Description / Abstract:
This recommended practice outlines a series of performance
recommendations, which concern the whole data channel. These
recommendations are not subject to any variation and all of them
shall be adhered to by any agency conducting tests to this
practice. However, the method of demonstrating compliance with the
recommendations is flexible and can be adapted to suit the needs of
the particular equipment the agency is using.
It is not intended that each recommendation be taken in a
literal sense, as necessitating a single test to demonstrate that
the recommendation is met. Rather, it is intended that any agency
proposing to conduct tests to this practice shall be able to
demonstrate that if such a single test could be and were carried
out, then their equipment would meet the recommendations. This
demonstration shall be undertaken on the basis of reasonable
deductions from evidence in their possession, such as the results
of partial tests.
In some systems it may be necessary to divide the whole channel
into subsystems, for calibration and checking purposes. The
recommendations have been written only for the whole channel, as
this is the sole route by which subsystem performances affect the
quality of the output. If it is difficult to measure the whole
channel performance, which is usually the case, the test agency may
treat the channel as two or more convenient subsystems. The whole
channel performance could then be demonstrated on the basis of
subsystem results, together with a rationale for combining the
subsystem results together.
Part 1 of this recommended practice covers electronic
instrumentation and Part 2 covers photographic instrumentation.
PART 1 - ELECTRONIC INSTRUMENTATION
Purpose
The purpose of this SAE Recommended practice is to provide
guidelines and recommendations for the techniques of measurement
used in impact tests. The aim is to achieve uniformity in
instrumentation practice and in reporting test results. Use of this
recommended practice will provide a basis for meaningful
comparisons of test results from different sources.
Field of Application
The instrumentation as defined in this recommended practice
applies in particular to impact tests for road vehicles, including
tests of their sub-assemblies, and occupant surrogates.