TY - GEN
T1 - Linear and nonlinear response of a rectangular plate measured with continuous-scan laser doppler vibrometry and 3D-digital image correlation
AU - Ehrhardt, David A.
AU - Yang, Shifei
AU - Beberniss, Timothy J.
AU - Allen, Matthew S.
N1 - Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2015.
PY - 2015
Y1 - 2015
N2 - Dynamic measurement of real structures, such as panels, can be difficult due to their low mass and complicated deformations under large amplitude loading conditions. These conditions bring to light shortcomings of traditional sensors such as accelerometers, strain gauges, displacement transducers, etc. A majority of these sensors require contact with the structure under test which tends to modify the dynamic response of these light structures. In contrast, a few recently developed techniques are capable of measuring the response over a wide measurement field without contacting the structure, which is ideal for these structures. Two techniques are considered here: continuous-scan laser Doppler vibrometry (CSLDV) and high speed three dimensional digital image correlation (3D-DIC). Both techniques can be used to return real-time deformation shapes under certain conditions; however, measurements will be obtained using post processing here. The linear and nonlinear deformations of a clamped flat plate under steady state sinusoidal loading will be measured using both techniques and compared with a finite element model to assess the relative merits of each measurement approach.
AB - Dynamic measurement of real structures, such as panels, can be difficult due to their low mass and complicated deformations under large amplitude loading conditions. These conditions bring to light shortcomings of traditional sensors such as accelerometers, strain gauges, displacement transducers, etc. A majority of these sensors require contact with the structure under test which tends to modify the dynamic response of these light structures. In contrast, a few recently developed techniques are capable of measuring the response over a wide measurement field without contacting the structure, which is ideal for these structures. Two techniques are considered here: continuous-scan laser Doppler vibrometry (CSLDV) and high speed three dimensional digital image correlation (3D-DIC). Both techniques can be used to return real-time deformation shapes under certain conditions; however, measurements will be obtained using post processing here. The linear and nonlinear deformations of a clamped flat plate under steady state sinusoidal loading will be measured using both techniques and compared with a finite element model to assess the relative merits of each measurement approach.
KW - Continuous scan
KW - Digital image correlation
KW - Laser Doppler vibrometer
KW - Nonlinear deflection
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U2 - 10.1007/978-3-319-15236-3_23
DO - 10.1007/978-3-319-15236-3_23
M3 - Conference contribution
AN - SCOPUS:84946082033
SN - 9783319070032
T3 - Conference Proceedings of the Society for Experimental Mechanics Series
SP - 251
EP - 263
BT - MEMS and Nanotechnology - Proceedings of the 2014 Annual Conference on Experimental and Applied Mechanics
A2 - Starman, LaVern
A2 - Prorok, Barton C.
A2 - Hay, Jennifer
A2 - Shaw, Gordon
PB - Springer
T2 - Annual Conference on Experimental and Applied Mechanics, 2014
Y2 - 2 June 2014 through 5 June 2014
ER -