1、June 2016 English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 83.120!%V“2512598www.din.deDIN EN 59
2、Glass reinforced plastics Determination of indentation hardness by means of a Barcol hardness tester;English version EN 59:2016,English translation of DIN EN 59:2016-06Glasfaserverstrkte Kunststoffe Bestimmung der Eindruckhrte mit einem Barcol-Hrteprfgert;Englische Fassung EN 59:2016,Englische berse
3、tzung von DIN EN 59:2016-06Matires plastiques renforces de verre Dtermination de la duret par pntration au moyen dun appareil dessai de duret Barcol;Version anglaise EN 59:2016,Traduction anglaise de DIN EN 59:2016-06SupersedesDIN EN 59:1977-11www.beuth.deDTranslation by DIN-Sprachendienst.In case o
4、f doubt, the German-language original shall be considered authoritative.Document comprises 12 pages 05.16 2 A comma is used as the decimal marker. National foreword This document (EN 59:2016) has been prepared by Technical Committee CEN/TC 249 “Plastics” (Secretariat: NBN, Belgium). The responsible
5、German body involved in its preparation was DIN-Normenausschuss Kunststoffe (DIN Standards Committee Plastics), Working Committee NA 054-02-02 AA Verstrkte Kunststoffe und hrtbare Harze. Amendments This standard differs from DIN EN 59:1977-11 as follows: a) the title of the standard has been changed
6、; b) notes and references have been incorporated in the normative text; c) Clause 2 “Normative references” has been updated; d) Clause 3 “Principle” has been included; e) Clause 4 “Apparatus” has been revised; f) Clause 6 has been revised and renamed from “Adjustment” to “Calibration”; g) Clause 7 h
7、as been revised and renamed from “Pretreatment” to “Conditioning and testing atmospheres”; h) Clause 8 “Procedure” has been revised; i) Clause 10 “Test report” has been rendered more precise; j) the standard has been editorially revised. Previous editions DIN EN 59: 1977-11 DIN EN 59:2016-06 EUROPEA
8、N STANDARD NORME EUROPENNE EUROPISCHE NORM EN 59 February 2016 ICS 83.120 Supersedes EN 59:1977English Version Glass reinforced plastics - Determination of indentation hardness by means of a Barcol hardness tester Matires plastiques renforces de verre - Dtermination de la duret par pntration au moye
9、n dun appareil dessai de duret Barcol Glasfaserverstrkte Kunststoffe - Bestimmung der Eindruckhrte mit einem Barcol-Hrteprfgert This European Standard was approved by CEN on 26 December 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
10、 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three
11、 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodi
12、es of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Sp
13、ain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwi
14、de for CEN national Members. Ref. No. EN 59:2016 EEN 59:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Principle . 4 4 Apparatus . 4 5 Test specimens . 6 5.1 Test surface . 6 5.2 Test specimen dimensions. 7 6 Calibration . 7 6.1 Direct calibration 7 6.1.1 Indente
15、r and presser foot 7 6.1.2 Test force 7 6.1.3 Penetration depth . 7 6.2 Verification 8 7 Conditioning and testing atmospheres . 8 8 Procedure. 8 9 Number of measurements . 9 10 Test report . 9 Bibliography . 10 DIN EN 59:2016-06 EN 59:2016 (E) 3 European foreword This document (EN 59:2016) has been
16、prepared by 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 August 2016, and conflicting national standards shal
17、l be withdrawn at the latest by August 2016. 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 patent rights. This document supersedes EN 59:1977. Acco
18、rding 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, Finland, Former Yugoslav Republic of Macedonia, France, Germany
19、, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 59:2016-06 EN 59:2016 (E) 4 1 Scope This European Standard specifies a method for de
20、termining the indentation hardness of glass reinforced plastics materials by means of a Barcol hardness tester. The Barcol hardness tester is a portable device which can be used with a stand. This method is suitable for testing the indentation hardness of individual test specimens or finished produc
21、ts for production control purposes. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the refe
22、renced document (including any amendments) applies. EN ISO 291, Plastics - Standard atmospheres for conditioning and testing (ISO 291) 3 Principle A specified indenter is forced into the test material under specified conditions and the depth of penetration measured. 4 Apparatus 4.1 Barcol hardness t
23、ester 4.1.1 Indenter, formed from a hardened steel truncated cone to the shape shown in Figure 1. The dimensions and their tolerances of the indenter are given in Table 1. It shall fit into a hollow spindle and be held down by a spring. 4.1.2 Presser foot, intended to be placed on the test specimen,
24、 to the shape shown in Figure 1. The dimensions and their tolerances of the presser foot are given in Table 1. DIN EN 59:2016-06 EN 59:2016 (E) 5 Key 1 presser foot 2 indenter a hole diameter of the presser foot c full protrusion of the indenter d diameter of the indenter flat tip f diameter of the
25、presser foot back face angle of the truncated cone of the indenter Figure 1 View of the indenter and presser foot Table 1 Dimensions of the indenter and presser foot Dimension Nominal size Uncertainty of measurement Angle of the truncated cone of the indenter, (26 0,25) 0,07 Hole diameter of the pre
26、sser foot, a (1,0 0,1) mm 0,01 mm Full protrusion of the indenter, c (0,760 0,02) mm 3,0 m Diameter of the indenter flat tip, d (0,157 0,02) mm 3,0 m Diameter of the presser foot back face, f (2,0 1,0) mm 0,05 mm 4.1.3 Force application system, capable to apply a force from 61,10 N to 71,30 N contin
27、uously. This force is applied by a sufficient manual force 80 N from the top cover of the device, even when working with a stand. DIN EN 59:2016-06 EN 59:2016 (E) 6 Key 1 presser foot 2 indenter 3 spring (for spring load, see Table 2) a reference plane Faapplied force, 80 N h penetration depth (0,00
28、0 mm to 0,007 6 mm) Figure 2 Schematic view of a Barcol hardness tester in measurement position 4.1.4 Depth measuring system, connected to the stem of the indenter which allows a penetration in the range of 0,000 mm to 0,760 mm. It is also connected to a display device which indicates the indentatio
29、n hardness of the test specimen in Barcol hardness units. A penetration depth of 0,760 mm is equivalent to 0 Barcol hardness units while a penetration depth of 0,000 mm is equivalent to 100 Barcol hardness units. The scale value of the indicator is 1 Barcol unit per 0,007 6 mm penetration depth. 4.1
30、.5 Feet, capable to support the Barcol hardness tester. 4.1.6 Fixing system, capable to adapt the Barcol hardness tester to a stand (optional). 4.2 Calibrated references plates, made from aluminium. 4.3 Smooth glass plate or hardened steel plate 5 Test specimens 5.1 Test surface The testing area sha
31、ll be smooth and free from mechanical damage (such as scratches or holes). DIN EN 59:2016-06 EN 59:2016 (E) 7 5.2 Test specimen dimensions The thickness of the test specimens shall be at least 1,5 mm. The test area shall be sufficient to have a minimum distance of 3 mm from the test point to the edg
32、es of the test specimen or the previous test point in all directions. 6 Calibration 6.1 Direct calibration 6.1.1 Indenter and presser foot All parameters of the indenter and the presser foot are calibrated according to the tolerances and uncertainties given in Table 1 with appropriate calibration de
33、vices for the measurement of the lengths and the angle. The Barcol hardness tester meets the requirements of this European Standard when the actual values match the target values within the measurement uncertainty. 6.1.2 Test force Perform the calibration of the test force by means of a force measur
34、ing device as a comparison measurement. In this case, the actual values of the nominal values listed in Table 2 are the Barcol hardness unit of the Barcol hardness tester while the force measuring device is used as a reference standard. The Barcol hardness tester meets the requirements of this Europ
35、ean Standard when the actual values match the target values within the measurement uncertainty. Table 2 Calibration of the test load Barcol hardness unit Nominal value of the load N Uncertainty of measurement N 0 61,10 0,29 0,08 20 63,14 0,29 0,08 40 65,18 0,29 0,08 60 67,22 0,29 0,08 80 69,26 0,29
36、0,08 100 71,30 0,29 0,08 6.1.3 Penetration depth Perform the calibration of the depth by means of a length measuring device as a comparison measurement. The actual values of the nominal values given in Table 3 are the Barcol hardness units of the Barcol hardness tester while the length measuring dev
37、ice is used as a reference standard. The Barcol hardness tester meets the requirements of this European Standard when the actual values match the target values within the measurement uncertainty. DIN EN 59:2016-06 EN 59:2016 (E) 8 Table 3 Calibration of penetration depth Barcol hardness unit Nominal
38、 value of penetration depth mm Uncertainty of measurement m 0 0,760 0,020 3,0 20 0,608 0,020 3,0 40 0,456 0,020 3,0 60 0,304 0,020 3,0 80 0,152 0,020 3,0 100 0,000 0,020 3,0 6.2 Verification Check the device by a measurement on a glass plate or a hardened steel plate so as to obtain a reading of 100
39、 on the display. In addition the calibrated reference plates made of aluminium are used for verification. These reference plates shall be calibrated in a calibration laboratory. The deviation of a measurement on a reference plate is limited to a maximum of 2 Barcol units. The deviation of a measurem
40、ent with the Barcol tester shall be maximum 1 Barcol unit. The deviation due to the reference plate and the deviation due to measurement with the Barcol tester are cumulative (so the overall deviation is maximum 3 Barcol units). 7 Conditioning and testing atmospheres 7.1 Condition the test specimens
41、 before testing in the atmosphere specified in the relevant material specification. If no material specification exists, condition the test specimens in one of those specified in EN ISO 291. For testing in the standard atmosphere of (23 2) C/(50 2) % RH, a conditioning time of 16 h may be selected.
42、7.2 Carry out the test in one of the standard atmospheres specified in EN ISO 291, unless otherwise specified in the relevant material specification. When conditioning and testing in the specified standard conditions is not possible, this shall be stated in the test report. 8 Procedure 8.1 Place the
43、 test specimen on a stable and hard surface that it cannot be bent or deformed under the pressure of the Barcol hardness tester. Curved surfaces can cause difficulties for placing the Barcol hardness tester properly. While the pressure is applied, the deflection or jerking stress of the test specime
44、n should be avoided. 8.2 Position the Barcol hardness tester with the feet or by using a test stand so that the presser foot is positioned straight above the specimen. DIN EN 59:2016-06 EN 59:2016 (E) 9 The penetration of the indenter shall occur only when the indenter is perpendicular to the surfac
45、e of the test specimen. In case of a small test specimen, it may be necessary to fit the Barcol hardness tester with one or two support feet so that the indenter can be positioned straight above the test specimen. Impressions should not be made within 3 mm of the edge of the specimen or of other imp
46、ressions. 8.3 Apply by hand a large and quick force, preferably 80 N, on the top cover of the Barcol hardness tester while the highest number on the display unit is recorded, preferably within 1 s after applying the force. The time period of 1 s starts as soon as the indenters movement exceeds 5 Bar
47、col units. A slow fall in the reading on the indicating dial is sometimes noted for materials which are susceptible to creep. It is particularly important for such materials to record the highest instantaneous reading on the indicating dial. A sliding of the indenter on the test surface during the t
48、est shall be avoided. NOTE For materials which are subject to deformation and cannot be fully restored, fluctuations can occur on the display during the measurement In such cases, it is important to detect the maximum value on the display. An automatic registration of time and indentation depth at a
49、 sufficient data collection frequency with an analysis algorithm may be used to calculate the initial hardness value. Registration of time dependence indentation depth offers the possibility to analyse and quantify the creep effects. 9 Number of measurements Reinforced plastics materials are inherently heterogeneous and a large scatter of readings is observed. This is mainly caused by the difference
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