Přístupnostní navigace
E-application
Search Search Close
Publication detail
SEITL, S. MALÍKOVÁ, L. SOBEK, J. FRANTÍK, P. LOPÉZ-CRESPO, P.
Original Title
Williams expansion-based approximation of the stress field in an Al 2024 body with a crack from optical measurements
Type
journal article in Web of Science
Language
English
Original Abstract
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
Keywords
Crack tip fields; Optical measurements; DIC; Williams power series; Higher-order terms; Stress field reconstruction; Multi-parameter approximation
Authors
SEITL, S.; MALÍKOVÁ, L.; SOBEK, J.; FRANTÍK, P.; LOPÉZ-CRESPO, P.
Released
1. 7. 2017
Publisher
Gruppo Italiano Frattura
ISBN
1971-8993
Periodical
Frattura ed Integrita Strutturale
Year of study
11
Number
41
State
Republic of Italy
Pages from
323
Pages to
331
Pages count
9
URL
https://www.fracturae.com/index.php/fis/article/view/IGF-ESIS.41.43
Full text in the Digital Library
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" }