Sökning: "Roger Reed"

Hittade 4 avhandlingar innehållade orden Roger Reed.

  1. 1. On high temperature oxidation resistance : Towards the materials genome of high temperature alloys

    Författare :Samuel Hallström; John Ågren; Roger Reed; KTH; []

    Sammanfattning : The efficiency of a heat engine increases with increasing service temperature. This leads to a demand for material that can withstand aggressive environments and sometimes also high load at higher and higher temperature. That is the rationale for the work of this thesis. LÄS MER

  2. 2. Modelling of constitutive and fatigue behaviour of a single-crystal nickel-base superalloy

    Författare :Daniel Leidermark; Kjell Simonsson; Johan Moverare; Sören Sjöström; Roger C. Reed; Linköpings universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Single-crystal nickel-base superalloys; crystal plasticity; tension compression asymmetry; rafting; fatigue initiation; critical plane approach; Engineering mechanics; Teknisk mekanik;

    Sammanfattning : In this licentiate thesis the work done in the project KME410 will be presented. The overall objective of this project is to evaluate and develop tools for designing against fatigue in single-crystal nickel-base superalloys in gas turbines. LÄS MER

  3. 3. Nickel-Based Single-Crystal Superalloys : the crystal orientation influence on high temperature properties

    Författare :Mikael Segersäll; Johan Moverare; Kjell Simonsson; Daniel Leidermark; Roger Reed; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Superalloys are a group of materials that are used in high temperature applications, for example gas turbines and aero engines. Gas turbines are most commonly used for power generation, and it is only the very critical components which are exposed to the most severe conditions within the turbine, which are made from superalloy material. LÄS MER

  4. 4. Concepts for hot sheet metal forming of titanium alloys

    Författare :Eva-Lis Odenberger; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot sheet metal forming; Titanium; FE simulation; Validation; Springback; HCP; Varmforming; Titan; FE simulering; Validering; Återfjädring; HCP; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : To increase the competitiveness of the Swedish aero engine industry alternative manufacturing methods for load carrying aero engine structures are desired, in order to reduce product cost and enable weight reduction and thereby fuel consumption. Traditionally, these structures mainly consist of large-scaled single castings of e.g. LÄS MER