BMW GS 97034-2 Surface Test of Motor Vehicle Interiors - Finger Nail Test

In the BMW GS 97034-2 standard, developed by the BMW automobile company, a multinational vehicle manufacturer company headquartered in Germany, the finger nail test method using a plastic test piece is defined. This standard applies to painted, coated, uncoated and laminated surface materials. The described test method is applied to determine the resistance of the surface materials in the passenger compartment to damage caused by finger nails. The purpose of this standard is to provide a standardized test method for the suitability of vehicle interior upholstery materials.

In these tests, a test device controlled by a programmable logic controller (PLC) is used to conduct scratch resistance tests on lacquer and plastic surfaces. The following test modes are implemented in these devices:

• Line drawing (single linear motion) (length and speed controlled)
• Friction (repetitive linear movements in the same place (length, speed and number are controlled)
• Matrix (lattice linear motion) (control x length, y length, mesh size and speed)
• Circuit (single circular motion) (circle diameter and path speed controlled)

A vehicle's interior upholstery is made of different materials, such as leather, plastic, metal, textiles and sometimes even wood-effect laminate. In general, various paints, varnishes and coatings are applied to the base of the flooring material to protect the surface with a matte or glossy smooth surface. These flooring components are often used on instrument clusters, air vents and door panels, which are areas that experience a lot of wear and tear during their lifetime. Given the importance of appearance for interior components, whether paint or coating, it is important that the top layer adheres properly to the substrate and achieves a uniform smoothness and does not easily separate from the substrate when scratched, abraded or marked. Therefore, various tests are applied to determine the performance level of the component.

Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization includes finger nail testing services to determine the surface resistance of motor vehicle interior materials, within the scope of BMW GS 97034-2 standard, with its trained and expert staff and advanced technological equipment. gives.