Designed for the most demanding experimental modal testing applications, these exciters have force ratings up to 650 N (146 lbf) for Type 4827 and 1000 N (225 lbf) for Type 4828. They are ideal for high-precision, single- and multiple-point excitation of extra-large devices, such as locomotives, industrial turbines, heavy-duty pumps and aerospace assemblies.
The most powerful of our modal exciters, Types 4827 and 4828 offer precise and reliable operation in any modal testing scenario, including long-duration tests of outsized mechanical structures as well as applications with MISO and MISO configurations. Suitable for impulse, sine and random signals, they also have a wide frequency range (2 – 5000 Hz) and a peak-to-peak displacement of 50.8 mm (2 in).
General mechanical mobility measurements
Experimental modal analysis, including long-duration testing of mechanical structures
Single- and multiple-point excitation and response modal analysis applications, including SISO, MISO, SIMO and MIMO test configurations
Advanced structural dynamics investigations
Structural damage detection
Finite element model (FEM) or finite element analysis (FEA) correlation
CHARACTERISTICSThese exciters have been developed using rare-earth neodymium magnet technology, to afford them high force-to-weight ratios. When forced-air cooled by an external blower, Types 4827 and 4828 are capable of delivering sine forces up to 650 and 1000 N (146 and 225 lbf), respectively.