ISO/NP TS 25466

Road vehicles — Retained strength test of glass used for a cover lens of automotive interior displays as an indicator of its performance in high impact tests

Scope

This document specifies a mechanical performance testing procedure for cover glass used in automotive display modules. The document focuses on the quantification of surface fracture stress after flaw introduction via Oscillating Taber abrasion similar to ASTM F735. After abrasion, the retained surface fracture load is measured with the method documented in ASTM C1499 and converted appropriately to failure stress. The failure stresses are plotted using a Weibull distribution for communication of strength statistics.

NOTE: The actual display product strength required to survive an impact test is largely dependent on the construction, supporting structure, its deformation while in use as installed into a vehicle. It is recommended to quantify stress in a glass cover lens component using commercially available FEA software to understand what stress a glass component may need to survive. The strength evaluation results obtained by the test procedure described in this document may not directly correlate to the durability of a final display product as installed in the cabin compartment.