Detail of GA 844-2018

Introduction of GA 844-2018

GA 844-2018 Forced entry resistant transparent material 1 Scope This standard specifies the classification, grading and designation, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of forced entry resistant transparent materials. This standard is applicable to the design, manufacture and inspection of transparent plates such as forced entry resistant composite glass with forced entry resistance requirements. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 5137.2-2002 Test methods of safety glazing materials used on road vehicles - Part 2: Optical properties tests 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 forced entry resistant transparent material plates with forced entry resistance and light transmittance meeting certain requirements 3.2 strike face surface of forced entry resistant transparent material first contacts the impact tool 4 Classification, grading and designation 4.1 Classification After the impact test of the forced entry resistant transparent material sample, the product is classified as follows according to the state after the test: a) Basic protection (Type P protection): cracks, openings or debris flaking on the back of the forced entry resistant transparent material is allowed, but it cannot cause a penetrating hole; b) Full protection (Type S protection): the back surface of the forced entry resistant transparent material is smooth, no cracks or openings, and no debris flaking. 4.2 Forced entry resistance grading Forced entry resistant transparent materials are classified according to the forced entry resistance, and the grading of forced entry resistance is shown in Table 1.

Contents of GA 844-2018

Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Classification, grading and designation 5 Technical requirements 6 Test methods 7 Inspection rules 8 Marking, packaging, transportation and storage Annex A (Normative) Forced entry resistance test method