Sökning: "Maskinkonstruktion"

Visar resultat 1 - 5 av 250 avhandlingar innehållade ordet Maskinkonstruktion.

  1. 1. Methodological Simplification in Comparative Life Cycle Assessment and Consequences on Validity

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Katja Tasala Gradin; KTH.; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Life Cycle Assessment; internal validity; external validity; comparative LCA; isolated part; omitted part; road vehicles; drivetrains; disc brakes; isolation criteria checklist; Machine Design; Maskinkonstruktion;

    Sammanfattning : Life Cycle Assessment (LCA) is central to the development of sustainable products. LCA assesses the environmental impact of a product, service, or system through-out its whole life cycle, from material extraction to end-of-life phase. LÄS MER

  2. 2. Particle emissions from car brakes The influence of contact conditions on the pad-to-rotor interface

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Mattia Alemani; Ulf Olofsson; Jens Wahlström; Anders Söderberg; Staffan Jacobson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Car brakes emissions; transition temperature; working conditions; environmental design; pin-on-disc; Bilbromsutsläpp; övergångstemperatur; arbetsförhållanden; miljödesign; pinne-på-skiva; Machine Design; Maskinkonstruktion;

    Sammanfattning : Due to their adverse health effects emissions have been regulated for over three decades. Brake wear particulate matter is the most important non-exhaust source, however current knowledge is mainly limited to observational studies. LÄS MER

  3. 3. An experimental investigation of spur gear efficiency and temperature A comparison between ground and superfinished surfaces

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Martin Andersson; Ulf Olofsson; Bengt-Göran Rosén; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gears; ground; superfinished; efficiency; temperature; running-in; dip lubrication; spray lubrication; Machine Design; Maskinkonstruktion;

    Sammanfattning : This thesis focuses on reliability when testing gear efficiency and on how gear mesh efficiency can be increased without detrimental effects on the gears. Test equipment commonly used in gear research was analysed to identify important parameters for gear efficiency testing. LÄS MER

  4. 4. Engine Optimized Turbine Design

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Nicholas Anton; Anders Christiansen-Erlandsson; Magnus Genrup; Marc Gugau; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbocharger; Heavy-duty; Turbine; Axial; Radial; Machine Design; Maskinkonstruktion;

    Sammanfattning : The focus on our environment has never been as great as it is today. The impact of global warming and emissions from combustion processes become increasingly more evident with growing concerns among the world’s inhabitants. The consequences of extreme weather events, rising sea levels, urban air quality, etc. LÄS MER

  5. 5. Risks Related to the Use of Software Tools when Developing Cyber-Physical Systems A Critical Perspective on the Future of Developing Complex, Safety-Critical Systems

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Fredrik Asplund; Martin Törngren; Jad El-Khoury; John McDermid; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automation; Certification; Process Risks; Safety; Safety-Critical; Standards; Support Environments; Tool Integration; Machine Design; Maskinkonstruktion;

    Sammanfattning : The increasing complexity and size of modern Cyber-Physical Systems (CPS) has led to a sharp decline in productivity among CPS designers. Requirements on safety aggravate this problem further, both by being difficult to ensure and due to their high importance to the public. LÄS MER