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Testing method for objective evaluation of cross-country ski poles |
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| Authors: | Mikael Swarén Mikael Therell Anders Eriksson Hans-Christer Holmberg |
| Institution: | 1. Department of Health Sciences, Swedish Winter Sports Research Centre, Mid Sweden University, 83125, ?stersund, Sweden 2. Department of Mechanics, Royal Institute of Technology, Stockholm, Sweden 3. Swedish Olympic Committee, Stockholm, Sweden |
| Abstract: | The aim of the study was to develop an objective classification method for cross-country ski poles. A test device was designed to expose different pole models to maximal loading and impact tests. A load cell measured the axial forces in the pole shafts, and a laser distance meter measured shaft deflection when a load was applied via the wrist strap. In the loading tests, each shaft reached a plateau where no more force could be transferred. This maximal force transfer (MFT) value was a characteristic measure for flexural rigidity and thereby also strength. The developed test method enables a loading that is more similar to real-life skiing than a standard three-point bending test. Results show that the introduction of shaft indices for buckling strength is beneficial for comparison purposes. The MFT is a relevant parameter used in the characterization of poles. |
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