Zobrazeno 1 - 10
of 209
pro vyhledávání: '"Roland Larsson"'
Publikováno v:
Nano-Micro Letters, Vol 14, Iss 1, Pp 1-13 (2022)
Abstract Triboelectric nanogenerators (TENGs) have potential to achieve energy harvesting and condition monitoring of oils, the “lifeblood” of industry. However, oil absorption on the solid surfaces is a great challenge for oil–solid TENG (O-TE
Externí odkaz:
https://doaj.org/article/665060fcb8ca4049bc2c9bef636737ee
Autor:
Kalle Kalliorinne, Gustav Hindér, Joakim Sandberg, Roland Larsson, Hans-Christer Holmberg, Andreas Almqvist
Publikováno v:
Lubricants, Vol 11, Iss 10, p 427 (2023)
In elite endurance sports, marginal differences in finishing times drive ongoing equipment improvement to enhance athlete performance. In cross-country skiing, researchers, since the 1930s, have faced the challenge of minimising the resistance caused
Externí odkaz:
https://doaj.org/article/b3059ee865eb463d88a00afcc7b3646a
Autor:
Kalle Kalliorinne, Bo N. J. Persson, Joakim Sandberg, Gustav Hindér, Roland Larsson, Hans-Christer Holmberg, Andreas Almqvist
Publikováno v:
Lubricants, Vol 11, Iss 5, p 225 (2023)
In winter sports, the equipment often comes into contact with snow or ice, and this contact generates a force that resists motion. In some sports, such as cross-country skiing, this resistive force can significantly affect the outcome of a race, as a
Externí odkaz:
https://doaj.org/article/ee55cd8e49ff4f71be60a6cd87e61e6a
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-16 (2020)
Abstract A ball-on-disc machine was employed in a highly idealised setting to study the interplay between oil film formation and surface irregularities in single-sided rough elasto-hydrodynamic lubricated (EHL) conjunctions. The tests were operated u
Externí odkaz:
https://doaj.org/article/674c64d190d74c4d86a6df6858def023
Autor:
Andreas Almqvist, Barbara Pellegrini, Nina Lintzén, Nazanin Emami, H-C Holmberg, Roland Larsson
Publikováno v:
Frontiers in Sports and Active Living, Vol 4 (2022)
Of the medals awarded at the 2022 Winter Olympics in Beijing, 24% were for events involving cross-country skiing, the biathlon and Nordic combined. Although much research has focused on physiological and biomechanical characteristics that determine s
Externí odkaz:
https://doaj.org/article/51bb5837b251440cb42e1e9a8e8e3abc
Publikováno v:
Machines, Vol 11, Iss 1, p 89 (2023)
This study explores the elastohydrodynamic lubrication (EHL) between the contacting tooth flanks of a worm gear with nonconjugate meshing action. The contact is characterized by a slender-like elliptical shape and high sliding. The geometry and conta
Externí odkaz:
https://doaj.org/article/ea8b303ff5c847bf95418844015c6e62
Publikováno v:
Applied Surface Science Advances, Vol 6, Iss , Pp 100176- (2021)
When a seal is applied to prevent leakage of a pressurized fluid it must be designed to sustain the hydrostatic load it is subjected to. One important aspect that the design must take into consideration is the possibility that the hydrostatic fluid l
Externí odkaz:
https://doaj.org/article/2d5cb2cde4484323804d85f22ac92cad
Autor:
Kalle Kalliorinne, Joakim Sandberg, Gustav Hindér, Roland Larsson, Hans-Christer Holmberg, Andreas Almqvist
Publikováno v:
Lubricants, Vol 10, Iss 11, p 279 (2022)
In a cross-country skiing competition, the time difference between the winner and the skier coming in at second place is typically very small. Since the skier spends much of the energy on overcoming resistive forces, a relatively small reduction in t
Externí odkaz:
https://doaj.org/article/f95b5124909648cfbd681bc0fd69af7e
Publikováno v:
Lubricants, Vol 10, Iss 9, p 223 (2022)
Wear is a complex phenomenon that depends on the properties of materials and their surfaces, as well as the operating conditions and the surrounding atmosphere. At the micro-scale, abrasive wear occurs as material removal due to plastic deformation a
Externí odkaz:
https://doaj.org/article/90cae6d3004b4ad0af3ddb92d1acb60c
Publikováno v:
Frontiers in Mechanical Engineering, Vol 6 (2021)
Predicting the contact mechanical response for various types of surfaces is and has long been a subject, where many researchers have made valuable contributions. This is because the surface topography has a tremendous impact on the tribological perfo
Externí odkaz:
https://doaj.org/article/ca89d1a2f7bb4a959e40057b6e82cbc1