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An Aid for the Assessment of Biomechanical Values With High Scatter and Uncertain Limit Values
Technical Paper
856073
Sector:
Language:
English
Abstract
In the case of characteristic quantities with an unusually high
scatter and remarkably high uncertainties in establishing limit
values, it is often very problematic to determine a particular
value as the development target. This value must keep a defined
safety margin to a limit value that is probably set down by
regulations. But often a certain safety margin to the requirements
of reality has already been observed when establishing limit
values. In the case of the values referred to here, this double
safety might-on the one hand- lead to development targets that are
technically not feasible or only at unacceptable expenditure. On
the other hand, this might compel actual safety reserves that no
sensible person would ever demand.
For this reason, the example of HIC, the head injury criterion,
is used to demonstrate the possibility of finding development
targets and limits for specifications and regulations without being
forced to keep unrealistic safety margins. It becomes obvious that
in the example of HIC, a limit of 1,500 is much more realistic
than, for example, a limit of 1,000.