1、 ENGINEERING STANDARDS Test Procedure SUPERCEDED EDS-T-3407 Test Method for Determining the Distortion Rate of Mirrors This standard may be applied only for current projects. It is Superceded for all future projects and replaced by GMW16157. 8% =7 -,) 8?8 78 ?U9I- Note: 8 E:48t G8 =97 FF7 957%L+ , F
2、G P-P Program .Bd# GMW16157 ) $4=F7 957F$ . Copyright 2011 General Motors Company All Rights Reserved August 2011 Originating Department: GM Korea Engineering Standards Page 1 of 5 Version : 4 1 Scope Note: Nothing in this standard supersedes applicable laws and regulations. Note: In the event of co
3、nflict between the Korean and English language, the Korean language shall take precedence. 1.1 Purpose. This standard aims at specifying the method of measuring the distortion rate of mirrors in automobiles for observing by the driver of the area around the vehicle or the rear view. 1.2 Applicabilit
4、y. This standard applies to mirrors for automobiles, which are classified into the inside mirror, outside mirror and under mirror according to attached positions or purpose of use. The distortion rate test applies to all these mirror types. 2 References Note: Only the latest approved standards are a
5、pplicable unless otherwise specified. 2.1 External Standards/Specifications. None 2.2 GM Standards/Specifications. None 2.3 Additional References. None 3 Resources 3.1 Equipment. 3.1.1 Distortion Rate Measuring Equipment (See Figure 1). 3.1.2 Camera 3.2 Test Piece. 3.2.1 Test piece shall be applied
6、as complete component, for approval test purposes at least 3 test pieces and quality test or incoming test at least 1 test piece shall be tested. 1 P7 :0 : ., E:48 6, -L118 2X+$ (.(d ) Continuous line: reflected image of scale on screen of Rn in RO time. Ohn: the largest radius of distortion. Dotted
7、 line: concentric scale on screen. / 42T : RO4 Rn8 ?*8 #$48 -L:* . 9D2T : ?*88 % 4 8 # . 1000 u nnRRRH 0 : 78 (%). Rn: $8 47 , % 4 8 -L118 D -L:* (mm). 8OOO nnnnhbaR Oan, Obn, ! ! Ohn: n-;, -L118 5 -L:* (mm). RO: $4 D# 2 -L118 -L:* (mm). GM KOREA ENGINEERING STANDARDS EDS-T-3407 Copyright 2011 Gener
8、al Motors Company All Rights Reserved August 2011 Page 4 of 5 Version : 4 5.1.2 Distortion Rate Criteria. Type of Mirror Surface Distortion Rate Convex mirror 2 % max. Plane mirror 5 % max. Under mirror convex mirror 8 % max 6 Safety This standard may involve hazardous materials, operations, and equ
9、ipment. This standard does not propose to address all the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 7 Notes 7.1 Glossary.
10、Not applicable. 7.2 Acronyms, Abbreviations, and Symbols. Not applicable. 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: 5.1.2 78 . 7+8 . Distortion Rate D+ 7 2 % 8F . .0)+ 7 5 % 8F . 6$ -,) .0)+ 7 8 % 8F . 6 6|987 $4F 7 9 ., E:48t 88G ,p: , 86 , 8/
11、x &%8x E FF 3L 8$ . ., 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 . F$-1F 68 . 7.2 66 -C dGl . F$-1F 68 . 8 Ed - $* ,l2P! $+ &%72P ., E:48 87%T &# $80 M8 EdF$ . English Test Method
12、 for Determining the Distortion Rate of Mirrors to EDS-T-3407 Test method Designation ,l 8% =7 -,) 8?8 78 ?U9I - EDS-T-3407 4G - 4G F+ GM KOREA ENGINEERING STANDARDS EDS-T-3407 Copyright 2011 General Motors Company All Rights Reserved August 2011 Page 5 of 5 Version : 4 9 Release and Revisions This
13、standard was originated in March 1994. It was first approved by Engineering Standard Committee in March 1994. It was first published in March 1994. 9 9P9I -C P9I 8)Y ., E:48t 1994 “x 3 87 E:4 -Gl4 .7 %L6 , d3TE:41,h7 8F 1994“x 387 38%L6$ . ., E:48t 1994“x 387 ) 9P9I / -PF%L6$ . Issue / P9I8)Y Publication Date / 38 88 Description (Organization) / 9PP9I76 (:04.2P ) 4 AUG 2011 Apply new Engineering Standard Template. Superceded (Body & Ext. Subsystem Validation Team) / 4 d3TE:4 64 957 . F9I957 =* (Body & Ext. .E D4D4 )
