TY - JOUR
T1 - Damage identification research on beam structures by integrating multiple modal parameters
AU - Duan, Jingbo
AU - Wang, Wenjie
AU - Zhou, Weiyong
N1 - Publisher Copyright:
© 2019 Jingbo Duan, et al.
PY - 2019
Y1 - 2019
N2 - A new damage identification method with a fusion index to locate the damage position and identify the damage extent of beam structures is presented by integrating the modal strain energy and natural frequency sensitivity. The modal strain energy, which is with the limitation on obtaining the damage extent, is adopted to locate the damage position with avoiding the interference of structure itself. The natural frequency sensitivity, which is with false detection and interference happening when solely used, is adopted for identifying the damage extent. In order to further improve the precision of the damage quantification, additional masses are added on the beam structure to obtain more information about the natural frequency sensitivity. Then, the fusion index for damage identification is established through combining the modal strain energy and the natural frequency sensitivity before and after adding masses on beam structures. The results obtained by finite element analysis and experimental tests show that the presented method can locate and quantify damages on beam structures in an accurate and convenient way.
AB - A new damage identification method with a fusion index to locate the damage position and identify the damage extent of beam structures is presented by integrating the modal strain energy and natural frequency sensitivity. The modal strain energy, which is with the limitation on obtaining the damage extent, is adopted to locate the damage position with avoiding the interference of structure itself. The natural frequency sensitivity, which is with false detection and interference happening when solely used, is adopted for identifying the damage extent. In order to further improve the precision of the damage quantification, additional masses are added on the beam structure to obtain more information about the natural frequency sensitivity. Then, the fusion index for damage identification is established through combining the modal strain energy and the natural frequency sensitivity before and after adding masses on beam structures. The results obtained by finite element analysis and experimental tests show that the presented method can locate and quantify damages on beam structures in an accurate and convenient way.
KW - Additional masses
KW - Beam structures
KW - Damage identification
KW - Frequency sensitivity
KW - Modal strain energy
UR - http://www.scopus.com/inward/record.url?scp=85075191416&partnerID=8YFLogxK
U2 - 10.21595/jve.2019.20328
DO - 10.21595/jve.2019.20328
M3 - Article
AN - SCOPUS:85075191416
SN - 1392-8716
VL - 21
SP - 1888
EP - 1903
JO - Journal of Vibroengineering
JF - Journal of Vibroengineering
IS - 7
ER -