ISO 12947.2 pdf download

ISO 12947.2 pdf download.Textiles – Determination of the abrasion resistance of fabrics by the Martindale method – Part 2: Determination of specimen breakdown 1 Scope This part of ISO 12947 is applicable to the determination of the inspection interval to breakdown of specimens covering all textile fabrics including nonwovens apart from fabrics where the specifier indicates the end performance as having a low abrasion wear life. NOTE Further introductory comments are given in Part 1 of this International Standard. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 12947. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 12947 are encouraged to investigate the possibility of applying the most recent editions of the normative documents 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 105-A02:1993, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour. ISO 139:1973, Textiles — Standard atmospheres for conditioning and testing. ISO 2859-1:—, Sampling procedures for inspection by attributes — Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection 1) . ISO 12947-1:1998, Textiles — Determination of the abrasion resistance of fabrics by the Martindale method — Part 1: Martindale abrasion testing apparatus. 3 Definitions For the purposes of this part of ISO 12947 the definitions given in ISO 12947-1, as well as the following apply. 3.1 thread textile yarn, either single or resulting from twisting together two or more single or folded yarns 3.2 specimen breakdown breakdown point which is reached: — in woven fabrics, when two separate threads are completely broken; — in knitted fabrics, when one thread is broken causing a hole to appear; — in pile fabrics, when the pile is fully worn off; — in nonwovens, when the first hole resulting from the wear is of a diameter at least equal to 0,5 mm. 4 Principle A circular specimen, mounted in a specimen holder and subjected to a defined load, is rubbed against an abrasive medium (standard fabric) in a translational movement tracing a Lissajous figure, the specimen holder being additionally freely rotatable around its own axis perpendicular to the plane of...