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Found 3 essays matching the above criteria.

  1. 1. Master thesis within light warhead for support weapon : Investigation of defects, methods and requirement specifications in order to get a shell body shatter free

    University essay from Karlstads universitet/Avdelningen för maskin- och materialteknik

    Author : Adam Jansson; [2016]
    Keywords : warhead; support weapon; shell body; shatter free; defect; method; carbon fibre; epoxy; crack; delamination; porosity; CFRP; CFRE; NDT; verkansdel; understödsvapen; granathylsa; splitterfri; defekt; metod; kolfiber; epoxi; spricka; delaminering; porositet; OFP;

    Abstract : At launching the shell body, especially the backplane of the shell body, will be exposed to very high stresses due to acceleration, pressure and increased temperature from the propellant combustion. Defects in the shell body could in worst case for example result in high temperature gas leakage into the warhead and thereby ignite the explosives before exiting the launcher. READ MORE

  3. 2. Acoustic emission methods in fatigue testing

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Axel Lison Almkvist; [2015]
    Keywords : Acoustic emission; AE; grey iron; CFRP; Akustisk emission; AE; gråjärn; CFRP;

    Abstract : Acoustic emissions are small vibration pulses, elastic waves, emitted from damage processes such as crack growth inside a material. Acoustic emission (AE) is also the name of the test method in which theses emissions are recorded and analysed and the method is used in materials research and the testing and inspection of structures. READ MORE

  4. 3. Improved failure detection with higher degree of statistical confidence

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Josefine Tarvainen; [2015]
    Keywords : Gearbox; Vibration; Gear; Truck; växellåda; vibration; kugghjul; lastbil;

    Abstract : This master thesis has been performed by a request from Scania CV AB in Södertälje. Scania CV AB is a global company manufacturing heavy vehicles, such as busses and trucks. When developing a gearbox, an endurance test is made that shows failures, such as damaged gears or bearings. STP and delta-ANALYSER are used to discover this kind of failure. READ MORE