1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-7669 Test Method for Tensile Strength and Elongation of Cellular Materials This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW3010. $)2e 8:8 88I$ -C 8848 4G - Note: 8 E:48t G8 =97
2、FF7 957%L+ , FG P-P Program .Bd# GMW3010 8p) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved August 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
3、the event of conflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose and Applicability. The purpose of this standard is to determine the tensile strength, elongation at break and stress at specific deflection of cellular material. The test is conducte
4、d on the test pieces with standard size and shape or complete components. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. EDS-T-7507 2.3 Additional References. None 3 Resourc
5、es 3.1 Equipment. 3.1.1 Measuring Device of thickness to the nearest 0.1 mm. 3.1.2 Tensile Test Machine. This shall be capable of maintaining the uniform rate of (50050) mm/min and equipped with a force-extension recorder. 3.1.3 Humidity Chamber capable of maintaining the temperature of +23 E 2K and
6、 the relative humidity of (506) %. 3.1.4 Air Circulating Oven capable of maintaining the temperature of +70 E 2.5K. 1 P7 :0 : ., E:48 672P D7(8 -P2F+ , 0F8t ,h4F , $* 4G D8p) 8 4G F$ . 5 4G $8Bd 5.1 D4 . 5.1.1 88 I$ . oAFmaxmax. V 7 d2P , maxV = 88I$ (N/mm2 D# MPa, KPa). Fmax = $4H (N). Ao = $+95 (m
7、m2). GM KOREA ENGINEERING STANDARDS EDS-T-7669 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 4 of 5 Version : 3 5.1.2 Elongation at Break. 100u ooRR LLLHWhere, 0 R = elongation at break (%). LR = measuring length of dumb-bell test piece or complete component at break (mm
8、). Lo = initial measuring length of dumb-bell test piece or complete component (mm). 5.2 Expression of Results. The tensile strength and elongation calculated by above test method shall be expressed as the arithmetic average of individual results and tensile strength expressed in KPa, rounded to the
9、 nearest 0.1 KPa for values up to 100 KPa and rounded to the nearest 1 KPa for values above 100 KPa Elongation at break shall be expressed in % rounded to the nearest 1 %. 6 Safety This standard may involve hazardous materials, operations, and equipment. This standard does not propose to address all
10、 the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary. Tensile Strength: To be the quotient of the initial c
11、ross-sectional area and the maximum force measured when the standard test piece is ruptured. Elongation at Break: To be the quotient of the initial gauge length and the change in gauge length when the standard test piece is ruptured. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 Coding
12、 System This standard shall be referenced in other documents, drawings, etc., as follows: 5.1.2 D7(48 48 . 100u ooRR LLLH7 d2P , 0 R = D7(48 48 (%). LR = 6x)mGI 4G D D# 7x9PE8 D7(4 ?U9Il8 (mm). Lo = 6x)mGI 4G D D# 7x9PE8 E d ?U9I l8 (mm). 5.2 0 E4 . 1d 4G -7 8F 66: 88I$ -C 488t 5 4G 08 13T DF8x ?F7
13、88 I$# KPa) !A!%L 100 Kpa 8! 8 & 0.1 KPa: E4F , 100 KPa81 8 & 1 KPa : E4F$ . DF D7(48 488t %) !A!%L 1 %: E4F$ . 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:
14、4 1788 =y8 1F8$ . 7 768 9I8 7.1 98,l 76 . 88 I$ : E:4 4G D8 D7(%T & ?U9I%P $4H0 4G D8 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 3 AUG 2011 Apply new Engineering Standard Template. Superceded (Polymer / Organic Material Lab Team) / 4 d3TE:4 64 957 . F9I957 =* (G)8*4G D4 )
