[Code of Federal Regulations]
[Title 49, Volume 5]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR572.16]

[Page 770-771]
 
                        TITLE 49--TRANSPORTATION
 
                            OF TRANSPORTATION
 
PART 572--ANTHROPOMORPHIC TEST DEVICES--Table of Contents
 
                       Subpart C--3-Year-Old Child
 
Sec. 572.16  Head.

    (a) The head consists of the assembly designated as SA 103C 010 on 
drawing No. SA 103C 001, and conforms to either--
    (1) Each item specified on drawing SA 103C 002(B), sheet 8; or
    (2) Each item specified on drawing SA 103C 002, sheet 8.
    (b) When the head is impacted by a test probe specified in 
Sec. 572.21(a)(1) at 7 fps, then the peak resultant acceleration 
measured at the location of the accelerometer mounted in the headform 
according to Sec. 572.21(b) is not less than 95g and not more than 118g.
    (1) The recorded acceleration-time curve for this test is unimodal 
at or above the 50g level, and lies at or above that level for 
intervals:
    (i) In the case of the head assembly specified in paragraph (a)(1) 
of this section, not less than 1.3 milliseconds and not more than 2.0 
milliseconds;
    (ii) In the case of the head assembly specified in paragraph (a)(2) 
of this section, not less than 2.0 milliseconds and not more than 3.0 
milliseconds.
    (2) The lateral acceleration vector does not exceed 7g.
    (c) Test procedure. (1) Seat the dummy on a seating surface having a 
back support as specified in Sec. 572.21(h) and orient the dummy in 
accordance with Sec. 572.21(h) and adjust the joints of the limbs at any 
setting between 1g and 2g, which just supports the limbs' weight when 
the limbs are extended horizontally forward.

[[Page 771]]

    (2) Adjust the test probe so that its longitudinal centerline is at 
the forehead at the point of orthogonal intersection of the head 
midsagittal plane and the transverse plane which is perpendicular to the 
``Z'' axis of the head (longitudinal centerline of the skull anchor) and 
is located 0.6  0.1 inches above the centers of the head 
center of gravity reference pins and coincides within 2 degrees with the 
line made by the intersection of horizontal and midsagittal planes 
passing through this point.
    (3) Adjust the dummy so that the surface area on the forehead 
immediately adjacent to the projected longitudinal centerline of the 
test probe is vertical.
    (4) Impact the head with the test probe so that at the moment of 
impact the probe's longitudinal centerline falls within 2 degrees of a 
horizontal line in the dummy's midsagittal plane.
    (5) Guide the probe during impact so that it moves with no 
significant lateral, vertical, or rotational movement.
    (6) Allow a time period of at least 20 minutes between successive 
tests of the head.

[44 FR 76530, Dec. 27, 1979; 45 FR 43353, June 26, 1980, as amended at 
45 FR 82267, Dec. 15, 1980; 55 FR 30468, July 26, 1990]