Road vehicles, and tractors and machinery for agriculture and forestry - Determination of burning behaviour of interior materials
Material
Our test laboratory performs testing in accordance with ISO 3795 using an accredited procedure. This standard specifies a standardized test method for determining the burning behavior of materials used in the passenger compartment of vehicles, in particular the horizontal burning rate of non-metallic materials. The aim of the test is to evaluate the flame propagation characteristics of materials and thus their contribution to fire behavior in the vehicle interior.
The test is applicable to a wide range of materials used in vehicle interiors, such as plastics, textiles, leather, coated materials, foams, and composites. It is internationally used for flammability assessment and is functionally comparable to automotive requirements such as FMVSS 302.
During testing according to ISO 3795, standardized rectangular specimens are conditioned under defined climatic conditions and then mounted horizontally in a U-shaped holder within a test chamber. A defined test flame is applied to the free end of the specimen for a specified period (typically 15 seconds). After removal of the ignition source, the flame spread along the specimen is observed over a defined distance and recorded over time.
The linear burning rate (mm/min) is calculated from the burned distance and the time required. In addition, it is assessed whether the material self-extinguishes or continues to burn. Materials meet the requirements if the burning rate is below specified limits or if early self-extinguishing occurs.