1、January 2011 Translation by DIN-Sprachendienst.English price group 8No 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
2、 79.080!$m,D“1740933www.din.deDDIN EN 1534Wood flooring Determination of resistance to indentation Test methodEnglish translation of DIN EN 1534:2011-01Holzfubden Bestimmung des Eindruckwiderstands PrfmethodeEnglische bersetzung von DIN EN 1534:2011-01Planchers en bois Dtermination de la rsistance a
3、u poinonnement Mthode dessaiTraduction anglaise de DIN EN 1534:2011-01SupersedesDIN EN 1534:2000-04www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1101.11 DIN EN 1534:2011-01 A comma is used as the decimal marker. National foreword
4、 This standard has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Working Committee NA 042-01-14
5、AA Rund- und Schnittholz Spiegelausschuss zu CEN/TC 175 und ISO/TC 218. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN (and/or DKE) shall not be held responsible for identifying any or all such patent rights. Amendments This
6、standard differs from DIN EN 1534:2000-04 as follows: a) the title of the standard has been changed; b) the document applies to wood flooring; c) terms and definitions have been supplemented; d) equations have been revised. Previous editions DIN EN 1534: 2000-04 2 EUROPEAN STANDARD NORME EUROPENNE E
7、UROPISCHE NORM EN 1534 October 2010 ICS 79.080 Supersedes EN 1534:2000English Version Wood flooring - Determination of resistance to indentation - Test method Planchers en bois - Dtermination de la rsistance au poinonnement - Mthode dessai Holzfubden - Bestimmung des Eindruckwiderstands - Prfmethode
8、 This European Standard was approved by CEN on 19 September 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-date lists and bibliographical
9、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 under the responsibility of a CEN me
10、mber 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, Greece, Hungary, Iceland, Irela
11、nd, 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 Management Centre: Avenue Marnix 17
12、, 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 1534:2010: EEN 1534:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 55 Apparatus .56 Test specimens 56
13、.1 Dimensions .56.2 Sampling .56.2.1 Within a test specimen 56.2.2 Within a lot 56.3 Conditioning .56.4 Possible preparation prior to testing .67 Test method 67.1 Accuracy .67.2 Application of load.67.3 Measurement of indentation .68 Expression of results 68.1 Hardness for each indentation .68.2 Har
14、dness for a lot 78.2.1 General 78.2.2 Mean value 78.2.3 Standard deviation.78.2.4 Characteristic value .79 Test report 9DIN EN 1534:2011-01 EN 1534:2010 (E) 3 Foreword This document (EN 1534:2010) has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which i
15、s held by AFNOR. 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 April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. Attention is drawn to the possibilit
16、y 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 1534:2000. The main changes compared to the previous edition are : a) Modification in the defi
17、nitions (3.5) and (3.6); b) A new definition has been added “test specimen“ (3.7); c) A new definition has been added “component“ (3.8); d) A new definition has been added “Hardness HB“ (3.9). This document is one of a series of standards concerning wood flooring. According to the CEN/CENELEC Intern
18、al 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembo
19、urg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 1534:2011-01 EN 1534:2010 (E) 4 1 Scope This European Standard specifies a method, derived from the test, for determining the resistance to indentation of wood fl
20、ooring. 2 Normative references The following 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. EN 13756:2002, Woo
21、d flooring Terminology 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13756:2002 and the following apply. 3.1 element smallest individual part (e.g. a finger, a strip) of wood flooring 3.2 lot quantity of wood flooring with the same claimed set of fe
22、atures, within a consignment or in a storage facility 3.3 lay-up description of the assembly of an element 3.4 indentation concave deformation of the surface of a test specimen from the action of an indenter 3.5 indentation under action momentarily indentation when the indenter is applied 3.6 residu
23、al indentation indentation after the time of recovery NOTE The time of recovery is specified in 7.3. 3.7 test specimen elements or square test piece cut from an element 3.8 component piece of wood flooring with a face consisting of originate solid timber 3.9 Hardness HB Brinell hardness in newtons p
24、er square millimetre DIN EN 1534:2011-01 EN 1534:2010 (E) 5 4 Principle The resistance to indentation is determined by applying a loaded indenter to the face of the test specimen. The diameter of the residual indentation is used to evaluate the resistance to indentation of the test specimen. After t
25、he loading the unloaded specimen is left to recover. 5 Apparatus 5.1 Indenter, i.e. a hardened steel spherical body with contact radius of (10 0,01) mm. 5.2 Measurement rig, i.e. a device capable of measuring the diameter of the residual indentation on the face of the test specimen to an accuracy of
26、 0,1 mm. 5.3 Loading head, i.e. a device with a load cell accurate to 2 % of the maximum applied loads, moving perpendicular to a flat rigid table. The load and the rate of head movement of the loading head shall be adjustable within specified limits. 6 Test specimens 6.1 Dimensions The test shall b
27、e carried out on test specimens that may be elements or may be square test pieces, cut from elements that preferably have sides approximately 50 mm long. 6.2 Sampling 6.2.1 Within a test specimen Indentations shall be carried out either in the central area of test pieces or distributed all over the
28、area of the face of the element. If, in an element, the length of a piece of originate solid timber exceeds 200 mm, up to two indentations can be carried out on that piece of timber. If not, only one indentation can be carried out. The distance from the centre of the indentation to any edge of a tes
29、t piece or an element or to a knot shall not be less than 20 mm. However, if the width of the test specimen is less than 40 mm, the indentation shall be placed along its longitudinal axis. If an element consists of a number of components, each component can be indented. Within the above defined limi
30、ts, the indentation points shall be distributed at random. 6.2.2 Within a lot The number of test specimen to be sampled is related to the number of indentations carried out on each test specimen. It shall be such that the total number of indentations is at least 50. Test specimens shall be selected
31、at random from the lot. 6.3 Conditioning The test shall be carried out on test specimens conditioned in accordance with the manufacturers instructions. DIN EN 1534:2011-01 EN 1534:2010 (E) 6 6.4 Possible preparation prior to testing If the test specimens are fitted with a soft or brittle material on
32、 the back, this shall be removed to prevent any displacement during the test. 7 Test method 7.1 Accuracy All the measurements shall be made to the limits of accuracy specified for the instruments as defined in Clause 5. 7.2 Application of load The test specimen shall be free of any material that may
33、 interfere with the results. Set the test specimen on the table of the loading head. Lower the indenter to the surface of the test specimen. Apply a force increasing at such rate that the nominal value of 1 kN is reached after (15 3) s. Maintain the force at this value for (25 5) s. Withdraw the ind
34、enter completely. Throughout the test, the machinery shall be vibration and shock free, to ensure that the sample is rigidly held. 7.3 Measurement of residual indentation After withdrawal of the indenter, wait (let recover) for at least 3 min. Measure with the measurement rig two diameters of the re
35、sidual indentation at right angles to each other: one along the grain d1, another across the grain d2, with an accuracy of 0, 2 mm. Contrast on the edge of the indentation can be improved with appropriate lighting and/or application of graphite lead. 8 Expression of results 8.1 Hardness for each ind
36、entation The hardness Brinell HB is calculated to two significant digits, according to the following formula: .2dDDDgFHB=(1) where HB is the Brinell hardness in kilogram force per square millimetre; g is the acceleration of gravity, in metres per second squared; is the “pi“ factor (3,14); F is the m
37、aximum load applied force, in newtons; D is the diameter of the ball, in millimetres, d is the diameter of the residual indentation, in millimetres (average of d1and d2). DIN EN 1534:2011-01 EN 1534:2010 (E) 7 NOTE To express HB in kilogram force per square millimetre divide the value by g. The diam
38、eter of the residual indentation d is calculated from the measurements taken in accordance with 7.3, using the formula: 221 ddd+= (2) 8.2 Hardness for a lot 8.2.1 General A normal distribution is assumed. The mean value, the standard deviation and the characteristics value of the hardness Brinell sh
39、all be calculated. 8.2.2 Mean value nPmni1= (3) where m is the mean value of the performance of the sample; Piis the performance of “ith“ point of indentation in the sample; n is the number of indentations carried out in the sample. 8.2.3 Standard deviation 1)(12=nmPiSn(4) where S is the standard de
40、viation. Piis the performance of “ith“ point of indentation in the sample. All the other parameters are defined in 8.2.2. 8.2.4 Characteristic value A characteristic value is defined as the fifth percentile of the assumed normal distribution. A characteristic value is given by the following formula:
41、 Xk = m (t05 x s) (5) where Xk is the characteristic value; DIN EN 1534:2011-01 EN 1534:2010 (E) 8 t05 is the Student coefficient for a one sided 5 % probability. Table 1 gives the Student coefficient for a range of values of n. All other parameters are defined in 8.2.2 and 8.2.3. Table 1 Student co
42、efficient for a range of values of n Number of indentations n Student coefficient t056 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 40 60 120 2,02 1,94 1,90 1,86 1,83 1,81 1,80 1,78 1,77 1,76 1,75 1,75 1,74 1,73 1,73 1,72 1,72 1,72 1,71 1,71 1,71 1,71 1,70 1,70 1,70 1,68 1,67
43、 1,66 1,645 DIN EN 1534:2011-01 EN 1534:2010 (E) 9 9 Test report The test report shall contain the following information: a) The name and address of the laboratory, b) The name and address of the company requesting the test, c) The sampling procedure and the identification of the sample, d) The date
44、 of delivery, e) The date of period of the test(s), f) The type (the brand, if any) and the full description of the test specimens (lay-up, coating, appearance classification ), face view and cross sections in a suitable scale, g) If relevant, their characteristics at the time of delivery, h) The co
45、nditioning applied to the test specimens prior to testing, i) The climatic conditions within the laboratory during the test, j) The reference to this test method and, if any, the deviations, k) A short description of the apparatus involved in the test, l) Each individual result according to the test method, m) The mean value, the standard deviation of the sampled lot as defined in this standard and the characteristic value of the hardness. DIN EN 1534:2011-01
