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Lubricants, Volume 10, Issue 9

September 2022 - 28 articles

Cover Story: Low-loss gears are an interesting design approach aimed at increasing the efficiency and thermal load limits of gearboxes. The loss-optimized gear geometry concentrates sliding around the pitch point, which results in low load-dependent gear power losses. A method for modeling transient EHL contacts in gear mesh considering mixed lubrication and thermal effects is introduced and applied to analyze the tribological behavior of a low-loss gear geometry. Special focus is placed on local frictional losses to analyze the role of the thermal effects of the gear mesh. View this paper
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Articles (28)

  • Article
  • Open Access
1 Citations
2,201 Views
17 Pages

19 September 2022

Aseptic loosening caused by the wear and tear of the artificial joint prosthesis after implantation is one of the main causes of artificial joint failure. Therefore, it is important to investigate the wear debris generated due to wear when developing...

  • Article
  • Open Access
5 Citations
3,446 Views
22 Pages

19 September 2022

Wet clutch engagement is mainly influenced by the frictional behaviors between the friction pad and steel plate as well as the lubrication behaviors. A positive μ–V friction coefficient of the wet clutch pad is the most preferable characteri...

  • Article
  • Open Access
4 Citations
2,061 Views
16 Pages

Rheological Behavior of Different Calf Sera before, during and after Biomechanical Testing

  • Maximilian Uhler,
  • Mareike Schonhoff,
  • Timo A. Nees,
  • Tanja Wonerow,
  • Jens Nuppnau,
  • Frank Mantwill,
  • Jan Philippe Kretzer and
  • Stefan Schroeder

15 September 2022

Due to different rheological behavior of human synovial fluid and the test mediums for in vitro examinations, wear tests cannot replicate the in vivo situation completely. The standards for wear testing indicate calf serum as in vitro test medium. Ho...

  • Article
  • Open Access
6 Citations
3,562 Views
16 Pages

14 September 2022

This paper presents a method to simulate the dynamic operating characteristics of a gas foil thrust bearing based on linear elastic support and constant ambient temperature to mimic the transient structure–fluid interactions. In the physical mo...

  • Article
  • Open Access
10 Citations
3,319 Views
23 Pages

14 September 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...

  • Article
  • Open Access
5 Citations
2,132 Views
13 Pages

10 September 2022

For investigating the effect of mullite as a reinforced fiber of the non-asbestos brake friction material on the performance of brake pads, mullite reinforced composites with different contents (5% and 10%) and shapes (powder-based and fiber-based) w...

  • Article
  • Open Access
5 Citations
2,225 Views
17 Pages

Utilization of Metallurgical Slags in Cu-free Friction Material Formulations

  • Vlastimil Matějka,
  • Priyadarshini Jayashree,
  • Mara Leonardi,
  • Jozef Vlček,
  • Tomáš Sabovčík and
  • Giovanni Straffelini

10 September 2022

The aim of our research was to indicate the suitability of metallurgical slags (two blast furnace slags and one steel furnace slag) as the components of Cu-free friction materials. The base mixture consisted of nine components including phenolic resi...

  • Article
  • Open Access
21 Citations
4,582 Views
16 Pages

9 September 2022

Tool wear behavior is mainly influenced by cutting parameters for a given tool–workpiece pair and cutting process. Rapid tool wear increases production costs and deteriorates machining quality in manufacturing industries. Inconel 718 is prone t...

  • Article
  • Open Access
2,393 Views
12 Pages

8 September 2022

Silkiness is an extremely important attribute in high-end chocolate, and tribology is one of the commonly used methods of evaluating certain properties of the relevant food. In this study, based on three commercial chocolates of the same brand, the s...

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Lubricants - ISSN 2075-4442