Date:  June 13, 2003
Re: Soccer Head Bands – Pilot Impact Testing

 

Purpose:
 This report summarizes the results of preliminary testing to determine the impact
absorption performance characteristics of prototype head bands for soccer.
These head bands had varied in padding material (closed foam (cf) 803, 1000, 1200
at 1/8” thickness, and vinyl nitryl foam (vn) 600, 740, 1000 at ¼” thickness).

 

Method:
The independent measure of interest was peak G (i.e. impact deceleration).
The dependent variable of impact velocity and energy were held constant
at 1.9 m/s and 9.2 J, respectively.  An ISO headform (size L ~ medium adult)
with triaxial accelerometer (Kistler) mounted at the approximate center of mass
was dropped by means of a bi-rail basket guide (similar to CEN 960 for ice hockey)
from a height of 30 cm (see figure 1)

Figure 1.
 Drop Test Apparatus.  The headform was mounted to permit
impact between the mid anterior-crown locations.
Ten initial tests were conducted without any headbands mounted to provide baseline measures. Three impact per sample were conducted with approximately 30 seconds between impacts.  Only one sample per foam type were tested.
 

Figure 1

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