Identification of modal strains using sub-microstrain FBG data and a novel wavelength-shift detection algorithm
详细信息 查看全文
- 作者：Dimitrios Anastasopoulosa ; dimitrios.anastasopoulos@bwk.kuleuven.be" class="auth_mail" title="E-mail the corresponding author ; Patrizia Morettia ; Thomas Geernaertb ; Ben De Pauwb ; Urszula Nawrotb ; Guido De Roecka ; Francis Berghmansb ; Edwin Reyndersa
- 关键词：Dynamic strain sensing ; Fiber optic sensors ; Condition monitoring ; System identification ; Operational modal analysis ; Peak-shift algorithms
- 刊名：Mechanical Systems and Signal Processing
- 出版年：2017
- 出版时间：1 March 2017
- 年：2017
- 卷：86
- 期：part_PA
- 页码：58-74
- 全文大小：2229 K
文摘
- •
Modal strains are attractive for SHM because of the high sensitivity to local damage.
- •
Operational strain levels are often in the sub-microstrain range.
- •
Sub-microstrain accuracy is obtained with standard FBGs and a novel optical signal processing algorithm.
- •
Subsequent system identification leads to accurate modal strains.
- •
Both bending and torsion warping strain mode shapes of an I-shaped steel beam are accurately identified.