TY - GEN
T1 - Localized response of damaged structural systems
AU - Bordonaro, Giancarlo G.
AU - Harold, Doug
AU - Hajj, Muhammad R.
AU - Duke, John
PY - 2010
Y1 - 2010
N2 - The effects of cracks in a composite beam-mass system on local and global strain caused by external excitation are examined. The natural frequency of the system varied around 8 Hz. Data from strain gage and fiber optics measurements before and after damaging the beam are compared. The results show a general agreement between the different sets of measurements. The level of noise varied between the different gratings and over different locations in individual gratings. From both sets of measurements, the response of the damaged beam has a lower amplitude in comparison with that of the undamaged beam. This indicates that higher damping is associated with the damage. Different ratios of the amplitudes of the response frequency for the undamaged and damaged beams over the regions where cracks were present than in the regions away from the cracks are obtained. This suggests a change in the shape of the excited mode of the beam when damaged.
AB - The effects of cracks in a composite beam-mass system on local and global strain caused by external excitation are examined. The natural frequency of the system varied around 8 Hz. Data from strain gage and fiber optics measurements before and after damaging the beam are compared. The results show a general agreement between the different sets of measurements. The level of noise varied between the different gratings and over different locations in individual gratings. From both sets of measurements, the response of the damaged beam has a lower amplitude in comparison with that of the undamaged beam. This indicates that higher damping is associated with the damage. Different ratios of the amplitudes of the response frequency for the undamaged and damaged beams over the regions where cracks were present than in the regions away from the cracks are obtained. This suggests a change in the shape of the excited mode of the beam when damaged.
UR - http://www.scopus.com/inward/record.url?scp=84855619928&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855619928&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84855619928
SN - 9781600867422
T3 - Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
BT - 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
T2 - 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Y2 - 12 April 2010 through 15 April 2010
ER -