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Publications associées (117)
Experiments and numerical modelling on angle-ply laminates under remote mode II loading
John Botsis, Georgios Pappas, Charlie Joseph Simon Blondeau
Delamination is a very frequent damage mechanism that affects the integrity of laminated composites. In this study, the effect of ply orientation on crack growth resistance was analyzed for three different anti-symmetric interfaces (+/- 30 degrees, +/- 45 ...
ELSEVIER SCI LTD2020Measurement and prediction of the transformation strain that controls ductility and toughness in advanced steels
William Curtin, Helena Van Swygenhoven, Efthymios Polatidis, Francesco Maresca
New-generation multi-phase martensitic steels derive their high strength from the body-centered cubic (BCC) phase and high toughness from transformation of the metastable face-centered cubic (FCC) austenite that transforms into martensite upon loading. In ...
PERGAMON-ELSEVIER SCIENCE LTD2020A new data set of granitic rock strength values from Yosemite Valley, California: applications to rock fall assessment
To explore connections between rock strength and rock falls, we undertook a comprehensive rock mechanics testing program for six granitic rock types in Yosemite Valley (California, USA) where rock falls are a common geomorphic and sometimes hazardous proce ...
2020Mixed-mode fracture response of anti-symmetric laminates: Experiments and modelling
Multidirectional laminates are very often used in advanced structures. However, the existing data in the literature regarding their fracture response is not conclusive. In this work, the fracture response of a +45 degrees// -45 degrees interface is investi ...
ELSEVIER SCI LTD2020Influence of the initial damage on fracture toughness and subcritical crack growth in a granite rock
Fracture mechanics is an important tool to assess the slope stability, since this approach offers a methodology to study the fracture stress field in the neighborhood of the joint tips and accurately predict propagation of the joints. While the fracture to ...
20203D Printing of Strong and Tough Double Network Granular Hydrogels
Esther Amstad, Matteo Hirsch, Alvaro Lino Boris Charlet
Many soft natural tissues display a fascinating set of mechanical properties that remains unmatched by manmade counterparts. These unprecedented mechanical properties are achieved through an intricate interplay between the structure and locally varying the ...
2020Propagation of a fluid-driven fracture with fracture length dependent apparent toughness
Brice Tanguy Alphonse Lecampion, Dong Liu
We investigate the growth of a hydraulic fracture assuming a power-law dependence of material toughness with fracture length for plane strain and radial geometries. Such a toughness fracture length dependence models in a simple manner a toughening mechanis ...
2019Nacre-inspired Hard and Tough Materials
Nature fabricates materials with properties that are difficult to reproduce with manmade counterparts. For example, nacre, composed of layers of CaCO3 crystals that are interspaced with small quantities of organic components, is one of the toughest known b ...
2019Influence of ply-angle on fracture in antisymmetric interfaces of CFRP laminates
John Botsis, Georgios Pappas, Charlie Joseph Simon Blondeau
Laminated composites are prone to fracture at layer interfaces. Such damage impairs their structural response and engenders important constraints in design. In this work, the influence of ply orientation on crack growth resistance was studied for three dif ...
ELSEVIER SCI LTD2019Propagation of a planar hydraulic fracture perpendicular to the isotropy plane of a transversely isotropic material
Brice Tanguy Alphonse Lecampion, Haseeb Zia, Fatima-Ezzahra Moukhtari
We investigate the case of a hydraulic fracture (HF) propagating perpendicular to the isotropy plane of a transversely isotropic material: a relevant configuration for the growth of HFs in sedimentary rocks where fractures are propagating vertically across ...
53rd US Rock Mechanics/Geomechanics Symposium2019