The stone chip test using a multi-impact test according to DIN EN ISO 20567-1 is a standardized test procedure and is used, for example, to simulate stone chip damage to the vehicle. This test is required by various vehicle manufacturer standards. Common standards are DIN EN ISO 20567-1, FORD FLTM BI 157-06, RENAULT D24 1702, PSA D24 1312, etc.
In the automotive sector, we test the stone chip resistance for our customers, for example on underbody applications, floor coverings, shielding, damping trays, engine shielding capsules as well as painted and coated plastics or metals.
In the Erichsen Multi-Grit Tester, test specimens are bombarded with sharp-edged impact bodies (e.g. standardized chilled cast iron granulate) in rapid succession.
The influencing factors can be varied according to the standard or customer-specific specifications. These include the material being fired, pressure and firing time, and angle of impact. The parameters regulated in ISO 20567-1 usually apply to ensure comparability of the multi-impact test.
The stone chip resistance is determined by the degree of damage. This is compared with reference images and assigned a corresponding characteristic value.
Standards: 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
