Essays about: "Åldring"

Showing result 11 - 15 of 27 essays containing the word Åldring.

  1. 11. Machine learning for the prediction of duplex stainless steel mechanical properties : Hardness evolution under low temperature aging

    University essay from KTH/Materialvetenskap

    Author : Baptiste Giard; Sofia Karlsson; [2021]
    Keywords : Duplex Stainless Steel DSS; Machine Learning; Phase Separation; Me- chanical Properties; Alloying; Duplexa rostfria stål; Maskininlärning; Fasseparation; Mekaniska Egenskaper; Legering;

    Abstract : Duplex stainless steels, DSS are stainless steels that consist of the two phases austenite and ferrite.  The DSS have superb properties and are widely used in industries such as nuclear power and in pressure vessels, pipes and in pipelines.  The use of DSS are limited due to embrittlement which occurs at temperatures from 250 to 550 oC. READ MORE

  3. 12. Li-ion titanate technology for SLI battery applications in commercial vehicles

    University essay from KTH/Kemiteknik

    Author : Liliya Vasilevich; [2021]
    Keywords : Lithium-titanate battery LTO ; overdischarge; battery testing; KERS; heavy-duty vehicles; Litium titanat batteri LTO ; överurladdning; batteritestning; KERS; tunga fordon;

    Abstract : Litiumjon-batterier har blivit väldigt populära för tillämpning i fordon. Den här teknologin har fler olika kemier att erbjuda som kontinuerligt förbättras. Litium-titanat-oxid-batterier använder (LTO) LTO som anod och erbjuder långt cyklingsliv samt minskar risk för SEI-bildning och litiumplätering. READ MORE

  4. 13. Accelerated aging of cellulose-based composites in different climate environments : A project provided by Biofiber Tech Sweden AB

    University essay from Uppsala universitet/Institutionen för kemi - Ångström

    Author : Karin Dungner; Ebba Eskner; Amanda Holst; Nina Petersson; Maria Pokosta; John Eric Roos; [2021]
    Keywords : Cellulose; Composites; Accelerated aging; Tensile testing; Color intensity; Polymer; Climate chamber; LDPE; Cellulosa; Kompositer; Accelererad åldring; Dragprov; Färgintensitet; Klimatkammare; Polymer; LDPE;

    Abstract : This paper reviews the effects of accelerated aging with increased humidity and temperature on cellulose-based composites. The composites consist of a matrix of plastic reinforced with cellulose fibers. The company Biofiber Tech Sweden AB provided four different composites and a conventional polyolefin as reference. READ MORE

  5. 14. Mechanism of Formation of Soft Particles in Biodiesel Fuel Blends

    University essay from KTH/Materialvetenskap

    Author : Roberta Maria Fiorenza; [2020]
    Keywords : ;

    Abstract : The large environmental impact related to the use of fossil fuel has driven the shift toward renewable sourced alternatives. Fossil diesel can be nowadays replaced by biodiesel, obtained from vegetable oils and fats, mostly used as biodiesel blends. READ MORE

  6. 15. Energy Storage for Stationary Applications – A Comparative, Techno-Economical Investigation

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Fredrik Persson; [2020]
    Keywords : Lead-acid; Lithium iron phosphate; Stationary energy storage; Techno-economic analysis; bly-syra; litium-järnfosfat; stationärt energilager; tekno-ekonomisk studie;

    Abstract : Power outages, electric-grid deficiencies and renewable energies are all examples where stationary energy storages are useful. In this master thesis, two types of stationary electrochemical energy storages are examined; vent-regulated lead-acid batteries (VRLA) and lithium iron phosphate batteries (LFP), to find out the more beneficial one in stationary uses. READ MORE