1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7414 Determination of the Compressibility of a Cellular Elastomer Under a Specified force This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW14293. 89IF:E72P8 -PE ,h8 62e 4G - Note
2、: 8 E:48t G8 =97 FF7 957%L+ , FG P-P Program .Bd# GMW14293 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved November 2011 Originating Department: GM Korea Engineering Standards Page 1 of 4 Version : 5 1 Scope Note: Nothing in this standard supersedes applicable laws and regu
3、lations. Note: In the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. The purpose of this standard is to determine of the compressibility of a cellular elastomer, used in a seal or shock absorber, under a specified force. 1.2 Applica
4、bility. The compressibility of a cellular elastomer under a given force acting in a specified direction shall be the distance by which the test piece is deflected in that direction. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standard
5、s/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 Testing Machine. 3.1.1.1 The test machine shall be so constructed that the test piece may be compressed between its support and pressure foot, and shall be capable of control
6、ling the compressing velocity at a given level. 1 P7 :0 : ., E:48 6&F !7$ :4-8! 9I8x $4=F 3L 6$ . :0 : F67t 7568 18 88x 7 , F6* 72T8p) F$ . 1.1 +95 . ., E:48t 6d (Sealing) D# 31630-H &%7 17%L# -PE 2e (Cellular) ,h8 62e8x (89IF:E72P ) 9IF# 4G -7 $4F 8$ . 1.2 957 -88 . 89IF:E72P8 -PE ,h8 62e8t 4D8 -GI
7、 -F0 4F:# -F8 % 8F+ , 4F: F:E7 $4F 6-88) E4F 3L 8$ . 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . None 2.2 GM E:4 / . None 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x . 3.1.1 4G 8/x . 3.1.1.1 6 8?# 6 :,7t 4D 9I$4 1872P 4G D8 6%T 3L 866 F+ 62$* 89IF 994 7:8 -88# 0.1 mm 9I$: ?U
8、9I8 4#F6 F$ . 3.1.2 6 :, . 3.1.2.1 Type A. : 60 mm8 8GI :, . 3.1.2.2 Type B. F -8 100 mm8 9I15GI :, . 3.1.3 4D -O?$4 . 4D -O?$4# 6:,7 $4F2P 3LDF DDF6 F+ , 4D -O?$47# + :E4 8 *4 20 mm 9I$%L# : 6 mm 9I$8 )d -hC +8 866 F$ . 3.2 4G D . 3.2.1 4G D8t 7x9PE8! , D# 4) .E $+7 :9I%P 4D866 F$ . 3.2.2 4G D8 l8#
9、 2F 6 :, (Pressure Foot).($ 6 F$ . 3.2.3 2 2 P8 9PE72P 3P 818 4G D8x =x?F7 4G F6 F+ , 8-L958 E:4*4 +958 7# 4#F 1P 818 9PE72P 2 1P8 4G D8x =x?F7 4G F$ . 4 4G 92 388 0F $8 4G F$ . DF 4G 98 4D8t 23 E 5K 72P 956$ 848 % 6| 7.8 8 )Y8 6# 1B) -?F6 F$ . 4.2 4G - . 4.2.1 4G 8t 23 E 5K72P 3LFF$ 4.2.2 4G D7 (20
10、.1) N 8 F:E8 4F:$) 6 :,* 4D-O?$47 4. .8 , 81B) 6 :,7t 4D -O?$4 188 * 0 8p) 2D9F 6 :,7t 4D -O?$4* 95$-F *) 2P) (x7$ . 4.2.3 4G D8x 4) .E$+8 :9I%P -F8p) F:E8 4F:$) 4D-O?$48 9I :E67 “#$ . GM KOREA ENGINEERING STANDARDS EDS-T-7414 Copyright 2011 General Motors Company All Rights Reserved November 2011 P
11、age 3 of 4 Version : 5 4.2.4 The pressure foot shall be gently lowered so as to contact the test piece under a force of (20.1) N. The pressure foot shall be gently lowered so as to contact the test piece support under a force of 0.5 1 N and the height of the test piece determined to the nearest 0.1
12、mm (h0). 4.2.5 The force is increased by (180.9) N (giving a total force of (201.0) N by means of pressure foot. Alternative loads may be used if specified on the relevant part drawing. 4.2.6 The total force shall be applied for a period of (100.2) seconds, and then while the force is still applied,
13、 the height of the test piece is determined to the nearest 0.1 mm (h1). 4.2.7 Testing speed shall be 12 mm/minute. 5 Data 5.1 Evaluations. There are two different methods of evaluating the compressibility, and the pertinent method shall be indicated on relevant part drawing. 5.1.1 Evaluation Method
14、1. Determination of relative or percentage compression. Compression (Z) = h 4 F h 5h4 100(%) 5.1.2 Evaluation Method 2. Determination of absolute compression. Compression (Z) = h 4 F h 5 (mm) 5.2 Expression of Results. 5.2.1 Relative compression shall be expressed as a percentage or a calculated num
15、ber. 5.2.2 Absolute compression shall be expressed in mm (if necessary, to the nearest 0.1 mm). 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of th
16、e 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. Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 4.2.4 4D7 (20.1) N8 F:E8 4F:$) 6 :,* 4G D7 4. .8$ . 8&
17、4D8 “8* 0.1 mm: :9IF7 2e8 -PE ,h# :,) 4G D7 F:E8x (180.9) N: :44P 98= F:E8 (201.0) N (4G F:E )8 %L$) F$ . 4G F:E8 4) .E $+7 +d%P 7# $+7 +d%P F:E8x 4G F:E8p) F 3L 8$ . 4.2.6 4G F:E: 4D8x 64A 1B) (102) 2e8x D4F# -8t %4:8 -8 88p+ , 4) .E $+7 8F$ . 5.1.1 D4 - 1. 6(8x 2e (Z) = h 4 F h 5h4 100(%) 5.1.2 D4
18、 - 2. 9(8p) EG8F# - . 62e (Z) = h 4 F h 5 (mm) 5.2 0 EG8 . 5.2.1 1$495 /xF8t 1%P 3_8 Gm8t D2pC) E4F$ . 5.2.2 9(8t mm ) E4F$ . (Fx7F 7 0.1 mm: E4 ). 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
19、, -18 9PF 728 957 7 .* 9IF# 8t ., E:4 1788 =y8 1F8$ . 7 768 9I8 7.1 98,l 76 . F$-1F 68 . 7.2 66 -C dGl . F$-1F 68 . GM KOREA ENGINEERING STANDARDS EDS-T-7414 Copyright 2011 General Motors Company All Rights Reserved November 2011 Page 4 of 4 Version : 5 8 Coding System This standard shall be referen
20、ced in other documents, drawings, etc., as follows: 8 Ed - $* ,l2P! $+ &%72P ., E:48 87%T &# $80 M8 EdF$ . English Compressibility to EDS-T-7414 - A 1 - (205) % Requirements Evaluation Method (clause 5.1.1) Type of Pressure Foot (clause 3.1.2) Test Method Designation ,l 89IF:E72P8 -PE ,h8 62e - EDS-
21、T-7414 - A 1 - (205) % 7 F D4 - (5.1.1F ) 6 :, (3.1.2F ) 4G - 4G F+ 9 Release and Revisions This standard was originated in October 1991. It was first approved by Engineering Standard Committee in October 1991. It was first published in October 1991. 9 9P9I -C P9I 8)Y ., E:48t 1991“x 1087 E:4 -Gl4 .
22、7 %L6 , d3TE:41,h7 8F 1991 “x 10 87 38%L6$ . ., E:48t 1991 “x 10 87 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 5 NOV 2011 Apply new Engineering Standard Template. Superceded (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 =* (G)8*4G D4 )
