BS ISO 24334:2019 pdf free.Laminate floor coverings – Determination of locking strength for mechanically assembled panels.
The test atmosphere shall be (50土5) % relative humidity (RH) and (23土2) °C unless the test is completed within 60 min of removal of the test specimens from the conditioning atmosphere. The pulling direction shall be perpendicular to the lock in a coplanar direction of the specimen. .The coplanar guiding of the clamping devices is to be adjusted with the calibration plate. Assemble the grippers in the clamping devices. Fix the calibration plate in the gripper of the upper clamping device. Adjust the lower clamping device with the help of the calibration plate to the upper clamping device.For the short side testing, first attach the clamp to A1 (in attachment area F1). When attaching the clamp to B1 (attachment area F2), ensure that there is no added stretch or pull. Therefore, the tensile- testing-machine has to have a zero-force adjustment control software installed to avoid the additional force resulting from clamping the specimen. If the width of the specimen is smaller than 210 mm, attach the specimen in the vertical centreline of the gripper perpendicular to the attachment areas, no more than 200 mm apart. Adjust the external extensometer (or optical measurement) in the vertical centreline of the test specimen as close as possible to the joint.If two or more of the five results in a test series are outside the tolerance of repetition either for Fmax, Fo,2 or for Δs, five completely new tests shall be carried out and checked for validity in the same way as the first ones. The new results shall be checked for validity in the same way as the first ones. The procedure shall be repeated until five test specimens give valid results. If more than three complete test series are indicated to be needed to achieve results within the tolerance of repetition, the test shall be interrupted and considered not possible to finish.BS ISO 24334 pdf download.