1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 179-1:2010Plastics Determination ofCharpy impact propertiesPart 1: Non-instrumented impact test (ISO179-1:2010)BS EN ISO 179-1:2010 BRITISH STANDARDNational forewordThi
2、s British Standard is the UK implementation of EN ISO 179-1:2010.It supersedes BS EN ISO 179-1:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/21, Testing of plastics.A list of organizations represented on this committee can beobtained on reque
3、st to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 65137 3ICS 83.080.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standa
4、rd was published under the authority of theStandards Policy and Strategy Committee on 31 July 2010Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 179-1 June 2010 ICS 83.080.01 Supersedes EN ISO 179-1:2000English Version Plastics - Determi
5、nation of Charpy impact properties - Part 1: Non-instrumented impact test (ISO 179-1:2010) Plastiques - Dtermination des caractristiques au choc Charpy - Partie 1: Essai de choc non instrument (ISO 179-1:2010) Kunstststoffe - Bestimmung der Charpy-Schlageigenschaften - Teil 1: Nicht instrumentierte
6、Schlagzhigkeitsprfung (ISO 179-1:2010) This European Standard was approved by CEN on 19 May 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to
7、-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation unde
8、r the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany,
9、 Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Man
10、agement Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 179-1:2010: EBS EN ISO 179-1:2010EN ISO 179-1:2010 (E) 3 Foreword This document (EN ISO 179-1:2010) has been prepared by Tec
11、hnical Committee ISO/TC 61 “Plastics“ in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by Decem
12、ber 2010, and conflicting national standards shall be withdrawn at the latest by December 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such paten
13、t rights. This document supersedes EN ISO 179-1:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finla
14、nd, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 179-1:2010 has been approved by CEN as a EN I
15、SO 179-1:2010 without any modification. BS EN ISO 179-1:2010ISO 179-1:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references2 3 Terms and definitions .2 4 Principle3 5 Apparatus.3 5.1 Test machine3 5.2 Micrometers and gauges 3 6 Test specimens4 6.1 Preparat
16、ion.4 6.1.1 Moulding and extrusion compounds 4 6.1.2 Sheets.4 6.1.3 Long-fibre-reinforced materials .4 6.1.4 Checking.7 6.1.5 Notching .7 6.2 Anisotropy7 6.3 Shape and dimensions .8 6.3.1 Materials not exhibiting interlaminar shear fracture .8 6.3.2 Materials exhibiting interlaminar shear fracture (
17、e.g. long-fibre-reinforced materials).9 6.4 Number of test specimens9 6.5 Definition of span between specimen supports, L 10 6.6 Conditioning 11 7 Procedure.11 8 Calculation and expression of results 12 8.1 Unnotched specimens 12 8.2 Notched specimens.12 8.3 Statistical parameters .13 8.4 Significan
18、t figures .13 9 Precision.13 10 Test report13 Annex A (informative) Additional methods for investigating the influence of surface effects.15 Annex B (informative) Precision data .17 Annex C (informative) Determining the notch tip radius using a CCD microscope 19 Bibliography22 BS EN ISO 179-1:2010IS
19、O 179-1:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International 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 me
20、mber body interested in a subject for which a technical committee has been 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 E
21、lectrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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 ad
22、opted by the technical committees are circulated to the member bodies for 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 pa
23、tent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 179-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical properties. This second edition cancels and replaces the first edition (ISO 179-1:2000), which has been techn
24、ically revised. The main changes are as follows: a new subclause (6.5) has been added, defining the span between the specimen supports and indicating a convenient position at which it can be measured; a new annex, Annex C, has been added, giving a method of measuring the radius of the notch in a not
25、ched specimen. This second edition also incorporates the Amendment ISO 179-1:2000/Amd.1:2005. ISO 179 consists of the following parts, under the general title Plastics Determination of Charpy impact properties: Part 1: Non-instrumented impact test Part 2: Instrumented impact test BS EN ISO 179-1:201
26、0INTERNATIONAL STANDARD ISO 179-1:2010(E) ISO 2010 All rights reserved 1Plastics Determination of Charpy impact properties Part 1: Non-instrumented impact test 1 Scope 1.1 This part of ISO 179 specifies a method for determining the Charpy impact strength of plastics under defined conditions. A numbe
27、r of different types of specimen and test configurations are defined. Different test parameters are specified according to the type of material, the type of test specimen and the type of notch. 1.2 The method can be used to investigate the behaviour of specified types of specimen under the impact co
28、nditions defined and for estimating the brittleness or toughness of specimens within the limitations inherent in the test conditions. It can also be used for the determination of comparative data from similar types of material. 1.3 The method has a greater range of applicability than that given in I
29、SO 1801and is more suitable for the testing of materials showing interlaminar shear fracture or of materials exhibiting surface effects due to environmental factors. 1.4 The method is suitable for use with the following range of materials: rigid thermoplastic moulding and extrusion materials (includ
30、ing filled and reinforced compounds in addition to unfilled types) and rigid thermoplastics sheets; rigid thermosetting moulding materials (including filled and reinforced compounds) and rigid thermosetting sheets (including laminates); fibre-reinforced thermosetting and thermoplastic composites inc
31、orporating unidirectional or multi-directional reinforcements (such as mats, woven fabrics, woven rovings, chopped strands, combination and hybrid reinforcements, rovings and milled fibres) or incorporating sheets made from pre-impregnated materials (prepregs), including filled and reinforced compou
32、nds; thermotropic liquid-crystal polymers. 1.5 Notched samples are not normally suitable for use with rigid cellular materials, long-fibre-reinforced composites or thermotropic liquid-crystal polymers. In these cases, unnotched samples may be used. 1.6 The method is suited to the use of specimens mo
33、ulded to the chosen dimensions, machined from the central portion of a standard multipurpose test specimen (see ISO 3167) or machined from finished or semifinished products such as mouldings, laminates and extruded or cast sheet. 1.7 The method specifies preferred dimensions for the test specimen. T
34、ests which are carried out on specimens of different dimensions or with different notches, or specimens which are prepared under different conditions, might produce results which are not comparable. Other factors, such as the energy capacity of the apparatus, the impact velocity and the conditioning
35、 of the specimens can also influence the results. Consequently, when comparative data are required, these factors must be carefully controlled and recorded. BS EN ISO 179-1:2010ISO 179-1:2010(E) 2 ISO 2010 All rights reserved1.8 The method should not be used as a source of data for design calculatio
36、ns. Information on the typical behaviour of a material can be obtained, however, by testing at different temperatures, by varying the notch radius and/or the specimen thickness and by testing specimens prepared under different conditions. 2 Normative references The following referenced documents are
37、 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, Plastics Standard atmospheres for conditioning and testing ISO 293, Plastics C
38、ompression moulding of test specimens of thermoplastic materials ISO 294-1, Plastics Injection moulding of test specimens of thermoplastic materials Part 1: General principles, and moulding of multipurpose and bar test specimens ISO 294-3, Plastics Injection moulding of test specimens of thermoplast
39、ic materials Part 3: Small plates ISO 295, Plastics Compression moulding of test specimens of thermosetting materials ISO 1268-11, Fibre-reinforced plastics Methods of producing test plates Part 11: Injection moulding of BMC and other long-fibre moulding compounds Small plates ISO 2602, Statistical
40、interpretation of test results Estimation of the mean Confidence interval ISO 2818, Plastics Preparation of test specimens by machining ISO 3167, Plastics Multipurpose test specimens ISO 10724-1, Plastics Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) Part 1:
41、General principles and moulding of multipurpose test specimens ISO 13802, Plastics Verification of pendulum impact-testing machines Charpy, Izod and tensile impact-testing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 Charpy unnotched impac
42、t strength acUimpact energy absorbed in breaking an unnotched specimen, referred to the original cross-sectional area of the specimen NOTE It is expressed in kilojoules per square metre (kJ/m2). 3.2 Charpy notched impact strength acNimpact energy absorbed in breaking a notched specimen, referred to
43、the original cross-sectional area of the specimen at the notch, where N = A, B or C, depending on the notch type (see 6.3.1.1.2) NOTE It is expressed in kilojoules per square metre (kJ/m2). BS EN ISO 179-1:2010ISO 179-1:2010(E) ISO 2010 All rights reserved 33.3 edgewise impact e direction of blow pa
44、rallel to the dimension b, with impact on the narrow longitudinal surface h l of the specimen (see Figure 1, left, and Figures 2 and 4) 3.4 flatwise impact f direction of blow parallel to the dimension h, with impact on the broad longitudinal surface b l of the specimen (see Figure 1, right, and Fig
45、ures 3 and 4) 3.5 normal impact n laminar-reinforced plastics impact with the direction of blow normal to the plane of reinforcement (see Figure 4) 3.6 parallel impact p laminar-reinforced plastics impact with the direction of blow parallel to the plane of reinforcement (see Figure 4) 4 Principle Th
46、e test specimen, supported near its ends as a horizontal beam, is impacted by a single blow of a striker, with the line of impact midway between the supports, and bent at a high, nominally constant, velocity. In the case of edgewise impact with notched specimens, the line of impact is directly oppos
47、ite the single notch (see Figure 1, left, and Figure 2). 5 Apparatus 5.1 Test machine The principles, characteristics and verification of suitable test machines are detailed in ISO 13802. ISO 13802 describes partial verification and full verification. In the case of full verification, some items are
48、 difficult to verify when the apparatus is assembled. Such verifications are assumed to be incumbent on the manufacturer. 5.2 Micrometers and gauges Micrometers and gauges capable of measuring the essential dimensions of test specimens to an accuracy of 0,02 mm are required. For measuring the dimens
49、ion bNof notched specimens, the micrometer shall have a spindle with a measuring tip having a suitable profile to fit the shape of the notch. BS EN ISO 179-1:2010ISO 179-1:2010(E) 4 ISO 2010 All rights reserveda) Edgewise impact b) Flatwise impact Key 1 direction of blow 2 rod of pendulum 3 test specimen 4 notch 5 support Figure 1 Striking edge and support blocks for type 1 test specimen at moment of impact 6 Test specimens 6.1 Preparation 6.1.1 Moulding and extrusion compounds Spe
