APS application example

Excitation of bridges to test dynamic properties


Have you ever heard of the tragic collapse of Tacoma Narrows Bridge in 1940 which was later called the “Pearl Harbor of engineering“? Unfortunately, the structure of the bridge had not been tested the way our APS shakers can test its dynamic properties.

Application example Airplane wing

Airplane wing

Determination of dynamic properties, fatigue testing of substructures

Application example seismic simulation

Seismic Simulation

Earthquake Simulation, Field data replication

Application example forklift


Sine excitation of forklift structure

Reference Projects

Boeing Commercial Airplanes

The APS 400 and 420 shakers were used to do modal testing at the large jet engine.

US Geological Survey

Measuring the dispersive nature of surface waves in the ground (using APS 400)


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Virginia Tech

Portable Tuned Mass Damper Testing for Vibration Control of Pedestrian Bridges (using APS 113)


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Further Applications for ELECTRO-SEIS® Long Stroke Shakers

International leaders in research on vibration serviceability and its application to real world problems, such as Vibration Engineering Section (VES) have used our products for nearly two decades successfully. The APS Dynamics shakers with ball bearings were used testing civil structures such as concrete floors or footbridges in open space conditions.


VES - formerly from the Department of Civil and Structural Engineering at the University of Sheffield - have recently moved to the University of Exeter where they continue their research and consultancy.

Link to Vibration Engineering Section (VES)