ISO 3795 R118a6
Laboratory
TESTING
OF THE HORIZONTAL COMBUSTION RATE OF INTRA-MOTOR VEHICLE MATERIALS
WITH A METHODS
ACCORDING TO PN
ISO 3795 AND APPENDIX
6 OF REGULATION NO. 118 EKG
Principle of the method.
The sample in the horizontal position is subjected to a low-energy
flame for 15 seconds. During the test, the burning time and the
length of the burnt portion shall be determined.
Stand
for determining the horizontal burning rate of interior motor vehicle
materials
Based
on the measured time achieve
through the forehead of the flame
control points, the rate of combustion is V burning speed horizontal, mm/min.
Note.
Only the horizontal burning rate is taken for the classification
assessment for cases where the flame has reached the last control
point or the end of the sample.
Test
samples.
At least five samples shall be taken from the test material.
Materials having different flammability levels in different
directions must be sampled by five (or more) samples in each
direction. When
the material is supplied in widths, a length of at least 500 mm shall
be cut covering the entire width. From this the samples shall be
taken so as to be at least 100 mm from the material edge and
equidistant from each other. Samples
shall be taken in the same way from finished products, when the shape
of the product permits. When the thickness of the product is more
than 13 mm, it shall be reduced to 13 mm by a mechanical process
applied to the side which does not face the respective compartment
(interior, engine or separate heating compartment). Composite
materials (see paragraph 6.1.3.) shall be tested as if they were of
uniform construction. In the case of materials made of superimposed
layers of different composition which are not composite materials,
all the layers of material included within a depth of 13 mm from the
surface facing towards the respective compartment shall be tested
individually.
Dimensions
of the test specimens.
- (356 ± 2) mm long
- (100 ± 2) mm wide
Applying
research methods – motor
vehicle (requirements according to Regulation
no. 118 EKG Appendix 6