ABSTRACT
The displacement response is one of the important parameters to determine the vibration characteristics and the state evaluation of a structure. When studying the structural integrity of a large system, it is much easier to measure accelerations than displacements. However, many engineering standards are based on displacements that are proportional to the stresses in an elastic structure. The displacement can be directly used to determine the accumulated damage. The displacement response is measured by the use of LVDTs and similar direct displacement measuring devices, which require a fixed reference to work properly. The use of optical transducers to measure displacements may be expensive. After measuring a signal of acceleration that is relatively convenient to measure and does not require a set of fixed references on the necessary point of structure, a digital method to double integrate accelerometer data to measure displacements is attempted, which is based on a dynamic loading test of structure.
