Open AccessCrack identification in beam by antiresonant frequencies
Author(s) -
Nguyen Tien Khiem,
Nguyen Minh Tuan,
Pham Thi Lien
Publication year - 2021
Publication title -
vietnam journal of mechanics/mechanics
Language(s) - English
Resource type - Journals
eISSN - 2815-5882
pISSN - 0866-7136
DOI - 10.15625/0866-7136/16710
Subject(s) - antiresonance , cantilever , beam (structure) , structural engineering , identification (biology) , acoustics , materials science , engineering , physics , piezoelectricity , botany , biology
The present paper deals with the concept of antiresonance in multiple cracked beams and application for multi-crack identification. First, governing equations for antiresonant frequency are conducted and used for both computing antiresonant frequencies versus crack parameters and measuring-loading colocation and identifying cracks by measured antiresonant frequencies. Then, a procedure is proposed for crack identification in cantilever beam by antiresonant frequencies based on the so-called crack scanning method. Theoretical development is illustrated by numerical examples.