Search results for: SLIDING

• SiC coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #B37/#A35

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of SiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, SiC over SiC . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 3 min.Secimen...

• TiC coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #A39/#B41

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of TiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiC over TiC . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 3 min.Secimen...

• SiC coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #A35/#B37

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of SiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, SiC over SiC . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 3 min.Secimen...

• TiN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #B48/#A45

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of TiN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiN over TiN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 12 min....

• TiC coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #B41/#A39

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of TiC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiC over TiC . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 9 min....

• TiN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #A45/#B48

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of TiN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, TiN over TiN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 12 min....

• CrN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #A25/#B21

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of CrN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, CrN  over CrN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 9 min....

• CrN coating in ring-on-ring sliding with saline solution (0.9%) lubrication 5MPa, 0.1m/s specimn. #B21/#A21

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  - series: Wear of ultra thin PVD ceramic coatings on stainless steel in ring-on-ring sliding w. saline solution (0.9%) lubrication

  Wear tests in sliding friction of CrN coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, CrN  over CrN . Mean contact stress: 5MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9%). Tribometer: PT-3. Overall test time till coating penetration 25 min....

• DLC coating doped with W in ring-on-ring sliding with saline solution (0.9% wt.) lubrication 20MPa/0.1m/s

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  Wear tests in sliding friction of 1% W (tungsten) doped DLC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, DLC-W over DLC-W. Mean contact stress: 20MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9% wt.). Tribometer: PT-3. Overall test time >15h....

• DLC coating doped with W in ring-on-ring sliding with saline solution (0.9% wt.) lubrication 10MPa/0.1m/s

  Open Research Data

  open access

  • A. Neyman
  • J. Łubiński
  • A. Olszewski
  • K. Druet

  Wear tests in sliding friction of 1% W (tungsten) doped DLC coating on 1.4021 (EN 10088-1) heat treated stainless steel. Ring - on - ring contact in unidirectional sliding, DLC-W over DLC-W. Mean contact stress: 10MPa. Sliding velocity: 0,1 m/s. Mean friction radius: 9.5mm. Lubricant: SALINE SOLUTION (0.9% wt.). Tribometer: PT-3. Overall test time >15h....

• Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #24 - #25.

  Open Research Data

  open access

  • J. Łubiński
  • T. Łubiński
  • K. Druet

  - series: Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics. Paraffin oil lubrication.

  Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #24 (upper, rotating), #25 (lower, non-rotating)CZ_PRZYS.MAT - accelerometerMOM_TAR.MAT...

• Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #28 - #29.

  Open Research Data

  open access

  • J. Łubiński
  • T. Łubiński
  • K. Druet

  - series: Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics. Paraffin oil lubrication.

  Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #28 (upper, rotating), #29 (lower, non-rotating)CZ_PRZYS.MAT - accelerometerMOM_TAR.MAT...

• Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #30 - #31.

  Open Research Data

  open access

  • J. Łubiński
  • T. Łubiński dr inż.
  • K. Druet

  - series: Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics. Paraffin oil lubrication.

  Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #30 (upper, rotating), #31 (lower, non-rotating)CZ_PRZYS.MAT - accelerometerMOM_TAR.MAT...

• Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #20 - #21.

  Open Research Data

  open access

  • J. Łubiński
  • T. Łubiński
  • K. Druet

  - series: Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics. Paraffin oil lubrication.

  Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #20 (upper, rotating), #21 (lower, non-rotating)CZ_PRZYS.MAT - accelerometerMOM_TAR.MAT...

• Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #22 - #23.

  Open Research Data

  open access

  • J. Łubiński
  • T. Łubiński
  • K. Druet

  - series: Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics. Paraffin oil lubrication.

  Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #22 (upper, rotating), #23 (lower, non-rotating)CZ_PRZYS.MAT - accelerometerMOM_TAR.MAT...

• Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #28 - #29.

  Open Research Data

  open access

  • J. Łubiński
  • T. Łubiński dr inż.
  • K. Druet

  - series: Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics. Paraffin oil lubrication.

  Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #28 (upper, rotating), #29 (lower, non-rotating)CZ_PRZYS.MAT - accelerometerMOM_TAR.MAT...

• Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics (98%). Paraffin oil lubrication. Specimen set #26 - #27.

  Open Research Data

  open access

  • J. Łubiński
  • T. Łubiński
  • K. Druet

  - series: Specimen running-in. Prep. to sliding friction tests. Ring-on-ring contact. Sintered alumina ceramics. Paraffin oil lubrication.

  Specimen running-in procedure. Preparation to sliding friction tests in ring-on-ring contact. Sintered alumina ceramics (98%) in self-mated contact. Lubrication: paraffin oil. Sliding velocity: 0.2 m/s. Mean contact stress: 10 MPa. Test rig: PT-3 Tribometer. Specimen set #26 (upper, rotating), #27 (lower, non-rotating)CZ_PRZYS.MAT - accelerometerMOM_TAR.MAT...

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_v_2

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_v_3

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_h_3

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_v_5

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_h_5

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_h_4

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_h_4

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_v_4

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_5

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_v_4

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 009_v_4

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_v_3

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_v_3

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_3

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_h_5

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_4

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_v_2

  Open Research Data

  open access

  • K. Suwińska
  • J. Łubiński

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 039_h_3

  Open Research Data

  open access

  • J. Łubiński
  • K. Suwińska

  Data gathered in sliding ring-on-block (flat contact) tribological experiment. Materials: alloy steel (heat treated) vs. ABS plastic.

• Wojciech Litwin dr hab. inż.

  People

  Zakład Wyposażenia Okrętu, Faculty of Mechanical Engineering and Ship Technology, Institute of Ocean Engineering and Ship Technology

  1992÷1996 - study on Mechanical Department at Gdansk University of Technology1996 – employed in the Faculty of Ocean Engineering and Ship Technology at the Gdansk University of Technology2004 – PhD2014 – habilitation2016 - vice dean for science at Faculty of Ocean Engineering2020 - dean of the Faculty of Ocean Engineering2021 - head of Institute of Naval Architecture He participated in a number of designing and research programs...

• Influence of magnetic field on wear in high frequency reciprocatingsliding contacts

  Publication

  • T. Stolarski
  • Y. Makida

  - TRIBOLOGY INTERNATIONAL - Year 2011

  Results of experimental studies concerning the influence of permanent magnetic field on wear of dry sliding contact operating at short stroke and high frequency are presented. It was found that horizontal magnetic field with different orientations relative to the sliding direction is affecting performance of the contact. The increase in frequency of sliding reduces accumulated mass loss and lowers the surface roughness of the wear...

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• Microstructure and residual stresses in surface coatings with PTFE reservoirs

  Publication

  • M. Yamane
  • T. Stolarski

  - TRIBOLOGY LETTERS - Year 2013

  The paper presents the results of experimental study into the microstructure and changes in residual stresses resulting from sliding and rolling/sliding loaded interaction between metallic surface coatings with embedded PTFE reservoirs and various counter faces. It was found that before testing surface coatings had compressive residual stresses. Molybdenum coating with all types of PTFE reservoirs displayed, as a result of testing,...

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• Tribological Properties of Thermoplastic Materials Formed by 3D Printing by FDM Process

  Publication

  • J. Łubiński

  - Year 2022

  The dataset entitled 3D printed ABS thermoplastic vs. steel. Dry sliding wear test in constant load & velocity ring on flat configuration. Test parameters: print layer thickness and orientation. Test symbol: 019_h_4 contains: the time base (expressed in seconds and minutes), the friction torque for sliding friction, rotational velocity of the counter – specimen (velocity of sliding), friction coefficient, load in the friction contact...

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• Rotating rod and ball

  Publication

  • S. Kryzhevich
  • A. Plakhov

  - JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS - Year 2024

  We consider a mechanical system consisting of an infinite rod (a straight line) and a ball (a massless point) on the plane. The rod rotates uniformly around one of its points. The ball is reflected elastically when colliding with the rod and moves freely between consecutive hits. A sliding motion along the rod is also allowed. We prove the existence and uniqueness of the motion with a given position and velocity at a certain time...

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• The Impact Of The Selected Parameters Of Fdm Manufacturing Technology On Tribological Performance Of Abs–Steel Pair Under Dry Friction

  Publication

  • K. Suwińska
  • J. Łubiński

  - TRIBOLOGIA - Year 2020

  The paper presents the result of tribological test of ABS and steel samples sliding under dry friction. Polymeric samples were manufactured of ABS material using FDM technology. Testing was carried out in unidirectional sliding in a ring-on-flat contact in a PT-3 tribometer. The scope of tested parameters included volumetric and mass wear, the friction coefficient, and polymeric specimen temperature. Polymeric specimens used in...

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• Wpływ wybranych właściwości maszyny badawczej na wynik eksperymentu tribologicznego z tarciem ślizgowym

  Publication

  • J. Łubiński

  - Year 2017

  Niniejsza monografia stanowi podsumowanie przekrojowych badań związanych z wpływem właściwości stanowiska badawczego (tribometru) na przebieg i rejestrowane wyniki eksperymentu tribologicznego z tarciem ślizgowym ciał stałych smarowanych cieczą w warunkach tarcia bez efektów smarowania hydrodynamicznego. Autor przedstawia wyniki kompleksowych analiz właściwości dynamicznych stanowiska badawczego w kontekście efektów obserwowanych...

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• Theoretical study of thermofrictional oscillations due to negative friction-temperature characteristic

  Publication

  • O. Nosko
  • T. Nagamine
  • H. Mori
  • Y. Sato

  - TRIBOLOGY INTERNATIONAL - Year 2013

  Analytical study on oscillations of a body on a moving counterbody has been done by assuming imperfect frictional thermal contact and friction that decreases with contact temperature. It has been shown that stick-slip oscillation occurs due to decrease of friction coefficient when the body moves in the opposite direction to the counterbody. Dynamical characteristics, such as conditions for stable sliding and limit cycles, have...

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• Contact with coupled adhesion and friction: Computational framework, applications, and new insights

  Publication

  • J. C. Mergel
  • J. Scheibert
  • R. Sauer

  - JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS - Year 2021

  Contact involving soft materials often combines dry adhesion, sliding friction, and large deformations. At the local level, these three aspects are rarely captured simultaneously, but included in the theoretical models by Mergel et al., (2019). We here develop a corresponding finite element framework that captures 3D finite-strain contact of two deformable bodies. This framework is suitable to investigate sliding friction even...

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• Comments on “Closed Form Variable Fractional Time Delay Using FFT”

  Publication

  • M. Blok

  - IEEE SIGNAL PROCESSING LETTERS - Year 2013

  In this letter drawbacks of the aforementioned paper are pointed out. The proposed approach is improved with minor modifications of the discrete frequency response. This allows for design of fractional delay filters which are close to optimal and can be efficiently implemented in the frequency domain using the sliding DFT based structure. Alternatively, the derived equivalent closed form formulae for offset windows can be used...

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• MRAS-Based Switching Linear Feedback Strategy for Sensorless Speed Control of Induction Motor Drives

  Publication

  • M. A. Fnaiech
  • J. Guziński
  • M. Trabelsi
  • A. Kouzou
  • M. Benbouzid
  • K. Łuksza

  - ENERGIES - Year 2021

  This paper presents a newly designed switching linear feedback structure of sliding mode control (SLF-SMC) plugged with an model reference adaptive system (MRAS) based sensorless fieldoriented control (SFOC) for induction motor (IM). Indeed, the performance of the MRAS depends mainly on the operating point and the parametric variation of the IM. Hence, the sliding mode control (SMC) could be considered a good control alternative...

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• Comparison of the characteristics of journal bearings determined according to ISO 7902:2020 and obtained by other methods

  Publication

  • J. Smykla
  • M. Fillon
  • A. Olszewski
  • T. Żochowski
  • L. Gałda

  - PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY - Year 2022

  The article presents selected characteristics of journal bearings calculated with the use of various methods and compared to the results obtained with application of the basic bearing characteristics calculation procedure, as described in the ISO 7902:2020 standard. Additionally, the presented calculation results were compared with the parameters measured during experimental tests of the sliding bearings, working under loads and...

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• A pin-on-disc study of airborne wear particle emissions from studded tyre on concrete road contacts

  Publication

  • U. Olofsson
  • M. Tu
  • O. Nosko
  • Y. Lyu
  • S. Dizdar

  - WEAR - Year 2018

  Studded tyres wear surfaces of winter roads, generating inhalable airborne particles. In this study, four concrete road materials and two stud geometries were investigated in terms of wear, road material hardness and airborne particle concentration. The sliding contact between studded tyres and road materials was studied using a pin-on-disc machine in a clean chamber. The results show that the normal load and the stud size have...

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• Finite-window RLS algorithms

  Publication

  • L. Shen
  • Y. Zakharov
  • M. Niedźwiecki
  • A. Gańcza

  - SIGNAL PROCESSING - Year 2022

  Two recursive least-squares (RLS) adaptive filtering algorithms are most often used in practice, the exponential and sliding (rectangular) window RLS algorithms. This popularity is mainly due to existence of low-complexity versions of these algorithms. However, these two windows are not always the best choice for identification of fast time-varying systems, when the identification performance is most important. In this paper, we...

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• Tribological test for evaluation of Natural PEEK

  Open Research Data

  open access

  • T. Żochowski

  Test of PEEK natural (beige color) samples with sliding speed up to 1,2 m/s and up to 8 MPa of nominal load