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Activity Number:
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282
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Type:
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Topic Contributed
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Date/Time:
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Tuesday, July 31, 2007 : 10:30 AM to 12:20 PM
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Sponsor:
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Section on Physical and Engineering Sciences
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| Abstract - #308508 |
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Title:
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Dynamic Structural Health Monitoring Validation
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Author(s):
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David Banaszak*+
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Companies:
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Air Force Research Laboratory
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Address:
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AFRL/VASV Bldg 65, Wright Patterson, OH, 45344,
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Keywords:
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Calibration ; ANOVA ; Vibration ; Remote Control ; Structures ; Experiments
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Abstract:
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The Air Force invented a calibration technique that allows one person to perform multiple, mechanical end-to-end calibrations of structural dynamics measurement systems. This new technique stimulates dynamic measurement transducers contained in structures, with a measurable mechanical input level such as acceleration or stain. The Air Force evaluated the invention in the lab using a commercial off-the-shelf vibration paging system consisting of a master control unit and 8 individual exciters (pagers). The exciters simulate accelerometers mounted on structures. Air Force engineers validated the technique using a completely randomized block design experiment consisting of three 2-level factors: material, structural thickness and excitation mode. The exciter serial numbers are a blocking factor. The Air Force measured amplitude, frequency and transfer function between the accelerometers.
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