[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: 49CFR572.6]

[Page 759]
 
                        TITLE 49--TRANSPORTATION
 
                            OF TRANSPORTATION
 
PART 572--ANTHROPOMORPHIC TEST DEVICES--Table of Contents
 
                     Subpart B--50th Percentile Male
 
Sec. 572.6  Head.

    (a) The head consists of the assembly shown as number SA 150 M010 in 
Figure 1 and conforms to each of the drawings subtended by number SA 150 
M010.
    (b) When the head is dropped from a height of 10 inches in 
accordance with paragraph (c) of this section, the peak resultant 
accelerations at the location of the accelerometers mounted in the head 
form in accordance with Sec. 572.11(b) shall be not less than 210g, and 
not more than 260g. The acceleration/time curve for the test shall be 
unimodal and shall lie at or above the 100g level for an interval not 
less than 0.9 milliseconds and not more than 1.5 milliseconds. The 
lateral acceleration vector shall not exceed 10g.
    (c) Test procedure:
    (1) Suspend the head as shown in Figure 2, so that the lowest point 
on the forehead is 0.5 inches below the lowest point on the dummy's nose 
when the midsagittal plane is vertical.
    (2) Drop the head from the specified height by means that ensures 
instant release onto a rigidly supported flat horizontal steel plate, 2 
inches thick and 2 feet square, which has a clean, dry surface and any 
microfinish of not less than 8 microinches (rms) and not more than 80 
microinches (rms).
    (3) Allow a time period of at least 2 hours between successive tests 
on the same head.

[38 FR 20451, Aug. 1, 1973, as amended at 42 FR 7152, Feb. 7, 1977]