Miguel González Herráez
Technical University of Madrid
Photonic-crystal fiberOpticsDouble-clad fiberFinite element methodFour-wave mixingSlow lightTransverse planeComposite materialBrillouin zoneDispersion (optics)Compression (physics)Materials scienceOptical fiberConstitutive equationMicromechanicsFracture (geology)Brillouin scatteringOptoelectronicsFiberFracture mechanicsStructural engineeringShear (sheet metal)Fracture toughness
44Publications
12H-index
1,202Citations
Publications 43
Newest
#1Zhongwen ZhanH-Index: 19
#2Mattia CantonoH-Index: 10
Last. Shuang YinH-Index: 1
view all 12 authors...
Source
#1Alireza Rafie (TMU: Tarbiat Modares University)H-Index: 1
#2Hamidreza Madadi (TMU: Tarbiat Modares University)H-Index: 4
Last. Miguel González Herráez (UPM: Technical University of Madrid)H-Index: 12
view all 4 authors...
2 CitationsSource
#1N. Pichler (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 2
#2Miguel González Herráez (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 12
Last. John Botsis (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 37
view all 3 authors...
Abstract 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 ∘ / / − 45 ∘ interface is investigated under remote mixed mode loading and compared to a 0 ∘ / / 0 ∘ layout. Several experiments were conducted under three mode mixities ϕ = 0.15 , 0.35 and 0.65 as well as pure modes I ( ϕ = 0 ) and II ( ϕ = 1.0 ) following the established st...
6 CitationsSource
#1Miguel González Herráez (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 12
#2N. Pichler (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 2
Last. John Botsis (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 37
view all 3 authors...
Abstract Delamination is a well-known damage mode exhibited by laminated composites which has been extensively studied in unidirectional laminates (UD). In this work, a novel strategy consisting of the introduction of a small interlaminar defect to enhance the fracture resistance to delamination of UD composites is presented. This toughening concept is based on the simultaneous propagation of multiple interlaminar cracks along different interfaces. A preliminary numerical study showed that the m...
4 CitationsSource
#1Miguel González Herráez (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 12
#2N. Pichler (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 2
Last. John Botsis (EPFL: École Polytechnique Fédérale de Lausanne)H-Index: 37
view all 5 authors...
Abstract 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 ° , ± 45 ° and ± 60 ° ) and compared to a unidirectional baseline under remote mode II loading. Fracture toughness at initiation was the same regardless of the ply orientation, nevertheless, the energy dissipated during crack propagation increased with...
4 CitationsSource
#1Miguel González Herráez (UPM: Technical University of Madrid)H-Index: 12
#2Andrew C. Bergan (LaRC: Langley Research Center)H-Index: 8
Last. C. González (UPM: Technical University of Madrid)H-Index: 4
view all 4 authors...
Abstract A computational micromechanics (CMM) model is developed to analyze fiber kinking, which is a failure mechanism that takes place in fiber-reinforced composites when they are loaded under longitudinal compression. The CMM model consists of a single AS4 carbon fiber with an initial misalignment embedded in an 8552 polymer matrix. The deformation of the model is governed by periodic boundary conditions (PBC). The relatively simple CMM model enables the evaluation of the role played by initi...
5 CitationsSource
#1Andrew C. Bergan (LaRC: Langley Research Center)H-Index: 8
#2Miguel González Herráez (IMDEA)H-Index: 12
Last. Claudio S. Lopes (IMDEA)H-Index: 24
view all 4 authors...
Abstract A new mesoscale material model is proposed to analyze structures that fail by the fiber kinking damage mode. The model is formulated following the fiber kinking theory such that the interaction of shear nonlinearity and fiber rotation are tracked throughout the loading history. The model is implemented as a user-defined material in a commercial finite element code. A decomposition algorithm is introduced in the finite element implementation to decouple the mesh size and kink band width....
6 CitationsSource
#1Miguel González Herráez (UPM: Technical University of Madrid)H-Index: 12
#2Javier Segurado (UPM: Technical University of Madrid)H-Index: 33
Last. Claudio S. Lopes (IMDEA)H-Index: 24
view all 4 authors...
Abstract Within the framework of computational micromechanics (CMM), a simulation toolset is being developed to predict the mechanical behavior of fiber-reinforced polymers from the measured properties and spatial distribution of the different phases and interfaces in the composite. Towards this end, a numerical methodology is proposed herein for the generation of 2D periodic microstructures with arbitrary fiber geometries. A major advantage of the approach presented in this work is the ability ...
6 CitationsSource
#1J.I. Múgica (IMDEA)H-Index: 1
#2Claudio S. Lopes (IMDEA)H-Index: 24
Last. C. González (UPM: Technical University of Madrid)H-Index: 4
view all 6 authors...
Abstract The mechanical properties of woven composites can be predicted by using a multiscale modelling approach. The starting point to its application is the microscale (the level of fibres, matrix and interfaces), that allows the computation of the homogenised behaviour of the yarn. The aim of this work was to predict the yarn-level behaviour of a thermoplastic-based woven composite in order to allow the formulation of a representative constitutive model that can be used to predict ply propert...
4 CitationsSource
#1Sandip Haldar (IMDEA)H-Index: 9
#2Miguel González Herráez (UPM: Technical University of Madrid)H-Index: 12
Last. Claudio S. Lopes (IMDEA)H-Index: 24
view all 5 authors...
Abstract The translaminar fracture behaviors of partially different unidirectional composite systems, constituted by the same carbon fibers but different (thermoset vs. thermoplastic) matrices, were characterized by means of compact tension fracture tests. The resulting crack resistance curves (R-curves) and fracture surfaces, were studied in detail and found to be rather different between those material systems, in spite of the same reinforcing fibers at similar volume fractions. In the attempt...
3 CitationsSource