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MRI: Scanning Laser Vibrometer
for Smart-Structures Research |
The objective of this proposal is to
acquire a high performance scanning laser vibrometer (SLV). The SLV
will 1) provide new and unique experimental capabilities for
smart-structures (and other structural) research, 2) enhance
collaborative research across academic departments, 3) provide
state-of-the-art instrumentation for training of
graduate/undergraduate students, and 4) help recruitment of students
from underrepresented groups. The SLV is based on the principle of
the detection of the Doppler shift of coherent laser light that is
scattered from a small area of the test object. Entire surfaces are
rapidly scanned and automatically probed with flexible and
interactively created scan grids. The SLV performs non-intrusive
measurement of vibrations at a large number of grid points without
adding mass or stiffness to the test structure. The observation of
the mode shapes and spatial features of the vibration is not
conveniently possible without a scanning laser vibrometer. The
proposed SLV is a single, automated, turnkey system that offers all
the advantages of a laser vibrometer integrated with the speed, ease
of use, accuracy and comprehensive data processing and visualization
of a dual-axis laser scanner. The SLV will add advanced experimental
capabilities to modernize the Smart Structures Laboratory at
Clarkson University, which serves many innovative, multidisciplinary
research and education projects. The proposed research will have
very significant impact on the design of aerospace, mechanical, and
civil systems. The planned research will advance the knowledge of
dynamics & control of highly flexible structures such as Gossamer
Spacecraft, inflatable unmanned aerial vehicles, and thin spinning
disks for data storage devices. Health monitoring of civil
infrastructures (bridges and buildings) and aircraft structures will
also be investigated. The measurement features of a SLV are critical
to the success of the planned innovative research activities.
Presentations at technical conferences, journal papers, and web
pages will be used to disseminate the research results widely. The
SLV will enhance experiential project-based learning programs to
attract women and minority students. Both graduate and undergraduate
students will gain experience with state-of-the-art laser based
vibrations measurement techniques. The SLV will positively impact
outreach to the K-12 community of students and teachers through
laboratory demonstrations and web site displays.
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MS Student: |
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Investigators:
Ratneshwar Jha, Goodarz Ahmadi, Pier Marzocca, Edward Sazonov |
Sponsor: NSF |
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