exploring feasibility of a newly designed composite face...
TRANSCRIPT
13th Australasian Injury Prevention and Safety Promotion Conference 1
Exploring Feasibility of
a Newly Designed Composite Face Shield
in Mitigation for
Blast-Induced Traumatic Brain Injury (bTBI)
KWONG MING TSE
(KM TSE)
13th Australasian Injury Prevention and Safety Promotion Conference
• Blast-Induced Injuries
➢ “signature injury of modern wars”
➢ 43% of the wounded in international
conflicts.
Source: the Defence and Veterans Brain Injury Centre
(DVBIC))
2
Introduction
13th Australasian Injury Prevention and Safety Promotion Conference
Introduction
• Primary Blast Injury (induced by shock wave)
3
13th Australasian Injury Prevention and Safety Promotion Conference
Introduction
• Primary Blast Injury (induced by shock wave)
4
Blast Overpressure
(Shock wave)
13th Australasian Injury Prevention and Safety Promotion Conference
• Aims:
➢ To investigate the effectiveness of a sandwich-structured polycarbonate-
aerogel faceshield in mitigating bTBI.
➢ To provide insight in the design of a facial protective gear that can potentially
be useful to military personnel.
• Hypothesis:
➢ High acoustic impedance of aerogel would result in large acoustic mismatch
between its neighbouring laminate layers, reducing the amount of blast wave
transmission to the head.
Aims & Hypothesis
5
13th Australasian Injury Prevention and Safety Promotion Conference
• Different Faceshield Designs
Method
6
Singapore, A*Star,
Institute of High
Performing Computing
(IHPC) Head Model
13th Australasian Injury Prevention and Safety Promotion Conference
• Coupled Eulerian-Lagrangian (CEL) Method
➢ Eulerian: Air
➢ Lagrangian: Head, Helmet & other solid materials.
Method
7
Blast waveform characteristic:
Friedlander’s waveform
Applied
Blast
Loading
Non-reflective & Free Outflow BC
13th Australasian Injury Prevention and Safety Promotion Conference
Results & Discussion
8
13th Australasian Injury Prevention and Safety Promotion Conference
Results & Discussion
9
13th Australasian Injury Prevention and Safety Promotion Conference
Results & Discussion
10
Tse, K. M.*, Tan, L, B., Sappinggi, M. A. B., Franklyn, M., Lee, P.V.S., Tan, V. B. C. and Lee, H. P.* (2017). The role of a composite polycarbonate-
aerogel face shield in protecting the human brain from blast-induced injury: A fluid–structure interaction (FSI) study. Journal of Sandwich Structures &
Materials. (In Press)
Tan, L. B.*, Chew, F. S., Tse, K. M., Tan, V. B. C. and Lee, H. P. (2014). Impact of complex blast waves on the human head – a computational study. Int J
Numer Method Biomed Eng, 30 (12): pp. 1476-1505.
➢Sandwiched structured face shield of
polycarbonate and aerogel had significantly
reduced ICP.
PC exterior shell casing (structural
integrity)
Aerogel (high acoustic impedance to
blast wave)
13th Australasian Injury Prevention and Safety Promotion Conference 11
• National University of Singapore (NUS)
➢ Prof. Heow Pueh Lee
➢ Prof. Vincent Beng Chye Tan
➢ Dr. Long Bin Tan
• The University of Melbourne
➢ Prof Peter Vee Sin Lee
➢ Dr. Melanie Franklyn
Acknowledgement
13th Australasian Injury Prevention and Safety Promotion Conference
Ballistic Threat
Gas Gun
Kwong Ming TSE
Applied
Blast
Loading
Blast ThreatSports-related TBI
Tse’s Computer Head Model
13th Australasian Injury Prevention and Safety Promotion Conference 13
The End
Email: [email protected]
Google Scholar:
http://scholar.google.com.sg/citations?user=EMERS88AAAAJ&hl=en
Researcher ID: http://www.researcherid.com/rid/D-8669-2011
ORCID: http://orcid.org/0000-0002-8170-0775
PhD, National University of Singapore (2014)
Citations: 284 h-index: 8 i10-index: 7