Search results for: FRICTION RESISTANCES

• Friction Resistances in Internal Gear Pump with Modified Sickle Made of Plastic

  Publication

  • K. Towarnicki
  • M. Stosiak
  • P. Antoniak
  • T. Lesniewski
  • K. Urbanowicz
  • P. Śliwiński

  - Year 2022

  This paper presents modifications of the sickle insert (constructional and material) made in a gear pump with internal meshing. The introduced design change consists in making an incision in the sickle insert. Due to this treatment, the races of the insert are pressed against the apex wheels of the gears. The introduced compensation causes a smaller drop in pump efficiency with increasing discharge pressure. The article describes...

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• COMPARISON OF THE ABRASION RESISTANCE OF THE SELECTED BIOMATERIALS FOR FRICTION COMPONENTS IN ORTHOPEDIC ENDOPROSTHESES

  Publication

  • K. Zasińska
  • T. Seramak
  • J. Łubiński

  - TRIBOLOGIA - Year 2015

  Rosnące z każdym rokiem zapotrzebowanie na endoprotezy stawów ortopedycznych przy jednoczesnym dążeniu do zwiększenia ich trwałości i wyeliminowania negatywnych skutków ubocznych produktów zużycia, które mogą wywoływać proces zapalny w tkankach determinuje potrzebę poszukiwania nowych biomateriałów, bądź metody modyfikacji ich powierzchni. Nadrzędnym celem prowadzonych przez nas badań było oszacowanie intensywności zużycia ściernego...

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• Evaluation of Wear Resistance of Ti alloys used for elements friction of knee endoprosthesis

  Publication

  • B. Majkowska-Marzec
  • M. Jażdżewska
  • D. Miotke
  • E. Wołowiec
  • A. Zieliński

  - Solid State Phenomena - Year 2014

  The paper presents research results of resistance to abrasive wear of titanium alloys: Ti6Al4V (commonly used) and Til3Nb13Zr (alloy of new generation) in association with polyethylene (UHMW-PE) predisposed for elements on pair of the knee endoprosthesis. The results were analysed from the point of possibility of an use of new generation titanium alloys as components of such implants. The tests of resistance to abrasive wear of...

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• THE DETERMINATION OF ABRASION RESISTANCE OF SELECTED BIOMATERIALS FOR THE FRICTION PAIRS IN THE HIP JOINT ENDOPROSTHESIS

  Publication

  • K. Zasińska
  • T. Seramak
  • J. Łubiński

  - Advances in Materials Science - Year 2014

  The key requirement for the modern endoprosthesis is high durability of the friction components, which results in long and trouble-free operation in the human body. The durability of currently used endoprosthesis is often limited by tribological wear processes of friction components (e.g. between the head and the acetabular component in a hip joint endoprosthesis) [8, 19, 23, 24]. In order to compare the tribological wear, tribological...

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• Effect of Processing Parameters on Strength and Corrosion Resistance of Friction Stir-Welded AA6082

  Publication

  • A. Mirowska
  • M. Szkodo
  • D. Koszelow
  • P. Cavaliere

  - Metals - Year 2022

  The friction stir welding method is increasingly attracting interest in the railway sector due to its environmental friendliness, low cost, and ease of producing high-quality joints. Using aluminum alloys reduces the weight of structures, increasing their payload and reducing fuel consumption and running costs. The following paper presents studies on the microstructure, strength, and corrosion resistance of AA6082 aluminum alloy...

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• The theoretical description of friction force in bio-joints as function of cartilage roughness

  Publication

  • S. Chizhik
  • K. Wierzcholski
  • A. Miszczak

  - SCIENTIFIC PROBLEMS OF MACHINES OPERATION AND MAINTENANCE - Year 2006

  Wartości sił tarcia w naturalnych stawach człowieka a szczególnie w endoprotezach stawu biodrowego rzutują na proces zużywania się powierzchni stawowych. Dlatego problem wyznaczania sił tarcia w biołożyskach jest bardzo istotny. W trakcie chodzenia mamy co najmniej ruch sferycznej powierzchni głowy w dwóch różnych kierunkach dla naturalnych i sztucznych stawów biodrowych człowieka. Dlatego też siły tarcia występują co najmniej...

• The problems of resistance to scuffing of heavily loaded lubricated friction joints with WC/C-coated parts

  Publication

  • R. Michalczewski
  • W. Piekoszewski
  • W. Tuszynski
  • M. Szczerek

  - INDUSTRIAL LUBRICATION AND TRIBOLOGY - Year 2014

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• Corrosion and Cavitation Resistances of Low Alloy Steel After Frictional-Mechanical Treatment

  Publication

  • D. Kocańda
  • W. Jurczak
  • E. Łunarska
  • M. Szociński

  - Mehanika mašin, mehanizmov i materialov - Year 2017

  Paper presents the results of the studies of wear, corrosion and cavitation resistances of the S355J2 low alloy medium carbon steel subjected to surface modification by friction-mechanical treatment, as tested in sea water simulated solution. To evaluate the effect of the surface treatment, the comparative studies of the corrosive properties of the steel before and after treatment have been considered. The treatment due to a severe...

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• Food & Function

  Journals

  ISSN: 2042-6496 , eISSN: 2042-650X

• Microbial Drug Resistance

  Journals

  ISSN: 1076-6294 , eISSN: 1931-8448

• Function

  Journals

  eISSN: 2633-8823

• Remittances Review

  Journals

  ISSN: 2059-6588 , eISSN: 2059-6596

• Temperature Evolution, Material Flow, and Resulting Mechanical Properties as a Function of Tool Geometry during Friction Stir Welding of AA6082

  Publication

  • A. Mirowska
  • B. Sadeghi
  • B. Sadeghian
  • A. Taherizadeh
  • M. Szkodo
  • P. Cavaliere

  - JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE - Year 2023

  The friction stir welding process was simulated for joining AA6082 aluminum alloy with the use of the computational fluid dynamics method. Two different tool geometries were used—a tapered cylindrical pin (simple pin) and a hexagonal pin with grooves (complex pin). The analysis of the simulations performed was discussed in terms of temperature evolution during the process, total heat input, residual stresses and material flow....

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• DRUG RESISTANCE UPDATES

  Journals

  ISSN: 1368-7646 , eISSN: 1532-2084

• JAC-Antimicrobial Resistance

  Journals

  eISSN: 2632-1823

• Cancer Drug Resistance

  Journals

  eISSN: 2578-532X

• PROTEINS-STRUCTURE FUNCTION AND BIOINFORMATICS

  Journals

  ISSN: 0887-3585 , eISSN: 1097-0134

• Studies in Short Fiction

  Journals

  ISSN: 0039-3789

• Eighteenth-Century Fiction

  Journals

  ISSN: 0840-6286 , eISSN: 1911-0243

• Novel: a forum on fiction

  Journals

  ISSN: 0029-5132 , eISSN: 1945-8509

• Science Fiction Studies

  Journals

  ISSN: 0091-7729

• Modern Fiction Studies

  Journals

  ISSN: 0026-7724 , eISSN: 1080-658X

• International Fiction Review

  Journals

  ISSN: 0315-4149

• Studies in American Fiction

  Journals

  ISSN: 0091-8083 , eISSN: 2158-415X

• Dynamic mechanical properties and flexing fatigue resistance of tire sidewall rubber as function of waste tire rubber reclaiming degree

  Publication

  • Z. Zhang
  • Z. Peng
  • K. Formela
  • S. Wang

  - JOURNAL OF APPLIED POLYMER SCIENCE - Year 2021

  A stepwise downsizing method of gel particles in reclaimed rubber to a micro-nano scale and its excellent dynamic performance in tire sidewall were introduced by this work. The results showed that the size of gel particles decreased from several micrometers to micro-nanometers with the increase of reclaiming degree, accompanied by reduced molecular weight and widened molecular weight distribution of sol fraction. The addition of...

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• Antimicrobial Resistance and Infection Control

  Journals

  ISSN: 2047-2994

• Katarzyna Januszewicz dr hab. inż.

  People

  Department of Energy Conversion and Storage

  Since her doctoral studies, she has been dealing with the subject of pyrolysis, i.e. anaerobic thermal degradation of waste, in particular biomass and waste tires. The research concerns: the pyrolysis process of various types of waste by analysis of the fractions, valorization of the obtained products and activation of the solid fraction - char.

• Friction

  Journals

  ISSN: 2223-7690 , eISSN: 2223-7704

• Resistance is futile

  Publication

  • S. Taryma

  - Tire Technology International - Year 2005

  Omówiono zasadę działania przyczepy dynamometrycznej służącej do pomiaru oporu toczenia opon do samochodów osobowych i dostawczych w warunkach drogowych. Przyczepa ta została zbudowana w Katedrze Pojazdów i Maszyn Roboczych Politechniki Gdańskiej. Zaprezentowano wyniki dadań oporu toczenia dwóch opon na nawierzchni SMA 0/12,8.

• The influence of contact geometry on friction and wear characteristics

  Publication

  • R. Michalczewski
  • W. Piekoszewski
  • M. Szczerek
  • M. Wiśniewski
  • R. Michalczewski

  - Tribotest - Year 2000

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• Flow and friction around the growing cartilage cells

  Publication

  • K. Wierzcholski
  • A. Miszczak

  - SCIENTIFIC PROBLEMS OF MACHINES OPERATION AND MAINTENANCE - Year 2006

  Inżynieria tkankowa jest jedną z najszybciej rozwijających się dziedzin biotechnologii stosowanej. Nowe metody badawcze tej nauki mogą być rozwiązane jedynie przy wzajemnej współpracy biologów, tribologów, mechaników, ortopedów klinicystów.Schorzenia chrząstki stawowej dotyczą milionów ludzi na świecie, często nawet w młodym wieku. Od kilkunastu lat z powodzeniem prowadzone są próby rekonstrukcji chrząstki stawowej oparte na dwóch...

• Internal friction in FePd alloy during ordering

  Publication

  • E. Klugmann
  • M. Polowczyk

  - TRIBOLOGIA - Year 2002

  Stwierdzono występowanie wysokiego poziomu tarcia wewnętrznego w zahartowanym stopie FePd (50% at. Pd). Zbadano proces uporządkowania atomowego w korelacji ze zmianami tarcia wewnętrznego defektu modułu i relaksacji magnetycznej stopu porządkującego się podczas nagrzewania do 900 K. Zaobserwowano efekt prędkości nagrzewania na punkt Curie.

• Developments in unsteady pipe flow friction modelling

  Publication

  • R. Szymkiewicz

  - JOURNAL OF HYDRAULIC RESEARCH - Year 2002

  W pracy omówiono wpływ błędów numerycznych na jakość rozwiązania równań uderzenia hydraulicznego. Wykazano rolę dyfuzji numerycznej i jej wpływ na dokładność rozwiązania w porównaniu z członem tarcia.

• Friction induced vibrations in sliding of monolithic alumina

  Publication

  • J. Łubiński
  • K. Druet

  - Year 2005

  Przedstawiono wyniki badań wzbudzania się (i ewentualnie - zaniku) drgań mechanicznych towarzyszących tarciu ślizgowemu próbek o płaskiej powierzchni styku, wykonanych z monolitycznego tlenku aluminium. Badano wpływ wymuszeń tribologicznych oraz dynamicznych cech układu badawczego na przebieg zjawiska.

• Critique - Studies in Contemporary Fiction

  Journals

  ISSN: 0011-1619 , eISSN: 1939-9138

• Science Fiction Film and Television

  Journals

  ISSN: 1754-3770 , eISSN: 1754-3789

• Short Fiction in Theory and Practice

  Journals

  ISSN: 2043-0701 , eISSN: 2043-071X

• Brain Structure & Function

  Journals

  ISSN: 1863-2653 , eISSN: 1863-2661

• CELL STRUCTURE AND FUNCTION

  Journals

  ISSN: 0386-7196 , eISSN: 1347-3700

• Journal of Function Spaces

  Journals

  ISSN: 2314-8896 , eISSN: 2314-8888

• Victorian Popular Fictions

  Journals

  eISSN: 2632-4253

• TREES-STRUCTURE AND FUNCTION

  Journals

  ISSN: 0931-1890 , eISSN: 1432-2285

• Journal of Global Antimicrobial Resistance

  Journals

  ISSN: 2213-7165 , eISSN: 2213-7173

• Investigation of Mechanical and Microstructural Properties of Welded Specimens of AA6061-T6 Alloy with Friction Stir Welding and Parallel Friction Stir Welding Methods

  Publication

  • A. Ghiasvand
  • M. M. Yavari
  • J. Tomków
  • J. W. Grimaldo Guerrero
  • H. Kheradmandan
  • A. Dorofeev
  • S. Memon
  • H. A. Derazkola

  - Materials - Year 2021

  The present study investigates the effect of two parameters of process type and tool offset on tensile, microhardness, and microstructure properties of AA6061-T6 aluminum alloy joints. Three methods of Friction Stir Welding (FSW), Advancing Parallel-Friction Stir Welding (AP-FSW), and Retreating Parallel-Friction Stir Welding (RP-FSW) were used. In addition, four modes of 0.5, 1, 1.5, and 2 mm of tool offset were used in two welding...

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• Friction and Lubrication of Large Tilting-Pad Thrust Bearings

  Publication

  • M. Wasilczuk

  - Lubricants - Year 2015

  Fluid film bearings have been extensively used in the industry because of their unbeatable durability and extremely low friction coefficient, despite a very low coefficient of friction dissipation of energy being noticeable, especially in large bearings. Lubricating systems of large tilting pad thrust bearings utilized in large, vertical shaft hydrogenerators are presented in this paper. A large amount of heat is generated due...

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• Micromechanical analysis of friction anisotropy in rough elastic contacts

  Publication

  • S. Stupkiewicz
  • M. Lewandowski
  • J. Lengiewicz

  - INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES - Year 2014

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• Alternative convolution approach to friction in unsteady pipe flow

  Publication

  • R. Szymkiewicz
  • M. Mitosek

  - JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME - Year 2014

  In the paper some aspects of the unsteady friction in pipe flow expressed by the convolution are analyzed. This additional term introduced into the motion equation involves the accelerations of fluid occurring in the past and a weighting function. The essence of such approach is to assume the appropriate form of weighting function. However, until now no fully reliable formula for this function has been found. To avoid some inconveniences...

• Experimental measurements of friction forces on the tissue in probabilistic view

  Publication

  • K. Wierzcholski

  - Journal of KONES - Year 2006

  Niniejsza praca jest poświęcona wyznaczaniu wartości sił tarcia wywołanych podczas hydrodynamicznego przepływu lepkosprężystej cieczy odżywczej na powierzchniach hodowanych chondrocytów w bioreaktorze. Badania realizuje się w nano skali przy wykorzystaniu mikroskopu sił atomowych. Chondrocyty hodujemy w celu naprawy uszkodzonych chrząstek stawowych kolana człowieka.

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• EFFECT OF THE BIO-LUBRICANT ON THE LUBRICATINGPROPERTIES AND SURFACE OF THE FRICTION ZONE

  Publication

  • J. Drabik
  • R. Kozdrach
  • E. Osuch-Słomka

  - TRIBOLOGIA - Year 2024

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• Comparative investigation of lubricant properties in friction and wear tests

  Publication

  • A. Neyman

  - Journal of KONES - Year 2002

  Opisano porównawcze badania obciążenia zacierania na tribometrze PT3, obciążenia zespawania na aparacie czterokulowym i zużycia frettingowego na stanowisku FRET3, sześciu olejów smarowych i sześciu smarów plastycznych. Próbki do badań na stanowiskach PT3 i FRET3 wykonane były ze stali 35.