Document ID: chunk:federal_register_of_legislation:F2015L02109:body:0:p33
Version: federal_register_of_legislation:F2015L02109
Segment Type: other
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Character Range: 95305–98317

Annex 9

Pitch and roll angle references
Figure 9-1
Example of a linear reference connecting two reference points on a left door sill
Figure 9-2
Example of a linear reference connecting two reference points on a rear body

Annex 10

Determination of WorldSID 50th percentile adult male performance criteria

                1.  Head Injury Criterion (HIC)
                    1.                           The Head Injury Criterion (HIC) 36 is the maximum value calculated from the expression:
Where:
aR = the resultant translational acceleration at the centre of gravity of the dummy head recorded versus time in units of gravity, g (1 g = 9.81 m/s2); and
t1 and t2 are any two points in time during the impact which are separated by not more than a 36 millisecond time interval and where t1 is less than t2.
1.2.                              The resultant acceleration at the centre of gravity of the dummy head is calculated from the expression:
Where:
aX = the longitudinal (x-axis) acceleration at the centre of gravity of the dummy head recorded versus time and filtered at a channel frequency class (CFC)[16] of 1,000 Hz;
aY = the lateral (y-axis) acceleration at the centre of gravity of the dummy head recorded versus time and filtered at a CFC of 1,000 Hz; and
aZ = the vertical (z-axis) acceleration at the centre of gravity of the dummy head recorded versus time and filtered at a CFC of 1,000 Hz.

2.                                   Shoulder performance criteria
2.1.                              The peak lateral (y-axis) shoulder force is the maximum lateral force measured by the load cell mounted between the shoulder clevis assembly and the shoulder rib doubler and filtered at a CFC of 600 Hz.

3.                                   Thorax performance criteria
3.1.                              The maximum thorax rib deflection is the maximum deflection of any (upper, middle or lower) thorax rib, as determined from the voltage output measurements recorded by the deflection sensor mounted between the rib accelerometer mounting bracket and central spine box mounting bracket inside each struck-side thorax rib, and filtered at a CFC of 600 Hz.

4.                                   Abdominal performance criteria
4.1.                              The maximum abdominal rib deflection is the maximum deflection of any (upper or lower) abdominal rib, as determined from the voltage output measurements recorded by the deflection sensor mounted between the rib accelerometer mounting bracket and central spine box mounting bracket inside each struck-side abdominal rib, and filtered at a CFC of 600 Hz.
4.2.                              The value of the resultant lower spine (T12) acceleration (aR) which is exceeded for 3 milliseconds cumulatively (i.e. across one or more peaks) is calculated from the expression:
Where:
aX = the longitudinal (x-axis) acceleration of the dummy lower spine recorded versus time and filtered at a CFC of 180 Hz;
aY = the lateral (y-axis) acceleration of the