BS AU 228-1a:2000

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Performance requirements
    4.1 Linearity error
    4.2 Amplitude against frequency
    4.3 Phase delay time
    4.4 Time
    4.5 Transducer transverse sensitivity ratio
    4.6 Calibration
    4.7 Environmental effects
    4.8 Choice and designation of data channel
    4.9 Choice of reference coordinate system
    4.10 Impact velocity measurement
Annex A (informative) Butterworth four-pole phaseless
                        digital filter (including initial
                        conditions treatment) algorithm
Annex B (informative) Recommendations as to how the
                        requirements can be met
Bibliography

This International Standard presents recommendations and specifies requirements for instrumentation and measurement techniques used in impact tests. Aimed at facilitating comparisons between results obtained by different laboratories, which the recommendations given in annex B are designed to aid the laboratories to meet the requirements. Applicable instrumentation to this standard is specific to impact tests for road vehicles and includes that used in tests on sub-assemblies. Excluded from this International Standard are Optical methods which are subject to ISO 8721.