Sökning: "hardening mechanisms"

Visar resultat 21 - 25 av 59 avhandlingar innehållade orden hardening mechanisms.

  1. 21. Bitumen ageing and hydrated lime

    Författare :Lars S. Johansson; KTH; []
    Nyckelord :;

    Sammanfattning : This doctoral thesis consists of a literature review andfour papers describing experimental studies of the influence ofhydrated lime on bitumen ageing.The literature review describes contemporary knowledge ofbitumen with respect to chemistry, rheology and modification.The relation between chemical composition and mechanicalbehaviour is discussed. LÄS MER

  3. 22. System Evaluation and Learning in Evolvable Production Systems : Preliminary considerations and research directions

    Författare :Pedro Neves; Mauro Onori; Luis Ribeiro; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Learning; Evolvable Production Systems; SRA - Production; SRA - Produktion;

    Sammanfattning : Dynamicity and unpredictability related to markets is strongly hardening companies’ mission to follow them and satisfy customer needs mainly due to the lack of adequate engineering mechanisms. These effects are felt more intensively in markets where low volumes and high customisation are needed since this requires constant changes in systems that can range from simple setups to total line re-configuration and re-programing. LÄS MER

  4. 23. Fatigue and Corrosion Fatigue Fracture of a Plasma Nitrided, Laser Hardened, and Galvanized B-Mn Steel

    Författare :Pedro De la Cruz Rodrígues; Birger Karlsson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Fundamental and technological aspects of fatigue and fracture of conventional and advanced material are topics of primary importance to the development of materials science and engineering. Surface treatments have been established to improve the surface properties of material against surface phenomenon such as wear, corrosion, fatigue and corrosion fatigue. LÄS MER

  5. 24. Dislocation density based material model applied in FE-simulation of metal cutting

    Författare :Dan Wedberg; Bevis Hutchinson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

    Sammanfattning : Simulation based design enables rapid development of products with increased customer value in terms of accessibility, quality, productivity and profitability. However simulation of metal cutting is complex both in terms of numeric and physics. The work piece material undergoes severe deformations. LÄS MER

  7. 25. Numerical and Experimental Investigation on Paperboard Converting Processes

    Författare :Hui Huang; Mikael Nygårds; Ron Peerlings; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : An investigation of the mechanical properties of paperboard and its influence on converting processessuch as creasing, folding and forming, from both an experimental and numerical perspective wasperformed. Fundamental research to establish a material model for paperboard, and an experimentalout-of-plane shear test method was suggested. LÄS MER