1、BSI Standards PublicationBS EN 59:2016Glass reinforced plastics Determination of indentationhardness by means of a Barcolhardness testerBS EN 59:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 59:2016. Itsupersedes BS 2782-10:Method 1001:1977 which is withd
2、rawn.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 request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users
3、are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 85155 1ICS 83.120Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStan
4、dards Policy and Strategy Committee on 29 February 2016.Amendments issued since publicationDate Text affectedBS EN 59:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN 59 February 2016 ICS 83.120 Supersedes EN 59:1977English Version Glass reinforced plastics - Determination of indentation hard
5、ness by means of a Barcol hardness tester Matires plastiques renforces de verre - Dtermination de la duret par pntration au moyen dun appareil dessai de duret Barcol Glasfaserverstrkte Kunststoffe - Bestimmung der Eindruckhrte mit einem Barcol-Hrteprfgert This European Standard was approved by CEN o
6、n 26 December 2015. 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-date lists and bibliographical references concerning such national standards
7、may be obtained on application to the CEN-CENELEC 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 under the responsibility of a CEN member into its own language and notifie
8、d to the CEN-CENELEC 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Icela
9、nd, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Manage
10、ment Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 59:2016 EBS EN 59:2016EN 59:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Principle . 4 4 App
11、aratus . 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 Indenter 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 me
12、asurements . 9 10 Test report . 9 Bibliography . 10 BS EN 59:2016EN 59:2016 (E) 3 European foreword This document (EN 59:2016) has been 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 stand
13、ard, either by publication of an identical text or by endorsement, at the latest by August 2016, and conflicting national standards shall 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. C
14、EN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 59:1977. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austri
15、a, 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, Spain, Sweden,
16、 Switzerland, Turkey and the United Kingdom. BS EN 59:2016EN 59:2016 (E) 4 1 Scope This European Standard specifies a method for determining 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
17、 be used with a stand. This method is suitable for testing the indentation hardness of individual test specimens or finished products for production control purposes. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensabl
18、e for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 291, Plastics - Standard atmospheres for conditioning and testing (ISO 291) 3 Principle A specified indenter i
19、s forced into the test material under specified conditions and the depth of penetration measured. 4 Apparatus 4.1 Barcol hardness tester 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
20、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, to the shape shown in Figure 1. The dimensions and their tolerances of the presser foot are given in Table 1. BS EN 59:2016EN 59:2016 (E) 5 Key 1 presser foot 2 indente
21、r a hole diameter of the presser foot c full protrusion of the indenter d diameter of the indenter flat tip f diameter of the 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 Dimensio
22、n Nominal size Uncertainty of measurement Angle of the truncated cone of the indenter, (26 0,25) 0,07 Hole diameter of the presser foot, a (1,0 0,1) mm 0,01 mmFull 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 f
23、oot back face, f (2,0 1,0) mm 0,05 mm4.1.3 Force application system, capable to apply a force from 61,10 N to 71,30 N continuously. This force is applied by a sufficient manual force 80 N from the top cover of the device, even when working with a stand. BS EN 59:2016EN 59:2016 (E) 6 Key 1 presser fo
24、ot 2 indenter 3 spring (for spring load, see Table 2) a reference plane Faapplied force, 80 N h penetration depth (0,000 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 pe
25、netration in the range of 0,000 mm to 0,760 mm. It is also connected to a display device which indicates the indentation 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 equivalen
26、t to 100 Barcol hardness units. The scale value of the indicator is 1 Barcol unit per 0,007 6 mm penetration depth. 4.1.5 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, mad
27、e from aluminium. 4.3 Smooth glass plate or hardened steel plate 5 Test specimens 5.1 Test surface The testing area shall be smooth and free from mechanical damage (such as scratches or holes). BS EN 59:2016EN 59:2016 (E) 7 5.2 Test specimen dimensions The thickness of the test specimens shall be at
28、 least 1,5 mm. The test area shall be sufficient to have a minimum distance of 3 mm from the test point to the edges of the test specimen or the previous test point in all directions. 6 Calibration 6.1 Direct calibration6.1.1 Indenter and presser foot All parameters of the indenter and the presser f
29、oot are calibrated according to the tolerances and uncertainties given in Table 1 with appropriate calibration devices 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 t
30、he measurement uncertainty. 6.1.2 Test force Perform the calibration of the test force by means of a force measuring 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
31、measuring device 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. Table 2 Calibration of the test load Barcol hardness unit Nominal value of the load N Uncer
32、tainty of measurement N 0 61,10 0,29 0,08 20 63,14 0,29 0,08 40 65,18 0,29 0,0860 67,22 0,29 0,08 80 69,26 0,29 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 va
33、lues given in Table 3 are the Barcol hardness units of the Barcol hardness tester while the length measuring device 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 uncer
34、tainty. BS EN 59:2016EN 59:2016 (E) 8 Table 3 Calibration of penetration depth Barcol hardness unit Nominal 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 Ch
35、eck the device by a measurement on a glass plate or a hardened steel plate so as to obtain a reading of 100 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 o
36、f a measurement on a reference plate is limited to a maximum of 2 Barcol units. The deviation of a measurement 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 de
37、viation is maximum 3 Barcol units). 7 Conditioning and testing atmospheres 7.1 Condition the test specimens 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. Fo
38、r testing in the standard atmosphere of (23 2) C/(50 2) % RH, a conditioning time of 16 h may be selected. 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 specif
39、ied standard conditions is not possible, this shall be stated in the test report. 8 Procedure 8.1 Place the 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 ha
40、rdness tester properly. While the pressure is applied, the deflection or jerking stress of the test specimen 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. BS EN 59:2016EN 59:2016 (
41、E) 9 The penetration of the indenter shall occur only when the indenter is perpendicular to the surface 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
42、 test specimen. Impressions should not be made within 3 mm of the edge of the specimen or of other impressions. 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 a
43、fter applying the force. The time period of 1 s starts as soon as the indenters movement exceeds 5 Barcol 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 in
44、stantaneous reading on the indicating dial. A sliding of the indenter on the test surface during the test 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
45、 detect the maximum value on the display. An automatic registration of time and indentation depth at a 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 anal
46、yse 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 differences in hardness between the resin and the reinforcement material in contact with the small diamete
47、r indenter. The number of measurements shall be such that the average result has a standard deviation of 4 % (at a 95 % probability level). 10 Test report The test report shall include the following information: a) a reference to this European Standard (i.e. EN 59); b) all details necessary for iden
48、tification of the material tested; c) a detailed description of the test specimen (5.2); d) conditioning and testing conditions (Clause 7); e) the number of measurements; f) the mean value of the indentation hardness rounded to the nearest whole integer; g) the date of testing. BS EN 59:2016EN 59:20
49、16 (E) 10 Bibliography ASTM D2583-13A, Standard Test Method for Indentation Hardness of Rigid Plastics by Means of a Barcol Impressor This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and other standardization products are published by BSI Standards Limited.British Standards Institution (BSI)BSI Group Headquarters389 Chiswic
