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1、BRITISH STANDARD BS EN ISO 6603-1:1997 BS 2782-3: Method 353A: 1991 Incorporating Amendment No.1 to BS 2782: Method 353A:1991 (renumbers the BS as BS EN ISO 6603-1: 1997) Plastics Determination of multi-axial impact behaviour of rigid plastics Part 1: Falling dart method The European Standard EN ISO
2、 6603-1:1996 has the status of a British Standard IMPORTANT NOTE. Before reading this method it is essential to read BS 2782-0, Introduction, issued separately. ICS 83.080.01 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6603-1:1
3、997 This British Standard, having been prepared under the direction of the Plastics and Rubber Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 29 November 1991 BSI 10-1999 First published as Methods 306B and 306B in BS 2782 November 1970
4、Second edition November 1991 The following BSI references relate to the work on this standard: Committee reference PRM/21 Draft for comment 83/38641 DC ISBN 0 580 20308 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Plastics and Rubbe
5、r Standards Policy Committee (PRM/-) to Technical Committee PRM/21, upon which the following bodies were represented: British Plastics Federation British Steel Industry British Telecommunications plc British Textile Confederation Department of the Environment (Building Research Establishment) Depart
6、ment of Trade and Industry (National Physical Laboratory) EEA (The Association of Electronics, Telecommunications and Business Equipment Industries) Electrical and Electronic Insulation Association (BEAMA Ltd.) Electrical Installation Equipment Manufacturers Association (BEAMA Ltd.) Ministry of Defe
7、nce Packaging and Industrial Films Association Plastic Industrial Containers Association Plastics and Rubber Institute PIRA International RAPRA Technology Ltd. Yarsley Technical Centre Ltd. The following body was also represented in the drafting of the standard, through subcommittees and panels: Mal
8、aysian Rubber Producers Research Association Amendments issued since publication Amd. No.DateComments 8640June 1997Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6603-1:1997 BSI 10-1999i Conte
9、nts Page Committees responsibleInside front cover National forewordii Foreword2 1Scope and field of application3 2References3 3Definitions3 4Principle4 5Apparatus4 6Test specimens4 7Procedure4 8Test report6 Annex A Examples of calculation8 Annex B Alternative method18 Figure 1 Sections through speci
10、mens damaged by a “crack”10 Figure 2 Sections through specimens damaged by a “break”11 Figure 3 Example for failure in case of shattering11 Figure 4 Examples for the failure criterion “indentation” for two materials of differing toughness12 Figure 5 Characteristics of apparatus (example)13 Figure 6
11、Test specimen support14 Figure 7 Example of method A (staircase) test results with constant height of fall (0,66 m)15 Figure 8 Example of method A (staircase) test results with constant mass (1 kg)16 Figure 9 Example of plot of method B (statistical) with constant height of fall (1 m)17 Table 18 Tab
12、le 29 Publication(s) referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 6603-1:1997 ii BSI 10-1999 National foreword This method has been prepared under the direction of the Plastics and Rubber Standards P
13、olicy Committee and is the English language version of EN ISO 6603, Plastics Determination of multi-axial impact behaviour of rigid plastics Part 1:1996 Falling dart method, published by the European Committee for Standardization (CEN). It is identical with ISO 6603-1:1985 published by the Internati
14、onal Organization for Standardization (ISO). Annex B refers to ISO 6603-2. This was published in 1989 and has been implemented as BS EN ISO 6603-1:1997. WARNING NOTE. This British Standard, which is identical with ISO 6603-1, does not necessarily detail all the precautions necessary to meet the requ
15、irements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the method should be operated only by trained personnel. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards a
16、re responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International StandardCorresponding British Standard BS 2782 Methods of testing plastics ISO 291:1977Part 0:1982 Introduction (Appendix A is id
17、entical) ISO 293:1986Method 901A:1988 Compression moulding test specimens of thermoplastic materials (Identical) ISO 294:1975Method 910A:1977 Injection moulding test specimens of thermoplastic materials (Identical) ISO 2557-2:1986Method 940B:1989 Preparation of test specimens of amorphous thermoplas
18、tics with a specified reversion by injection moulding rectangular plates (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, pages 2 to 18, an inside back cover and a back cover. This standard has been updated (see copyrig
19、ht date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6603-1 Decem
20、ber 1996 ICS 83.080 Descriptors: Plastics, rigid plastics, tests, impact tests, test equipment English version Plastics Determination of multi-axial impact behaviour of rigid plastics Part 1: Falling dart method (ISO 6603-1:1985) Plastiques Dtermination du comportement des plastiques rigides sous un
21、 choc multiaxial Partie 1: Essai par chute de projectile (ISO 6603-1:1985) Kunststoffe Bestimmung des mehrachsigen Stoverhaltens von festen Kunststoffen Teil 1: Fallbolzenversuch (ISO 6603-1:1985) This European Standard was approved by CEN on 1994-12-14. CEN members are bound to comply with the CEN/
22、CENELEC Internal Regulations which stipulate the conditions for 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 a
23、ny CEN member. This European Standard exists in three official 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.
24、CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation E
25、uropisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members Ref. No. EN ISO 6603-1:1996 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6603-1:1996 BSI 10-1999 2 Fore
26、word The text of the International Standard from Technical Committee ISO/TC 61, Plastics, of the International Organization for Standardization (ISO) has been taken over as a European Standard by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by IBN. This European Standa
27、rd shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 1997, and conflicting national standards shall be withdrawn at the latest by June 1997. According to the CEN/CENELEC Internal Regulations, the national standards o
28、rganizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffi
29、eldun, na, Mon Nov 20 02:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6603-1:1996 BSI 10-19993 1 Scope and field of application This International Standard specifies a method for the determination of impact properties of rigid plastic materials in the form of disks or square pieces of sta
30、ndard dimensions, moulded directly or cut from sheets (see note 1). This falling dart method is used for the assessment of plastic sheeting or mouldings under an impact stress applied at right angles to the plane of the sheet (see note 2). Part 1 of this International Standard can be used if it is s
31、ufficient to characterize the impact behaviour of plastics by an impact-failure energy. If recording of the force-deformation curve is necessary, Part 2 shall be used (see Annex B). Two methods of test are described. The preferred method is method A, the staircase method. In this technique, a unifor
32、m energy increment is employed during testing and the energy is decreased or increased by the uniform increment after testing each test specimen, depending upon the result (fail or not fail) observed for the preceding test specimen. Method B is the statistical method. In this technique, successive g
33、roups of at least ten test specimens each are tested. Impact failure energy is calculated by statistical methods (see note 3). This method shall be used where both brittle and ductile failures occur within a homogeneous group of test specimens. NOTE 1 The test results obtained by testing specimens p
34、repared separately from moulding materials cannot be simply related to mouldings of other shapes because the results of these tests depend on the shape of the moulding and the conditions of their production. NOTE 2This International Standard is not suitable for thin films. NOTE 3The variable energy
35、can be realized either by choosing a variable falling mass at constant height or by choosing a variable falling height at constant falling mass. The variable height procedure is velocity dependent and differing results may be observed depending upon the materials strain rate. Therefore, the constant
36、 falling height method is preferred. 2 References ISO 291, Standard atmospheres for conditioning and testing. ISO 293, Plastics Recommended practice for compression moulding test specimens of thermoplastic materials. ISO 294, Plastics Recommended practice for injection moulding test specimens of the
37、rmoplastic materials. ISO 2557-2, Plastics Amorphous thermoplastic moulding materials Preparation of test specimens with a defined level of shrinkage Part 2: Test specimens in the form of rectangular plates (Injection moulding). 3 Definitions For the purpose of this International Standard, the follo
38、wing definitions apply: 3.1 Failure-criteria terms The following definitions of failure-criteria terms describe definite alterations of the test specimens caused by the falling mass. The criterion of failure shall be that specified in the International Standard for the material or shall be agreed up
39、on by the interested parties. 3.1.1 crack any fissure that can be observed by the unaided eye and that does not penetrate the full thickness of the material (see Figure 1) 3.1.2 break any fissure through the full thickness of the material (see Figure 2) 3.1.3 penetration failure in which the indente
40、r wholly penetrates the test specimen (see Figure 3) 3.1.4 shattering breaking of the test specimen into two or more parts (see Figure 3) 3.1.5 indentation an irreversible deformation without cracking. The amount of indentation is measured by the depth of the dent (dt) (see Figure 4). The value of d
41、t that constitutes the pass-fail criterion shall be agreed by the interested parties NOTEIf other criteria of failure (crazing, stress whitening, etc.,) are of importance, these criteria must be defined and included in the test report. 3.2 Impact-failure terms 3.2.1 50 % impact-failure energy, E50 t
42、he energy that will cause 50 % of the test specimens to fail according to one of the criteria in 3.1 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:16:34 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 6603-1:1996 4 BSI 10-1999 3.2.2 50 % impact-failure mass, M50 the mass that will caus
43、e 50 % of the test specimens to fail, according to one of the criteria in 3.1, at a given falling height 3.2.3 50 % impact-failure height, H50 the height that will cause 50 % of the test specimens to fail, according to one of the criteria in 3.1, using a given falling mass 4 Principle The impact str
44、ength of suitably sized test specimens is determined by striking them with a weight dropped vertically from a known height. Two methods of adjusting the energy at impact are permitted: altering the mass at constant height (preferred) and altering the height at constant mass. Two methods of test are
45、also given: staircase (preferred) and statistical. 5 Apparatus The apparatus shall be constructed (for example, Figure 5) using the following components: 5.1 Test specimen support A hollow steel cylinder of internal diameter 40 2 mm with a minimum height of 12 mm (see Figure 6). The support shall be
46、 placed on a solid base and shall be designed such that air cannot be trapped under the test specimen, thus avoiding a possible spring effect. 5.2 Clamping device (optional) A two-piece annular specimen clamp having an inside diameter of 40 2 mm is recommended. Pneumatically operated clamps have bee
47、n successfully employed. If a clamping device is used, ensure that no slippage occurs. NOTEThe results for clamped and unclamped specimens are likely to be different. 5.3 Falling dart system Device capable of holding and releasing a weighted striker, such that the striker may fall contained by guide
48、(s). The fall shall be substantially without friction or losses through windage, or the amount of friction has to be taken into account in the calculations. 5.4 Weighted striker The preferred striker shall have a polished hardened hemispherical striking surface of diameter 20 0,2 mm. Alternatively,
49、a 10 0,1 mm diameter striking surface may be used. The strikers shall be constructed of steel. 5.5 Weights (masses) Appropriate weights that can be firmly attached to the striker. The combined mass of the weights to be attached and the mass of the striker shall be known to within 1 %. 5.6 Appropriate device for catching the dart after drop To prevent multiple impact and damage of the striker. 6 Test specimens 6.1 Preparation and sampling of test specimens The test specimens shall be prepared and sampled in accorda