HIC duration

[JamesMc]

Can anyone explain how the duration of a calculated HIC can be different from the HIC interval?

For example, I have HIC 36 with a calculated duration of only 7 ms in Diadem.  Why isn't the duration 36 ms?

Thanks

JamesMc

[Bernhard_G]

Hello JamesMc,

the HIC interval is the maximum time range in searching the greatest integral value of the HIC formula. The greatest integral value could be found in a smaller time range than the HIC interval, e.g. if the acceleration signal has one major peak. In that case the calculated HIC duration is smaller than the HIC interval.

Bernhard

[JamesMc]

Thanks Bernard.

I understood HIC 36 to be the maximum value of the integral over a period of 36 ms.  It's actually the maximum value of the integral over any period UP TO 36 ms.

JamesMc

[Otmar]

James,

Just as an FYI, there is a document in your X:\Program Files\National Instruments\DIAdem 10.1\Manuals folder that contains a lot of useful information about the DIAdem crash functions. I have attached the latest version of the document I have for your reference.

Otmar

[JamesMc]

Thanks Otmar

JamesMc