AS NZS 3629.1:2010 pdf free download – Methods of testing child restraints Method 1: Dynamic testing

AS NZS 3629.1:2010 pdf free download – Methods of testing child restraints Method 1: Dynamic testing.
6 PRINCIPLE
The child restraint system is subjected to a series of dynamic forces to cause nominated decelerations of a test rig to simulate frontal, rearward, sideways, and inverted vehicle impacts.
7 APPARATUS
The following apparatus is required:
(a) A test rig of mass not less than 380 kg. consisting of a trolley, a test seat conforming to Figure I, and a structure for providing scatbelt anchorages.
(b) A series of test dummies as specified in ASINZS 1754.
(c) A means of measuring deceleration of the test rig for calibration purposes. Instrumentation shall comply with the requirements of SAE i21 I for Channel Frequency Class 60.
(d) Where required. pressure-sensitive paper fixed in place over the genital region of the dumiu.
(e) A probe, to measure the force required to operate the quick-release device actuator to an accuracy of ±1 N. The end of the probe shall have a 7 ±0.5 mm radius hemispherical surface.
(C) Self-adjusting slings for attachment to the dummy’s wrists and ankles as shown in Figure 2.
(g) Where required. a means of detecting chest cross strap contact ith the throat of the test dummy.
(h) A means of applying a force of 200 N to the dummy through the self-adjusting slings referred to in Item (C).
(i) A means of measuring the force referred to in Item (h) to an accuracy of±l N.
(j) Where required, a break-away retention system for the dummy’s head that will ensure that light head contact is maintained with the child restraint during the run-down to impact.
(k) Where required. a means of measuring the head deceleration. Instrumentation shall comply with the requirements of SAF J2I I for Channel Frequency Class 1000. The location of accelerometers shall be according to the manual supplied by TNO with the test dummies (see AS/NZS 1754).
NOTE: A iriaxial accelerometer is considered to be the minimum required.
(I) Where required, a door structure as specified in Figure 6 used in conjunctioll with the test seat specified in Figure 1.
This Appendix sets out a procedure for calibrating the test rig.
A2 PROCEDURE
The child restraint and dummy shall be replaced by a solid balast iiiass, equal to their combined mass, which shall he rigidly attached to the sled. The test rig shall then he set to produce the following decelerations as appropriate to the mode of testing:
(a) Fronial When subject to a velocity change of not less than 49 km/li. a deceleration of between 24g and 34g shall be achieved within 30 ins. The deceleration shall remain within the range 24g to 34g for not less than 20 ms.
NOTE: Deceleration values outside this range that occur for periods of not greater than I ms may be disregarded.
(b) Side and rear impacis When subject to a velocity change of not less than 32 km/h. a deceleration of betseen 14g and 20g shall be achieved within 30 ms. The deceleration shall remain within the range 14g to 20g for not less than 20 ins.
NOTE: Deceleration values outside this range that occur for periods of not greater than I ms may be disregarded.
The testing rig shall he calibrated with the door structure as specified in Figure 6.
(c) Inveried When subject to a velocity change of not less than 16 km/h. a deceleration of between 8g and lSg shall be achieved within 30 nis. The deceleration shall remain within the range 8g and I 5g for not less thaii 20 ins.
NOTE: Deceleration values outside this range that occur for periods of not greater than I ms may he disregarded.