Measuring the inertial properties of a tennis racket
Deutscher übersetzter Titel: | Die Messung der Trägheitseigenschaften eines Tennisschlägers |
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Autor: | Spurr, James; Goodwill, Simon; Kelley, John; Haake, Steve |
Erschienen in: | Procedia engineering |
Veröffentlicht: | 2014, 72 (The Engineering of Sport 10), S. 569-574, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1877-7058 |
DOI: | 10.1016/j.proeng.2014.06.098 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201703001566 |
Quelle: | BISp |
Abstract des Autors
Simple and bifilar pendulum were used to measure the mass moments of inertia of three tennis rackets. The pendulum setups
were filmed using an off-the-shelf camcorder, with a stopwatch in view to provide timing data. The measurement accuracy was
assessed using calibration rods of known mass moment of inertia. The simple pendulum method was found to be most accurate
(<1.0 % difference to theoretical value) when a square profile rod was used as a pivot. The bifilar pendulum was found to be
very accurate (0.0% difference to theoretical value) but sensitive to non-parallel support wires. A Babolat Racket Diagnostic
Centre (RDC) was assessed using four calibration rods, of known mass moment of inertia. Measurement agreement was greater
than 99.0% for mass moments of inertias within the range of 220 – 380 kg·cm2.