Thermal Evaluation of Headwear
Property:
Resistance to dry heat transfer (insulation value) and/or the evaporative resistance provided by headwear and helmet systems
Method:
There is no standard method for evaluating headwear; the basic procedures in the whole body manikin standards ASTM F 1291 and ASTM F 2370 will be followed
Instrument:
Thermal sweating head in an environmental chamber
Specimen number and size:
1 set of garments sized to fit the head
Cost for insulation tests:
$600 for 3 replications on one hat or helmet
Cost for evaporative resistance tests:
$800 for 3 replications on one hat or helmet
