Intensity measurements with robot support can now be performed even more efficiently and conveniently with PAK.
By using a FESTO gantry, we can execute large-scale intensity measurements with numerous sub-areas (partial areas).
With the robot, you can approach many positions during a measurement with a high degree of reproducibility. Any geometries can be measured, both with a wall and a ceiling system for objects of different sizes.
During the preparation of the measurement, a 3D hand-held scanner EVA from the company Artec3D is used, which enables a high-precision acquisition of the object geometry. To perform a measurement, a measurement surface across the scanned surface is generated. This measurement surface can be disassembled into thousands of partial surfaces.
The robot moves the probe from one sub-area to the next. You perform reproducible measurements very easily.
Data analysis itself is carried out in the PAK graphics, as before.
In the given example, you can see the intensity above an aluminum plate which was excited by airborne sound as well as by structure-borne sound through a shaker.
The bending waves of the plate caused by the airborne sound excitation lead in a time-weighted average to an intensity emission mainly perpendicular to the plate. The punctual excitation of the plate by the shaker generates free bending waves at the natural frequencies of the plate. The plate emits the waves to both sides.
Positive and negative intensity vectors occur; energy is removed from the near-field emissions. This intensity representation in the plate's near-field makes such phenomena visible which would not be possible so easily with sound localization in the far-field.