1、Designation: D 3658 01Standard Test Method forDetermining the Torque Strength of Ultraviolet (UV) Light-Cured Glass/Metal Adhesive Joints1This standard is issued under the fixed designation D 3658; the number immediately following the designation indicates the year oforiginal adoption or, in the cas
2、e of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the simplistic comparison ofstrengths of glass/metal joints when t
3、he adhesive is cured byultraviolet (UV) radiation and standard specimens are used andtested under specified conditions of preparation, radiation, andload.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are providedfor information purposes
4、only.1.3 This test method involves torque loading UV-bondedhexagonal metal blocks to glass plates.1.4 This test method may be used to obtain comparativetorque strength-to-failure data for other bonded joint systems,radiation cured or not.1.5 This standard does not purport to address all of thesafety
5、 concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:A 109 Specification for Steel, Stri
6、p, Carbon, (0.25 Maxi-mum Percent), Cold-Rolled2A 167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and Strip2B 36 Specification for Brass Plate, Sheet, Strip, and RolledBar3B 152 Specification for Copper Sheet, Strip, Plate andRolled Bar3B 209 Specification for A
7、luminum and Aluminum-AlloySheet and Plate4B 265 Specification for Titanium and Titanium Alloy Strip,Sheet, and Plate5D 907 Terminology of Adhesives6D 1002 Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Ten-sion Loading (Metal-to-Metal)63. Terminology
8、3.1 DefinitionsMany of the terms in this test method aredefined in Terminology D 907.4. Significance and Use4.1 This test method provides reasonably accurate informa-tion with regard to the ability of UV curing adhesives towithstand torsional shearing forces. It may be used to deter-mine the effect
9、of environment on torsional shear strength.5. Apparatus5.1 Test system consisting of apparatus capable of transfer-ring a uniform and continuous torque to the bonded hexagonalblock (schematically shown in Fig. 1), and a safety shield orother safety device to prevent injury from possible shatteringgl
10、ass.5.2 An accurate and reliable means of recording load tofailure, that is, x-y or strip chart recorder, should also be part ofthe test system.6. Test Specimens6.1 Recommended specimens are as shown in Fig. 2.6.2 Selection of the test metal for hexagonal blocks is at thediscretion of the user; howe
11、ver, the following grades arerecommended (see Test Method D 1002):Metal SpecificationBrass B 36, Alloy 8Copper B 152, Type AAluminum B 209, Alloy 2024, T3 TemperSteel A 109, Grade 2Corrosion-resisting steel A 167, Type 302Titanium B 2656.3 Hexagonal blocks may be reused after testing by bond-ing the
12、 opposite end of the block or by cleaning the originalbonded end by sanding or grinding and taking care to ensurethat ends are smooth and parallel.6.4 Selection of the glass plate is at the discretion of the1This test method is under the jurisdiction of ASTM Committee D14 onAdhesives and is the dire
13、ct responsibility of Subcommittee D 14.80 on MetalBonding Adhesives.Current edition approved March 10, 2001. Published May 2001. Originallypublished as D 3658 78. Last previous edition D 3658 90 (1995).2Annual Book of ASTM Standards, Vol 01.03.3Annual Book of ASTM Standards, Vol 02.01.4Annual Book o
14、f ASTM Standards, Vol 02.02.5Annual Book of ASTM Standards, Vol 02.04.6Annual Book of ASTM Standards, Vol 15.06.1Copyright ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.user. Standard12-in. (13-mm) thick pressed plate glass isrecommended.7. Preparation of Test Specimen
15、s7.1 The assembly and cure of the specimen is recommendedas shown in Fig. 3.7.2 Cut glass plates 3 by 3 in. (76 by 76 mm) square to fitthe holding fixture without lateral movement.7.3 A recommended cleaning procedure is to soak the glassplates in a dilute detergent solution for 2 to 3 min, followed
16、bylight scrubbing with an absorbent cleaning tissue.7Thenthoroughly rinse the glass plates with distilled or deionizedwater and air dry.7.4 Metal hexagonal blocks,12 in. (13 mm) high, may beprepared by light sanding with 400 grade wet or dry emerypaper, followed by solvent wiping, such as 1,1,1-tric
17、hloro-ethane.NOTE 1Preparation of adherends are recommended only. Users mayemploy methods conducive to actual practice. Reported data should bequalified as to the method of surface preparation.7.5 Apply adhesive to the hexagonal button in sufficientquantity to cause wetting of the entire surface whe
18、n clampingpressure is applied by means of two 10-lb (0.9-kg) springclamps.8. Procedure8.1 The level of the radiation and time of exposure shouldbe within the tolerances specified for the cure.8.2 Measure the intensity of the radiation with a suitablemeter sensitive to the radiation used. Place the m
19、eter in aposition related to the bond line.8.3 If the material is subject to post curing, it must remainat specified conditions of temperature, humidity, etc, prior totesting.8.4 Fully cured specimens may be subjected to environmen-tal exposure such as weathering, humidity, temperature, orcombinatio
20、ns thereof, prior to testing.7Kimwipes, available from Kimberly-Clark Corp., 128 N. Lake, Neenah, Wisc.54956, or equivalent, have been found satisfactory for this purpose.Details1Base plate2Upright3Mounting bracket4Lebow socket wrench sensor Model 2133-1035Pillow blockBoston #PPB106ExtensionArmstron
21、g #4-105 A71-in. (25.4-mm) hexagonal socketArmstrong #A4-6328UV specimen (see Fig. 2)9Adjustable side guides (Fig. 2)10Neoprene pad (bonded to Detail 9) (Fig. 2)Dimensionsin. mmA 0.50 13B 3.75 95C 0.62 16D 5.50 140E 0.50 13F 6.75 170G 6.25 160H 2.62 66FIG. 1 UV Testing ApparatusD 365828.5 Test the b
22、onded specimen as follows:8.5.1 Place the specimen in the holding fixture, ensuringthat no lateral movement is evident.8.5.2 Mechanically apply a torque on the hex nut assemblyor by means of a constant drive loader at a rate of 0.5 rpm(suggested) until failure occurs.8.5.3 Record the load at failure
23、 and the nature and amountof the failure (cohesive in adhesive or glass or adhesive atmetal/adhesive or glass/adhesive interface). Express all failureloads in lbfin. (or Nm).9. Report9.1 Report the following information:9.1.1 Complete identification of the adhesive tested, includ-ing type, source, m
24、anufacturers code numbers, form, etc.9.1.2 Complete identification of the metal used, its thick-ness, and the method of cleaning and preparing its surfacesprior to bonding.9.1.3 Complete identification of the glass used, as in 9.1.2.9.1.4 Application and bonding conditions used in preparingspecimens
25、, including the type intensity (watts per steradian),and exposure time of the radiation used.9.1.5 Conditioning procedure prior to testing.9.1.6 Number of specimens tested.9.1.7 Maximum, minimum, and average values for load atfailure.9.1.8 Standard deviation and coefficient of variation for thespeci
26、mens tested.9.1.9 Average thickness of the adhesive layer after cure ofthe joint. Subsequent measurements should be obtained if theDetails1Glass plate2Hexagonal metal blockDimensions Dimensionsin. mm in.2mm2A 3.00 76 Bond0.866 559B 1.50 38 Area FC 0.47 12D 1.00 25E 0.50 13FIG. 2 UV Specimen Configur
27、ationD 36583specimens are exposed to environmental conditioning.9.1.10 The nature of the failure, including the averageestimated percentages of failure; that is, adhesives-cohesive,glass-cohesive, interface failure (glass/adhesive or metal/adhesive).10. Precision and Bias10.1 Precision and bias for
28、this test method are beingdetermined and will be available by April 2005.11. Keywords11.1 adhesive; glass; light-cured; metal; torque; ultravioletThe American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connectionwith any item mentione
29、d in this standard. Users of this standard are expressly advised that determination of the validity of any suchpatent rights, and the risk of infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and
30、 must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsib
31、letechnical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA
32、19428-2959, United States.Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the above address or at610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website (www.astm.org).Details1UV specimen2Clamp3Neoprene cushion4Clamp support (glass or metal)5Bond surface (Ref.)FIG. 3 Adhesive Joint PreparationD 36584
