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Ara es mostren els items 78-97 de 99

    • Setmana d'Acollida 2011: informar, transformar, deformar 

      Crespo Artiaga, Daniel (Edicions ETSAB, 2011-05)
      Article
      Accés obert

    • Silver Nanoparticle Coatings on Optical Glass 

      Torres Heredia, Víctor Elías; Popa, Mónica Mihaela; Crespo Artiaga, Daniel; Calderón Moreno, José María (2007-07)
      Text en actes de congrés
      Accés obert
      Es reporta la deposició de monocapes de nanopartícules de Plata en substrats òptics

    • Silver Nanoparticle Coatings on Optical Glass 

      Torres Heredia, Víctor Elías; Popa, Mónica Mihaela; Crespo Artiaga, Daniel; Calderón Moreno, José María (2007-07)
      Text en actes de congrés
      Accés obert
      Es presenta un mètode de producció i deposició de nanopartícules per una via química de baixa energía. Es mostra que les capes dipositades presenten resonància plasmònica

    • Simplistic correlations between molecular electronic properties and inhibition efficiencies: Do they really exist? 

      Kokalj, Anton; Neupane, Shova; Losada Pérez, Patricia; Xie, Chenyang; Crespo Artiaga, Daniel; Renner, Frank U.; Mol, Arjan; Milosev, Ingrid; Lozinšek, Matic; Kapuna, Barbara; Taherib, Peyman; Stavbera, Stojan (2020-07-23)
      Article
      Accés obert
      The often used simplistic correlations between molecular electronic parameters and experimentally determined corrosion inhibition efficiencies are critically evaluated for a set of 24 heterocyclic organic compounds, tested ...

    • Slow beta relaxation in La-based metallic glasses based on mechanical spectroscopy measurements 

      Qiao, Jichao; Pelletier, J. M.; Li, Ning; Crespo Artiaga, Daniel; Yao, Yao (2017-04-01)
      Article
      Accés obert
      Dynamic mechanical relaxations of La-based metallic glasses were investigated by mechanical spectroscopy. In the framework of the mixing enthalpy of constituent atoms, it was found that ß relaxation was less evident by the ...

    • Slow ß relaxation in La-based metallic glasses based on mechanical spectroscopy measurements 

      Qiao, Jichao; Pelletier, J. M.; Li, Ning; Crespo Artiaga, Daniel; Yao, Yao (2017-04-01)
      Article
      Accés obert
      Dynamic mechanical relaxations of La-based metallic glasses were investigated by mechanical spectroscopy. In the framework of the mixing enthalpy of constituent atoms, it was found that ß relaxation was less evident by the ...

    • Spiral vortices between concentric cylinders 

      Sánchez Umbría, Juan; Crespo Artiaga, Daniel; Marqués Truyol, Francisco (1993-06-01)
      Article
      Accés restringit per política de l'editorial
      Spiral vortices appearing in Couette- Taylor flows are studied by means of numerical simulation. Transition curves from Couctte to spiral vortices for different radius ratios and wavenumbers have been calculated in order ...

    • Stress relaxation in high-entropy Pd20Pt20Cu20Ni20P20 metallic glass: experiments, modeling and theory 

      Duan, Yajuan; Qiao, J. C.; Wada, T.; Kato, Hidemi; Pineda Soler, Eloi; Crespo Artiaga, Daniel; Wang, Yun-Jiang (2021-09-01)
      Article
      Accés obert
      The viscoelastic properties of Pd20Pt20Cu20Ni20P20 high-entropy metallic glass were probed by dynamic mechanical spectroscopy and stress relaxation. The experimental evolution of stress can be characterized by the empirical ...

    • Structural evolution of metallic glasses during annealing through in-situ Synchrotron X-ray diffract 

      Pineda Soler, Eloi; Boneu, Francesc; Bruna Escuer, Pere; Pradell Cara, Trinitat; Labrador, Ana; Crespo Artiaga, Daniel (2008-05)
      Article
      Accés obert
      In this work we study the structural evolution of Al and Fe based metallic glass compositions. The samples were obtained as ribbons by melt-spinning, their glass stability and crystallization were analyzed by calorimetry ...

    • Structural heterogeneities and mechanical behavior of amorphous alloys 

      Qiao, Jichao; Wang, Q; Pelletier, J. M.; Kato, Hidemi; Casalini, Riccardo; Crespo Artiaga, Daniel; Pineda Soler, Eloi; Yao, Yao; Yang, Y (2019-07-01)
      Article
      Accés obert
      Although the atomic structure of amorphous alloys, which lacks long-range translational symmetry, may appear homogeneous at the macroscopic scale, their local dynamic and/or static properties however vary significantly ...

    • Structural study of conventional and bulk metallic glasses during annealing 

      Pineda Soler, Eloi; Hidalgo, I.; Bruna Escuer, Pere; Pradell Cara, Trinitat; Labrador, Ana; Crespo Artiaga, Daniel (2007)
      Article
      Accés obert
      Metallic glasses with conventional glass-forming ability (Al-Fe-Nd, Fe-Zr-B, Fe-B-Nb compositions) and bulk metallic glasses (Ca-Mg-Cu compositions) were studied by synchrotron X-ray diffraction during annealing throughout ...

    • Study of medium range reordering by plastic deformation in Cu46Zr46Al8 

      Velasco Cruz, Jorge Enrique; Concustell, Amadeu; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2018-05-05)
      Article
      Accés obert
      The influence of shear in the atomic structure of ternary Cu46Zr46Al8 metallic glass was studied at different temperatures by molecular dynamics (MD) simulation. At temperatures above and below the glass transition temperature ...

    • Study on Mechanical Relaxations of 7075 (Al–Zn–Mg) and 2024 (Al–Cu–Mg) Alloys by Application of the Time-Temperature Superposition Principle 

      Rojas Gregorio, José Ignacio; Nicolas, Jorge; Crespo Artiaga, Daniel (2017-04-05)
      Article
      Accés obert
      The viscoelastic response of commercial Al–Zn–Mg and Al–Cu–Mg alloys was measured with a dynamic-mechanical analyzer (DMA) as a function of the temperature (from 30 to 425ºC) and the loading frequency (from 0.01 to 150 ...

    • Sub-T-g relaxation times of the alpha process in metallic glasses 

      Liu, Chaoren; Pineda Soler, Eloi; Crespo Artiaga, Daniel; Qiao, Jichao; Evenson, Zach; Ruta, Beatrice (2017-09-01)
      Article
      Accés obert
      The current view of structural relaxation in metallic glasses assumes the presence of primary and secondary processes with different activation energies. While the faster, secondary process can be well characterized in the ...

    • Temporal evolution of the domain structure in a Poisson-Voronoi nucleation and growth transformation. Results for one and three dimensions 

      Pineda Soler, Eloi; Crespo Artiaga, Daniel (2008)
      Article
      Accés obert
      The distribution of spatial domain structures originated during one and three dimensional Poisson-Voronoi transformations are computed analytically extending the recently obtained re- sults for the two dimensional case. ...

    • Temporal evolution of the domain structure in a Poisson-Voronoi transformation 

      Pineda Soler, Eloi; Crespo Artiaga, Daniel (Institute of Physics, 2007-06-07)
      Article
      Accés obert
      The temporal evolution of the domain size and free boundary distributions is calculated for a Poisson–Voronoi transformation. In this kind of transformation a set of randomly distributed domain seeds start growing sim ...

    • Tensegrity ring for a sports arena formfinding & testing 

      Peña, Diana; Llorens Duran, Josep Ignasi de; Sastre Sastre, Ramon; Crespo Artiaga, Daniel; Martínez, Joshua (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      The current prototype’s key contribution to the field of light-weight structures is that it is the first time that a pure tensegrity ring has been used in place of a compression ring. This design features a cladding ...

    • Tensegrity ring for a sports arena formfinding and testing 

      Peña Villamil, Diana Maritza; Llorens Duran, Josep Ignasi de; Sastre Sastre, Ramon; Crespo Artiaga, Daniel; Tristancho Martínez, Joshua (2011)
      Text en actes de congrés
      Accés obert
      The current prototype’s key contribution to the field of light-weight structures is that it is the first time that a pure tensegrity ring has been used in place of a compression ring. This design features a cladding ...

    • Transition from stress-driven to thermally activated stress relaxation in metallic glasses 

      Qiao, Jichao; Wang, Yun-Jiang; Zhao, L. Z.; Dai, L. H.; Crespo Artiaga, Daniel; Pelletier, J. M.; Keer, L. M.; Yao, Y (American Physical Society, 2016-09-21)
      Article
      Accés obert
      The short-range ordered but long-range disordered structure of metallic glasses yields strong structural and dynamic heterogeneities. Stress relaxation is a technique to trace the evolution of stress in response to a fixed ...

    • Unified perspective on structural heterogeneity of a LaCe-based metallic glass from versatile dynamic stimuli 

      Xu, Z R; Yang, D. S.; Qiao, Jichao; Pelletier, J. M.; Crespo Artiaga, Daniel; Pineda Soler, Eloi; Wang, Yun-Jiang (2020-10-01)
      Article
      Accés obert
      Dynamic mechanical relaxation, stress relaxation and creep were performed in a La56.16Ce14.04Ni19.8Al10 metallic glass with pronounced relaxation features. The evolution of the microstructural heterogeneity with temperature ...