1、WORLDWIDEENGINEERINGSTANDARDSTest Procedure GMW16830Tape Lamination to Automotive Components Copyright 2012 General Motors Company All Rights ReservedOctober 2012 Originating Department: North American Engineering Standards Page 1 of 51 ScopeNote: Nothing in this standard supercedes applicable laws
2、and regulations.Note: In the event of conflict between the English and domestic language, the English language shall takeprecedence.1.1 Purpose. This standard describes a daily quality procedure for running a 90 degrees peel test between thetape and the component. The quality of the bond between the
3、 tape, and the component can be determined bypeel strength, and the failure mode observed. Tape attached components can include body side moldings,emblems, nameplates, body claddings, appliqus, door sill plates, fascia trim strip, wheel flares, roof ditchmoldings, and other trim applications.1.2 For
4、eword. Not applicable.1.3 Applicability.1.3.1 Raw Material Approvals. This specification applies only to substrates, adhesion promoters, and tapesthat have been qualified and approved to the appropriate GM specifications.2 ReferencesNote: Only the latest approved standards are applicable unless othe
5、rwise specified.2.1 External Standards/Specifications.None2.2 GM Standards/Specifications.GMW32213 Resources3.1 Facilities. Not applicable.3.2 Equipment.3.2.1 Ninety degree peel test equipment.3.2.2 Roller 6.8 kg.3.2.3 Constant rate of extension tester, Instron, or equivalent.3.2.4 Ninety degree pee
6、l test fixture.3.2.5 Anodized (clear, unsealed) aluminum foil, 0.125 mm x 15.9 mm x 228.75 m (0.005 in x 0.625 in x 750 ft),(Alloy AA1145, Temper H19). This foil is available from: Lawrence and Frederick, Inc., 411 E. North Avenue,Streamwood, IL, 60107, (800) 323-7540 or (630) 289-8300, or equivalen
7、t.3.2.6 Masking tape 25 mm wide.3.2.7 Utility knife.3.2.8 Hand held force gauge.3.3 Test Vehicle/Test Piece. Sections of trim part or entire trim part with tape applied per the productionprocess.3.4 Test Time. Not applicable.3.5 Test Required Information. Not applicable.3.6 Personnel/Skills. Not app
8、licable.Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16830 Copyright 2012 General Motors Company All Rights ReservedOctober 2012 Page
9、2 of 54 Procedure4.1 Preparation. All samples are to be conditioned at GMW3221, Code A prior to each test unless otherwisespecified.4.2 Conditions.4.2.1 Environmental Conditions. Not applicable.4.2.2 Test Conditions. Deviations from the requirements of this standard shall have been agreed upon. Such
10、requirements shall be specified on component drawings, test certificates, reports, etc.4.3 Instructions.4.3.1 Prepare moldings or emblems as follows:4.3.1.1 Moldings. Cut moldings to 150 mm long sections.4.3.1.2 Emblems. Use emblems and other smaller parts as complete assembly. Do not cut.4.3.2 Test
11、 Procedure. Ninety degree peel adhesion of tape to trim part.4.3.2.1 Moldings and Other Larger Parts.4.3.2.1.1 Cut 150 mm long sections of the trim parts to be tested.4.3.2.1.2 Cover 25 mm at the end of the trim with masking tape.4.3.2.1.3 Using the inside edge of the masking tape as a guide, cut th
12、rough the liner and tape down to thetaping surface. Avoid cutting into the trim.4.3.2.1.4 Remove the 125 mm exposed portion of liner.4.3.2.1.5 Laminate a 200 mm long piece of anodized aluminum foil starting at the unmasked end. The foil thatis not in contact with the tape should form a tab extending
13、 approximately 75 mm beyond the razor cut line. SeeFigure 1.4.3.2.1.6 Roll two times with the 6.8 kg roller in the same direction.4.3.3 Emblems and Other Smaller Parts.4.3.3.1 Remove the liner.4.3.3.2 Laminate a piece of anodized aluminum foil. The foil should be long enough to form a tab extendinga
14、pproximately 75 mm beyond the edge of the part.4.3.3.3 Roll two times with the 6.8 kg roller in the same direction.4.3.4 Allow trim sections to dwell at the following conditions:a. 5 minutes at room temperature (RT).b. 24 h room temperature.c. 1 h at 80 C.d. 1.5 h at -30 C.4.3.5 Place the trim secti
15、on (for moldings and other parts longer than 125 mm) into the 90 peel fixture in thelower jaw of an Instron or equivalent. The fixture should securely hold the section and maintain a 90 degreesangle during testing. See Figure 2.4.3.6 Insert the aluminum foil tab in the upper jaw.4.3.7 Initiate the u
16、pper jaw separation at a rate of 300 mm per minute. Peel the entire length of tape. Peelsections from 4.3.4 (a) and (b) at RT, from (c) at 80 C and RT, and from (d) at -30 C.4.3.8 Record the average peel value for the middle 100 mm and the mode of failure.4.3.9 Typically the mode of failure is cohes
17、ive failure (foam split), although some types of tape will not exhibitthis failure mode. Mixed failure modes are frequently observed (cohesive failure and adhesive failure). Certaintape/adhesion promoter/substrate combinations may not exhibit evidence of cohesive failure (foam split) untilafter oven
18、 aging or environmental cycling.4.3.10 Smaller parts will require modifications to the procedure. They may not fit into the 90 degrees peelfixture and may have to be tested using a hand held force gage.4.3.11 For each part/adhesion promoter/tape combination, establish a minimum peel strength(average
19、 peelstrength, or peak load) and a typical failure mode. Use these for daily quality test requirements.Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING
20、 STANDARDS GMW16830 Copyright 2012 General Motors Company All Rights ReservedOctober 2012 Page 3 of 5Figure 1: Test Piece SetupFigure 2: Test Piece in Test Fixture5 Data5.1 Calculations. Record the average peel value for the middle 100 mm (moldings) or for the entire part(emblems and other smaller p
21、arts) and the mode of failure.5.2 Interpretation of Results. Compare average peel strength, or peak load, and failure mode against theestablished values and failure mode for the particular part.5.3 Test Documentation. Report results in a data sheet. See Appendix A.6 SafetyThis standard may involve h
22、azardous materials, operations, and equipment. This standard does not propose toaddress all the safety problems associated with its use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices and determine the applicability of regulatory limitations
23、 priorto use.7 Notes7.1 Glossary. Not applicable.7.2 Acronyms, Abbreviations, and Symbols.ADHF Loss of Adhesion from Aluminum FoilCopyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,
24、-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16830 Copyright 2012 General Motors Company All Rights ReservedOctober 2012 Page 4 of 5ADHP Loss of Adhesion from PartCOH Cohesive Foam SplitISO International Organization for StandardizationN NewtonsRT Room Temperature8 Coding SystemThis standard shall be re
25、ferenced in other documents, drawings, etc., as follows:Test to GMW168309 Release and RevisionsThis standard was originated in June 2012. It was first approved by the Emblem and Sill Plate GlobalSubsystem Leadership Team in October 2012. It was first published in October 2012.Issue Publication Date
26、Description (Organization)1 OCT 2012 Initial publication.Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16830 Copyright 2012 General Mot
27、ors Company All Rights ReservedOctober 2012 Page 5 of 5Appendix ATest Data Sheet A1: GM Specification GMW16830 Daily Quality Control TestingPartNumber: Page: ofISO Certified FileNumber: Tape:Requirements Test Method Specification ResultsNote 1FailureModeNote 290 degrees Aluminum Foil PeelNewtons (Mo
28、ldings and Other Large Parts) Section 4.3.2.1Average PeelStrength5 Minutes Room Temperature24 h Room Temperature1 h at 80 C1.5 h at -30 C90 degrees Aluminum Foil PeelNewtons (Emblems and Other Small Parts) Section 4.3.3Peak PeelStrength5 Minutes Room Temperature24 h Room Temperature1 h at 80 C1.5 h
29、at -30 CNote 1: Each test must be completed on a minimum of three samples.Note 2: After peel test, report mode of failure. Typical failure modes are loss of Adhesion from Part (ADHP), or loss of Adhesion fromAluminum Foil (ADHF), or Cohesive Foam Split (COH).ISO = International Organization for StandardizationCopyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
