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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한의용생체공학회 Biomedical Engineering Letters (BMEL) Biomedical Engineering Letters (BMEL) Vol.5 No.4
- 발행연도
- 2015.1
- 수록면
- 281 - 288 (8page)
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Purpose The role of ear canal in transmitting blast waves tothe brain is not clear. The goal of this work is to characterizethe influence of ear canal on blast-induced mild traumaticbrain injury through a computational approach. Methods A three-dimensional human head model withsingle-side ear canal details was reconstructed from computedtomography images. The ear canal was positioned eitherfacing the incident blast wave or facing away from the blastwave. Results The blast wave-head interaction has demonstratedthat the overpressure within the ear canal was substantiallyamplified when the ear directly faced the blast wave. Whenit faced away from the blast wave, the overpressure withinthe ear canal was less than the actual incident blast pressure. Regardless of the substantial pressure differences within theear canal induced by the blast wave, the resulting intracranialpressures were almost the same for both cases. Conclusions The blast wave-head interaction has demonstratedthat the role of the ear canal in brain dynamics, and thusbrain injury, was negligible. However, the peak overpressurewithin the ear canal exceeded the documented tympanicmembrane rupture and inner ear damage thresholds. Thiswas speculated to cause the degeneration of axons along theauditory pathway up to the midbrain. This work providedfundamental understanding of the load transmission throughthe ear canal and could serve as a platform for designingbetter protective armors.
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참고문헌 (27)
참고문헌 신청
Warden D / 2006 / Military TBI during the Iraq and Afghanistan wars / J Head Trauma Rehabit 21(5):398~402
Kleinschmit NN / 2011 / A shock tube technique for blast wave simulation and studies for flow structure interactions in shock tube blast experiments
William C. Moss / 2009 / Skull Flexure from Blast Waves: A Mechanism for Brain Injury with Implications for Helmet Design / Physical Review Letters 103(10)
Courtney AC / 2009 / A thoracic mechanism of mild traumatic brain injury due to blast pressure waves / Med Hypotheses 72(1):76~83
Yi Hua / 2014 / Experimental and Numerical Investigation of the Mechanism of Blast Wave Transmission Through a Surrogate Head / Journal of Computational and Nonlinear Dynamics 9(3):031010
Kleinschmit NN / 2011 / A shock tube technique for blast wave simulation and studies for flow structure interactions in shock tube blast experiments
William C. Moss / 2009 / Skull Flexure from Blast Waves: A Mechanism for Brain Injury with Implications for Helmet Design / Physical Review Letters 103(10)
Courtney AC / 2009 / A thoracic mechanism of mild traumatic brain injury due to blast pressure waves / Med Hypotheses 72(1):76~83
Yi Hua / 2014 / Experimental and Numerical Investigation of the Mechanism of Blast Wave Transmission Through a Surrogate Head / Journal of Computational and Nonlinear Dynamics 9(3):031010
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