1、February 2009DEUTSCHE NORM English price group 8No part of this standard 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 79.060.99!$V)$“1510601
2、www.din.deDDIN EN 13354Solid wood panels (SWP) Bonding quality Test methodEnglish version of DIN EN 13354:2009-02Massivholzplatten (SWP) Qualitt der Verklebung PrfverfahrenEnglische Fassung DIN EN 13354:2009-02SupersedesDIN CEN/TS 13354:2003-09www.beuth.deDocument comprises 12 pagesDIN EN 13354:2009
3、-02 2 National foreword This standard has been prepared by Technical Committee CEN/TC 112 “Wood-based panels” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Technical Com
4、mittee NA 042-02-15 AA Spiegel-ausschuss zu CEN/TC 112 und ISO/TC 89 Holzwerkstoffe. Amendments This standard differs from DIN CEN/TS 13354:2003-09 as follows: a) The form of the deliverable has been changed from CEN/TS to EN. b) The vacuum impregnation in subclause 6.1 has been deleted. Previous ed
5、itions DIN CEN/TS 13354: 2003-09 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13354November 2008ICS 79.060.99 Supersedes CEN/TS 13354:2003 English VersionSolid wood panels (SWP) - Bonding quality - Test methodBois panneauts (SWP) - Qualit du collage - MthodedessaiMassivholzplatten (SWP) - Quali
6、tt der Verklebung -PrfverfahrenThis European Standard was approved by CEN on 18 October 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date
7、lists and bibliographical references concerning such nationalstandards 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 translationunder the res
8、ponsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Ice
9、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Sta
10、ssart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13354:2008: EEN 13354:2008 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Principle 4 4 Test pieces .5 4.1 Sampling .5 4.2 Form and d
11、imensions of test pieces.6 5 Apparatus .7 6 Pre-treatment of test pieces .8 6.1 General 8 6.2 Type and duration of pre-treatment .8 7 Testing procedure9 8 Calculation and expression of results .9 9 Test report . 10 DIN EN 13354:2009-02 EN 13354:2008 (E) 3 Foreword This document (EN 13354:2008) has b
12、een prepared by Technical Committee CEN/TC 112 “Wood-based panels”, the secretariat of which is held by DIN. 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 May 2009, and conflicting national stan
13、dards shall be withdrawn at the latest by May 2009. 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 CEN/TS 13
14、354:2003. Compared to CEN/TS 13354:2003 the following changes have been made: a) deliverability changed from CEN/TS to EN; b) vacuum impregnation in 6.1 deleted. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
15、this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and t
16、he United Kingdom. DIN EN 13354:2009-02 EN 13354:2008 (E) 4 1 Scope This European Standard specifies a test method for determining the bonding quality of single-layer and multi-layer solid wood panels by a shear test. 2 Normative references The following referenced documents are indispensable for th
17、e 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 314-1, Plywood Bonding quality Part 1: Test methods EN 326-1, Wood-based panels Sampling, cutting and ins
18、pection Part 1: Sampling and cutting of test pieces and expression of test results EN 1995-1-1, Eurocode 5 Design of timber structures Part 1-1: General Common rules and rules for buildings EN 13353, Solid wood panels (SWP) Requirements 3 Principle Test pieces of single and multi-layer solid wood pa
19、nels are subjected to a pre-treatment, according to the service class as defined in EN 1995-1-1, and then strained to failure by a compressive shear force. The shear strength is calculated and the cohesive wood failure of the shear area is determined. DIN EN 13354:2009-02 EN 13354:2008 (E) 5 4 Test
20、pieces 4.1 Sampling From multi layer solid wood panels a series of at least 10 test pieces shall be cut from each panel to be tested. When cutting the sample strips the cutting plan should provide test pieces from both near the edge of the board and from the centre (see Figure 1). The test pieces sh
21、all be free of defects (e. g. knots). In case of single layer solid wood panels at least 10 glue lines shall be tested. Key 1 grain direction of outer layer 2 sample strip 3 test piece Figure 1 Example for cutting plan for test pieces of a multi-layer solid wood panel DIN EN 13354:2009-02 EN 13354:2
22、008 (E) 6 4.2 Form and dimensions of test pieces 4.2.1 Single-layer solid wood panels The shape and dimensions of the test pieces shall be as shown in Figure 2. Dimensions in millimetres Key t panel thickness h height of test piece: 50 mm b shear width: 25 mm sf width of saw cuts ( 3 mm) Figure 2 Ex
23、ample for cutting plan and test pieces for single layer solid wood panels (only two of ten necessary pieces shown) 4.2.2 Multi-layer solid wood panels The form and dimensions of test pieces shall be as shown in Figure 3. For solid wood panels with three layers half the test pieces shall have the saw
24、 cuts in face A, and the remainder shall have the saw cuts in face B (see Figure 3 a). For solid wood panels with more than three layers, at least 2 test pieces for each glue line shall be tested. DIN EN 13354:2009-02 EN 13354:2008 (E) 7 The saw cuts shall be parallel, exactly sawn and shall penetra
25、te to the glue line. a) three layer solid wood panels b) five layer solid wood panel Key 1 grain direction of the layer at the bottom of the saw cuts 2 grain direction of outer layer l shear length and length of test piece: 50 mm h height of test piece: 40 mm b shear width: 10 mm sf width of saw cut
26、s ( 3 mm) t panel thickness = test piece thickness Figure 3 Test pieces from multi-layer solid wood panel 5 Apparatus Compression testing machine fitted with a shearing tool. Either of the following types is suitable: a) machine, capable of maintaining a constant rate of loading; or b) machine with
27、a constant cross head speed. The accuracy of the measurement of the ultimate load shall be better than 2 %. Thermostatically controlled water bath suitable for immersing test pieces and capable of maintaining a temperature of (20 3) C. Boiling tank enabling the test piece to be immersed in boiling w
28、ater. Ventilated drying oven capable of maintaining a temperature of (60 3) C at all points. Shearing tool as shown in Figure 4. DIN EN 13354:2009-02 EN 13354:2008 (E) 8 Key F force 1 test piece 2 loading block with cylindrical bearing 3 side support against tilt over of the test piece 4 spindle 5 s
29、pring 6 base plate 7 shear bar Figure 4 Adjustable shearing tool with test piece in position (side view of loading block with cylindrical bearing) 6 Pre-treatment of test pieces 6.1 General After cutting the test pieces (see 4.2), subject them to the appropriate pre-treatment according to the use in
30、 dry, humid or exterior conditions. 6.2 Type and duration of pre-treatment Type and duration of pre-treatment depending on the intended end-use environment (dry, humid or exterior) are shown in Table 1. DIN EN 13354:2009-02 EN 13354:2008 (E) 9 Table 1 Pre-treatment for single and multi-layer solid w
31、ood panels intended for use in dry, humid or exterior conditions Short term according to EN 13353 Pre-treatmentIntended use 1 2 3 SWP/1 Dry conditions 24 h in water (20 3)C aaSWP/2 Humid conditions a6 h boiling in water, min. 1 h cooling in water (20 3)C aSWP/3 Exterior conditions aa4 h boiling in w
32、ater (16 to 20) h drying (60 3)C 4 h boiling in water 1 h cooling in water (20 3)C aNot applicable 7 Testing procedure Determine the length and width of the shear area before pre-treatment to an accuracy of 0,1 mm. Position the test piece in the shearing tool as shown in Figure 4. The shearing force
33、 shall be applied parallel to the glue line under test. Apply a constant rate of motion or load so that failure occurs within approximately (60 30) s. It shall be ensured that the test piece is loaded evenly. Further, it has to be seen that friction at the side support of the test piece is marginal.
34、 When adjusting the shear bar, no clamping forces shall be put on the test piece. Make sure that there is no strain on the middle layer from inexact cuts. Record the maximum load at failure to the nearest 10 N. Determine the apparent cohesive wood failure percentage value of the shear area in accord
35、ance with EN 314-1. 8 Calculation and expression of results The shear strength fv(in N/mm2) of each test piece is calculated from the following equation: ()blFf = /vwhere: F is the maximum load of the test piece, in Newton; l is the length of the shear area, in millimetres; b is the width of the she
36、ar area, in millimetres. Calculate the mean shear strength fv, meanand the standard deviation according to EN 326-1. Calculate the mean cohesive wood failure percentage with two significant digits. DIN EN 13354:2009-02 EN 13354:2008 (E) 10 9 Test report The test report shall give at least the follow
37、ing information: a) sampling procedure (date and place of sampling, declaration of random sampling, present persons, cutting plan etc.); b) specification of the panels to be tested and the intended use (dry, humid or exterior) according to EN 13353 respectively, type of glue; c) sizes of the test pi
38、ece; d) details of pre-treatment (see clause 6); e) for each test piece: Shear strength, apparent cohesive wood failure percentage of the shear area; f) for each panel: Mean value of shear strength and cohesive wood failure percentage calculated according to EN 326-1; g) for the test sample: Mean va
39、lue of shear strength and cohesive wood failure percentage and 5 percentile value of shear strength calculated according to EN 326-1; h) relevant observation made during or after testing; i) signature of the person responsible for the testing. NOTE It is not necessary to register and to file directly the information mentioned in items c) to e), if other data are filed from which the information can be derived. DIN EN 13354:2009-02
