[Code of Federal Regulations]
[Title 49, Volume 6]
[Revised as of October 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR572.76]

[Page 944-945]
 
                        TITLE 49--TRANSPORTATION
 
                   CHAPTER V--NATIONAL HIGHWAY TRAFFIC
                    SAFETY ADMINISTRATION, DEPARTMENT
                            OF TRANSPORTATION
 
PART 572_ANTHROPOMORPHIC TEST DEVICES--Table of Contents
 
                       Subpart I_6-Year-Old Child
 
Sec.  572.76  Limbs assembly and test procedure.

    (a) Limbs assembly. The limbs consist of the assemblies designated 
as SA 106C 041, SA 106C 042, SA 106C 071, and SA 106C 072, on drawing 
No. SA 106C 001, sheet 2, and conform to each applicable drawing listed 
on SA 106C 001, sheets 14 through 17.
    (b) Limbs assembly impact response requirement. When each knee is 
impacted at 7.0 0.1 fps, according to paragraph 
(c) of this section, the maximum force on the femur shall not be more 
than 1060 pounds and not less than 780 pounds, with a duration above 400 
pounds of not less than 0.8 milliseconds.
    (c) Limbs test procedure. The test procedure for the limbs is as 
follows:
    (1) Seat and orient the dummy without back support on a seating 
surface that is 11 0.2 inches above a horizontal 
(floor) surface as specified in Sec.  572.78(c).
    (i) Orient the dummy as specified in Figure 43 with the hip joint 
adjustment at any setting between 1g and 2g.
    (ii) Place the dummy legs in a plane parallel to the dummy's 
midsagittal plane with the knee pivot center line perpendicular to the 
dummy's midsagittal plane, and with the feet flat on the horizontal 
(floor) surface.
    (iii) Adjust the feet and lower legs until the line between the 
midpoint of

[[Page 945]]

each knee pivot and each ankle pivot is within 2 degrees of the 
vertical.
    (2) If necessary, reposition the dummy so that at the level one inch 
below the seating surface, the rearmost point of the dummy's lower legs 
remains not less than 3 inches and not more than 6 inches forward of the 
forward edge of the seat.
    (3) Align the test probe specified in Sec.  572.77(a) with the 
longitudinal center line of the femur force gauge, so that at impact, 
the probe's longitudinal center line coincides with the sensor's 
longitudinal center line within 2 degrees.
    (4) Impact the knee with the test probe moving horizontally and 
parallel to the midsagittal plane at the specified velocity.
    (5) Guide the test probe during impact so that there is no 
significant lateral, vertical, or rotational movement.