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Catalog Publications

Year 2008
  • 1 kapitola: Status report on frame sawing machines for narrow-kerf sawing
    Publication

    W opracowaniu przedstawiono genezę pilarek ramowych oraz przecinania drewna cienkimi piłami. Omówiono ekonomiczne i ekologiczne zalety tego typu obróbki. Zaprezentowano kinematykę współczesnych pilarek dostępnych na rynkach światowych: Orbit, Mamuth oraz DSG Sonic. Szczegółowo opisano układ napędowy pilarek DTPX-30 i PRW15 z hybrydowym napędem głównym i całkowitym wyrównoważeniem dynamicznym układu.

  • 2 kapitola: Wybrane przyczyny niedokładności przecinania piłami
    Publication

    W pracy przedstawiono przyczyny niedokładności przecinania drewna piłami. Zaprezentowano teoretyczny i rzeczywisty model układu przecinania. Pokazano bezpośrednią przyczynę powstawania błędów przecinania. W zakresie charakterystycznych częstości zmian położenia efektywnej płaszczyzny ruchu zaprezentowano przykłady wybranych przyczyn niedokładności przecinania drewna piłami.

  • Analisys of the failure of fixator used in bone surgery
    Publication

    The Gamma nail (fixator) made of stainless steel, which has broken in the body, was subjected to examination. The fixator was removed from the patient femur. The fracture occurred in the area of the nail hole after two months' stay in the organism. The research included chemical composition, hardness of the Gamma nail material and the observation and analysis of the type of fracture. The research showed the fatigue failure of the...

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Year 2011
Year 2010
Year 2017
Year 2020
Year 2016
  • 50 lat minęło - z historii studenckich seminariów naukowych mechaników
    Publication

    - Pismo PG - Year 2016

    Przedstawiono 50-letnią historie Seminariów Naukowych Studentów i Młodych Inżynierów Mechaników na Wydziale Mechanicznym PG. Podano organizatorów poszczególnych edycji oraz zwycięzców wygłoszonych referatów w kategorii studenci, dyplomanci i doktoranci. W seminariach brali udział nie tylko uczestnicy z Politechniki Gdańskiej, ale i z innych technicznych uczelni krajowych i zagranicznych.

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  • A BRIEF REVIEW AND COMPARISON OF SELECTED EXPERIMENTAL METHODS FOR MEASURING NATURAL FREQUENCIES OF CIRCULAR SAW BLADES
    Publication

    Different methods for the empirical determination of the natural frequencies of circular saw blades are presented. Stationary methods, such as the harmonic and impulse tests, are discussed and the results of related comparison are given. The comparison of the methods revealed their degree of practical usefulness and their accuracy in determining natural frequencies. A combination of specific methods is proposed, which should allow...

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  • An assessment of teeth quality of the mini gang saw blade
    Publication

    - Annals of WULS, Forestry and Wood Technology - Year 2016

    In this work, the assessment of the effect of the operating time (90 min.) of the mini gang saw blades during sawing Scotch pine (Pinus sylvestris L.) samples upon changes of the saw blade teeth sharpness (bluntness), which was defined as an effective radius of the nose ρ , has been described. The research activities have been carried out on the Nikon Ti-S optical microscope equipped with the Nikon DS-30W camera allowing high-speed...

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Year 2014
  • A Method and Device for 3D Recognition of Cutting Edge Micro Geometry
    Publication

    - Drvna Industrija - Year 2014

    A very useful method was successfully applied in the investigation of tools for machining wood and wood based composites. It allows scanning of the cutting edge micro geometry in three dimensions and reproducing it in a virtual space as a 3D surface. The application of the method opens new possibilities of studying tool wear by scanning, including the calculation of volume loss and other analysis of tool wedge geometry along and...

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  • A New Microwave Ceramic – Polymer Composite with 0-3 Connectivity

    Goal of the present research was to fabricate and study two-phase BiNbO4//PVDF composites with 0-3 connectivity. Such composite consists of there-dimensionally connected polymer matrix loaded with dielectric ceramic particles. In the present case BiNbO4 powder acted as an active phase (dispersed phase) whereas polyvinylidene fluoride (PVDF) acted as a non-active (passive) phase (matrix). BiNbO4//PVDF composites with the volume...

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  • AN INNOVATIVE APPROACH TO PREDICTION ENERGETIC EFFECTS OF WOOD CUTTING PROCESS WITH CIRCULAR-SAW BLADES
    Publication

    - WOOD RES-SLOVAKIA - Year 2014

    In the classical approach, energetic effects (cutting forces and cutting power) of wood sawing process are generally calculated on the basis of the specific cutting resistance, which is in the case of wood cutting the function of more or less important factors. The aim of the paper is to present a new calculating model using the application of modern fracture mechanics and to compare cutting parameters of native beech, Bendywood...

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  • An Innovative Approach to the Forecasting of Energetic Effects While Wood Sawing
    Publication

    - Drvna Industrija - Year 2014

    In the classical approach, energetic effects (cutting forces and cutting power) of wood sawing process are generally calculated on the basis of the specifi c cutting resistance, which is in the case of wood cutting the function of more or less important factors. On the other hand, the cutting forces (power) problem may be tackled with an innovative, up-to-date fundamental analysis of the mechanics of sawing based on modern fracture mechanics....

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Year 2007
Year 2021
Year 1997
Year 2018
Year 2005
Year 2019
Year 2004
Year 2012
  • Al203 sealing elements lapping
    Publication

    - Journal of KONES - Year 2012

    Przedstawiono wyniki badań własnych wydajnosci docierania ceramiki Al203. Badano elementy uszczelniające na docierarce jednotarczowej o standardowym układzie kinematycznym. Określono wpływ wielkości mikroziaren węglika boru o numerze F400/17, F800/6.5 i F1200/3 oraz wartości nominalnego nacisku jednostkowego na ubytek materiału w czasie 15 i 20 min. Scharakteryzowano mechanizm usuwania naddatku przy docieraniu elementów ceramicznych....

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Year 2009
Year 2003
Year 2015
  • AN ALTERNATIVE WAY OF DETERMINING MECHANICAL PROPERTIES OF WOOD BY MEASURING CUTTING FORCES
    Publication

    - Wiadomości Konserwatorskie - Year 2015

    The cutting force is an energetic effect of splitting material, and might be therefore considered from a point of view of modern fracture mechanics. The dedicated mathematical model developed for description of the wood cutting has been developed here on the base of fracture theory, and includes work of separation (fracture toughness) in addition to the material plasticity and friction. The effect of the cutting edge dullness is...

  • An experimental study of high-hydrogen welding processes
    Publication

    This paper presents investigation results of determination of the diffusible hydrogen content in deposited metal obtained by means of two most often used methods-the glycerin method and the mercury method. Relation has been defined between results of those methods in the area characteristic of low-hydrogen as well as high-hydrogen welding processes. Relations available in the literature do not include the diffusible hydrogen content...

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  • Analiza jakości docierania ceramiki technicznej na docierarce jednotarczowej.
    Publication

    - Year 2015

    Przedstawiono wyniki badań docierania elementów płaskich w układzie jednotarczowym. Badano obróbkę elementów ceramicznych. Określono wpływ podstawowych warunków kinematrycznych i technologicznych na parametry chropowatości powierzchni docieranych i ubytek elementów.

Year 2013
  • An innovative approach to the forecasting of energetic effects while wood sawing
    Publication

    - Year 2013

    In the classical approach, energetic effects (cutting forces and cutting power) of wood sawing process are generally calculated on the basis of the specific cutting resistance, which is in the case of wood cutting the function of more or less important factors. On the other hand, the cutting forces (power) problem may be tackled with an innovative, up-to-date fundamental analysis of the mechanics of sawing based on modern fracture...

  • ANALIZA EKONOMICZNA PRODUKCJI WARSTW LICOWYCH PODŁÓG KLEJONYCH WARSTWOWO
    Publication

    - DREWNO - Year 2013

    W artykule przedstawiono wyniki analiz wydajności liniowej, a także struktury kosztów produkcji, za pomocą cienkich pił na pilarce ramowej wielopiłowei i ta-śmowej, dębowych elementów licowych podłóg klejonych warstwowo. Stwierdzo-no, że przy przecinaniu deszczułek o grubości 4 mm o szerokości mniejszej od 180 mm bardziej wydajna jest pilarka ramowa wielopiłowa, zaś w pozostałych przypadkach widać przewagę wydajności pilarki taśmowej....

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