Name: Felt Cover
Material: wool felt
Radius: 95 mm
Thickness: 5 mm
Function:Used for the head-form weight to assess the minimumstrength and cohesion of the safety glass under impact from a blunt, bulkyobject.
GSO ISO 3537 Road vehicles Safety glazingmaterials Mechanical tests Clause 8 Head-form test
ECE-R43-01 Uniform provisions concerningthe approval of safety glazing materials and their installation on vehicles Annex3 General test conditions Clause3 Headform test
Head-form weight, with a spherical orsemi-spherical head made of laminated hard wood covered with replaceable feltand with or without a cross-beam made of wood. Between the spherical part andthe cross-beam, there is a neck-shaped intermediate piece and on the other sideof the cross-beam, a mounting rod . The total mass of the apparatus shall be(10 + 0.2) kg.
The impact surface of the felt cover shallbe replaced after twelve tests.