020-9905 User Manual Q3 (Advanced 3 year old child) Rev G Page 79 of 82
© 2016 Humanetics Innovative Solutions
Frontal Impact Thorax Test
Instrumentation
The dummy must be equipped with the standard IR-TRACC to measure frontal chest
deflection. Use the 3.80 Kg test probe as described in section 7.2, equipped with an
accelerometer to measure the impact deceleration. The impact velocity must be measured
and recorded. This can be done with the speed vane on the test probe. Ensure hip insert
or APTS abdomen are not fitted.
Test Procedure
1.
Dummy positioning
The dummy should be seated on a clean dry surface, consisting of two 0.60 x
0.65 m flat plates of 2 mm Teflon sheeting.
Place the dummy with its thoracic spine in a vertical orientation, within ±1 degree
with the vertical. To stabilize the sitting position of the dummy rotate the upper
legs outwards (toes point outwards), and place the legs in a v-shape. The angle
between the feet should be between 40 and 60 degrees.
Make sure the dummy is motionless.
Place the upper arms vertically alongside the body, and let the lower arms rotate
downward to let the hands touch the seating surface.
2.
Impactor alignment
Let the impactor hang in its lowest position. Check that the probe is in a
horizontal position, that is, within ± 2 degrees.
The impactor front surface should be directly in front of the dummy sternum
within 5 mm.
The height of the centre line of the impactor over the seating surface should be
chosen in such a way, that the centre line of the impactor aligns with the sternum
halfway between the upper and lower edge of the rib. This aligns the impactor
with the IR-TRACC attachment point on the rib cage.
The centre line of the Impactor should be in the mid-sagittal plane.
3.
Measure and record the impact velocity with the speed vane on the probe.
4.
The minimum time interval to observe between tests on the thorax is 30 minutes.
Data Processing
1.
All data channels should be filtered at CFC600.
2.
Set time zero at the 1 g deceleration level in the Impactor signal (after filtering with
CFC600 software filter).