Počet záznamů: 1  

Williams' expansion-based approximation of the displacement field in an Al 2024 compact tension specimen reconstructed from optical measurements

  1. 1.
    0495748 - ÚFM 2019 RIV US eng J - Článek v odborném periodiku
    Seitl, Stanislav - Malíková, Lucie - Růžička, V. - Moreno, B. - Lopez-Crespo, P.
    Williams' expansion-based approximation of the displacement field in an Al 2024 compact tension specimen reconstructed from optical measurements.
    Fatigue and Fracture of Engineering Materials and Structures. Roč. 41, č. 10 (2018), s. 2187-2196. ISSN 8756-758X. E-ISSN 1460-2695.
    [IJFatigue and FFEMS Joint Workshop on Characterisation of Crack Tip Fields /4./. Bonifacio, 10.04.2018-12.04.2018]
    Grant CEP: GA ČR GA17-01589S
    Institucionální podpora: RVO:68081723
    Klíčová slova: digital image correlation * hybrid crack element * tip asymptotic field * higher-order terms * mixed-mode cracks * fracture-mechanics * stress intensity * coefficients * plasticity * closure * crack tip fields * dic * displacement field reconstruction * higher-order terms * multi-parameter approximation * optical measurements * Williams power series
    Obor OECD: Audio engineering, reliability analysis
    Impakt faktor: 2.555, rok: 2018

    A study on the approximation of the displacement field in the vicinity of a crack tip in a compact tension specimen made from Al 2024-T351 is presented. Components of displacements vector are expressed using the linear elastic fracture mechanics theory via Williams' power series multi-parameter formulation. Determination of the coefficients of the terms of this series is performed using a least squares-based regression technique known as over deterministic method for which displacements data obtained experimentally via optical measurements are taken as inputs. The displacement fields reconstructed are discussed, and several conclusions are drawn regarding the number of the Williams' power series terms considered and the region where the displacement are investigated.
    Trvalý link: http://hdl.handle.net/11104/0288676

     
     
Počet záznamů: 1  

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