Sökning: "Compression tests"

Visar resultat 11 - 15 av 158 avhandlingar innehållade orden Compression tests.

  1. 11. Analysis and Modelling of Mineral and Element Composition in Compression Breakage

    Författare :Lorena Guldris Leon; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; minerals; rare metals; elements; cone crusher; modelling; compressive crushing;

    Sammanfattning : The outstanding properties of tungsten and tantalum make them valuable metals and, in some cases, irreplaceable in applications. The growing interest due to the high economic importance and the limited supply places these metals in the critical metals risk list. LÄS MER

  3. 12. Bracing of steel bridges during construction; theory, full-scale tests and simulations

    Författare :Hassan Mehri; Avdelningen för Konstruktionsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bracing; steel-concrete composite; steel; bridge; test; construction; laboratory; experiment; experimental; theory;

    Sammanfattning : A number of steel bridges have suffered lateral-torsional failure during their construction due to their lacking adequate lateral and/or rotational stiffness. In most cases, slight bracing can be of great benefit to the main girders involved through their controlling out-of-plane deformations and enabling the resistance that is needed to be achieved. LÄS MER

  4. 13. Assessment of lumbar radicular pain. Validity and predictive value of clinical tests

    Författare :Harald Ekedahl; Lund Ortopedi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Low back pain; validity; predictive value of test; radicular pain; transforaminal injection;

    Sammanfattning : Radicular pain is in the majority of cases caused by a disc herniation with a coexisting inflammation. It is characterized by positive neural tension tests, such as the Slump test, and by decreased range of motion (ROM) in the straight leg raising test (SLR) and lumbar flexion (Fingertip-to-floor test[FTF]). LÄS MER

  5. 14. Diffusive Combustion of Ethanol in a Dual-Fuel Direct Injection Compression Ignition Engine

    Författare :Nicola Giramondi; Anders Christiansen Erlandsson; Mihai Mihaescu; Anders Jäger; Jan Erik Eismark; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Design; Maskinkonstruktion;

    Sammanfattning : The impact of climate change due to global warming necessitates rapid and extensive measures to enhance the sustainability of the energy and transport sectors. In this context, there are large environmental and societal benefits to be gained by replacing diesel with renewable fuels for road freight transport. LÄS MER

  7. 15. Time-dependent effects in the analysis and design of slender concrete compression members

    Författare :Bo Westerberg; Jonas Holmgren; Sven Thelandersson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Building engineering; Byggnadsteknik;

    Sammanfattning : The report deals with the effect of time-dependent concrete properties in the analysis and design of slender compression members. The main focus is on how to take these effects into account in nonlinear analysis, not on the properties as such in a materials science perspective. LÄS MER