The Flexural Rigidity Sensor: Applications in Non-Destructive Testing.
FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY COLO
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The Frank J. Seiler Research Laboratory has developed a flexural rigidity sensor FRS that now makes it possible to measure dynamic flexural deformations of structures in the presence of large linear vibrations. Measurements of this type can be used to provide a spectral signature of a rigid member under varying loading conditions. Changes in the loading or flexural stiffness of the member can be readily identified by characteristic shifts in these spectral signatures. Using these methods, impending structural failures may be identified using the FRS. This compact device is completely portable and has a resolution of 10 to the minus 9th power radian with a flat response from dc to 50 kHz. It offers a wide and intriguing range of applications in non-destructive testing of civil engineering and aerospace structures. Author
- Test Facilities, Equipment and Methods