Reliability assessment of measurement accuracy for FBG sensors used in structural tests of the wind turbine blades based on strain transfer laws

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Zheng Liu (Author) Other; Xin Liu (Author) Other; Shun-Peng Zhu (Author) Other; Pingyu Zhu (Author) Other; Waixi Liu (Author) Other; José A. F. O. Correia (Author) FEUP; Abílio M. P. de Jesus (Author) FEUP

Journal

Title: Engineering Failure Analysis

Vol. 112

Pages: 1-12

ISSN: 1350-6307

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-00R-XJ9

DOI: 10.1016/j.engfailanal.2020.104506

Abstract (EN): FBG sensors are often packaged within composites before they are pasted on the blade surface, and many studies have shown that the materials, fatigue properties, geometric parameters, etc. of intermediate layer have influences on the measuring accuracy of the FBG sensors. Thus, this paper established an reliability calculation model based on strain transfer efficiency for the measuring accuracy of FBG sensors packaged by composites, analyzed the influences of material properties and geometric parameters of the adhesive layer on the performance of FBG sensors based on finite element analysis (FEA) method, and then compared the differences of strain transfer efficiency and reliability of the FBG sensors under different load conditions. The results show that the bond length and the bond thickness of the adhesive layer have greater influences on the performance of the FBG sensors compared with other parameters, both the strain transfer efficiency and the reliability of the FBG sensors will reduce over time under suddenly applied load and increase with increasing frequency of the alternating load.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12