDF on a 5-axis CNC machining center. The particle size distribution was evaluated using sieve analysis of samples from the total weight of the captured dust. The results showed that the processing of natural wood is mainly characterized by the formation of coarse dust fractions (2 mm - 1 mm sieves), while the processing of MDF was associated with the formation of fine dust fractions with a size below 100 μm. Another of the objectives was to compare the separation values on the fractional separation curves of selected mechanical separators and filters with the size distribution of dust particles and to propose a suitable separation technique that meets the criteria of "best available technique" (BAT) in the processing of natural wood and MDF, as well as to point out the creation of and the production of harmful dust fractions, which arise mainly during the processing of MDF. We intended to assess whether the introduction of the given technology with the given material mix will also require modifications on the side of the extraction device. URL Link na zdrojový dokument Link na zdrojový dokument Kategória publikačnej činnosti ADE Číslo archívnej kópie 53500 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika 
článok
Názov Effect of low-thermal treatment on the particle size distribution in wood dust after milling Aut.údaje Martin Júda ... [et al.] Autor Júda Martin (35%)
Spoluautori Sydor Maciej (5%)
Rogoziński Tomasz (5%)
Kučerka Martin 1980- (25%) UMBFP07 - Katedra techniky a technológií
Pędzik Marta (5%)
Kminiak Richard (25%)
Zdroj.dok. Polymers. Vol. 15, no. 4 (2023), pp. [1-17]. - Basel : Multidisciplinary Digital Publishing Institute, 2023 Kľúč.slová spracovanie dreva - wood processing bukové drevo tepelné spracovanie - heat treatment Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Švajčiarsko URL Link na plný text Kategória publikačnej činnosti ADC Číslo archívnej kópie 53000 Kategória ohlasu ČAVLOVIĆ, Anka Ozana - BEŠLIĆ, Ivan - PERVAN, Stjepan - PREKRAT, Silvana. Characteristics of thermally modified hardwood dust in determining workers’ occupational exposure. In BioResources. ISSN 1930-2126, 2023, vol. 18, no. 2, pp. 3923-3937.
LEE, Seng Hua - ANTOV, Petar - KRISTAK, Lubos - REH, Roman - LUBIS, Muhammad Adly Rahandi. Application of wood composites III. In Applied sciences. ISSN 2076-3417, 2023, vol. 13, no. 11, pp. 1-4.
VARELA, Alejandro - CASTILLO-RUIZ, Francisco J. - ARBIZU-MILAGRO, Julia - TASCON, Alberto. The influence of moisture on the sieving performance of lignocellulosic biomass. In Biofuels, bioproducts and biorefining. ISSN 1932-104X, 2023, vol. 17, no. 6, pp. 1708-1723.
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Názov Fine dust after sanding untreated and thermally modified spruce, oak, and meranti wood Aut.údaje Maciej Sydor, Jerzy Majka ... [et al.] Autor Sydor Maciej (5%)
Spoluautori Majka Jerzy (5%)
Hanincová Luďka (5%)
Kučerka Martin 1980- (25%) UMBFP07 - Katedra techniky a technológií
Kminiak Richard (20%)
Krišťák Ľuboš (10%)
Pędzik Marta (5%)
Očkajová Alena 1961- (20%) UMBFP07 - Katedra techniky a technológií
Rogoziński Tomasz (5%)
Zdroj.dok. European journal of wood and wood products. Vol. 81, no. 6 (2023), pp. 1455-1464. - Berlin : Springer-Verlag, 2023 Kľúč.slová drevný prach brúsenie smrekové drevo dubové drevo Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Nemecko Anotácia Airborne wood dust poses health and safety risks in the construction and furniture industry. The study verified whether the thermal modification affects the share of fine wood dust particles (< 10 μm) generated during spruce, oak, and meranti wood sanding. The experimental research involved nine material variants, including three wood species in three states: untreated, thermally modified at 160 °C, and thermally modified at 220 °C). To collect at least 200 g of each dust sample, a belt sander with P80 sandpaper and a belt speed of 10 m/s was used, along with a dust collector. The collected dust was then separated into fractions using a set of sieves with aperture sizes of 2000, 1000, 500, 250, and 125 μm. A laser particle sizer was employed to measure the sizes of dust particles in the under-sieve fraction (dust with particle sizes smaller than 125 μm). The under-sieve fraction was decomposed into three subfractions, with particle sizes: <2.5, 2.5-4.0, and 4.0–10 μm. Surprisingly the results indicate that sanding dust from thermally modified wood generates a lower average mass share of potentially harmful fine particle fractions than dust from untreated wood. Oak dust contained a higher mass share of fine particles compared to the spruce and meranti dust samples. Dust from thermally modified oak and meranti wood had a lower content of harmful particle fractions than dust from untreated wood. The average mass shares of these dust fractions for modified wood at 160 and 220 °C showed no statictically significant differences (p < 0.05). Conversely, spruce dust had a low content of fine fractions because spruce particles exhibit a more irregular elongated shape. The study considered the extreme temperatures of 160 and 220 °C used in the thermal modification of wood. Therefore, the above statements are assumed to be valid for all intermediate thermo-modification temperatures. URL Link na zdrojový dokument Kategória publikačnej činnosti ADC Číslo archívnej kópie 53499 Kategória ohlasu DADO, Miroslav - SCHWARZ, Marian - SALVA, Jozef - JANKOVIC, Richard - HNILICA, Richard. Comparison of the declared and simulated real-use noise data during wood sanding using a hand-held power sander. In Acoustics. ISSN 2624-599X, 2023, vol. 5, no. 4, pp. 1136-1147.
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Názov Quantifying the finest particles in dust fractions created during the sanding of untreated and thermally modified beech wood Aut.údaje Jerzy Majka, Maciej Sydor ... [et al.] Autor Majka Jerzy (10%)
Spoluautori Sydor Maciej (10%)
Pędzik Marta (10%)
Antov Petar (10%)
Krišťák Ľuboš (10%)
Kminiak Richard (10%)
Kučerka Martin 1980- (30%) UMBFP07 - Katedra techniky a technológií
Rogoziński Tomasz (10%)
Zdroj.dok. BioResources. Vol. 17, no. 1 (2022), pp. 7-20. - Raleigh : North Carolina State University, 2022 Kľúč.slová sitová analýza brúsenie dreva bukové drevo Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Spojené štáty URL Link na plný text Link na zdrojový dokument Kategória publikačnej činnosti ADC Číslo archívnej kópie 51418 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika článok
Názov Indentation hardness and elastic recovery of some hardwood species Aut.údaje Maciej Sydor ... [et al.] Autor Sydor Maciej (20%)
Spoluautori Pinkowski Grzegorz (20%)
Kučerka Martin 1980- (20%) UMBFP07 - Katedra techniky a technológií
Kminiak Richard (20%)
Antov Petar (10%)
Rogoziński Tomasz (10%)
Zdroj.dok. Applied Sciences. Vol. 12, č. 10 (2022), pp. [1-14]. - Basel : Multidisciplinary Digital Publishing Institute, 2022 Kľúč.slová drevo - wood stromy - trees drevársky priemysel Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Švajčiarsko Anotácia The purpose of the study was to measure the Brinell hardness (HB) of six wood species and evaluate the ability to recover the depth of the imprint (self-re-deformation). Straight-grain clear samples of ash, beech, alder, birch, iroko, and linden wood were prepared. Measurements were made in the three main reference timber cross-sections: radial (R), tangential (T), and axial/longitudinal (L) and with two measuring loads of 30 kG and 100 kG (294.2 N and 980.7 N). The tested wood species could be classified into hard (ash, beech), medium-hard (alder, birch, iroko), and soft (linden) wood species. The HBs of each tested wood species differed in the cross-sections, i.e., side hardness (R, T) and end hardness (L). Higher HB values were obtained at 100 kG load in all species and all three cross-sections. The lowest influence of the measurement force value on the HB value was revealed for the soft wood species (linden: 107–118%). This influence was visible for the other five medium-hard and hard wood species, ranging from 125% to 176%. The percentage of temporary imprint in total imprint depth (x/H) varied from 12 to 33% (linden 12–18%—the lowest self-re-deformation ability; beech 25–33%—the highest self-re-deformation ability). The results of this study underline that the higher the density of the wood, the higher the Brinell hardness, and, simultaneously, the greater the measurement force used, the higher the Brinell hardness measured. The ability of self-re-deformation in wood’s R and T cross-sections depends on the wood density and the measuring force used. In contrast, this ability only depends on the wood density in the L cross-section. Those observations imply that the compaction of the cell structure during side compression is mainly non-destructive, while the longitudinal deformation of the cell structure (the buckling of cell walls and fracture of ends of the cells) is to a great degree destructive and irreversible. These results can be used in the construction and furniture sectors, especially when designing products and planning the woodworking of highly loaded wood floors and furniture elements. URL Link na plný text Kategória publikačnej činnosti ADC Číslo archívnej kópie 51834 Kategória ohlasu BAUFLEUR, Andressa Midori Yamauchi - STANGERLIN, Diego Martins - FERREIRA, Matheus Rafael - PARIZ, Elisangela - RODOLFO JUNIOR, Francisco - PAULA, Edgley Alves de Oliveira - DE MELO, Rafael Rodolfo. Effect of acetylation on technological characteristics of Jacaranda copaia wood : part 1 - physical and mechanical properties. In Nativa (Sinop). ISSN 2318-7670, 2022, vol. 10, no. 2, pp. 277-282.
ATANASOV, Valentin - KOVATCHEV, Georgi - TODOROV, Tihomir. Study of the influence of basic process parameters on the roughness of surfaces during wood milling. In 10th Hardwood conference proceedings, Sopron, 12th-14th October 2022 [online]. Sopron : University of Sopron press, 2022, pp. 242-250 [cit. 2022-10-20]. ISBN 978-963-334-446-0. Dostupné na: https://doi.org/10.35511/978-963-334-446-0
WARCHOLINSKI, Bogdan - GILEWICZ, Adam. Surface engineering of woodworking tools, a review. In Applied sciences (Basel). ISSN 2076-3417, 2022, vol. 12, no. 20, pp. 1-19.
MILLANIYAGE, Kuluni - KOTLAREWSKI, Nathan - WALLIS, Louise - TAOUM, Assaad - NOLAN, Gregory. Janka Hardness evaluation of plantation-grown eucalyptus nitens for engineered flooring applications. In Buildings. ISSN 2075-53,9, 2022, vol. 12, no. 11, pp. 1-14.
ATANASOV, Valentin - KOVATCHEV, Georgi - TODOROV, Tihomir. Influence of main parameters of the milling process on the roughness when processing solid wood of meranti. In Pro ligno. ISSN 1841-4737, 2023, vol. 19, no. 2, pp. 3-10.
ŽIGON, Jure - STRAŽE, Aleš. Vpliv vlažnosti na mikrotrdoto smrekovine, določeno z vtiskanjem. In Les [online]. 2023, vol. 72, no. 1, pp. 5-16 [cit. 2023-09-06]. ISSN 2590-9932. Dostupné na: https://doi.org/10.26614/les-wood.2023.v72n01a01
KOCZAN, Grzegorz. Probing measurements of the Meyer hardness index of radial, tangential and cross section of various types of wood. In Annals of Warsaw university of life sciences SGGW : forestry and wood technology. ISSN 1898-5912, 2023, no. 121, pp. 21-27.
ATANASOV, Valentin - KOVATCHEV, Georgi - TODOROV, Tihomir. Study of the influence of basic process parameters on the roughness of surfaces during milling of scots pine wood. In Acta facultatis xylologiae Zvolen. ISSN 1336-3824, 2023, vol. 65, no. 2, pp. 89-98.
MILLANIYAGE, Kuluni - KOTLAREWSKI, Nathan - WALLIS, Louise - TAOUM, Assaad. Engineered flooring from low-density plantation hardwood : evaluation of long-term in-service trials. In Wood and fiber science. ISSN 0735-6161, 2024, vol. 56, no. 1, pp. 24-42.
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