Detail publikace

Williams expansion-based approximation of the stress field in an Al 2024 body with a crack from optical measurements

SEITL, S. MALÍKOVÁ, L. SOBEK, J. FRANTÍK, P. LOPÉZ-CRESPO, P.

Originální název

Williams expansion-based approximation of the stress field in an Al 2024 body with a crack from optical measurements

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

A study on the approximation of the stress field in the vicinity of crack tip in a compact tension specimen made from Al 2024-T351 is presented. Crack tip stress tensor components are expressed using the linear elastic fracture mechanics (LEFM) theory in this work, more precisely via its multi-parameter formulation, i.e. by Williams power series (WPS). Determination of coefficients of terms of this series is performed using a least squares-based regression technique known as over deterministic method (ODM) for which displacements data obtained experimentally via optical measurements are taken as inputs. The stress fields reconstructed based on the displacement data obtained experimentally by means of optical measurements are verified by means of the stress field approximations derived for the normalized CT specimen via hybrid elements

Klíčová slova

Crack tip fields; Optical measurements; DIC; Williams power series; Higher-order terms; Stress field reconstruction; Multi-parameter approximation

Autoři

SEITL, S.; MALÍKOVÁ, L.; SOBEK, J.; FRANTÍK, P.; LOPÉZ-CRESPO, P.

Vydáno

1. 7. 2017

Nakladatel

Gruppo Italiano Frattura

ISSN

1971-8993

Periodikum

Frattura ed Integrita Strutturale

Ročník

11

Číslo

41

Stát

Italská republika

Strany od

323

Strany do

331

Strany počet

9

URL

https://www.fracturae.com/index.php/fis/article/view/IGF-ESIS.41.43

Plný text v Digitální knihovně

http://hdl.handle.net/11012/180638

BibTex

@article{BUT143151,
  author="Stanislav {Seitl} and Lucie {Malíková} and Jakub {Sobek} and Petr {Frantík} and Pablo {Lopéz-Crespo}",
  title="Williams expansion-based approximation of the stress field in an Al 2024 body with a crack from optical measurements",
  journal="Frattura ed Integrita Strutturale",
  year="2017",
  volume="11",
  number="41",
  pages="323--331",
  doi="10.3221/IGF-ESIS.41.43",
  issn="1971-8993",
  url="https://www.fracturae.com/index.php/fis/article/view/IGF-ESIS.41.43"
}