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of 57
pro vyhledávání: '"Matias R. Viotti"'
Autor:
Armando Albertazzi, Matias R. Viotti
Publikováno v:
Journal of Physics: Photonics. 3:042001
There are a large number of engineering measurement demands that can be very well met with optical methods. Among them, there are some that deal with circular or cylindrical geometries, for which Cartesian coordinates are not the ideal. Measurements
Autor:
Márcio Celso Fredel, Matias R. Viotti, Francisco Cavilha Neto, Milton Pereira, Luiz Eduardo dos Santos Paes
Publikováno v:
Optics & Laser Technology. 140:107032
Residual stresses are a concern in weld beads since they increase the susceptibility to cracks and fatigue failure. Conventional methods to reduce these stresses are based on post-processing or the application of additional tools in the process, whic
Publikováno v:
International Journal of Pressure Vessels and Piping. 152:46-55
The oil and gas industry employs long distance pipelines to simplify the transport logistic and to reduce the final costs of petroleum derivatives. For the construction of pipelines, nowadays it is usual the application of pipes which are manufacture
Autor:
L. R. Lothammer, Matias R. Viotti
Publikováno v:
Experimental Mechanics. 57:341-352
Pipelines usually operate under bending and axial stresses, caused by external loads, combined with residual stress distributions (manufacturing stresses), which affect the mechanical behavior of the pipe. Despite its semi-destructive nature, the hol
Publikováno v:
Experimental Mechanics. 57:287-296
Pipes are basic elements used in the construction of pipelines for the long-distance transportation of oil and gas and their derivatives. They can be manufactured by cold forming processes such as UOE and ERW, both widely used in the oil and gas indu
Publikováno v:
Optical Measurement Systems for Industrial Inspection XI.
The accurate determination of the contact area between an instrumented indenter and the material under testing is important for material property measurements. Usually, it is masked by the pile-up or sink-in phenomenon. Due to the wide range of mater
Publikováno v:
Experimental Mechanics. 56:713-722
This paper presents the application of a modular device based on digital speckle pattern interferometry (DSPI) combined with an instrumented indenter, in order to determine bending loads in a reference pipe bench. The system is divided into two modul
Autor:
Mauro Eduardo Benedet, A. Albertazzi, E. S. Barrera, Daniel Pedro Willemann, Celso L. N. Veiga, Matias R. Viotti, A. V. Fantin, F. A. A. Silva
Publikováno v:
Optical Micro- and Nanometrology VII.
Mechanical vibrations, air and thermal instabilities are among the most disturbing agents that make difficult or impossible a successful speckle interferometry measurement in harsh environments. Usually, they destroy the interference signal or, at le
Autor:
Armando Albertazzi, Matias R. Viotti
Publikováno v:
Applied optics. 56(29)
Instrumented indentation has been used to measure mechanical properties, residual stresses, hardness, and viscoelastic properties, among others, due to its fast and nondestructive procedure. The accurate determination of the contact area between the
Publikováno v:
Experimental Mechanics. 56:133-143
Pipelines are usually designed to withstand stresses generated by the internal pressure of the fluid being transported. Nonetheless, internal pressure is only one stress component of the real complex state of stresses acting on their walls. Usually,