Wyniki wyszukiwania dla: SURFACE%20STRESSES

• APPLIED SURFACE SCIENCE

  Czasopisma

  ISSN: 0169-4332 , eISSN: 1873-5584

• Bending of a Three-Layered Plate with Surface Stresses

  Publikacja

  • H. Altenbach
  • V. Eremeev

  - Rok 2018

  We discuss here the bending deformations of a three-layered plate taking into account surface and interfacial stresses. The first-order shear deformation plate theory and the Gurtin-Murdoch model of surface stresses will be considered and the formulae for stiffness parameters of the plate are derived. Their dependence on surface elastic moduli will be analyzed.

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• Microstructure and residual stresses in surface coatings with PTFE reservoirs

  Publikacja

  • M. Yamane
  • T. Stolarski

  - TRIBOLOGY LETTERS - Rok 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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• On Nonlinear Dynamic Theory of Thin Plates with Surface Stresses

  Publikacja

  • H. Altenbach
  • V. Eremeev

  - Rok 2019

  We discuss the modelling of dynamics of thin plates considering surface stresses according to Gurtin–Murdoch surface elasticity. Taking into account the surface mass density we derive the two-dimensional (2D) equations of motion. For the reduction of the three-dimensional (3D) motion equations to the 2D ones we use the trough-the-thickness integration procedure. As a result, the 2D dynamic parameters of the plate depend not only...

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• On stress singularity near the tip of a crack with surface stresses

  Publikacja

  • N. Gorbushin
  • V. Eremeev
  • G. Mishuris

  - INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE - Rok 2020

  In the framework of the simplified linear Gurtin–Murdoch surface elasticity we discuss a singularity of stresses and displacements in the vicinity of a mode III crack. We show that inhomogeneity in surface elastic properties may significantly affect the solution and to change the order of singularity. We also demonstrate that implicitly or explicitly assumed symmetry of the problem may also lead to changes in solutions. Considering...

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• Comparison of anti-plane surface waves in strain-gradient materials and materials with surface stresses

  Publikacja

  • V. Eremeev
  • G. Rosi
  • S. Naili

  - MATHEMATICS AND MECHANICS OF SOLIDS - Rok 2019

  Here we discuss the similarities and differences in anti-plane surface wave propagation in an elastic half-space within the framework of the theories of Gurtin–Murdoch surface elasticity and Toupin–Mindlin strain-gradient elasticity. The qualitative behaviour of the dispersion curves and the decay of the obtained solutions are quite similar. On the other hand, we show that the solutions relating to the surface elasticity model...

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• SURFACE & COATINGS TECHNOLOGY

  Czasopisma

  ISSN: 0257-8972

• Influence of Surface Laser Treatment on Mechanical Properties and Residual Stresses of Titanium and its Alloys

  Publikacja

  • M. Jażdżewska
  • B. Majkowska-Marzec
  • R. Ostrowski
  • J. Olive

  - Advances in Science and Technology Research Journal - Rok 2023

  Surface modification of the titanium and its alloys used in implantology with a long-pulse laser can change the surface topography, but it also leads to changes in the stress sign and magnitude in the resulting subsurface layer. The presented research was aimed at evaluating the state of stress after laser remelting with the Nd:YAG laser of pre-etched titanium alloys Ti6Al4V and Ti13Nb13Zr and pure titanium. The obtained surface...

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• Effects of CO2 and Nd:YAG Laser Remelting of the Ti6Al4V Alloy on the Surface Quality and Residual Stresses

  Publikacja

  • M. Jażdżewska

  - Advances in Materials Science - Rok 2020

  The titanium alloys are materials susceptible to tribological wear and the laser treatment can be applied in surface treatment processes to obtain for example higher hardness level. From the other side, it is important to take into consideration, that hardness increase that can be connected with cracks . The aim of this research was to investigate the effects of different lasers and the process parameters on the form and level...

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• Application of the Finite Element Method for Modelling of the Spatial Distribution of Residual Stresses in Hybrid Surface Layers

  Publikacja

  • T. Tański
  • K. Labisz
  • W. Borek
  • M. Staszuk
  • Z. Brytan
  • Ł. Krzemiński

  - Rok 2015

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