Exploració per tema "composites"

Ara es mostren els items 1-20 de 24

    • An introduction to FE2 multi-scale methods and why HPC is so crucial 

      Giuntoli, Guido; Vázquez, Mariano; Oller Martínez, Sergio Horacio (Barcelona Supercomputing Center, 2018-04-24)
      Text en actes de congrés
      Accés obert

    • Analysis of post-tensioned structures by means of a constitutive serial-parallel rule of mixtures 

      Jiménez Reyes, Sergio (Universitat Politècnica de Catalunya, 2018-06-14)
      Projecte Final de Màster Oficial
      Accés obert
      The main purpose is to test a reliable method based on a three-dimensional (3D) finite-element (FE) model to simulate the constitutive behavior of reinforced concrete structures strengthened with post-tensioned tendons. ...

    • Characterization and treatments of oil palm frond fibers and its suitability for technical applications 

      Ventura Casellas, Heura; Morón Soler, Moises; Ardanuy Raso, Mònica (2014-09-29)
      Article
      Accés restringit per política de l'editorial
      The aim of this paper is to explore the potential of oil palm frond fibers (OPFf) for technical applications such as composite reinforcement. For this purpose, fibers obtained from frond wastes were subjected to various ...

    • Comparison of the performance of aircraft repair patches consisting of riveted lap joints on aluminium and composite substrates 

      Pitta, Siddharth; Rojas Gregorio, José Ignacio; Crespo Artiaga, Daniel (2017)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      One of the major contributions to aircraft operational costs corresponds to maintenance. This is a time consuming and expensive process, but necessary, for instance, to detect early formation of cracks, monitoring crack ...

    • Development of natural fiber reinforced polypropylene-based biocomposites 

      Moreno Prats, Coia (Universitat Politècnica de Catalunya, 2022-06-16)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Realitzat a/amb:   Széchenyi István University/University of Gyor
      El polipropilè és un termoplàstic que exhibeix bones propietats mecàniques similars a les del polietilè. La principal diferència entre aquests dos polímers és la presència d'un grup metil adjuntat als àtoms alterns ...

    • Dielectric properties of various polymers (PVC, EVA, HDPE, and PP) reinforced with ground tire rubber (GTR) 

      Mujal-Rosas, Ramon Maria; Marín Genescá, Marcos; Ballart Prunell, Jordi (2015-05-01)
      Article
      Accés restringit per decisió de l'autor
      Mass production of tires as well as its difficult storage or elimination is a real environmental problem. Various methods for recycling tires are currently used, such as mechanical crushing, which puts vulcanized rubber, ...

    • Estudio constitutivo de materiales compuestos laminados sometidos a cargas cíclicas 

      Mayugo Majó, Joan Andreu (Universitat Politècnica de Catalunya, 2003-09-22)
      Tesi
      Accés obert
      La tesis propone una metodología para el análisis de la degradación a fatiga que produce la aplicación de cargas cíclicas en un composite laminado de fibras largas.<br/>En primer lugar se han estudiado los mecanismos de ...

    • FIB/FESEM experimental and analytical assessment of R-curve behavior of WC-Co cemented carbides 

      Tarragó Cifre, Jose María; Jiménez Piqué, Emilio; Schneider, Ludwig; Casellas Padró, Daniel; Torres, Y.; Llanes Pitarch, Luis Miguel (2015-10-01)
      Article
      Accés obert
      Exceptional fracture toughness levels exhibited by WC-Co cemented carbides (hardmetals) are due mainly to toughening derived from plastic stretching of crack-bridging ductile enclaves. This takes place due to the development ...

    • Fibrin association at hybrid biointerfaces made of clot-binding peptides and polythiophene 

      Puiggalí Jou, Anna; Valle Mendoza, Luis Javier del; Armelín Diggroc, Elaine Aparecida; Alemán Llansó, Carlos (2016-10)
      Article
      Accés obert
      The properties as biointerfaces of electroactive conducting polymer-peptide biocomposites formed by poly(3,4-ethylenedioxythiophene) (PEDOT) and CREKA or CR(NMe)EKA peptide sequences (where Glu has been replaced by ...

    • Fracture toughness of cemented carbides: Testing method and microstructural effects 

      Sheikh, Saad; M'Saoubi, Rachid; Flasar, Petr; Schwind, Martin; Persson, Tomas; Yang, Jing; Llanes Pitarch, Luis Miguel (2015-03-01)
      Article
      Accés obert
      Fracture toughness is one the most important parameters for design applications and performance assessment of WC-Co cemented carbides (hardmetals). Different from hardness, fracture toughness is commonly a property more ...

    • Geometry of nanoindentation cube-corner cracks observed by FIB tomography: Implication for fracture resistance estimation 

      Cuadrado Lafoz, Nuria; Seuba, J.; Casellas Padró, Daniel; Anglada, M.; Jiménez Piqué, Emilio (Elsevier, 2015-09-01)
      Article
      Accés obert
      When indenting a brittle material with a sharp indenter, cracks can be generated at the corners of the imprint. From the length of these cracks, the fracture resistance can be estimated. This technique is simple and allows ...

    • Hydrofoils design for a Europe dinghy 

      Mañé Ubalde, Santiago (Universitat Politècnica de Catalunya, 2021-06-22)
      Treball Final de Grau
      Accés obert
      This bachelor final thesis contains the development of a hydrofoil kit to be installed in an International Europe Class dinghy. It includes an aerodynamics and hydrodynamics theoretical introduction, as well as a general ...

    • In vivo osteogenic potential of biomimetic hydroxyapatite/collagen microspheres: Comparison with injectable cement pastes 

      Cuzmar, Erika; Pérez Antoñanzas, Román; Manzanares, Maria Cristina; Ginebra Molins, Maria Pau; Franch, Jordi (2015-07-01)
      Article
      Accés obert
      Realitzat a/amb:   Tan'guk Taehakkyo / Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animal / Universitat de Barcelona. Departament de Patologia i Terapèutica Experimental
      The osteogenic capacity of biomimetic calcium deficient hydroxyapatite microspheres with and without collagen obtained by emulsification of a calcium phosphate cement paste has been evaluated in an in vivo model, and ...

    • Intra- and extra-gallery reactions in tri-functional epoxy polymer layered silicate nanocomposites 

      Hutchinson, John M.; Shiravand, Fatemeh; Calventus Solé, Yolanda (2012-09-05)
      Article
      Accés restringit per política de l'editorial
      Achieving a high degree of exfoliation in epoxy-based polymer layered silicate (PLS) nanocomposites is crucial to their successful industrial application, but has hitherto proved elusive. In this work, a system is presented ...

    • Nanometric polythiophene films with electrocatalytic activity for non-enzymatic detection of glucose 

      Hocevar, Marcele A.; Fabregat Jové, Georgina; Armelín Diggroc, Elaine Aparecida; Ferreira, Carlos Arthur; Alemán Llansó, Carlos (2016-06-01)
      Article
      Accés obert
      Electrochemical detection of glucose using simple polymeric electrodes without the assistance of enzymatic or inorganic catalysts (i.e. metals or metal oxides) has been issued a challenge to the scientific community. In ...

    • Peeling failure in beams strengthened by plate bonding. A design proposal 

      Oller Ibars, Eva (Universitat Politècnica de Catalunya, 2005-09-10)
      Tesi
      Accés obert
      La necesidad de refuerzo estructural en una infraestructura existente puede venir motivada por la aparición de nuevos condicionantes de uso o por la degradación de los materiales. Desde finales de los años sesenta, la ...

    • Polypyrrole-Supported Membrane Proteins for Bio-Inspired Ion Channels 

      Pérez Madrigal, Maria del Mar; Valle Mendoza, Luis Javier del; Armelín Diggroc, Elaine Aparecida; Michaux, Catherine; Roussel, Guillaume; Perpete, Eric; Alemán Llansó, Carlos (2015-01-28)
      Article
      Accés obert
      Biomedical platforms constructed by immobilizing membrane proteins in matrixes made of synthetic organic polymers is a challenge because the structure and function of these proteins are affected by environmental conditions. ...

    • Production of carbon fiber and polypropylene tapes transformed by heat compression moulding 

      Bronchud Molina, Victor (Universitat Politècnica de Catalunya, 2021-03-02)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Instituto Politecnico do Porto
      En les últimes dècades, la producció i consum de plàstic han augmentat considerablement, així com també ho han fet els residus que s'origina al llarg de la producció, tractament i consum d'aquest. És per això, que en el ...

    • Properties and optimal manufacturing conditions of chicken feathers thermoplastics biocomposites 

      Colom Fajula, Xavier; Rahalli, Ahmmed; Cañavate Ávila, Francisco Javier; Carrillo Navarrete, Fernando (2015-01-17)
      Article
      Accés obert
      The aim of this study was the analysis and characterization of composites based on thermoplastics (ethylene vinyl acetate, polypropilene and high-density polyethylene) and chicken feathers. Several composite samples with ...

    • Simulation of an industrial container designed at hydraulic pressure in a composite material with glass fiber 

      Gustavo Suárez, G.; Oller Martínez, Sergio Horacio; Cruz, Javier (2005)
      Text en actes de congrés
      Accés obert
      Most of structural models to pressure, handle high relation mechanical between resistance and weight, either between rigidity and weight, relations that can to fulfill if material uses composite, since this it offers the ...