Essays about: "Thermal fatigue"

Showing result 16 - 20 of 51 essays containing the words Thermal fatigue.

  1. 16. Growth and Characterization of Ferroelectric Lanthanum-Doped Hafnia

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Harald Havir; [2020]
    Keywords : Ferroelectricity; Lanthanum-doped Hafnia; ALD; Science General;

    Abstract : Hafnia-based ferroelectrics show great promise as future nonvolatile memory devices, however, their issues regarding device inconsistency across their lifetime, coupled with the relatively short total lifetime, makes these devices only theoretical as of now. In this thesis, an ALD deposition recipe for lanthanum oxide deposition was created. READ MORE

  3. 17. Development of a Method to Measure Residual Stresses in Cast Components with Complex Geometries

    University essay from KTH/Materialvetenskap

    Author : Yang Yang; [2020]
    Keywords : Residual Stresses; Cast Iron; Engine Components; XRD; Ultrasonic; Cutting;

    Abstract : Cast iron, taking the advantages of the advanced castability forming components of complex geometries and favorable mechanical properties, is employed in engine components in truck industries. Compacted graphite iron (CGI) integrates both merits of lamellar graphite iron (LGI) and spheroidal graphite iron (SGI) such as good machinability and high thermal conductivity from LGI, high ultimate tensile strength (UTS), good fatigue resistance, high elastic modulus, and high ductility from SGI, thus is now becoming a competitive alternative of traditional LGI in cylinder blocks and heads. READ MORE

  4. 18. Influence of nitrocarburization on the thermomechanical fatigue properties of ductile iron for exhaust components : Analysis and comparisons of TMF-properties

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Karl Larsson; [2019]
    Keywords : Thermo-mechanical fatigue; low cycle fatigue; thermal strain; ductile cast iron; nitrocarburizing;

    Abstract : New stricter environmental legislation requires lower emissions and fuel consumption of automotive engines. Therefore the fuel efficiency must be increased but this leads to higher loads in the engine. As for the exhaust system it is affected by higher thermomechanical loads. READ MORE

  5. 19. Mechanical and Thermal Characterisation of Novel UHMWPE Composites for Total Joint Arthroplasty

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Julian Somberg; [2019]
    Keywords : UHMWPE; Nanocomposites; DSC; Fracture Toughness; Wear;

    Abstract : Total joint arthroplasty surgeries are known to have a high success rate but the longevity of the implants still acts as a limiting factor. Ultrahigh molecular weight polyethylene is the material of choice for the implant bearing surfaces due to its excellent clinical and tribological performance. READ MORE

  6. 20. Polymer Aging Mechanics : An investigation on a Thermoset Polymer used in the Exterior Structure of a Heavy-duty Vehicle

    University essay from Linnéuniversitetet/Institutionen för skog och träteknik (SOT)

    Author : Basil Abu-Ragheef; [2019]
    Keywords : polyDicyclopentadiene; aging; thermosets; fatigue; mechanical properties; thermal fatigue; digital image correlation; viscoelasticity; polymer degradation; thermo-oxidation; photo-oxidation;

    Abstract : The use of plastic materials in the design of vehicle components is primarily driven by the need for vehicle weight and cost reduction. Additionally, these materials give design engineers freedom in creating appealing exterior designs. READ MORE