Exploració per tema "Damage"
Ara es mostren els items 17-36 de 50
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Damage diagnosis in concrete dams with presented expansive damage based on medical propaedeutics
(2017-10)
Article
Accés obertThe maintenance of dams is crucial because of their social, environmental, and economic relevance. However, more than 40% of the world’s dams are more than 40 years old. Furthermore, because of their ageing, damage such ... -
Damage Index for structures with elements of high flexural stiffness and/or brittle behavior
(2018)
Text en actes de congrés
Accés restringit per política de l'editorialStructures with high lateral stiffness and/or with brittle to semi-brittle elements in their lateral resistant system may exhibit a rapid decrease of their shear capacity and a sudden loss of stiffness when lateral cyclic ... -
Damage plastic model for concrete failure under impulsive loadings
(CIMNE, 2015)
Comunicació de congrés
Accés obertThe IRIS 2012 benchmark [1] was devoted to compare various modelling of impact on reinforced concrete slabs. Its aim was to improve the methods used and to provide guidance to assess the integrity of structures impacted ... -
Deep neural networks for the estimation of masonry structures failures under rockfalls
(2023-05-24)
Article
Accés obertAlthough the principal aim of the rockfall management is to prevent rock boulders from reaching the buildings instead of the buildings resisting the boulder impacts, there usually exists a residual risk that has to be ... -
Determination of the state of health of Li-ion batteries : the irreversible entropy production approach
(Universitat Politècnica de Catalunya, 2017-11-24)
Tesi
Accés obertIn recent years, portable applications have experienced an exponential growth and consequently, the demand of batteries has increased accordingly. It is widely known, though, that the performance of batteries decreases ... -
Efficient constitutive model for continuous micro-modeling of masonry structures
(2023-01)
Article
Accés obertMasonry is a composite material often modeled as an equivalent homogenous material. However, the complexity of its micro-structure leads to complex mechanical responses, which are almost impossible to capture accurately ... -
Entropy characterisation of overstressed capacitors for lifetime prediction
(2016-12-30)
Article
Accés obertWe propose a method to monitor the ageing and damage of capacitors based on their irreversible entropy generation rate. We overstressed several electrolytic capacitors in the range of 33 µF–100 µF and monitored their entropy ... -
Evaluation of seismic damage in low-rise buildings of reinforced concrete masonry
(2016)
Text en actes de congrés
Accés restringit per política de l'editorialThe assessment of damage caused by earthquakes in structures, requires the use of nonlinear analysis, either static or dynamic, in order to define the performance of the buildings for the considered hazard levels. In this ... -
Failure pressure analysis of a nuclear reactor prestressed concrete containment building
(Elsevier, 2021-06)
Article
Accés obertThe failure analysis of an existing and operational nuclear power plant reactor containment building subjected to an accident internal pressure is studied in this paper. The computation is based on the Finite Element Method ... -
Finite element analysis of compressive failure in stiffened carbon fiber panels
(Universitat Politècnica de Catalunya, 2011-09-29)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autorThe use of composite materials in the aerospace industry is experiencing a large increase in recent years. Mainly they are used to build commercial aircraft fuselages. COCOMAT project had aimed to study and to improve ... -
Finite element modeling of quasi-brittle cracks in 2D and 3D with enhanced strain accuracy
(2017-11)
Article
Accés obertThis paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation and an isotropic damage constitutive model. The ... -
From continuum mechanics to fracture mechanics: the strong discontinuity approach
(2002-01)
Article
Accés obertThe paper deals with the strong discontinuity approach and shows the links with the decohesive fracture mechanics provided by that approach. On the basis of 1D continuum damage models it is shown that, by introducing some ... -
Global costs of protecting against sea-level rise at 1.5°C to 4.0°C
(2021-07)
Article
Accés obertSea-levels will rise, even with stringent climate change mitigation. Mitigation will slow the rate of rise. There is limited knowledge on how the costs of coastal protection vary with alternative global warming levels of ... -
Image processing, Time of Flight cameras and Sheet of light combination and "Road damage evaluation"
(Universitat Politècnica de Catalunya, 2016-04-08)
Treball Final de Grau
Accés restringit per decisió de l'autorSince the first day in Antwerp, I wanted to work in automotive world, my promoter, Dr. Luc Mertens motivated me about the world of the cameras and their applications. It was a new topic for me, but I think that the vision ... -
Indentation and scratch testing of a WC-6%wtCo cemented carbide: Corrosion effects on load-bearing capability and induced damage
(2020-04-10)
Article
Accés obertIn this work, corrosion effects on the indentation and scratch response of a WC-6%Co hardmetal are investigated. Experimental variables include relative long corrosion times as well as indentation and scratch testing ... -
Microplane model M7 for plain concrete. I: Formulation
(American Society of Civil Engineers (ASCE), 2013-12-01)
Article
Accés restringit per política de l'editorialMathematical modeling of the nonlinear triaxial behavior and damage of such a complexmaterial as concrete has been a long-standing challenge in which progress has been made only in gradual increments. The goal of this ... -
Model-wise algorithm for the resolution of fatigue problems
(CIMNE, 2015)
Text en actes de congrés
Accés obertThe present work presents a general constitutive model formulation and a numerical algorithm for automatically selecting the appropriate coupling of damage and plasticity as a function of the number of cycles the material ... -
Modeling of the behavior in high-cycle fatigue based on the coupling plasticity-damage in a mesoscopic scale
(CIMNE, 2015)
Comunicació de congrés
Accés obertThe methods of prediction of lifespan in high cycle fatigue are under development since decades and are used by engineers to dimension the structures. The purpose of the work presented in this paper is to establish a ... -
Numerical modelling of masonry shear walls failure mechanisms
(2014)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents an investigation on the ability of two alternative FE-based numerical methods to simulate the in-plane strength and collapse of brick masonry shear walls. The methods considered consist of a meso-model, ... -
On the discrete constitutive models induced by strong discontinuity kinematics and continuum constitutive equations
(2000-11)
Article
Accés obertOn the basis of continuum constitutive models (stress vs. strain), the introduction of strong discontinuity kinematics (considering jumps in the displacement fields across a discontinuity interface) induces projected ...