研究目的
The characteristics and uniqueness of three different measurement technologies, based on distinguished physics and processing grounds, are here compared on a shared test rig with multiple excitations. SLDV, Hi-Speed DIC and Dynamic ESPI are here challenged in a complex and unique matching test for the estimation of FRFs with high spatial resolution, exploiting, as benchmark of the methodologies, a vibrating lightweight rectangular plate.
研究成果
The quality of the FRF obtained from the emerging native full field technologies appeared remarkable when compared to the mature reference of SLDV. The study provided a significant step forward in understanding the cross comparison of what these optical technologies, which belong to different domains and developing paths, can offer nowadays to further extend the experimental characterisation of vibrating components.
研究不足
The study faced limitations such as room heating problems in SLDV tests, unexpected spatial inconsistency in SLDV measurements, and the heavy off-line work required for DIC system data processing. Additionally, the coherence function showed weakness in not revealing the scattering on SLDV receptance maps.
