Evaluation of the blunt thoracic trauma due to baseball impacts – review of the Blunt Criterion

Thota, Narasimha M. and Epaarachchi, Jayantha A. and Lau, Kin Tak (2014) Evaluation of the blunt thoracic trauma due to baseball impacts – review of the Blunt Criterion. In: 8th Australasian Congress on Applied Mechanics, 24-26 Nov 2014, Melbourne, Australia.

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Abstract

Evaluation of the thoracic injury due to blunt impacts during the contact and collision sports activity is crucial for the development and validation of the chest protectors and safety solid sports for the athletes. In the case of young athletes, proper chest protectors can avoid not only severe chest trauma but also protect them from the sudden death due to commotio-cordis. In order to evaluate the thoracic injury in terms of known engineering parameters (Viscous Criterion), non-linear finite element simulations were carried out by impacting FE model of the thorax surrogate (MTHOTA- Mechanical THOrax for Trauma Assessment) with a synthetic baseball and a synthetic baseball of the same size and weight at the impact speed of 10 – 45 m/s (with an increment of 5 m/s). Synthetic baseball and soft-core baseball produced VCmax = 1 m/s at the impact speed of 27.9 m/s and 30.7 m/s respectively. For both sports ball impact cases, Blunt Criterion (which is commonly used as non-lethal munitions design criterion that takes only kinetic energy of the projectile and weight & geometry of the thorax into consideration) was evaluated for all impact cases of two types of baseballs. Results have revealed the projectile specificity of the Blunt Criterion.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: No indication of copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 21 Feb 2015 07:16
Last Modified: 05 Jul 2017 00:10
Uncontrolled Keywords: collision and contact sports, baseball, viscoelasticity, MTHOTA, thoracic injury, viscous criterion, blunt criterion
Fields of Research : 09 Engineering > 0903 Biomedical Engineering > 090302 Biomechanical Engineering
Socio-Economic Objective: A Defence > 81 Defence > 8101 Defence > 810104 Emerging Defence Technologies
URI: http://eprints.usq.edu.au/id/eprint/26502

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