BS 2011-2.1Fdb:1973
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Environmental testing. Tests Test Fdb. Random vibration - wide band reproducibility medium
Hardcopy , PDF
01-03-2004
English
15-11-1973
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Foreword
Specification
1 Object
2 Mounting and control
2.1 General
2.2 Mounting of components
2.3 Mounting of equipment
2.4 Reference and control points
3 Frequency response measurements and resonance
searches
3.1 Sinusoidal amplitude
3.2 Frequency response measurement procedure
3.3 Resonance search procedure
4 Vibration motion requirements
4.1 Basic motion
4.2 Distribution
4.3 Acceleration spectral density spectrum and total
r.m.s. acceleration requirements
4.4 Total r.m.s. acceleration values within the
specified frequency range
4.5 Displacement limitations
5 Choice of confirmation method
5.1 Criteria for choice
5.2 Applicability of the recommended confirmation
methods
5.3 Mixed confirmation methods
6 Initial measurements
7 Excitation prior to conditioning
8 Conditioning
9 Final measurements
Appendices
A Confirmation method by swept filter technique
B Confirmation method by fixed filter technique
C Confirmation method by swept sinusoidal technique
Tables
1 Acceleration spectral density and related
sinusoidal amplitude
2 Tolerance limits for true acceleration spectral
density and true total r.m.s. acceleration
3 Total r.m.s. acceleration values
4 Variation in acceleration spectral density plus
instrumentation errors
Figures
1 Determination of peak-notch amplitude ratio Ap/An
2 Peak-notch pairs
3 Tolerance band for distribution of instantaneous
acceleration values
4 Acceleration spectral density spectrum and
tolerance limits
5 Illustration of accumulation of errors
6 Analyser error in notch region
7 Analyser error in peak region
8 Remaining ripple after equalization
Gives the test procedure for wide band random vibration tests, reproducibility medium, applicable to components and equipment which may be subjected to conditions in service involving vibration of a stochastic nature.
| Committee |
GEL/104
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| UNE-EN 13379:2001 | Identical |
| BS EN 147000:1995 | Harmonized system of quality assessment for electronic components. Generic specification. Sockets for use with electrical relays of assessed quality |
| BS EN 116000-3:1996 | Harmonized system of quality assessment for electronic components. Generic specification: electromechanical all-or-nothing relays Test and measurement procedures |
| BS EN 50148:1996 | Electronic taximeters |
| BS CECC 16000-1:1992 | Harmonized system of quality assessment for electronic components. Generic specification: electromechanical all-or-nothing relays General |
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