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BS ISO 7626-2:2015 Mechanical vibration and shock. Experimental determination of mechanical mobility - Measurements using single-point translation excitation with an attached vibration exciter >
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BS ISO 7626-2:2015 Mechanical vibration and shock. Experimental determination of mechanical mobility - Measurements using single-point translation excitation with an attached vibration exciter, 2015
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Overall configuration of the measurement system
- 5 Support of the structure under test
- 5.1 General
- 5.2 Grounded measurements
- 5.3 Ungrounded measurements
- 6 Excitation
- 6.1 General
- 6.2 Excitation waveforms
- 6.2.1 General
- 6.2.2 Discretely dwelled sinusoidal excitation
- 6.2.3 Slowly swept sinusoidal excitation
- 6.2.4 Stationary random excitation
- 6.2.5 Other excitation waveforms
- 6.3 Vibration exciters
- 6.4 Avoidance of spurious forces and moments
- 6.4.1 General
- 6.4.2 Transducer mass loading
- 6.4.3 Transducer rotational inertia loading
- 6.4.4 Exciter attachment restraints
- 7 Measurement of the exciting force and resulting motion response
- 7.1 General
- 7.2 Attachment of transducers
- 7.3 Mass loading and mass cancellation
- 7.4 Signal amplifiers
- 7.5 Calibrations
- 7.5.1 General
- 7.5.2 Operational calibration
- 8 Processing of the transducer signals
- 8.1 Determination of the frequency-response function
- 8.1.1 General
- 8.1.2 Sinusoidal excitation
- 8.1.3 Random excitation
- 8.2 Filtering
- 8.2.1 Sinusoidal excitation
- 8.2.2 Random excitation
- 8.3 Avoidance of saturation
- 8.4 Frequency resolution
- 8.4.1 General
- 8.4.2 Sinusoidal excitation
- 8.4.3 Random excitation
- 8.4.4 Periodic excitation
- 9 Control of the excitation
- 9.1 General
- 9.2 Time required for sinusoidal excitation
- 9.2.1 General
- 9.2.2 Discretely dwelled sinusoidal excitation
- 9.2.3 Slowly swept sinusoidal excitation
- 9.3 Time required for random excitation
- 9.4 Dynamic range
- 9.4.1 General
- 9.4.2 Sinusoidal excitation
- 9.4.3 Random excitation
- 10 Tests for valid data
- 11 Modal parameter identification
- Annex A (normative) Tests for validity of measurement results
- Annex B (normative) Requirements for excitation frequency increments and duration
- Annex C (informative) Modal parameter identification
- Bibliography [Go to Page]