Sökning: "stiffening"

Visar resultat 1 - 5 av 33 avhandlingar innehållade ordet stiffening.

  1. 1. Acoustical Characteristics of Aircraft Panels

    Författare :Bilong Liu; Leping Feng; Jie Pan; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Acoustics; sound transmission loss; stiffener; stiffening; aircraft panel; cylindrical shell; turbulent boundary layer; TBL; noise; sound radiation; Acoustics; Akustik;

    Sammanfattning : A deterministic approach based on a modal expansion and modal receptance method has been developed to evaluate the airborne sound insulation of aircraft panels with stringer and ring frame attachments. Furthermore, this method was extended to predict the noise radiation of stiffening panel subjected to TBL excitation. LÄS MER

  3. 2. Sound transmission through aircraft panels

    Författare :Biong Liu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sound transmission loss; stiffener; stiffening; aircraft panel; cylindrical shell; Vehicle engineering; Farkostteknik;

    Sammanfattning : .... LÄS MER

  4. 3. Effects of Steel Fibres on Cracking in Reinforced Concrete

    Författare :Anette M Jansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; uniaxial tension test; Keywords: Self-compacting; characteristic crack width; fibre-reinforced; bond; tension stiffening; Digital Image Correlation; pull-out test;

    Sammanfattning : ABSTRACTAlthough it is well known that fibre reinforcement acts as a crack arresting agent, there is still a need for deeper knowledge of the actual cracking behaviour, especially regarding cracks with widths smaller than 0.3mm. LÄS MER

  5. 4. Vibrations from Railway Traffic : Computational Modeling and Analysis

    Författare :Jens Malmborg; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Train-induced vibrations; ground vibration; wave propagation; soil dynamics; finite element method; soil stiffening; critical velocity;

    Sammanfattning : The population is growing, and an increasing proportion of the population lives in urban areas. As a consequence, human exposure to noise and vibrations is increasing; two major sources being railway and road traffic. Larger and denser cities lead to a higher amount of traffic close to where people work and live. LÄS MER

  7. 5. Cell-matrix interactions : master regulators of cancer cell fate?

    Författare :Sara Göransson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The development and homeostasis of a multicellular organism require fundamental biological processes like cell proliferation, cell differentiation, cell migration, and controlled cell death. The extracellular matrix (ECM) guides many of these functions, via cell-matrix interactions that function as mechanical and biochemical signaling hubs. LÄS MER