Sökning: "Tribology"

Visar resultat 6 - 10 av 81 uppsatser innehållade ordet Tribology.

1. 6. Design of a test rig for in situ hydrogen charging of rolling element bearings under load

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Maskinelement

   Författare :Oskar Moström; [2023]
   Nyckelord :tribology; hydrogen embrittlement; mechanical engineering; rolling element bearing; machine elements; design; mechanical design; CAD; mechanical construction; construction; material science; Tribologie; Wasserstoffversprödung; Maschinenbau; Wälzlager; Maschinenelemente; Design; Maschinenkonstruktion; CAD; mechanischer Bau; Konstruktion; Materialwissenschaft; tribologi; väteförsprödning; maskinteknik; rullningselementlager; maskinelement; design; mekanisk design; CAD; mekanisk konstruktion; konstruktion; materialvetenskap; lager;

   Sammanfattning : This Master's thesis is part of the Hydrogen Embrittlement in Rolling element bearings project (HERo) initiated at Luleå University of Technology (LTU), with the primary objective of determining critical hydrogen concentrations in bearing steel for rolling element bearings. The specific aim of this Master's thesis is to design a test rig that enables the investigation of the effects of hydrogen embrittlement on rolling element bearings under load. LÄS MER

3. 7. Modeling of a ball contact with a coated plate

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Mohammadreza Saeedi; [2023]
   Nyckelord :Pin on disc tribometer; coating; contact mechanics; finite element method; tribology; Pin on disc tribometer; beläggning; kontaktmekanik; finita elementmetod; tribologi;

   Sammanfattning : During tightening of a screw, the variation in friction will affect the force acting on the joint, especially when tightening using torque as a control parameter. So, it is crucial to have a proper understanding of the contact mechanism and friction in the screw head to joint and thread interfaces. LÄS MER

4. 8. New design and construction of hightemperature tribology testingequipment : in the context of hard coatings

   Master-uppsats, Karlstads universitet/Avdelningen för maskin- och materialteknik

   Författare :Atle Andersson Nykvist; [2023]
   Nyckelord :Tribology; friction; wear; hot wear; hot wear tester; design; construction; tribometer; tribo tester; tribo-tester; Tribologi; friktion; nötning; varmnötning; varmnötare; design; konstruktion; tribometer; tribotest;

   Sammanfattning : There are two main goals of this thesis. Firstly, to improve and develop an existing hot weartester at Karlstad University so that it may test more samples of different sizes. Secondly, totest previously impossible samples and investigate their tribological properties and measurethe coefficient of friction with high reproducibility. LÄS MER

5. 9. Microstructure characteristics and tribological behaviour of plasma sprayed ceramic coatings

   Master-uppsats, Högskolan Väst/Institutionen för ingenjörsvetenskap

   Författare :Luigi Fadini; [2023]
   Nyckelord :Thermal spray; APS; SPS; tribology; wear resistant ceramic coatings;

   Sammanfattning : Surface engineering is increasingly becoming inevitable for meeting the high-performance requirements constantly expected from modern engineering components. Higher demands for combined functionalities, which a base material alone cannot provide, motivate intensive academic studies on various types of coatings, with the ultimate objective of their practical utilisation in industries. LÄS MER

7. 10. Test Rig to Measure the Coefficient of Friction of Various Materials at Different Velocities and Pressures

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Prathik Jain Santhilal; [2023]
   Nyckelord :coefficient of friction; machine design; pressure; test rig; tribology; velocity.; friktionskoefficient; maskinkonstruktion; tryck; testrigg; tribologi; hastighet.;

   Sammanfattning : This thesis presents the design and development of a versatile test rig specifically tailored for measuring frictional properties of diverse materials across a wide range of velocities and pressures. The ability to accurately quantify frictional behaviour under varying conditions is essential for understanding material performance in numerous applications, such as automotive, aerospace, and manufacturing industries. LÄS MER