Development of a Data Reduction Method for Composite Fracture Characterization Under Mode III Loadings

Pietro Sabbadin*, Roberta Massabò, Christian Berggreen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This work is part of a research aimed at developing a reliable data reduction method for a novel test rig for sandwich composites, which is inspired by the Shear Torsion Bending (STB) rig designed for unidirectional composites. The rig performs fracture characterization tests on pre-delaminated composite sandwich specimens subjected to out-of-plane shear loading. An out-of-plane displacement is applied at the end of the delaminated arms using a hydraulic actuator and the corresponding load is recorded. An analytical equation is required to compute the global value of the energy release rate for an imposed displacement. The preliminary work presented in this paper assumes the material to be quasi-isotropic and linear elastic. The mathematical derivation of the energy release rate relies on First Order Shear Deformation Theory and Vlasov theory for non-uniform torsion of beams. The analytical expression is compared with the energy release rate extracted from a 3D FE model of the specimen using the compliance method.
Original languageEnglish
Title of host publicationProceedings of XXIV AIMETA Conference 2019
EditorsAntonio Carcaterra, Achille Paolone, Giorgio Graziani
PublisherSpringer
Publication date2020
Pages660-670
ISBN (Print)978-3-030-41056-8
ISBN (Electronic)978-3-030-41057-5
DOIs
Publication statusPublished - 2020
Event24th Conference of the Italian Association of Theoretical and Applied Mechanics (AIMETA 2019) - Rome, Italy
Duration: 15 Sep 201919 Sep 2019

Conference

Conference24th Conference of the Italian Association of Theoretical and Applied Mechanics (AIMETA 2019)
CountryItaly
CityRome
Period15/09/201919/09/2019
SeriesLecture Notes in Mechanical Engineering
ISSN2195-4356

Keywords

  • Debonding
  • Interface
  • Fracture toughness
  • Data reduction method

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