We present the results of an experimental campaign on a set of specimens manufactured from a typical carbon/epoxy unidirectional laminate. Preliminary tests are performed to evaluate the elastic properties of the base laminate. Then, double cantilever beam (DCB) and end-notched flexure (ENF) tests are conducted to assess the delamination toughness in pure fracture modes I and II, respectively, and evaluate the elastic interface constants. Afterwards, mixed-mode bending (MMB) tests are carried out with three values of the leverarm length. The outcomes of the preliminary and pure fracture mode tests are used as an input to a previously developed enhanced beam theory (EBT) model of the MMB test. Lastly, theoretical predictions and experimental results are compared.
Experimental validation of the enhanced beam-theory model of the mixed-mode bending test / Bennati, Stefano; Fisicaro, Paolo; Taglialegne, Luca; Valvo, Paolo Sebastiano. - ELETTRONICO. - volume 5:(2017), pp. 2064-2072. (Intervento presentato al convegno AIMETA 2017 - XXIII Conference of the Italian Association of Theoretical and Applied Mechanics tenutosi a Salerno nel 4/7 settembre 2017).
Experimental validation of the enhanced beam-theory model of the mixed-mode bending test
TAGLIALEGNE, LUCA;VALVO, PAOLO SEBASTIANO
2017
Abstract
We present the results of an experimental campaign on a set of specimens manufactured from a typical carbon/epoxy unidirectional laminate. Preliminary tests are performed to evaluate the elastic properties of the base laminate. Then, double cantilever beam (DCB) and end-notched flexure (ENF) tests are conducted to assess the delamination toughness in pure fracture modes I and II, respectively, and evaluate the elastic interface constants. Afterwards, mixed-mode bending (MMB) tests are carried out with three values of the leverarm length. The outcomes of the preliminary and pure fracture mode tests are used as an input to a previously developed enhanced beam theory (EBT) model of the MMB test. Lastly, theoretical predictions and experimental results are compared.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.