Consideration of an optimal procedure for testing the operability of equipment under seismic disturbances
An optimal single-shaker test procedure is developed for the seismic qualification of Class 1E multicomponent electrical equipment. The method comprises a single test that uses an uniaxial excitation having certain minimum intensity applied at the equipment support location in a predetermined optimal direction. Analytical expressions for the optimal test parameters are obtained by maximizing the risk of component failure during testing. The apriori evaluation of these parameters requires a frequency response test. The optimization problem is expressed as a matrix eigenvalue problem. The primary advantages of the proposed method over the currently employed four-rotation test simulating tri-axial input are reduction of the test duration, minimization of the excitation intensity and elimination of unnecessary overtesting in the vertical direction. The test procedure may be fully automated.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA (USA)
- OSTI ID:
- 6758724
- Report Number(s):
- N-8330806
- Resource Relation:
- Other Information: In Shock and Vibration Inform. Center. The Shock and Vobration, No. 50, Part 4, p. 149-158 (SEE N83-30794 19-31)
- Country of Publication:
- United States
- Language:
- English
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ELECTRONIC EQUIPMENT
MECHANICAL TESTS
NUCLEAR POWER PLANTS
EARTHQUAKES
EXCITATION
SEISMIC EFFECTS
SIMULATION
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
MATERIALS TESTING
NUCLEAR FACILITIES
POWER PLANTS
SEISMIC EVENTS
TESTING
THERMAL POWER PLANTS
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