ISO/AWI TS 25773

Road vehicles — Safety Glazing — Strength testing of glass used for automotive interior display cover lenses

Scope

This document specifies/describes test methods and procedures to evaluate the cover lens component used to protect the display surface by characterizing the strength of the cover lens, taking into account two of the major sources of breakage:
• surface strength
• edge strength

The test results are limited to evaluating the strength as a component, of the cover lens alone. The strength evaluation of a fully assembled display within the vehicle cabin is out of scope of this document. This is because the overall strength an assembled display cover lens may depend on multiple variables and components of the display system. The structural features supporting the cover lens and installation into the vehicle cabin are very influential and dependent on each vehicle design. This document does not cover the evaluation of strength of finished display product and is therefore not suitable to be uniquely used as proxy to quantify the display susceptibility to impact test.

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. 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.

Cover lens components are exposed to manufacturer-specific production processing damage, which may create surface flaws impacting strength. Thus, informative material is provided in a supplementary annex for convenience.