Wyniki wyszukiwania dla: FRICTION INDUCED VIBRATION

• 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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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

  Dane Badawcze

  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.

• Chladni and circular saw disc vibrations visualisation

  Publikacja

  • L. Javorek
  • K. Orłowski

  - Rok 2011

  In this paper are described some methods for saw disc vibration monitoring in march of time (chronology). Ernst Chaldni, the father of sound visualisation and his patternsis are mentioned. In the last partof article are introduced results received with authors measuring systems.

• Experimental research on water lubricated marine stern tube bearings in conditions of improper lubrication and cooling causing rapid bush wear

  Publikacja

  • W. Litwin
  • C. Dymarski

  - TRIBOLOGY INTERNATIONAL - Rok 2016

  Water lubricated bearings are popular in sliding bearings of marine propeller shafts, turbines and pump shafts. Such popularity is partly due to their simple construction which also means a relatively affordable price. In practical experience one may also observe cases of rapid wear or even malfunctions of this bearings, some of which may be caused by insufficient flow of lubricant leading to overheating. The conducted...

  Pełny tekst do pobrania w portalu

• X-ray Photoelectron Spectroscopy (XPS) results of bulk boron and borophene after the ball-milling process

  Dane Badawcze

  open access

  • E. Mijowska
  • D. Baranowska

  These data contain X-ray Photoelectron Spectroscopy (XPS) results of boron and borophene nanoflakes induced during ball milling at rotation speed of 450 rpm, 6 h and mass loading of 1g. 

• Preliminary results from HEDGEHOG REXUS project – A sounding rocket experiment on accelerations, vibrations and heat flow

  Publikacja

  • A. Dąbrowski
  • K. Pelzner
  • S. R. Krawczuk
  • J. Goczkowski
  • A. Elwertowska

  - ACTA ASTRONAUTICA - Rok 2020

  During flight, a sounding rocket is subject to a unique environment - severe vibrations and substantial heat flux. In order to design payloads, precise measurement of these conditions is required. This paper presents preliminary results from HEDGEHOG REXUS Project, whose scientific goal was to characterise the thermal and dynamic environment of REXUS sounding rockets. For this purpose, two new sensors have been designed - mechanical...

  Pełny tekst do pobrania w portalu

• Optimization of the spindle speed during milling of large-sized structures with the use of technique of Experiment-Aided Virtual Prototyping

  Publikacja

  • K. J. Kaliński
  • M. Galewski
  • M. Mazur
  • N. Stawicka-Morawska

  - Rok 2019

  In the paper are presented considerations concerning vibration suppression problems during milling of large-sized workpieces with the use of innovative method of matching the spindle speed of cutting tool. It depends on repeatable change of the spindle speed value as soon as the optimal vibration state of the workpiece approaches. The values of dominant “peaks” in the frequency spectra and the Root Mean Square (RMS) values of time...

• Experimental dynamic study on a timber-frame house using shaking table

  Publikacja

  • M. Szczepański
  • R. Jankowski

  - Rok 2011

  The aim of this paper is to show the results of the shaking table experimental study concerning the behaviour of the model of the timber-frame house under earthquake excitation and impact loading. In order to determine the basic dynamic properties of the undamaged structure, the free vibration and the sweep-sine tests were first conducted. Then, the model was excited using the time history record of the El Centro earthquake of...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). No lubrication (DRY). Specim. set K04

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DRY. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test rig: TPZ-1...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). No lubrication (DRY). Specim. set K05

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DRY. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test rig: TPZ-1...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). No lubrication (DRY). Specim. set K03

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DRY. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test rig: TPZ-1...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). No lubrication (DRY). Specim. set K01

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DRY. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test rig: TPZ-1...

• Natalia Stawicka-Morawska dr inż.

  Osoby

  Instytut Mechaniki i Konstrukcji Maszyn

  Mgr inż. Natalia Stawicka-Morawska pracuje na Politechnice Gdańskiej od października 2017 r. na stanowisku Asystenta, na Wydziale Inżynierii Mechanicznej i Okrętownictwa (poprzednio: Wydziale Mechanicznym), w Instytucie Mechaniki i Konstrukcji Maszyn (poprzednio: Katedrze Mechaniki i Mechatroniki).Prowadzona przez nią działalność naukowa dotyczy dziedziny nauk technicznych w dyscyplinie naukowej budowa i eksploatacja maszyn. Główną...

• Inverse determination of sliding surface temperature based on measurements by thermocouples with account of their thermal inertia

  Publikacja

  • O. Nosko
  • Y. Tsybrii

  - TRIBOLOGY INTERNATIONAL - Rok 2021

  This study developed an inverse heat conduction algorithm to determine temperature at a sliding surface taking account of thermocouple thermal inertia. The direct heat conduction problem was solved analytically based on the Laplace integral transform approach. The inverse algorithm was applied to the problem of friction of a brake material against a steel. The experiments were conducted on a pin-on-disc tribometer for three short-time...

  Pełny tekst do pobrania w portalu

• Jednoelektronowy atom Diraca w słabym polu magnetycznym

  Publikacja

  • P. Stefańska-Ptaszek

  - Rok 2014

  W rozprawie przedstawiono opis wpływu zewnętrznego stałego, słabego, jednorodnego pola magnetycznego na jednoelektronowy atom Diraca. Wykorzystując funkcje gęstości ładunku elektrycznego oraz gęstości prądu elektrycznego, rozważono procesy indukowania się w atomie dodatkowych elektromagnetycznych momentów multipolowych. Dokonano analizy indukowanego momentu dipolowego, w wyniku której uzyskano wyrażenie dla magnetyzowalności atomu....

  Pełny tekst do pobrania w serwisie zewnętrznym

• Dynamika bezzałogowego aparatu latającego w układzie czterowirnikowego pionowzlotu

  Publikacja

  • H. Olszewski
  • M. Szypulewski

  - Rok 2012

  Działanie maszyn, w tym również pojazdów latających, jest nieodłącznie związane z przekazywaniem oddziaływań siłowych: statycznych i dynamicznych. Dynamika jest działem mechaniki zajmującym się makroskopowym ruchem ciał przy uwzględnieniu przyczyn wywołujących ten ruch. Pierwszym etapem analizy dynamiki konstrukcji są zwykle obliczenia wartości i postaci drgań własnych modelu konstrukcji. Drgania własne zwykle ulegają szybkiemu...

• Numerical Modeling of Cone Penetration Test in Slightly Overconsolidated Clay with Arbitrary Lagrangian-Eulerian Formulation

  Publikacja

  • J. Konkol
  • L. Bałachowski

  - Procedia Engineering - Rok 2017

  In this paper the results of the cone penetration test (CPT) modeling with the arbitrary Lagrangian-Eulerian (ALE) formulation provided by Abaqus software package have been presented. The study compares the cone resistance and sleeve friction obtained in numerical analysis with values measured in soundings performed in the uniform layer of clayey soil in the Koszalin area. The clay layer was found to be slightly overconsolidated...

  Pełny tekst do pobrania w portalu

• Performance of acicular grindable thermocouples for temperature measurements at sliding contacts

  Publikacja

  • O. Nosko
  • W. Tarasiuk
  • Y. Tsybrii
  • A. Nosko
  • A. Senatore
  • V. D'Urso

  - MEASUREMENT - Rok 2021

  The present study investigates the performance of acicular grindable thermocouples based on a constantan wire / steel hollow cylinder construction. The experiments showed that the measuring junction electrical resistance, temperature–voltage characteristic, measuring junction rise time and signal noise standard deviation of the acicular thermocouples are comparable to those of conventional J-type thermocouples with bare wire diameter...

  Pełny tekst do pobrania w portalu

• The effect of depth of surface layers constituted by vacuum technologies on pitting

  Publikacja

  • B. Majkowska-Marzec
  • W. Piekoszewski
  • M. Szczerek
  • E. Wołowiec

  - Archives of Materials Science and Engineering - Rok 2013

  The paper presents the results of a study of the effect of vacuum technologies of formation of surface layers on pitting of associated elements in a lubricated, heavy-load rolling contact. The study has shown that increase in a PVD coat depth is accompanied by decrease in the fatigue friction pair.

  Pełny tekst do pobrania w portalu

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). Lubricant - DISTILLED WATER. Specim. set K07

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DISTILLED WATER. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). Lubricant - DISTILLED WATER. Specim. set K06

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DISTILLED WATER. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). Lubricant - PARAFFIN OIL. Specim. set K08

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: PARAFFIN OIL. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test rig:...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). Lubricant - DISTILLED WATER. Specim. set K02

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DISTILLED WATER. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). Lubricant - PARAFFIN OIL. Specim. set K09

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: PARAFFIN OIL. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test rig:...

• Optical microsc. images of wear marks on ball (JPG). Reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%). Lubricant - DISTILLED WATER. Specim. set K06

  Dane Badawcze

  open access

  • J. Łubiński
  • K. Druet

  - seria: Wear in reciprocating siding friction tests. Ball-on-flat contact. Sintered alumina ceramics (98%).

  Optical microscope images of wear zone on the 5mm diam. ceramic ball used in tests as the fixed specimen.Friction and wear tests in ball-on-flat contact. Both specimens made of sintered alumina ceramics (98%) - self-mated contact.Linear reciprocating motion.Lubrication: DISTILLED WATER. Sliding velocity (peak): 0.1 m/s. Load (normal force): 5N. Test...

• Mechanism of Isomerization and Acid-Induced Transformations of 3-Hydroxy-4,4'-dimethoxy-3'-methyl-3-oxo-7,7'-bis(piperidino-carbonyloxy)-2,2'-spirobi-[2H,2'H,3H,3'H-benzo[b]thiophene]. Unusual Equilibrium between the Spiro and 3-Hydroxy-benzothiophene Systems.

  Publikacja

  • M. T. Konieczny
  • P. Sowiński

  - BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN - Rok 2009

  Stwierdzono, że 3'-hydroksy-4,4'-dimetoksy-3'-metylo-3-okso-7,7'-bis(piperydynokarbonyloksy)-2,2'-spirobi[2H,2'H,3H,3'H-benzo[b]tiofen] występuje w roztworach postaci mieszaniny dwóch diastereoizomerów pozostających w dynamicznej równowadze. Mechanizm tej równowagi oparty jest na odwracalnym otwarciu pierścienia z 1,5 przeniesieniem protonu i utworzeniu przjściowej formy 3-hydroksybenzotiofenu.

  Pełny tekst do pobrania w serwisie zewnętrznym

• Review of titanium and steel welding methods

  Publikacja

  • K. Szymlek

  - Advances in Materials Science - Rok 2008

  The paper presents review of methods of titanium and steel welding. On basis of professional literature it was stated that titanium can be joined with steel by means of explosive welding or brazing.Joining titanium with steel by TIG welding and friction welding methods is possible with the use of copper and tantalum or vanadium interlayer.

  Pełny tekst do pobrania w portalu

• Considerations about the applicability of the Reynolds equation for analyzing high-speed near field levitation phenomena

  Publikacja

  • N. Brunetière
  • M. Wodtke

  - JOURNAL OF SOUND AND VIBRATION - Rok 2020

  equation for analyzing near field levitation (NFL) phenomena. Two separate approaches were developed, experimentally verified, and applied to meet the research objective. One was based on the Reynolds equation and the other was based on general conservation equations for fluid flow solved using computational fluid dynamic (CFD). Comparing the calculation results revealed that, for certain operating conditions, differences in the...

  Pełny tekst do pobrania w portalu

• Stability of Discrete Fractional Order State-space Systems

  Publikacja

  • A. Dzieliński
  • D. Sierociuk

  - JOURNAL OF VIBRATION AND CONTROL - Rok 2008

  Pełny tekst do pobrania w serwisie zewnętrznym

• Wave propagation modelling in 1D structures using spectral finite elements

  Publikacja

  • P. Kudela
  • M. Krawczuk
  • W. Ostachowicz

  - JOURNAL OF SOUND AND VIBRATION - Rok 2007

  W artykule omówiono modele propagacji fal wzdłużnych i poprzecznych w prętach oparte na dwóch sformułowaniach (w dziedzinie częstości i w dziedzinie czasu) metody elemntów spektralnych. Porównano otrzymane wyniki z wynikami eksperymentu.

  Pełny tekst do pobrania w serwisie zewnętrznym

• Modelling of wave propagation in composite plates using the time domain spectral element method

  Publikacja

  • P. Kudela
  • A. Żak
  • M. Krawczuk
  • W. Ostachowicz

  - JOURNAL OF SOUND AND VIBRATION - Rok 2007

  W pracy przedstawiono wyniki obliczeń propagacji fali sprężystej w płycie kompozytowej modelowanej z wykorzystaniem czasowego sformułowania metody elementów spektralnych

  Pełny tekst do pobrania w serwisie zewnętrznym

• The dynamic analysis of a cracked Timoshenko beam by the spectral element method

  Publikacja

  • M. Krawczuk
  • M. Palacz
  • W. Ostachowicz

  - JOURNAL OF SOUND AND VIBRATION - Rok 2003

  Pełny tekst do pobrania w serwisie zewnętrznym

• Longitudinal wave propagation. Part I—Comparison of rod theories

  Publikacja

  • M. Krawczuk
  • J. Grabowska
  • M. Palacz

  - JOURNAL OF SOUND AND VIBRATION - Rok 2006

  Pełny tekst do pobrania w serwisie zewnętrznym

• Wave propagation in a sensor/actuator diffusion bond model

  Publikacja

  • B. Lee
  • M. Palacz
  • M. Krawczuk
  • W. Ostachowicz
  • W. Staszewski

  - JOURNAL OF SOUND AND VIBRATION - Rok 2004

  Pełny tekst do pobrania w serwisie zewnętrznym

• Longitudinal wave propagation. Part II—Analysis of crack influence

  Publikacja

  • M. Krawczuk
  • J. Grabowska
  • M. Palacz

  - JOURNAL OF SOUND AND VIBRATION - Rok 2006

  Pełny tekst do pobrania w serwisie zewnętrznym

• Experimental and numerical study on damage detection in an L-joint using guided wave propagation

  Publikacja

  • M. Rucka

  - Journal of Sound and Vibration - Rok 2010

  Pełny tekst do pobrania w serwisie zewnętrznym

• Assessment of rod behavior theories used in spectral finite element modeling

  Publikacja

  • A. Żak
  • M. Krawczuk

  - JOURNAL OF SOUND AND VIBRATION - Rok 2010

  W pracy przedstawiono teorie prętów i przedstawiono ich przydatnośc w analizie propagacji fal sprężystych z wykorzystaniem metody spektralnych elementów skończonych.

  Pełny tekst do pobrania w portalu

• Experimental and numerical study on damage detection in an L-joint using guided wave propagation

  Publikacja

  • M. Rucka

  - JOURNAL OF SOUND AND VIBRATION - Rok 2010

  W pracy zaprezentowano metodę wykrywania i lokalizacji uszkodzeń w konstrukcji ramowej za pomocą podłużnych i poprzecznych fal sprężystych. Przeprowadzono badania numerczyne i eksperymentalne na modelu bez uszkodzenia oraz na modelu z wsprowadzonym nacięciem. Do modelowania zastosowano metodę elementów spektralnych. W pracy przedstawiono sformułowanie nowego element spektralnego dla ram płaskich bazującego na teorii pręta Mindlina...

  Pełny tekst do pobrania w serwisie zewnętrznym

• The Method of Reduction of Aerodynamic Forces Generated in Turbine Blade Seals

  Publikacja

  • K. Kosowski
  • R. Stępień

  - Advances in Vibration Engineering - Rok 2011

  Opisano metodę zmniejszania sił wymuszających drgania aerodynamiczne poprzez zastosowanie nowego uszczelnienia nadbandażowego typu komorowego. Efektywność stosowania uszczelnienia komorowego potwierdzono obliczeniami numerycznymi i badaniami eksperymentalnymi.

• Performance Characteristics of a Micro-Turbine

  Publikacja

  • K. Kosowski
  • W. Włodarski
  • M. Piwowarski
  • R. Stępień

  - Advances in Vibration Engineering - Rok 2014

  In the paper a design of a multi-stage micro-turbine with partial admission of all the stages is described in detail and the results of particular experimental investigations and numerical calculations are shown, followed by conclusions. The co-generative micro-power plant with the HFE7100 as a working medium was designed and built for experimental investigations. The values of the main cycle parameters were as follows:heat output:...

• Partial Admission Stages of High Efficiency for a Microturbine

  Publikacja

  • K. Kosowski
  • R. Stępień
  • W. Włodarski
  • M. Piwowarski
  • Ł. Hirt

  - Advances in Vibration Engineering - Rok 2014

  The paper presents the results of a design analysis of a microturbine for a cogeneration micro-power plant working in accordance with organic Rankine cycle. The heat power of the plant is assumed equal to 20kW and the corresponding available electric output is estimated to be about 3 kW. After the design analysis, the axial turbine with partial admission in all stages was built and tested experimentally. Special attentionwas paid...