1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7671 Test Method for Resistance of Cellular and Related Materials to Humidity Ageing This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW14357. $)2e 8:8 ! 38X2e 4G - Note: 8 E:48t G
2、8 =97 FF7 957%L+ , FG P-P Program .Bd# GMW14357 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved September 2011 Originating Department: GM Korea Engineering Standards Page 1 of 4 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. N
3、ote: In the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This test method determines the effects of humidity ageing on cellular materials. The test attempts, by the use of water vapour at elevated temperature, to simulate the natu
4、rally occurring effects of oxidation and hydrolysis. Deterioration of the material is observed by measurements of physical properties prior to and after ageing. 1.2 Applicability. Cellular material (See clause 5). 2 References Note: Only the latest approved standards are applicable unless otherwise
5、specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. EDS-T-7507 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 A Steam Autoclave or Similar Vessel. This shall be capable of maintaining the required temperature to within 1K and of withstanding the
6、absolute pressure of up to 2.5 bar (250 KPa). 3.1.2 Sample Supports such that, during test, test pieces are supported such that they do no contact one another, the sides of the vessel or the water. Minimal contact with the supports shall also be assured. 1 P7 :0 : ., E:48 6&F !7$ :4-8! 9I8x $4=F 3L
7、6$ . :0 : F67t 7568 18 88x 7 , F6* 72T8p) F$ . 1.1 +95 . ., 4G -8t $)2e 8:8 ! 38X2e8x 9IFd 88F 17F+ , 4G D8x C9I 78 3L:d7 “4P 1G7t 43L .F7 8F 4G D8 ,p2e -G* 9IF$ . 1.2 957 -88 . $)2e 8: (5F =l ). 2 4) E:4 / :0 : C-H +d%P 9I8 6# F 48 07 38%P E:48x 957F$ . 2.1 17 E:4 / . None 2.2 GM E:4 / . EDS-T-7507
8、 2.3 dA E:4 / . None 3 4G 88 3.1 4G 8/x . 3.1.1 3D4 7XB A)= +958x 4#F F 2G F+ , 4G :E 4G D8x ,p8! 7d7 $3: 6 F . GM KOREA ENGINEERING STANDARDS EDS-T-7671 Copyright 2011 General Motors Company All Rights Reserved September 2011 Page 2 of 4 Version : 4 3.2 Test Piece. 3.2.1 The Size of Test Pieces. Te
9、st pieces shall comply with the appropriate requirements for the test method to which physical property tests (i.e. tensile strength, compression set etc.) are to be conducted. 3.2.2 The Number of Test Pieces. 3.2.2.1 For initial sample approval and arbitration purposes: at least 3. 3.2.2.2 For rout
10、ine quality control: at least 1. 4 Procedures 4.1 Conditions. 4.1.1 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such requirements shall be specified on component drawings, test certificates, reports, etc. 4.1.2 Test Temperatures and Periods. 3.2 4G
11、 D . 3.2.1 4G D8 A d . C9I ,p2e4G (88I$ , 62 &% )8x 3LFFd7 959.F 4G D8x :4/xF7 ! 38X2e 4G 987 .F 68 ,p8x . :$4* “W8t G 4G D8x :$4 88F 7)X “#$ . 4.2.3 4G 7d* $H -4.=F 592t ,p2e4G 0# 5.1.192t to EDS-T-7670 - B - 40 % 8F 7 9 4.1.29) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 SEP 2011 Apply new Engineering Standard Template. Superceded (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 =* (G)8*4G D4 )
