The stone chip testing using multi-impact testing according to DIN EN ISO 20567-1 is a standardized procedure for simulating stone chip damage on vehicles and is required in numerous manufacturer standards, including DIN EN ISO 20567-1, FORD FLTM BI 157-06, RENAULT D24 1702 and PSA D24 1312.
In the automotive sector, we use this test to determine the stone chip resistance of various components. Typical areas of application are underbody applications, floor coverings, shielding, damping trays, engine shielding capsules, and painted and coated plastics or metals.
For testing, we use the Erichsen Multi-Grit Tester, which bombards the test specimens with sharp-edged impact bodies, such as standardized chilled cast granulate, in rapid succession.
Test conditions such as firing material, pressure, firing time and impact angle can be adapted either according to the standard specifications or according to specific customer requirements. To ensure uniform comparability of the results, the parameters specified in ISO 20567-1 are often used.
The stone chip resistance is assessed based on the degree of damage. The damage is compared with reference images and assigned a specific value.
Norms: DIN EN ISO 20567-1, FORD FLTM BI 157-06, RENAULT D24 1702, PSA D24 1312, DBS 918 127: 2020-04 (Deutsche Bahn standard), SAE J400: 2012, ISO 15003: 2006, PACCAR CS0074: 2014
