Sökning: "wear measurement"

Visar resultat 6 - 10 av 60 avhandlingar innehållade orden wear measurement.

  1. 6. Thermomechanics of block brakes

    Författare :Daniel Thuresson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; friction; pin model; contact mechanics; brake; thermo camera; thermomechanical; wear; freight train.; finite element; temperature measurement;

    Sammanfattning : Friction in sliding contacts plays an important role in tribology. Applications can be found in many engineering fields  such as braking of vehicles  in which friction brakes are by far the most common. Thus, an understanding of the mechanisms involved in friction brakes has become more important as the demands on brakes increase. LÄS MER

  3. 7. Clinical and experimental studies on wear and osteolysis in total joint replacement

    Författare :Thord von Schewelov; Ortopedi - klinisk och molekylär osteoporosforskning; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; reumatologi; muskelsystem; Skelett; rheumatology locomotion; muscle system; NTx; Skeleton; radiostereometry; osteolysis; wear; Hip; arthroplasty; metabolism; orthopaedics; traumatology; Kirurgi; ortopedi; traumatologi; Biochemistry; Metabolism; Biokemi;

    Sammanfattning : Total hip arthroplasty is a very successful procedure. Despite this fact, however, a certain portion of patients has to be revised. One major reason for revision is the wear of the polyethylene leading to loosening and osteolysis. LÄS MER

  4. 8. Mechanical braking systems for trains: A study of temperatures, fatigue and wear by experiments and simulations

    Författare :Mandeep Singh Walia; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tread brakes; experiments; temperatures; disc brakes; wear; Railway braking; simulations; fatigue;

    Sammanfattning : Increased demand for shorter travel times, higher axle loads, increased volumes and increased punctuality of railway traffic calls for a better design and management of the railway subsystems. The present thesis deals with aspects of mechanical friction brakes, in the form of tread brakes and disc brakes. LÄS MER

  5. 9. On wear transitions in the wheel-rail contact

    Författare :Sundh Jon; Ulf Olofsson; Staffan Jacobsson; KTH; []
    Nyckelord :Wear transitions; Wheel; Rail; Wear regime; Wear mechanism; Mechanical engineering; Maskinteknik;

    Sammanfattning : Wear transitions in the wheel–rail contact are of increasing interest since the general trend in railway traffic is toward increased velocities and axle loads. Curving increases the risk of flanging, causing the contact to change from an almost pure rolling wheel tread–rail head contact to more of a sliding wheel flange–rail gauge contact on the high rail in curves. LÄS MER

  7. 10. Investigation on the Influence of Nodularity in Machining of Compacted Graphite Iron (CGI)

    Författare :Gustav Grenmyr; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Compacted Graphite Iron CGI ; cutting forces; wear mechanisms; tool wear; nodularity; tool temperature; cutting temperature;

    Sammanfattning : Stringency of environmental legislation on emission rates and increasing vehicle performance requirements are pushing the automotive and heavy truck industries to find new solutions for their diesel engines. Two potential opportunities to address these challenges involve increased combustion pressure to obtain more efficient combustion or reducing the weight of the engine. LÄS MER