6 documents found, page 1 of 1
Time-Domain Electromechanical Impedance for Structural Health Monitoring
Vieira Filho, Jozue [UNESP]; Baptista, Fabricio Guimaraes; Farmer, Justin; Inman, Daniel J.; DeRoeck, G.; Degrande, G.; Lombaert, G.; Muller, G.Made available in DSpace on 2020-12-10T19:32:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-01-01; Electromechanical impedance (EMI) technique is a very simple method that can be usefulness in most of Non-Destructive Evaluation (NDE) and Structural Health Monitoring (SHM) systems. A common application of EMI methods is based on computing the frequency response function (FRF), which requires an impeda...
A virtual experiment for the detection of specific features in the frequency re...
Gatti, Gianluca; Marchesiello, Stefano; Brennan, Michael J. [UNESP]; Cunha, A.; Caetano, E.; Ribeiro, P.; Muller, G.Made available in DSpace on 2015-11-03T15:30:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-01-01; This paper presents an investigation into some practical issues that may be present in a real experiment, when trying to validate the theoretical frequency response curve of a two degree-of-freedom nonlinear system consisting of coupled linear and nonlinear oscillators. Some specific features, such as d...
Output only based modal analysis of a reduced scale building using digital came...
Sabino, Danilo Damasceno [UNESP]; Pereira, João Antonio [UNESP]; Abreu, Gustavo Luiz C. M. [UNESP]; Cunha, A.; Caetano, E.; Ribeiro, P.; Muller, G.Made available in DSpace on 2015-11-03T15:30:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-01-01; The article discusses a proposal of displacement measurement using a unique digital camera aiming at to exploit its feasibility for Modal Analysis applications. The proposal discusses a non-contact measuring approach able to measure multiple points simultaneously by using a unique digital camera. A moda...
An investigation into the effects of resonances on the time delay estimate for ...
Almeida, Fabricio C. L. [UNESP]; Brennan, Michael J. [UNESP]; Joseph, Phillip F.; Dray, Simon; Witfield, Stuart; Paschoalini, Amarildo T. [UNESP]Made available in DSpace on 2015-11-03T15:30:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-01-01; In water distribution systems, old metallic pipes have been replaced by plastic pipes due to their deterioration over time. Although acoustic methods are effective in finding leaks in metallic pipes, they have been found to be problematic when applied to plastic pipes due to the high damping within the ...
Numerical and experimental investigation of a vibration system with non-ideal v...
Gonçalves, Paulo J. P. [UNESP]; Silvera, Marcos [UNESP]; Pontes, Bento R. [UNESP]; Cunha, A.; Caetano, E.; Ribeiro, P.; Muller, G.Made available in DSpace on 2015-11-03T18:26:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-01-01; An excitation force that is not influenced by the system's states is said to be an ideal energy source. In real situations, a direct and feedback coupling between the excitation source and the system must always exist. This manifestation of the law of conversation of energy is known as Sommerfeld E...
Nuclear instruments & methods in physics research section a-accelerators spectr...
Abreu, P.; Aglietta, M.; Ahn, E. J.; Albuquerque, Ivone Freire da Mota e; Allard, D.; Allekotte, I.; Allen, J.; Allison, P.; Castillo, J. AlvarezAcesso restrito: Texto completo. p. 92-102; Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-02-28T13:55:21Z No. of bitstreams: 1 __pdn.sciencedirect.com_....0-S0168900211001276-main.pdf: 705611 bytes, checksum: be1943c8aeefcedd5fa515742b173dc0 (MD5); Made available in DSpace on 2012-02-28T13:55:21Z (GMT). No. of bitstreams: 1 __pdn.sciencedirect.com_....0-S0168900211001276-main.pdf: 705611 byt...