TY - JOUR
T1 - Application of the rapid frequency sweep technique for delamination detection in composite laminates
AU - Diaz Valdes, S.H.
AU - Soutis, C.
PY - 1999/1
Y1 - 1999/1
N2 - As a first step in developing a health monitoring system, the effect of delamination on the natural frequencies of laminated composite beams has been investigated. A piezoceramic patch driven with a linear rapid frequency sweep was used to induce vibrations on the structure and its response registered via piezoelectric film sensors. Modal frequencies were obtained through a method defined here as the maximum amplitude at resonance (MAR), which has proved to be a simple and effective procedure. Changes of the modal frequencies after delamination initiation, compared to those of an uncracked (non-delaminated) specimen, gave a good indication of the degree of damage, especially at high modal frequencies (9-12 kHz).
AB - As a first step in developing a health monitoring system, the effect of delamination on the natural frequencies of laminated composite beams has been investigated. A piezoceramic patch driven with a linear rapid frequency sweep was used to induce vibrations on the structure and its response registered via piezoelectric film sensors. Modal frequencies were obtained through a method defined here as the maximum amplitude at resonance (MAR), which has proved to be a simple and effective procedure. Changes of the modal frequencies after delamination initiation, compared to those of an uncracked (non-delaminated) specimen, gave a good indication of the degree of damage, especially at high modal frequencies (9-12 kHz).
UR - https://www.scopus.com/pages/publications/0033474705
U2 - 10.1177/096369359900800103
DO - 10.1177/096369359900800103
M3 - Article
SN - 0963-6935
VL - 8
SP - 19
EP - 23
JO - Advanced Composites Letters
JF - Advanced Composites Letters
IS - 1
ER -