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Mostrando ítems 21-30 de 32
Artículo
Improving the performance of lead-free piezoelectric composites by using polycrystalline inclusions and tuning the dielectric matrix environment
(IOP Publishing Ltd, 2019-07)
Piezoelectric composites are a class of smart materials which can be manufactured in a scalable manner by additive processes, while catering to a wide range of applications. Recent efforts are directed towards composites ...
Artículo
A new in situ peeling test for the characterisation of composite bonded joints
(Elsevier, 2018-10)
At the moment, bonded joints quality on composites used in aeronautical industry is verified based on the determination of the interlaminar fracture toughness (Gc) obtained by means of the Double Cantilever Beam (DCB) or ...
Artículo
A mechanobiological model for tumor spheroid evolution with application to glioblastoma: a continuum multiphysics approach
(Elsevier, 2023-06)
Background: Spheroids are in vitro quasi-spherical structures of cell aggregates, eventually cultured within a hydrogel matrix, that are used, among other applications, as a technological platform to investigate tumor ...
Artículo
A powerful matrix formalism for stress singularities in anisotropic multi-material corners. Homogeneous (orthogonal) boundary and interface conditions
(Elsevier, 2022-06)
A computational code based on a semianalytic procedure for the determination of the characteristic exponents and the singular stress and displacement fields in multi-material corners is developed. Linear elastic anisotropic ...
Artículo
Fatigue crack initiation and damage characterization in Brazilian test specimens for adhesive joints
(Taylor & Francis, 2014)
The present study is focused on the fatigue failure initiation at bimaterial corners by means of a configuration based on the Brazilian disc specimens. These specimens were previously used for the generalized fracture ...
Artículo
Influence of the size and depth of a circumferential notch on the impact behavior of streetlights. A passive-safety concept
(Elsevier, 2015-07)
Impact tests on weakened streetlights were carried out using a high energy pendulum. The weakening mechanism consists of a circumferential notch at the base of the streetlight. The objective is twofold: firstly to reduce ...
Artículo
Experimental study of the size effect on transverse cracking in cross-ply laminates and comparison with the main theoretical models
(Elsevier, 2019-01)
Transverse cracking of off-axis plies is typically the first step of some failure mechanisms in long fiber reinforced laminated composites. It is well known that the off-axis ply thickness affects strongly the strain level ...
Artículo
Influence of Materials of Moulds and Geometry of Specimens on Mechanical Properties of Grouts Based on Ultrafine Hydraulic Binder
(MDPI, 2024-04)
Ultrafine hydraulic binder grout injection is a technique utilised for repairing masonry, either to connect sections, seal joints, or fill voids due to its great capacity for penetration and higher mechanical strength than ...
Artículo
A simple stress-based failure criterion for predicting unfolding failure
(Elsevier Ltd., 2024-06)
Corners of highly curved composite laminates experience unfolding failure when they are loaded under opening bending moments. This work provides a comprehensive experimental test campaign and a detailed stress analysis to ...
Artículo
A least squares procedure for the evaluation of multiple generalized stress intensity factors at 2D multimaterial corners by BEM
(Elsevier, 2012-03)
Detailed characterization of linear elastic stress states at corners and crack tips requires knowledge of the stress singularity orders, the characteristic angular functions and the generalized stress intensity factors ...