1、Designation: D 4501 01e1Standard Test Method forShear Strength of Adhesive Bonds Between RigidSubstrates by the Block-Shear Method1This standard is issued under the fixed designation D 4501; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, 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.e1NOTEAdjunct references were corrected editorially in April 2006.1. Scope1.1 This test method describes a pr
3、ocedure and fixture usedto determine shear strengths of adhesives used to bond mate-rials with moduli higher than the modulus of the adhesive. Thesize and shape of the specimens are variable within thephysical restraints of the fixture.1.2 The values stated in SI units are to be regarded as thestand
4、ard.1.3 This standard does not purport to address all of thesafety 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. Referenc
5、ed Documents2.1 ASTM Standards:2D 907 Terminology of AdhesivesE4 Practices for Force Verification of Testing Machines2.2 ASTM Adjuncts:Shearing Fixture Drawings33. Terminology3.1 Many terms used in this test method are defined inTerminology D 907.4. Summary of Test Method4.1 In this test method, blo
6、cks, plates, or disks are bondedtogether, and the maximum force to shear them apart isdetermined.5. Significance and Use5.1 This test method provides an estimate of the shearstrength of an adhesive on various machinable and nonmachin-able substrate materials. It is particularly applicable for testin
7、gbonds between ceramic, glass, magnet moldings, and plasticparts with one flat face where machining would be difficult orimpractical.6. Apparatus6.1 Testing Machine, conforming to the requirements ofPractices E4, with a capacity of not less than 44 kN (10 000lbf) in tension.6.2 Shearing Fixture Perf
8、orm the tests by using a shear-ing fixture consisting of a holding block and a shearing tool(Figs. 1 and 2). The holding block can accommodate speci-mens up to 80 by 80 by 13 mm (3 by 3 by12 in.). For smallspecimens as shown in Fig. 3B, an adapter plate (Fig. 4) can beinserted into the holding block
9、 to keep the shearing bladewithin its guides and to locate the specimen under the clamp.The shearing blade can accommodate specimens up to 30 by 30by 13 mm (118 by 118 by12 in.).37. Test Specimens7.1 Test specimens can be any size within the limits of theshearing fixture capacity, as given in 6.2. S
10、uggested sizes are asfollows:7.1.1 Metal Blocks25by25by6mm(1by1by14 in.).7.1.2 Ferrite or Ceramic Blocks25by18by13mm(1by34 by12 in.).7.1.3 Wood or Plastic Blocks25by25by13mm(1by1by12 in.).7.1.4 Glass Plates75by75by13mm(3by3by12 in.).7.2 Prepare the adhesive and apply in accordance with therecommenda
11、tions of the adhesive manufacturer. Assemble theadhesive-coated specimens, and bond them in accordance withthe procedure under investigation.NOTE 1Assemble the thrust surfaces, where the straight-sided speci-men contacts the fixture, so that they are parallel to the fixture within1This test method i
12、s under the jurisdiction of ASTM Committee D14 onAdhesives and is the direct responsibility of Subcommittee D14.40 onAdhesives forPlastics.Current edition approved March 10, 2001. Published May 2001. Originallypublished as D 4501 85. Last previous edition D 4501 95.2For referenced ASTM standards, vi
13、sit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Detailed drawings of the fixture are available from ASTM InternationalHeadquarters. Order Adju
14、nct No. ADJD4501. Original adjunct produced in 1985.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.0.005 in./in. (0.005 mm/mm). Center round or shaped specimens withinthe shear blade in such a way that a moment is not applied to the
15、 specimenduring shearing.7.3 Remove any flash or fillets on the loaded side prior totesting. Fig. 3 shows typical specimens after bonding.7.4 Test at least five specimens for each test condition.8. Procedure8.1 Mount the shear fixture in the testing machine with theholding block on top.8.2 Place the
16、 specimen in the shearing fixture in such a waythat one of the adherends is engaged by the holding block andthe other by the shearing tool (Fig. 5). Close the toggle clampon the rear of the holding block to keep the specimen locatedagainst the back face (Fig. 6). (Some adjustment of the padmay be ne
17、cessary to accommodate varying specimen thick-ness.)8.3 Test the specimen using a crosshead speed of 1.26mm/min (0.05 in./min). Record the maximum force sustainedby the specimen.9. Calculation9.1 Express all bond strengths in megapascal (MPa) orpound-force per square inch (psi).10. Report10.1 Report
18、 the following information:10.1.1 Complete identification of the adhesive tested, in-cluding type, source, and manufacturers code numbers.10.1.2 Complete identification of the adherends used, in-cluding dimensions and orientation in the test fixture, and themethod of cleaning and preparing the surfa
19、ces prior to bond-ing.10.1.3 Quantitative application and bonding conditionsused.10.1.4 Average thickness of adhesive layer after formationof bond, within 0.2 mm, and the means of measurement.10.1.5 Sample conditioning and environmental exposure.10.1.6 The temperature at which the test was performed
20、.10.1.7 Number of specimens tested.10.1.8 The maximum shear stress reached for each speci-men.10.1.9 Average shear strength.10.1.10 The nature of the failure: cohesion, adhesion, orvoids in the bondline. Report the average percent of each.11. Precision and Bias11.1 Precision and bias for this test m
21、ethod are beingdetermined and will be available by April 2005.12. Keywords12.1 block-shear; rigid substrates; shear strengthFIG. 1 Shearing ToolFIG. 2 Holding BlockD 4501 01e12(a) Glass to Phenolic Laminate (b) Phenolic Laminate to Phenolic LaminateFIG. 3 Typical Specimens After AssemblyD 4501 01e13
22、FIG. 4 Specimen Adapter Plate for Fig. 3B SpecimenFIG. 5 Specimen Loaded in Shearing FixtureD 4501 01e14ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that
23、determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapprove
24、d or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel
25、 that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).FIG. 6 Rear View of Fixture with Specimen Clamped in PlaceD 4501 01e15
