Recent Submissions

  • Foam flow of oil-refrigerant R12 mixture in a small diameter tube

    Poiate Jr., Edgard; Gasche, José Luiz Autor UNESP (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2006) [Artigo]
    This paper presents an experimental investigation of the mineral oil ISO VG10-refrigerant R12 mixture flow with foam formation in a straight horizontal 3.22 mm ID, 6.0 m long tube. An experimental apparatus was designed ...
  • Predictive maintenance of a reducer with contaminated oil under an excentrical load through vibration and oil analysis

    Gonçalves, Aparecido Carlos Autor UNESP; Silva, João Batista Campos Autor UNESP (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2011) [Artigo]
    Among all Predictive Maintenance techniques the oil analysis and vibration analysis are the most important for monitoring some systems. The integration of these techniques has the potential to revolutionize industrial ...
  • Using longitudinal metallic stringers to reduce wave attenuation for water leakage detection in plastic pipes

    Lima, L. P. M. Autor UNESP; Bazani, M. A. Autor UNESP; Paschoalini, A. T. Autor UNESP; Desmet, W.; Pluymers, B.; Moens, D.; Vandemaele, S. (Proceedings Of International Conference On Noise And Vibration Engineering (isma2020) / International Conference On Uncertainty In Structural Dynamics (usd2020), 2020) [Trabalho apresentado em evento]
    Many leakage detection techniques used in water distribution pipelines rely on the vibration response caused by the leak and, therefore, are limited by the capabilities of the pipe, fluid and its surroundings of carrying ...
  • Obtaining flow curve for viscoplastic fluids through inclined open-channel apparatus

    Sao, Yuri Taglieri Autor UNESP; Pereira, Joao Batista Autor UNESP; Fiorot, Guilherme Henrique; Maciel, Geraldo de Freitas Autor UNESP (Journal Of The Brazilian Society Of Mechanical Sciences And Engineering, 2021) [Artigo]
    Non-Newtonian fluids are commonly seen in industrial processes, such as those of the oil and mining industry, and in natural flows, like dam ruptures, landslides or mud flows. The hydrodynamic modeling of such processes/phenomena ...
  • Influence of Nickel on the Microstructure, Mechanical Properties, and Corrosion Resistance of Laser-Welded Super-Duplex Stainless Steel

    Cruz Junior, E. J. da; Gallego, J. Autor UNESP; Settimi, A. G.; Gennari, C.; Zambon, A.; Ventrella, V. A. Autor UNESP (Journal Of Materials Engineering And Performance, 2021) [Artigo]
    Super-duplex stainless steel (SDSS) exhibits an austenite-ferrite dual-phase structure, which promotes many benefits upon single-phase grades, such as high mechanical strength and corrosion resistance. Welding process ...
  • Optimal linear control design applied to the synchronism of vocal folds with asymmetric stiffness

    Souza e Silva Alarcao, Sunamita Autor UNESP; Chavarette, Fabio Roberto Autor UNESP; Vandana (Acta Scientiarum-technology, 2020) [Artigo]
    The emission of sounds is an important means of communication between animals, which helps them to find a partner, establish their territory, and even alert other members of a population about a possible threat. In human ...
  • Effect of asymmetry in the restoring force of the click mechanism in insect flight

    Abolfathi, Ali; Changizi, M. Amin; Brennan, Michael J. Autor UNESP; IOP (13th International Conference On Motion And Vibration Control (movic 2016) And The 12th International Conference On Recent Advances In Structural Dynamics (rasd 2016), 2016) [Trabalho apresentado em evento]
    The aim of this paper is to examine the effect of asymmetry in the force-deflection characteristics of an insect flight mechanism on its nonlinear dynamics. An improved simplified model for insect flight mechanism is ...
  • Diverter damper force analysis and stress intensity factors for its double fillet welds by boundary element method

    de Souza Schiara, Leandro; Paschoalini, Amarildo Tabone Autor UNESP (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2021) [Artigo]
    Mechanisms usually transmit power by welded links into a shaft. Should this weld be partial, like fillet welds, there will be an area of stress concentration that could behave like a crack due to sharp corners. These can ...
  • Prognosis and Detection of Experimental Failures in Open Field Diesel Engines Applying Wienerˈs Artificial Immunological Systems

    Outa, Roberto; Chavarette, Fábio Roberto Autor UNESP; Toro, Paulo Fernando; Gonçalves, Aparecido Carlos Autor UNESP; Santos, Lucas Henrique dos Autor UNESP (Journal of Applied and Computational Mechanics, 2021) [Artigo]
    The high costs of open-field diesel engines arise from the lack of maintenance of these systems. Thus, the maintenance of this equipment has been treated as a great challenge, as some methods of data monitoring are not ...
  • A stochastic model for the speed of leak noise propagation in plastic water pipes

    Scussel, O. Autor UNESP; Seçgin, A.; Brennan, M. J. Autor UNESP; Muggleton, J. M.; Almeida, F. C.L. Autor UNESP (Journal of Sound and Vibration, 2021) [Artigo]
    A good estimate of the speed of leak noise propagation is necessary to pinpoint the location of a leak using acoustic correlators. Models currently exist for this purpose, but they do not consider uncertainties in the pipe ...
  • On the use of the GP-NARX model for predicting hysteresis effects of bolted joint structures

    de Oliveira Teloli, Rafael Autor UNESP; Villani, Luis G.G.; Silva, Samuel da Autor UNESP; Todd, Michael D. (Mechanical Systems and Signal Processing, 2021) [Artigo]
    Structures joined by lap-joints can present complex nonlinear dynamic behavior as a function of the stress to which the lap-joint is subjected, including contact stiffness variations and softening, along with hysteresis ...
  • Some features of the acceleration impulse response function

    Iwanaga, M. K. Autor UNESP; Brennan, M. J. Autor UNESP; Tang, B.; Scussel, O. Autor UNESP; Almeida, F. C.L. Autor UNESP (Meccanica, 2021) [Artigo]
    Impulse response functions (IRFs) and frequency response functions (FRFs) are fundamental quantities that describe the dynamic behaviour of a linear vibrating system in the time and frequency domains respectively. The ...
  • Autoregressive model extrapolation using cubic splines for damage progression analysis

    Yano, Marcus Omori Autor UNESP; Villani, Luis G. G.; da Silva, Samuel Autor UNESP; Figueiredo, Eloi (Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2021) [Artigo]
    The application of Structural Health Monitoring (SHM) methods focuses mainly on its initial levels of the hierarchy of damage identification. The contribution of this paper is to propose a new strategy that allows going ...
  • Bayesian model identification of higher-order frequency response functions for structures assembled by bolted joints

    Teloli, Rafael de O. Autor UNESP; da Silva, Samuel Autor UNESP; Ritto, Thiago G.; Chevallier, Gaël (Mechanical Systems and Signal Processing, 2021) [Artigo]
    This paper proposes a procedure to identify a stochastic Bouc-Wen model for describing the dynamics of a structure assembled by bolted joints considering vibration data. The proposed identification approach is expressed ...
  • Variation of the Penetration Effort in an Artificial Tissue by Hypodermic Needles

    Gonçalves, Aparecido Carlos Autor UNESP; Cavassana, Sidnei Autor UNESP; Chavarette, Fábio R. Autor UNESP; Outa, Roberto; Casarin, Samuel J. Autor UNESP; Corazza, Adalberto Vieira (Journal of Healthcare Engineering, 2020) [Artigo]
    Fear of injection-related pain is a drawback to injectable therapy. Hypodermic injections are a cause for great anxiety and reduced adherence to the subcutaneous application of insulin for glycemic control in diabetics or ...
  • Detecting Punctual Damage to Gears through the Continuous Morlet Wavelet Transform

    Pereira, Andre Luis Vinagre Autor UNESP; Gonçalves, Aparecido Carlos Autor UNESP; Ribeiro, Rubens Autor UNESP; Chavarette, Fábio Roberto Autor UNESP; Outa, Roberto (Shock and Vibration, 2020) [Artigo]
    In predictive maintenance, vibration signal analyses are frequently used to diagnose reducer failures because these analyses contain information about the conditions of the mechanical components. Reducer vibration signals ...
  • An Efficient Approach to Define the Input Stimuli to Suppress Epileptic Seizures Described by the Epileptor Model

    Brogin, João Angelo Ferres Autor UNESP; Faber, Jean; Bueno, Douglas Domingues Autor UNESP (International Journal of Neural Systems, 2020) [Artigo]
    Epilepsy affects about 70 million people in the world. Every year, approximately 2.4 million people are diagnosed with epilepsy, two-thirds of them will not know the etiology of their disease, and 1% of these individuals ...
  • Estimating the spectrum of leak noise in buried plastic water distribution pipes using acoustic or vibration measurements remote from the leak

    Scussel, O. Autor UNESP; Brennan, M. J. Autor UNESP; Almeida, F. C.L. Autor UNESP; Muggleton, J. M.; Rustighi, E.; Joseph, P. F. (Mechanical Systems and Signal Processing, 2021) [Artigo]
    An appropriate model of leak noise at source is necessary in analytical and numerical approaches to investigate the characteristics of leak noise measured remotely from the leak in buried water pipes. It is extremely ...
  • A new pool boiling heat transfer correlation for wetting dielectric fluids on metal foams

    Manetti, Leonardo Lachi Autor UNESP; Cardoso, Elaine Maria Autor UNESP; Moita, Ana Sofia Oliveira Henriques (International Journal of Heat and Mass Transfer, 2021) [Artigo]
    Porous structures, as metal foams, can enhance the heat transfer performance. For a safe industrial application, a predictive model for both heat transfer coefficient and maximum heat flux is required. But, there is no ...
  • Influence of the valve-seat gap on the dynamics of reed type valves

    Moimás, Gabriel Biancolin Autor UNESP; Abrego, André Luís Severino Autor UNESP; Bueno, Douglas Domingues Autor UNESP; Gasche, José Luiz Autor UNESP (International Journal of Refrigeration, 2020) [Artigo]
    One of the main parts of refrigeration compressors is the automatic valve system used to control the suction and discharge processes. Experimental studies of these processes in the compressor environment are complex because ...

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