ISO 6312 pdf download

ISO 6312 pdf download.Road vehicles — Brake linings — Shear test procedure for disc brake pad and drum brake shoe assemblies 1 Scope This International Standard specifies a method for measuring the strength of the bond connection between the lining material and the carrier in disc brake pad and drum brake shoe assemblies (shear strength). This International Standard is applicable to integrally moulded, riveted and bonded assemblies of both types of brake on road vehicles. 2 Normative reference The following normative document contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 61 1 , Roadvehicles — Braking ofautomotive vehicles andtheirtrailers — Vocabulary. 3 Terms and definitions For the purposes of this International Standard, the terms and definitions given in ISO 61 1 and the following apply. 3.1 lining friction material component of a brake lining assembly 3.2 carrier component of a brake lining assembly to which the friction pad is attached 3.3 bond area contact area between lining and carrier 3.4 shear strength ratio of the load at failure divided by the bond area 4 Symbols and units The symbols and preferred units used in this International Standard are given in Table 1 . 5 Sampling and conditioning This procedure may be used on samples during product development, on finished products, or after special treatment (such as that covered by ISO 631 4) or usage. Testing may be performed on a complete assembly or section of an assembly. Sample edges may be prepared to ensure good contact with the loading and fixed tools. Shims should be removed. When testing a lined shoe, the test area may cover the full assembly or segments of an assembly confined by saw cutting down to the carrier (see Figure 1 ). Five samples should be used. NOTE The test procedure applies a load in a direction which might not be in accordance with the loading direction of the product in service. The shear behaviour could be influenced by high aspect...