Sökning: "penetration experiment"

Visar resultat 1 - 5 av 30 avhandlingar innehållade orden penetration experiment.

  1. 1. Warhead penetration in concrete protective structures

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

    Författare :Håkan Hansson; Anders Ansell; Mattias Unosson; [2011]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Warhead penetration; FE analysis; experiment; material modelling; fortifications; Stridsdelspenetration; FE-analyser; experiment; materialmodellering; fortifikationer;

    Sammanfattning : The analysis of penetration of warheads in concrete protective structures is an important part of the study of weapon effects on protective structures. This type of analysis requires that the design load in the form of a warhead is determined, and its characteristic and performance within a protective structure is known. LÄS MER

  3. 2. Sampling Cyclones for Respirable Dust

    Detta är en avhandling från Göran Lidén, National Institute for Working Life, S-171 84 Solna, Sweden

    Författare :Göran Lidén; [1996]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Collection efficiency; Aerosol; Cyclone; Dust; Exposure; Optimisation; Penetration; Performance; Respirable dust; Sampling; Environmental technology; Standardisation; pollution control; Miljöteknik; kontroll av utsläpp;

    Sammanfattning : The performance of cyclones used in occupational hygiene for sampling respirable dust was studied. Test methods for experimental determination of cyclone penetration have been designed and validated. The penetration curve for a sampling cyclone presently used in Europe was measured. LÄS MER

  4. 3. Alkylglucosides - physical chemical properties

    Detta är en avhandling från Göran Lidén, National Institute for Working Life, S-171 84 Solna, Sweden

    Författare :Frederik Nilsson; [1998]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; penetration experiment; DSC; SAXS; NMR self-diffusion; phase separation; size micro-structure; aggregate-aggregate interaction; liquid crystalline phases; micelles; alkylglucosides; phase diagrams; fluorescence.; Physical chemistry; Fysikalisk kemi;

    Sammanfattning : The aim of this study is to characterise the physical-chemical properties of alkylglucosides. Alkylglucosides are non-ionic surfactants synthesized from glucose and a fatty alcohol. The glucose molecule constitutes the hydrophilic head group and the fatty alcohol constitutes the hydrophobic tail. LÄS MER

  5. 4. Grouting of Hard Rock with Gelling Liquids, Field and Laboratory Studies of Silica sol

    Detta är en avhandling från Göran Lidén, National Institute for Working Life, S-171 84 Solna, Sweden

    Författare :Johan Funehag; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; aperture; penetration length; gelling liquids; field study; silica sol; colloidal silica; Grouting; propagation; hydraulic test; sand column; rheology; transmissivity;

    Sammanfattning : Recent grouting projects in Sweden have concentrated on the grout itself. The only grout normally used in Sweden is a cement-based one. During the past 10 years, the acceptable flow of water into tunnels has been significantly reduced. The current requirements mean that an average fracture aperture of around 0. LÄS MER

  7. 5. Characterisation of Fractured Rock for Grouting Using Hydrogeological Methods

    Detta är en avhandling från Göran Lidén, National Institute for Working Life, S-171 84 Solna, Sweden

    Författare :Åsa Fransson; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hydraulic test; specific capacity; grouting; water pressure test; geological mapping; grout take; aperture; penetration length; transmissivity;

    Sammanfattning : Sealing of tunnels by grouting demands knowledge concerning the fractured rock and the grout, followed by an appropriate choice of strategy and equipment. In this thesis, the characterisation of rock is the main issue and, since it addresses the engineering problem of producing a description for grouting, the properties of grout and the grouting procedure need to be considered. LÄS MER