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Showing result 1 - 5 of 31 essays matching the above criteria.

  1. 1. Evaluating Technical Lifetime of Radio Circuit Boards : by Measuring Degradation and Aging of Hold-up Capacitors

    University essay from KTH/Hälsoinformatik och logistik

    Author : Otto Tellberg; [2023]
    Keywords : technical lifetime; Arrhenius equation; radio circuit board; aluminum electrolyte capacitor; performance degradation; global temperature rise; teknisk livslängd; Arrhenius ekvation; radiokretskort; aluminium elektrolytkondensator; prestandadegradering; global temperaturökning.;

    Abstract : The aim of this thesis is to improve the knowledgebase regarding the technical lifetime of radio circuit boards. The purpose is to create opportunities to facilitate the design of products that live up to the customers' requirements and to Ericsson's sustainable responsibility goals. READ MORE

  3. 2. Investigation of high temperature stability of additive manufactured austenitic stainless steels for space applications

    University essay from Luleå tekniska universitet/Materialvetenskap

    Author : Belén Alonso Rancurel; [2023]
    Keywords : austenitic stainless steel; additive manufacturing; high temperature corrosion; high temperature stability;

    Abstract : Additive manufacturing (AM) techniques are being studied for their application in the aerospace industry. Numerous benefits come from the already in shape final piece, which needs reduced amount of prime material for its production and can have its shape numerically optimized for weight reduction. READ MORE

  4. 3. Temperature dependency of rheological properites of different dispersions containing microfibrillated cellulose

    University essay from Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

    Author : Johanna Swanelius; [2022]
    Keywords : Microfibrillated cellulose; MFC; waxy maize starch; rheology; temperature; viscosity; complex viscosity; stready shear viscosity curve; amplitude sweep; dry content; dynamic rotational rheometer; Mikrofibrillerad cellulosa; MFC; vaxartad majsstärkelse; reologi; temperatur; viskositet; komplex viskositet; flödeskurva; amplitudsvep; torrhalt; dynamisk reometer;

    Abstract : Today, the focus lies on the state of the environment and how we can choose more sustainable alternatives to oil based materials. One material of interest is microfibrillated cellulose (MFC). READ MORE

  5. 4. Thermal Initiation of Energetic Materials Caused by Hot Fragments

    University essay from KTH/Matematik (Avd.)

    Author : Sirak Ghebreamlak; [2022]
    Keywords : Applied mathematics; computational mathematics; heat equation; thermal initiation; chemical kinetics; energetic materials; Tillämpad matematik; beräkningsteknik; värmeledningsekvationen; termisk initiering; kinetik; energetiska material;

    Abstract : The cause of unintentional initiations of energetic materials is an important area of study due to the risks that comes with storing energetic materials such as high explosives. The current models used to simulate the process of heating energetic materials by a hot metal fragment do not give reliable predictions. READ MORE

  6. 5. Shapes of Sounds

    University essay from Kungl. Konsthögskolan

    Author : Rosanna Mercado-Rojas; Ami Kohara; Johanna Mårtensson; Sara Arrhenius; Åsa Andersson; [2022]
    Keywords : Venedig; video; installation; kropp; dans; beröring; scenografi; vindmaskin; speldosa; social code; collective; cooking; Blåkulla.;

    Abstract : Shapes of Sounds is a publication that gathers reflections from and documentation of three sound art projects undertaken at Kungl. Konsthögskolan/Royal Institute of Art, by Ami Kohara, Johanna Mårtensson and Rossana Mercado-Rojas during 2018-2019. READ MORE