Sökning: "Test-rig"

Visar resultat 11 - 15 av 118 avhandlingar innehållade ordet Test-rig.

  1. 11. Investigation of acoustic source characterisation and installation effects for small axial fans

    Författare :Per-Olof Berglund; KTH; []
    Nyckelord :axial fan; airborne sound; source characterisation; transmission path analysis; in-duct. Spherical harmonics;

    Sammanfattning : Fans are often used in equipment such as home appliances andelectronic equipment where the margin of profit is small butcustomers demands on a low noise level are high. Therefore,methods for predicting the noise emitted by an applicationincluding one or several fans are desirable in order toimprove, accelerate and reduce the cost of low-noise design. LÄS MER

  3. 12. Wet clutch engagement characteristics

    Författare :Mikael Holgerson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Sammanfattning : A wet clutch test rig has been built to examine the engagement characteristics of wet clutch plates. The apparatus is specially designed to include a drive torque. Input and output characteristics of the apparatus are similar to those in automotive automatic transmissions. LÄS MER

  4. 13. Gearbox noise : Correlation with transmission error and influence of bearing preload

    Författare :Mats Åkerblom; Sören Andersson; D. Houser; KTH; []
    Nyckelord :gear; gearbox; noise; vibration; transmission error; bearing preload; Mechanical engineering; Maskinteknik;

    Sammanfattning : The five appended papers all deal with gearbox noise and vibration. The first paper presents a review of previously published literature on gearbox noise and vibration. The second paper describes a test rig that was specially designed and built for noise testing of gears. LÄS MER

  5. 14. Prevention of Head Injuries - focusing Specifically on Oblique Impacts

    Författare :Magnus Aare; KTH; []
    Nyckelord :head injury; helmets; oblique impacts; FEM;

    Sammanfattning : The massive number of injuries sustained in trafficaccidents is a growing problem worldwide, especially indeveloping countries. In 1998, more than one million peoplewere killed in traffic accidents worldwide, while about tentimes as many people were injured. LÄS MER

  7. 15. On Dynamic Behaviour of Wind Systems for Pipe Organs

    Författare :Tobias Carlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; wind system; pipe organ; wind supply; unsteady channel flow;

    Sammanfattning : The wind system sets the operational conditions for the organ pipes. The pipe foot pressure is by nature very unsteady and is a result of the wind system response to the activities of the organ player. Changing flows create propagating pressure waves. LÄS MER