Sökning: "modified hardness test"

Hittade 4 uppsatser innehållade orden modified hardness test.

  1. 1. Static and dynamic characterization of elastomers by a modified hardness test

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

    Författare :Omar Chouman; [2019]
    Nyckelord :Rubber; elastomer; modified hardness test; dynamic and static characterization; damping; dynamic shear modulus; hyperelastic material; hyperelastic constants; finite element method; FEM; FEA; Abaqus; Volvo Cars; Technology and Engineering;

    Sammanfattning : Today rubber can be found in many different applications, such as vibration dampers, tyres, clothes and gaskets. Two different types of rubbers are used today, namely the natural rubber and synthetic rubber. Natural rubber is made of a milky substance called latex, which is obtained from special trees found in tropical countries. LÄS MER

  3. 2. A Study of Various Parameters Affecting Adhesion of Coatings to Metal Substrates

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Worabhorn Pathanatecha; [2019]
    Nyckelord :adhesion; coatings; metal substrates; silanes; polyurethanes; surface energy; crosslinking agent; adhesion promoters; vidhäftning; beläggningar; metallunderlag; silaner; polyuretaner; ytenergi; tvärbindningsmedel; vidhäftningspromotor;

    Sammanfattning : The adhesion of coatings is of high importance in the coating industry and a more thorough understanding of adhesion behavior is required. In this thesis work, seven parameters affecting adhesion of silane-modified poly(urethane urea) (PUSi) coatings on pretreated steel and aluminum substrates were studied. LÄS MER

  4. 3. Binder Migration in Double Pressed Drill Bit Inserts

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Författare :Axel Bjerke; [2018]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : It is possible to produce functionally graded cemented carbides on a large scale by double pressing. Being able to predict the binder migration in WC-Co cemented carbides during the sintering is essential to the design of such cemented carbides. The cobalt content is one of the main factors determining the hardness gradient. LÄS MER

  5. 4. Tribological testing of rotary drill bit inserts

    Uppsats för yrkesexamina på avancerad nivå, Tillämpad materialvetenskap

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

    Sammanfattning : 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. LÄS MER