1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58to cleavage of high-strength adhesive bonds under impact conditions Wedge impact methodThe European
2、 Standard EN ISO 11343:2005 has the status of a British StandardICS 83.180Adhesives Determination of dynamic resistance BRITISH STANDARDBS EN ISO 11343:2005BS EN ISO 11343:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 January 2006 BS
3、I 23 January 2006ISBN 0 580 47495 XCross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility
4、of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summ
5、ary of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 7 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issu
6、ed since publicationAmd. No. Date CommentsA list of organizations represented on this committee can be obtained on request to its secretary. present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monit
7、or related international and European developments and promulgate them in the UK.National forewordThis British Standard is the official English language version of EN ISO 11343:2005. It is identical with ISO 11343:2003. It supersedes BS EN 14493:2002 which is withdrawn.The UK participation in its pr
8、eparation was entrusted to Technical Committee PRI/52, Adhesives, which has the responsibility to: aid enquirers to understand the text;EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11343 May 2005 ICS 83.180 Supersedes EN 14493:2002 English version Adhesives - Determination of dynamic res
9、istance to cleavage of high-strength adhesive bonds under impact conditions - Wedge impact method (ISO 11343:2003) Adhsifs - Dtermination de la rsistance dynamique au clivage de joints colls haute rsistance soumis aux conditions dimpact - Mthode dimpact au coin (ISO 11343:2003) Klebstoffe - Bestimmu
10、ng des dynamischen Keil-Schlag-Widerstandes von hochfesten Klebungen unter Schlagbelastung - Keil-Schlag-Verfahren (ISO 11343:2003)This European Standard was approved by CEN on 29 April 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
11、 giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official
12、versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgi
13、um, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COM
14、IT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11343:2005: EForeword The text of ISO 11343:2003 has been pr
15、epared by Technical Committee ISO/TC TC 61 “Plastics“ of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11343:2005 by Technical Committee CEN/TC 193 “Adhesives“, the secretariat of which is held by AENOR. This European Standard shall be given the status of
16、 a national standard, either by publication of an identical text or by endorsement, at the latest by November 2005, and conflicting national standards shall be withdrawn at the latest by November 2005. This document supersedes EN 14493:2002. According to the CEN/CENELEC Internal Regulations, the nat
17、ional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, P
18、ortugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 11343:2003 has been approved by CEN as EN ISO 11343:2005 without any modifications. Safety: Persons using this standard shall be familiar with normal laboratory practice. This standard does
19、 not purport to address all the safety problems, if any, associated with its use. It is the responsibility of the user to establish safety and health practices and to ensure compliance with any European or national regulatory conditions. EN ISO 11343:2005Reference numberISO 11343:2003(E)INTERNATIONA
20、L STANDARD ISO11343Second edition2003-04-01Adhesives Determination of dynamic resistance to cleavage of high-strength adhesive bonds under impact conditions Wedge impact method Adhsifs Dtermination de la rsistance dynamique un clivage de joints colls haute rsistance soumis aux conditions dimpact Mth
21、ode dimpact au coin EN ISO 11343:2005ii iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle . 2 5 Apparatus. 2 6 Specimens . 3 7 Test procedure 6 8 Expression of results 7 9 Precision 7 10 Test report 7 EN ISO 11343:2005iv Foreword ISO (the Intern
22、ational Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has b
23、een established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical sta
24、ndardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies f
25、or voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or a
26、ll such patent rights. ISO 11343 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products. This second edition cancels and replaces the first edition (ISO 11343:1993), which has been technically revised. EN ISO 11343:20051Adhesives Determination of dynamic resistance to
27、cleavage of high-strength adhesive bonds under impact conditions Wedge impact method 1 Scope This International Standard specifies a dynamic impact wedge method for the determination of the cleavage resistance under impact loading of high-strength adhesive bonds between two metallic adherends, when
28、tested under specified conditions of preparation and testing. This test procedure does not provide design information. The method allows a choice of sheet metal substrate corresponding to those materials frequently used in industry, e.g. for automotive applications.g22 Normative references The follo
29、wing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 291:1997, Plastics Standard atmospheres for conditioni
30、ng and testing ISO 10365:1992, Adhesives Designation of main failure patterns EN 13887:1), Structural adhesives Guidelines for surface preparation of metals and plastics prior to adhesive bonding 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.
31、1 dynamic resistance to cleavage force per unit width necessary to bring an adhesive joint to the point of failure by means of a stress applied by a wedge moving between the two substrates of the joint, and thus separating the adherends in a peeling mode NOTE It is expressed in kilonewtons per metre
32、. 1) To be published. EN ISO 11343:20052 4 Principle The method consists of the determination of the average cleavage resistance, expressed as force or energy, of the adhesive bond between two metallic adherends. The cleavage corresponds to the separation of the adherends by a wedge, moving at high
33、speed, whose displacement is initiated by an impact. 5 Apparatus 5.1 Instrumented impact-testing machine, capable of applying an impact energy of at least 50 J and preferably up to 300 J and an impact speed of at least 3 m/s and preferably up to 5,5 m/s. It shall be provided with a suitable grip to
34、hold the specimen. The jaws of this grip shall firmly engage the outer part of the ends of the metallic adherends and shall have provision for positive location of these adherends by means of a hardened-steel bolt passing through the grips and through an 8 mm hole predrilled in the specimens, to cla
35、mp the assembly together. The machine shall be equipped with an instrument capable of registering and storing the force data during the impact event, as a function of time or displacement of the wedge. The response time shall be at least an order of magnitude shorter than the impact event. The machi
36、ne shall be equipped with a microprocessor/computer in order to perform the necessary calculations for expression of the results. Figure 1 represents a pendulum-type impact machine, using a piezoelectric transducer fixed to the specimen clamp. NOTE 1 Falling-weight and servohydraulic-impact machines
37、 may be used for this test in addition to pendulum machines. Suitable machines are commercially available2). NOTE 2 Data collection is controlled by the machine type. A servohydraulic machine provides both force-time and force-displacement data, while a pendulum-type or a falling-weight machine prov
38、ides force-time and, by calculation, force-displacement data. Therefore, both types of data are allowed. NOTE 3 The machine should be equipped with an environmental chamber to allow conditioning and testing at different temperatures if required. 5.2 Test wedge, made of hardened steel, for cleaving t
39、he specimen (see Figures 2 and 3, symmetric and asymmetric wedges). The wedge, attached to its support frame which has a vertical degree of freedom, is pulled through the adhesive joint by the force of the impact on the frame. Because of the degree of freedom, the wedge aligns itself with the adhesi
40、ve joint during the test. The included angle of the wedge, its leading-edge radius and its maximum depth will determine the progression of opening of the bonded joint ahead of the wedge tip. The wedge surface condition and state of cleanliness shall be maintained and inspected before each determinat
41、ion, since friction unduly increases the energy consumed. The three-dimensional diagram in Figure 4 shows the interrelation of the path of the impact head and the positions of the wedge and the test specimen. 5.3 Device for measuring thickness, with an accuracy of 0,01 mm. 5.4 Wedge support frame, c
42、onsisting of two parallel steel bars with the wedge fixed between them (at one of their ends) and a steel crosshead, for receiving the impact, positioned parallel to the wedge and connected perpendicular to the two bars at their other ends. The bar cross-section shall be 6,0 mm to 6,5 mm wide by 4,5
43、 mm to 5,0 mm high. The total mass of the assembly shall be 820 g 5 g. 2) Suppliers of such machines are: Rosand Precision Ltd., Balds Lane, Lye, Stourbridge, West Midlands, DY9 8SH, UK, and Zwick GmbH 2 m/s unless otherwise specified for steel adherends). Select the temperature specified and allow
44、the specimen to stabilize at that temperature for a specified period before applying the impact. 7.2 During the impact event, the transducer signal will be automatically and unselectively detected by the microprocessor and recorded; the force-time (or force-displacement) data can subsequently be man
45、ipulated separately. EN ISO 11343:200577.3 Discard the result if the clamping bolt hole in the adherend becomes elongated or if the adherend fails on either side of the bolt hole. This indicates that the clamping pressure employed is insufficient and an adjustment is necessary. 8 Expression of resul
46、ts Calculate an average cleavage force from the record of force-time (or force-displacement) data of the impact event, disregarding the first 25 % and the last 10 % of the curve. Divide the average cleavage force by the specimen width to provide a value for the dynamic resistance to cleavage, expres
47、sed in kilonewtons per metre of specimen width. If the material being tested provides force curves which are highly irregular, then discard the test result. Using the computer, calculate the energy by integration of the force-time (or force-displacement) data between the first 25 % and the last 10 %
48、 of the curve. 9 Precision The precision of this test method is not known because interlaboratory data are not available. When interlaboratory data are obtained, a precision statement will be added at the following revision. 10 Test report The test report shall include the following information: a)
49、a reference to this International Standard; b) all details necessary for complete identification of the adherends, including thickness, width and surface preparation, and whether preformed or flat adherends were used; c) all details necessary for complete identification of the adhesive tested, including type, source, manufacturers code number, batch number, etc.; d) a description of the bonding process, including the method of application of the adhesive, drying and precuring conditions (wher
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