1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7684 Test Method for Determining the Flex Cracking Resistance of Coated Fabrics This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GME60377. !7$2 H 7(2e 4G - Note: 8 E:48t G8 =97 FF7
2、957%L+ , FG P-P Program .Bd# GME60377 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved November 2011 Originating Department: GM Korea Engineering Standards Page 1 of 5 Version : 3 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the
3、 event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose and Applicability. This test standard shall be used to determine the resistance of coated fabrics (leather cloths) to cracking of the coating layer when flexed. 2 References Note: Only
4、the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Test Piece. Test pieces (501) mm wide and (1001) mm long shall be cut from both longitudinal (war
5、p, wales) and transverse (weft, courses) direction of the test material. 5 such test pieces from each direction shall be tested. 3.2 Equipment. 3.2.1 Hose clips of suitable size to securely attach test pieces to the metal cylinders. 3.2.2 Apparatus for preconditioning. 3.2.3 Cutting dies or shears f
6、or preparation of test pieces. 3.2.4 Magnifying glass or stereo microscope 10X magnification. 1 P7 :0 : ., E:48 6 4*$# 9I%L6 $* ; 4*$# .$- 500G8 2$) -F8x &d( 7.) 7% 8x F 3L 8# 8/x Figure 1: Flex Cracking Test Machine ,* 1: H 7(2e 4G 8/x 4 Procedures 4.1 Conditions. 4.1.1 Test Conditions. Deviations
7、from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4 4G 92 2448 81 98=* F$ . 4.1.2.2 E: 4* 88F 4G 47 C-F 98=* 68 )= -O8t 1B72P 4G F$ . 4.2 4G - . 4G 8t 98=* G :4 +23 E 5K8 7$ F72P 44F+ , Gd4 8%L# 8t 2TBF7 4G :E 8/x8 :!? 7$ 138x 7) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 NOV 2011 Apply new Engineering Standard Template. Superceded (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 =* (G)8*4G D4 )
