Development of a test methodology for the assessment of human impacts in sport
- Publication Type:
- Conference Proceeding
- Procedia Engineering, 2012, 34 pp. 813 - 818
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The study described in this paper aims to develop a suitable method for the measurement of contact forces, pressures and velocities of simulated human-on-human impacts typical of those experienced within American Football. A thin-film pressure sensor system was chosen to enable the impacts to be quantified, however, initial testing suggested that the measured impact forces were underestimated by circa 30% with the system calibrated in the standard, static pressure manner. A two-stage, dynamic calibration was therefore developed, in which the sensors were subsequently dynamically loaded in a manner more representative of the impacts, allowing an appropriate dynamic calibration factor to be derived. To determine the typical impact force levels experienced in a shoulder-on-thigh impact event, eight subjects were required to perform three "good" tackles at two different velocities. The processed results identified a peak, transmitted force of 1.1 (0.4) and 1.7 (0.5) kN for "low" and "medium" velocities respectively, with corresponding effective areas of application of 70 (22) cm2and 85 (25) cm2and contact times of 0.257 (0.098) s and 0.245 (0.112) s respectively. © 2012 Published by Elsevier Ltd.
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