1、 ENGINEERING STANDARDS Test Procedure LIMITED USE EDS-T-7637 Test Method for Determining the Stiffness of Sound Deadener Pads Do Not Use on New Program; No Replacement. -8D particularly those used in the engine compartment of automobiles. It should be particularly noted that excessively stiff pads c
2、an give rise to assembly problems whilst excessively flexible pads may not be adequately retained during service. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. BS 2468 DIN 51221 2.2 GM Standards/Specifications.
3、 EDS-T-7507 EDS-T-7624 2.3 Additional References. None 3 Resources 3.1 Test Piece. 3.1.1 Size of Test Pieces. Test pieces (1505) mm (501) mm thickness shall be so sampled as to be, as far as possible, of uniform thickness, and free from voids, protrusions, cut holes, etc. and edges shall be as near
4、perpendicular to the face as possible. The area of sampling may be indicated on relevant drawings or material specifications. 1 P7 :0 : ., E:48 68p) 7X$) F7 -h& :$4 887 “#$ . 4.2.4 4G D8 -h& :$4 187 (1001) mm/min 8 89IF 2$) -,!x) :+2P .H -GI%T 3L 8$) -h&8x 87F7 4G D7 F:E8x 4F$ . 4.2.5 8) F -GI8x :0#
5、 Fx7F $4H8x d)F$ . 4.2.6 7:*,7 17%P -8D& 878 8:$ % 8F -8p) 4G F 3L 88p+ ,7 &d* 4G D0 4G :,# $+8! 8: &%7 -$) 9IF 3L 8$ . 5 4G $8Bd 5.1 D4 . 5.1.1 ?U9IF 38 % :E 48 88t F8x 4G D8 % ) ?F7 6x(8 47 &d( :2e8x F$ . :2e (N cm )= $4 F:E (N)4G D8 % (mm)10 5.1.2 4G D8 6x( +8 7(8 -P2%L: 66x6 F$ . 5.2 0 E4 . 4G
6、7 $4F =l9,l0 F +& 4G 08 13TD F8x N/cm 8 $88) 1 N/cm: d)F$ . GM KOREA ENGINEERING STANDARDS EDS-T-7637 Copyright 2012 General Motors Company All Rights Reserved April 2011 Page 4 of 4 Version : 4 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does no
7、t propose to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Stiffness: It shall be define
8、d as the bending force per unit thickness, required to deflect a standard test piece through a standard deflection, during three point bending. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows:
9、6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/x &%8x E FF 3L 8$ . ., E:48t 87 $4F 170 4)%P +& 6|98 ,l9P8 F8x 9P4F:# 6#$ . &d(2P 17 987 95FF 6|980 I 1B* 9DF , -18 9PF 728 957 7 .* 9IF# 8t ., E:4 1788 =y8 1F8$ . 7 768 9I8 7.1 98,l 76 . :2e : 39D -h& (Three Point Bending)8p) 4G D8x 7x98H .*#$ Fx7F $88 % $-
10、 H8x +F$ (Bending Force). 7.2 66 -C dGl . F$-1F 68 . 8 Ed - $* ,l2P! $+ &%72P ., E:48 87%T &# $80 M8 EdF$ . English Stiffness to EDS-T-7637 - (155) N/cm Requirements Test Method Designation ,l :2e to EDS-T-7637 - (155) N/cm 7 9 4G - 4G F+ 9 Release and Revisions This standard was originated in July
11、1993. It was first approved by Engineering Standard Committee in July 1993. It was first published in July 1993. 9 9P9I -C P9I 8)Y ., E:48t 1993 “x 7 87 E:4 -Gl4 .7 %L6 , d3TE:41,h7 8F 1993“x 787 38%L6$ . ., E:48t 1993“x 787 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 APR 2012 Apply new Engineering Standard Template. Limited use with no replacement (ME Paint M&F Engineering team) / 4 d3TE:4 64 957 . F9I957 ($4=E:4 68 ) =* ($8d3TP-PD4 )
