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1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2002 Society of Automotive Engineers, Inc. All rights reserved.Printed in U
3、.S.A. TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790 SAE WEB ADDRESS: http:/www.sae.org 400 Commonwealth Drive, Warrendale, PA 15096-0001 AEROSPACE STANDARD AS9132 Issued2002-02 Data Matrix (2D) Coding Quality Requirements for Parts Marking TABLE OF CONTENTS 1.SCOPE.2 1.1Convention.2
4、2.NORMATIVE REFERENCES.2 3.MARKING REQUIREMENTS.3 3.1General Requirements.3 3.2Dot Peening.4 3.2.1 Instructions for Determination of Marking Parameters 4 3.2.2 Requirements 4 3.3Laser9 3.3.1 Requirements 9 3.3.2 Instructions for Marking Parameters in Laser10 3.4Electro-Chem Etching10 4.MARKING VALID
5、ATION AND MONITORING11 APPENDIX A DOT PEENING DATA CAPACITY GUIDELINES12 APPENDIX B DOT PEENING - RECOMMENDATION FOR STYLUS GRINDING.14 APPENDIX C EXAMPLES REQUIRED TOLERANCES IN COMPARISON TO THE NOMINAL CELL SIZES FOR DOT PEENING .16 APPENDIX D EXAMPLE METHODOLOGY FOR CHECKING DOT PEEN CHARACTERIS
6、TICS.18 Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted without license from IHS -,-,- SAE AS9132 - 2 - 1.SCOPE: This Standard defines uniform Quality a
7、nd Technical requirements relative to metallic parts marking performed in using “Data Matrix symbology“ (2D) coding used within the aerospace industry. The ISO 16022 specifies general requirements (data characters encodation, error correction rules, decoding algorithm, etc.). In addition to this spe
8、cification, part Identification with such coding is subject to the following requirements to ensure electronic reading (scanning) ability of the symbol. The marking processes covered by this standard are as follows: Dot Peening Laser Marking Electro-Chem Etching Further marking processes will be inc
9、luded if required. Unless specified otherwise in the contractual business relationship, the company responsible for the design of the part shall determine the location of the Data Matrix Marking. Symbol position should allow illumination from all sides for readability. This standard does not specify
10、 information to be encoded, which are requested by customers, in conjunction with the ATA Spec 2000, chapter 9. 1.1Convention: The following conventions are used in this standard : The words “shall” and “must” indicate mandatory requirements. The word “should” indicates mandatory requirements with s
11、ome flexibility allowed in compliance methodology. Producers choosing other approaches to satisfy a “should” must be able to show that their approach meets the intent of the requirement of this standard. The words “typical”, ”example”, “for reference” or “e.g.” indicate suggestions given for guidanc
12、e only. Appendices to this document are for information only and are provided for use as guidelines. 2.NORMATIVE REFERENCES: Air Transport Association (ATA), Spec 2000, chapter 9 “Bar Coding“ Automated Identification Manufacturer, (AIM) “International Symbology Specification-Data Matrix“ (ANSI/AIM B
13、C11-1997) Error Correction Code 200 (ECC200) ISO 16022 “Information Technology International Symbology Specification Data Matrix” AS/SJAC/PrEN 9102 Requirements “First Article Inspection Requirements“ Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001
14、, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted without license from IHS -,-,- SAE AS9132 - 3 - 3.MARKING REQUIREMENTS: 3.1General Requirements: Rows and Columns: Rows and columns connected with 2D Data Matrix symbology shall conform to ANSI/AIM BC11
15、or ISO 16022- ECC200 table Symbol Attributes. Square versus Rectangle: Matrix may be square or rectangular within ECC200 requirements. Square is preferred for easier reading. Quiet Zone: The quiet zone (margin) around the matrix shall be equal to or greater than one (1) cell size. Round Surface: If
16、the marking is made on round/curved surface, the symbol coverage shall be less than 16% of the diameter (or 5% of circumference). Symbol Size: To facilitate electronic reading (scanning) of symbol, the overall symbol size should be less than 1 inch (25,4 mm), outside dimension, longest side. If a si
17、ze over this limit is used, requirements included in this standard shall be applied too. Angular Distortion of the Symbol: Angular deviation of 90 degree plane between row and column shall not exceed 7 degrees. Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/
18、1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted without license from IHS -,-,- SAE AS9132 - 4 - FIGURE 1 - Angle of Distortion 3.2Dot Peening: 3.2.1Instructions for Determination of Marking Parameters: Determine minimum cell size according t
19、o the surface texture. See Table 1 (page 5), Figure 2 (inch) or Figure 3 (mm) pages 5 and 6. Calculate dot size with regard to the above minimum cell size in choosing stylus angle (60, 90 or 120) depending on maximum depth allowed by Engineering requirements. See Table 2 page 7 for the optimum dot s
20、ize. Determine matrix size depending on the information coded in the matrix. (Reference tables in appendix A for minimum matrix size based on available marking real estate). Set up machine (e.g., in height, air pressure, force, etc.) for desired dot geometry. Dot to dot touching is permitted but ove
21、rlapping is not allowed. 3.2.2Requirements: 2D Data Matrix Symbol Nominal Cell Size: The surface texture of the part affects the readability to a 2D Data Matrix performed by dot peening. Table 1 and Figures 2 and 3 show the minimum readable cell size requirements to the surface texture of the part.
22、Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted without license from IHS -,-,- SAE AS9132 - 5 - TABLE 1 - Minimum Readable Cell Size by Surface Texture
23、FIGURE 2 - Minimum Cell Size (Inch) by Surface Texture (inch) Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted without license from IHS -,-,- SAE AS9132
24、- 6 - FIGURE 3 - Minimum Cell Size (mm) by Surface Texture (m) 3.2.2 (Continued): Data Capacity: For information, tables in Appendix A for Dot Peening show the symbol size and the data capacity compared to the nominal cell size and the number of rows and columns relative to surface texture. These ta
25、bles are based on extensive testing. 2D Data Matrix Symbol Quality Requirements: Dot Depth is subject to Engineering requirements. The Dot Depth is based upon the requirements for process, environment survivability and other material considerations. Stylus Radius is also an Engineering Design requir
26、ement. The Maximum tolerance shall not be over than 10% of the Stylus Radius. Surface Color and Color Consistency are specified as an Engineering requirement. In order to maximize readability, surface discoloration should be minimized. Stylus Cone Angle (Reference in Appendix B) is an Engineering re
27、quirement. The Cone Angles permitted are 60, 90 and 120. The tolerance on the Cone Angle shall be 2. Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted wit
28、hout license from IHS -,-,- SAE AS9132 - 7 - 3.2.2 (Continued): Stylus Point Finish shall be polished. Surface texture shall not exceed 32 inch or 0,8 m. Guidance instructions for grinding are given in Appendix B. Stylus Point Concentricity shall be 0.00016 inch or 0,04 mm total indicator reading, o
29、r 0.0008 inch (0,02 mm) radial point displacement. Point concentricity is with respect to stylus centerline. The Dot Size shall not exceed 100% of the nominal cell size and shall not be less than 60% of the nominal cell size for purposes of readability. The ovality (see Figure 4) of the dot shall no
30、t exceed 20% of the cell size. No more than 2% of the total number of cells may contain dots that are outside of these ranges. The minimum dot size shall not be less than 0.0054 inch or 0,132 mm. FIGURE 4 - Definition of Ovality D-d 20% of the Cell Size Table 2 gives limits for dot size and dot cent
31、er offset useable whatever the nominal cell size. TABLE 2 - Limits for Dot Size and Dot Center Offset “Excellent“ is the optimum position within the tolerance band. “Acceptable“ is the position within the full limit of the tolerance range. Copyright SAE International Provided by IHS under license wi
32、th SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted without license from IHS -,-,- SAE AS9132 - 8 - 3.2.2 (Continued): Figures 5 and 6 show definition of nominal cell size, dot center offset and dot size. FIGURE 5 -
33、Definition of Nominal Cell Size, Dot Size and Dot Center Offset FIGURE 6 - Detail Definition of Dot Size Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networking permitted
34、 without license from IHS -,-,- SAE AS9132 - 9 - 3.2.2 (Continued): Appendix C (Table C1 in inches and Table C2 in mm) contains examples required tolerances in comparison to the nominal cell sizes. 2D Data Matrix Symbology Marking on a Colored or Coated Surfaces: When marking is located on a colored
35、 or coated surface, the marking parameters should be validated in an actual production line environment on production parts. The marking process must demonstrate all requirements contained, herein, and shall be validated per Section 4. 2D Data Matrix Symbology Marking on Surfaces Which are Subject t
36、o Further Surface Treatments by Abrasive Methods: Surface treatments like Shot peening and Spindle Deburr can affect the readability of a 2D Data Matrix. Therefore the marking parameters should be validated in an actual production line environment on production parts. The marking process must demons
37、trate all requirements contained, herein, and shall be validated per Section 4. 3.3Laser: 3.3.1Requirements: TABLE 3 Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or networki
38、ng permitted without license from IHS -,-,- SAE AS9132 - 10 - 3.3.2Instructions for Marking Parameters in Laser: 1.Determine matrix size in reference to ECC200 (based on the size of the information to be encoded in the matrix and the marking real estate available) 2.Subject to the laser parameter de
39、finition. NOTE: Further tests are in progress. The next issue of this document will take into account results if needed. 3.4Electro-Chem Etching: TABLE 4 The matrix size shall be determined in reference to ECC200 (based on the size of the information to be coded in the matrix and the marking real es
40、tate available) The following parameters affect quality of marking: power unit voltage output, time of application, type of media use for printer and type of current used (Alternating Current or Direct Current). Tests should be performed to define the proper set-up for each application. NOTE: Furthe
41、r tests are in progress in Electro Chem Etching. The next issue of this document will take into account results if needed. Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59:38 MDTNo reproduction or ne
42、tworking permitted without license from IHS -,-,- SAE AS9132 - 11 - 4.MARKING VALIDATION AND MONITORING: Marking in Data Matrix shall be decoded after a maximum of 2 shoots using an electronic reading (scanning) device*. All characteristics shall be verified during the First Article Inspection (FAI)
43、 per AS/SJAC/PrEN 9102 requirements. Appendix D “Example Methodology for Checking Dot Peen Characteristics“ may be used as a validation guideline for Dot Peen Marking. A Quality Assurance Plan should be developed and instituted which ensures that a FAI validates the quality of the 2D Data Matrix mar
44、king process and which monitors/samples the marking process for declining quality of application which in turn affects matrix readability requirements. For Dot Peen, the monitoring may be as simple as detecting approaching dot overlap with a 10X magnifying glass, or when the electronic reading (scan
45、ning) appears to be negatively trending towards consistently violating the reading limit of 2 shoots. FAI may also apply whenever the marking machine set up is disturbed, or after preventive maintenance or machine repair. This may be applicable in facilitating disposition of marks which cannot be el
46、ectronically read (scanned) per Quality Assurance Plan requirements. Marking equipment should be monitored/serviced through a Preventive Maintenance Plan recommended/developed in conjunction with the equipment supplier to ensure sufficient preventive/ scheduled maintenance and to avoid marking outsi
47、de of allowable limits. Any non-conforming marking shall be submitted to the appropriate non conformance authority for part disposition. * NOTE: Supplier applying 2D Data Matrix to parts and customer(s) receiving 2D Data Matrix marked parts should use technologically equivalent electronic readers wh
48、ich have proven capability to read 2D Data Matrix applied in accordance with this standard. PREPARED UNDER THE JURISDICTION OF SAE COMMITTEE G-14, AMERICAS AEROSPACE QUALITY GROUP Copyright SAE International Provided by IHS under license with SAELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 04/10/2008 18:59