3D Motion Capture Application To Seismic Tests
At ENEA Casaccia Research Center:
3DVision System And DySCo Virtual Lab
Author(s)
G. De Canio, M. Mongelli & I. Roselli
Abstract
In the last 4 years, a high-resolution 3D motion capture system named 3DVision
was installed at ENEA Casaccia as integration to more conventional
instrumentation for measuring motion parameters during seismic tests, such as
accelerometers, LVDTs, wire transducers and laser displacement sensors. In the
present paper, some examples are illustrated to show the ENEA experiences with
this relatively new technique in comparison to the other consolidated
measurement systems. 3DVision is described in terms of flexibility and accuracy
and specific potentialities are stressed. The main peculiarities of the 3DVision
system derive from its capability of monitoring in real-time the absolute 3D
position of more than a hundred measurement points without locating any active
sensor or cable on the studied structure and on the shaking table, but only by
means of cheap passive markers. Consequently, any risk of instrumentation
damage in case of destructive tests is intrinsically avoided and the acquisition of
hundreds of channels is guaranteed. Within the DySCo virtual lab, the 3DVision
friendly graphical interface for real-time monitoring and its synchronous overlay
function between markers wireframe and tests movies revealed particularly
effective for remote sharing of the experimental campaigns with research
partners via the internet. Also a remarkable contribution is given by the
possibility of integrating and comparing experimental data with FE results at the
same positions, calibrating FEM boundary conditions (materials properties,
model constraints, loads etc.) in order to improve the simulation significance and
reliability for similar cases. Through the DySCO web portal such numerical
simulations and computations can be carried out exploiting the software and
hardware resources available in the ENEA-GRID.
Keywords: 3D motion capture, shaking table test, displacement measurement.
Keywords
3D motion capture, shaking table test, displacement measurement
Related Book
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