Essays about: "tribological testing"

Showing result 21 - 25 of 27 essays containing the words tribological testing.

1. 21. Tribological testing of DLC coatings for automotive applications

   University essay from Tillämpad materialvetenskap

   Author : Viktor Renman; [2012]
   Keywords : DLC; wear; friction; tribology; diamond-like carbon; automotive; engine oils; fuels;

   Abstract : In this work, the friction and wear behavior of three DLC coatings was evaluated in various conventional and alternative fuels as well as in commercially available formulated engine oils and additive-free synthetic oil. The first DLC has a thin top-coating of hydrogenated amorphous carbon (a-C:H), the second consists of Si-doped DLC (a-C:H:Si) and the third is a W-doped multilayered structure of a-C:H and a-C:H:W. READ MORE

3. 22. A wear test mimicking the tribological situation in rock drilling

   University essay from Tillämpad materialvetenskap

   Author : Anna From; [2012]
   Keywords : tribological testing; wear test; cemented carbide; rock drilling;

   Abstract : This thesis work is performed at Sandvik Mining Rock Tools, a world leading supplier of rock drilling tools. The work is part of developing a new tribological wear test method for cemented carbide drill bit inserts. READ MORE

4. 23. Tribological testing of rotary drill bit inserts

   University essay from Tillämpad materialvetenskap

   Author : Johan Wallin; [2012]
   Keywords : tribological testing; drill bit inserts; cemented carbides; rotary drilling;

   Abstract : The aim of this thesis work was to design and evaluate a wear test method for cemented carbides inserts used in rotary drilling. An appropriate in-house wear test method would provide a better understanding of the wear mechanisms limiting tool life in real drilling. READ MORE

5. 24. Tribological Performance of PTFE Composites at Breakaway in Sliding Lubricated Contacts

   University essay from

   Author : Arash Golchin; [2011]
   Keywords : Technology; PTFE; Babbitt; breakaway; Teknik;

   Abstract : Babbitt has long been used as the lining material in hydrodynamic sliding bearings. However, with the new operating conditions imposed on hydro-electric power plants due to grid frequency regulation, the power plants undergo more frequent starts and stops which increases the need for an alternative material with better friction characteristics at start-up compared to conventionally used white-metal (Babbitt). READ MORE

6. 25. Tribological testing of drill bit inserts

   University essay from Tillämpad materialvetenskap

   Author : Jakob Oskarsson; [2011]
   Keywords : tribological testing; drill bit inserts; cemented carbide wear;

   Abstract : This thesis work sought to find a tribological testing method suitable for cementedcarbide drill bit inserts used when drilling rock. A review of the literature publishedon the matter showed that there are quite a few test methods developed for wearstudies with cemented carbides, but most of them were not designed for the rockdrilling industry. READ MORE