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  • Accelerated fatigue and modal parameter identification of lightweight structures [Elektronski vir]
    Slavič, Janko, 1978- ; Česnik, Martin, inženir strojništva ; Boltežar, Miha
    Car components are exposed to the random/harmonic/impact excitation which can result in component failure due to vibration fatigue. The stress and strain loads do depend on local stress concentration ... effects and also on the global structural dynamics properties. Standardized fatigue testing is long-lasting, while the dynamic fatigue testing can be much faster; however, the dynamical changes due to fatigue are usually not taken into account and therefore the identified fatigue and structural parameters can be biased. In detail: damage accumulation results in structural changes (stiffness, damping) which are hard to measure in real time; further, structural changes change the dynamics of the loaded system and without taking this changes into account the fatigue load in the stress concentration zone can change significantly (even if the excitation remains the same).
    Type of material - conference contribution
    Publish date - 2014
    Language - english
    COBISS.SI-ID - 13555483
    DOI