ISO INTERNATIONAL STANDARD 16984 First edition 2003-05-15 Wood-basedpanelsDeterminationof tensile strength perpendicular to the plane of the panel Panneauxabasedebois-Determinationdelaresistanceala traction perpendiculaireauxfacesdupanneau Reference number ISO 16984:2003(E) ISO @ISO2003 ISO16984:2003(E) Foreword 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 member body interested in a subject for which a technical committee has been tionalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the IsO/lEC Directives, Part 2 The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Interna. tional 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 patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 16984 was prepared by Technical Committee ISO/TC 89,Wood-based panels.ISO 16984 is based on EuropeanStandardEN319. @ISo2003-Allrights reserved ii INTERNATIONAL STANDARD ISO16984:2003(E) Wood-based panels Determination of tensile strength perpendicular to the plane of the panel 1 Scope This International Standard specifies a method for determining the resistance to tension perpendicular to the plane of the panel, also known as "internal bond, of particleboards, OsB, fibreboards, and cement-bonded particleboards. 2 Normativereferences ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso9424,Wood-basedpanels-Determinationofdimensionsoftestpieces iso16999,Wood-basedpanels-Samplingandcuttingoftestpieces Principle Determination of resistance to tension perpendicular to the surface of the test piece by submitting the latter to panel is determined by the maximum load in relation to the surface area of the test piece. 4 Apparatus 4.1 Sliding caliper, as specified in ISO 9424. Testing machine, capable of applying a tensile force perpendicular to the surfaces of the test piece by aligning. 4.3 Test blocks, of metal, hardwood or hardwood plywood, compatible with the fixing device, to which the than 600 kg/m3. 5 Testpieces 5.1 Sampling Sampling and cutting of the test pieces shall be carried out according to IsO 16999 @ ISO 2003 — All rights reserved 1 ISO16984:2003(E) Dimensions inmillimetres 50 50 50 ≥80 1 max. 1 max. Key metal testing block 2 testing block (metal, hardwood or hardwood plywood) 3 hardwood-plywood testing block (not suitable for thin panels) 4 test piece self-aligning ball-and-socket joint 5 t≥15mm Figure1Examplesofapparatusfortestingtensilestrengthperpendiculartotheplaneofthepanel 5.2Dimensions The test pieces shall be square with a side length of (50 ± 1) mm. The test pieces shall be cut with precision, the angles shall be 9o°and the edges shall be straight and clean. 5.3（ Conditioning Thetestpiecesandthe hardwood,orhardwood-plywood,testingblocksshall beconditionedtoconstantmass ina standard climate of(20±2)°Candrelative humidityof(65±5)%.Constant mass of the testpieces is considered as having been reached when the results of two successive weighing operations, carried out at an interval of 24 h, do not differ by more than 0,1 % of the mass of the test piece. 2 Iso 2003—All rights reserved ISO16984:2003(E) In some cases, for instance in a cyclic test in humid conditions or in an immersion-in-water test, alternative lowed. 5.4Determinationof dimensions After conditioning, measure the length and width of each test piece