FMVSS 302 is one of the most important to crash survivability. This standard not only designates acceptable flammability characteristics of materials to be used in vehicle interiors but also outlines specifications for testing these properties and interpreting their results. By comparing their findings against the desired burn characteristics, auto manufacturers and parts suppliers can ensure their interior materials are approved for use.
Test instruments :Horizontal Flammability Tester;
Test Procedure of Horizontal Flame Tester：
a.Mount the specimen so that both sides and one end are held by the U-shaped frame, and one end is even with the open end of the frame. Where the maximum available width of a specimen is not more than 51 mm, so that the sides of the specimen cannot be held in the U-shaped frame, place the specimen in position on wire supports as described in S5.1.3, with one end held by the closed end of the U-shaped frame.
b.Place the mounted specimen in a horizontal position, in the center of the cabinet.
c.With the flame adjusted according to S5.1.4, position the bunsen burner and specimen so that the center of the burner tip is 19 mm below the center of the bottom edge of the open end of the specimen.
d.Expose the specimen to the flame for 15 seconds.
e.Begin timing (without reference to the period of application of the burner flame) when the flame from the burning specimen reaches a point 38 mm from the open end of the specimen.
f.Measure the time that it takes the flame to progress to a point 38 mm from the clamped end of the specimen. If the flame does not reach the specified end point, time its progress to the point where flaming stops.
g.Calculate the burn rate from the formula: B = 60 × (D/T)
Where:
B = Burn rate in millimeters per minute
D = Length the flame travels in millimeters, and
T = Time in seconds for the flame to travel D millimeters.
For more information about our testing instrument, please contact
·website:http://www.qinsun-lab.com/
· Phone :+86-21-6780 0179
· E-mail :info@qinsun-lab.com
Test instruments :Horizontal Flammability Tester;
Test Procedure of Horizontal Flame Tester：
a.Mount the specimen so that both sides and one end are held by the U-shaped frame, and one end is even with the open end of the frame. Where the maximum available width of a specimen is not more than 51 mm, so that the sides of the specimen cannot be held in the U-shaped frame, place the specimen in position on wire supports as described in S5.1.3, with one end held by the closed end of the U-shaped frame.
b.Place the mounted specimen in a horizontal position, in the center of the cabinet.
c.With the flame adjusted according to S5.1.4, position the bunsen burner and specimen so that the center of the burner tip is 19 mm below the center of the bottom edge of the open end of the specimen.
d.Expose the specimen to the flame for 15 seconds.
e.Begin timing (without reference to the period of application of the burner flame) when the flame from the burning specimen reaches a point 38 mm from the open end of the specimen.
f.Measure the time that it takes the flame to progress to a point 38 mm from the clamped end of the specimen. If the flame does not reach the specified end point, time its progress to the point where flaming stops.
g.Calculate the burn rate from the formula: B = 60 × (D/T)
Where:
B = Burn rate in millimeters per minute
D = Length the flame travels in millimeters, and
T = Time in seconds for the flame to travel D millimeters.
For more information about our testing instrument, please contact
·website:http://www.qinsun-lab.com/
· Phone :+86-21-6780 0179
· E-mail :info@qinsun-lab.com
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