BS ISO 6003:2017 pdf download – Alpine skis — Determination of mass and polar moment of inertia — Laboratory measurement method 2 Normative references There are no normative references in this document. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at https://www.iso.org/obp 3.1 mass of ski m mass of a finished manufactured ski without any mounted parts Note 1 to entry: Expressed in kilograms. 3.2 polar moment of inertia I mass moment of inertia of the ski about its centre of gravity Note 1 to entry: The unit used to express the polar moment of inertia is the kilogram metre squared. 4 Apparatus 4.1 Weighing device, accurate to ±0,02 kg. 4.2 Fulcrum, for locating the centre of gravity of the ski. 4.3 Time measurement device (stop watch), accurate to at least 0,1 s. 4.4 Measuring device in accordance with Figure 1, consisting of the following parts. 4.4.1 Clamping device A (see Figure 1), consisting of two clamping fixtures. The top clamping fixture has a hole with a mark to locate the centre of gravity and a further two holes at a distance e from the centre mark for fixation of the filaments B. The recommended dimension for, e, is 25 mm and the mass of the clamping device shall be less than 0,1 kg. 4.4.2 Top plate C, with two holes separated by the distance 2d f ; for the fixation of filaments B. The plate C shall be fixed on a stiff, horizontal beam. 4.4.3 Two filaments B, with equal length, l, which connect the top plate with the clamping device. The ratio d f :l shall be approximately 1:40. With the recommended dimension d f = 25 mm, the length, l, shall be 1 000 mm. The filaments shall be made of materials with low elongation and high strength (for example, tennis string, silk fishing line). The diameter of the filaments shall be not more than 1,0 mm. 5 Sampling and conditioning 5.1 In order to ensure comparability, it is recommended to use one of the following ski sizes if data of measurements are published: — 150 cm, 165 cm or 180 cm. From these three sizes, the one which is most representative for...
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