The effect of through-thickness compressive stress on mode II interlaminar fracture toughness

Catalanotti, G.; Furtado, C.; Scalici, T.; Pitarresi, G.; van der Meer, F.P.; Camanho, PP

doi:10.1016/j.compstruct.2017.09.014

The effect of through-thickness compressive stress on mode II interlaminar fracture toughness

Title

The effect of through-thickness compressive stress on mode II interlaminar fracture toughness

Author

Catalanotti, G. (Queen's University Belfast)
Furtado, C. (Universidade do Porto; INEGI)
Scalici, T. (Università degli Studi di Palermo)
Pitarresi, G. (Università degli Studi di Palermo)
van der Meer, F.P. (TU Delft Applied Mechanics)
Camanho, PP (Universidade do Porto; INEGI)

Date

2017-12-15

Abstract

The effect of through-thickness compressive stress on mode II interlaminar fracture toughness is investigated experimentally and replicated numerically. The modified Transverse Crack Tensile specimen recently proposed by the authors is used, together with an experimental device designed to apply a constant transverse compressive stress on the surface of the specimen. Experiments are conducted using IM7/8552 specimens for different compressive stresses, ranging from 0 to 100 MPa, covering all the practical applications commonly encountered in the aeronautical industry (e.g., tightened filled holes or bolted joints). It is shown that mode II interlaminar fracture toughness increases with the applied compressive through-thickness stress. Finally, experiments are replicated using appropriate numerical models based on cohesive elements that take into account frictional effects. A good agreement between numerical predictions and experiments is found.

Subject

Compressive stress
Interlaminar fracture toughness
Mode II delamination

To reference this document use:

http://resolver.tudelft.nl/uuid:3228b095-39e4-432f-b461-c01cec9db692

DOI

https://doi.org/10.1016/j.compstruct.2017.09.014

Embargo date

2019-09-23

ISSN

0263-8223

Source

Composite Structures, 182, 153-163