Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Blast-Related Lung Injury Risk Estimation Based on Chest Wall Velocity

Blast-Related Lung Injury Risk Estimation Based on Chest Wall Velocity Exposure to a shock wave generated during an explosion may result in pulmonary trauma. For short-duration shock waves, the maximum of incident impulse is known to be correlated with the lung injury level of unprotected biological models. This study aims to correlate parameters related to large animal chest response under blast loading with a pulmonary injury level, which leads up to determine parameters which are themselves correlated with the maximum of incident impulse. Two groups of six post-mortem swine (PMS), lying on the ground, were exposed to shock waves of increasing intensity but constant positive-phase duration: 1.0 ms and 1.8 ms. Intra-thoracic pressure was recorded with a hydrophone placed into the esophagus while chest motion was obtained from an accelerometer screwed onto a mid-torso rib. Combining those scenarios with others performed on post-mortem swine at a duration of 1.4 ms showed that the maximum chest wall velocity (VMAX) was correlated with incident impulses ranging from 35 to 160 kPa ms. Lung injury tolerance limits from no injury to severe ones (hemorrhage involving up to 60% of the lung) were redefined with this parameter. The lung injury threshold for near-wall scenarios in terms of incident impulse is 58.3 kPa ms, corresponding to a VMAX of 2.78 m/s. The definition of lung injury criterion for unprotected biological models from blast exposure is a first step toward the proposition of tolerance limits to evaluate thoracic protective system regarding injury outcomes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Human Factors and Mechanical Engineering for Defense and Safety Springer Journals

Blast-Related Lung Injury Risk Estimation Based on Chest Wall Velocity

Download PDF
9 pages

Loading next page...
 
/lp/springer-journals/blast-related-lung-injury-risk-estimation-based-on-chest-wall-velocity-OvkVli0N19

References (23)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2021
ISSN
2509-8004
eISSN
2367-2544
DOI
10.1007/s41314-021-00038-5
Publisher site
See Article on Publisher Site

Abstract

Exposure to a shock wave generated during an explosion may result in pulmonary trauma. For short-duration shock waves, the maximum of incident impulse is known to be correlated with the lung injury level of unprotected biological models. This study aims to correlate parameters related to large animal chest response under blast loading with a pulmonary injury level, which leads up to determine parameters which are themselves correlated with the maximum of incident impulse. Two groups of six post-mortem swine (PMS), lying on the ground, were exposed to shock waves of increasing intensity but constant positive-phase duration: 1.0 ms and 1.8 ms. Intra-thoracic pressure was recorded with a hydrophone placed into the esophagus while chest motion was obtained from an accelerometer screwed onto a mid-torso rib. Combining those scenarios with others performed on post-mortem swine at a duration of 1.4 ms showed that the maximum chest wall velocity (VMAX) was correlated with incident impulses ranging from 35 to 160 kPa ms. Lung injury tolerance limits from no injury to severe ones (hemorrhage involving up to 60% of the lung) were redefined with this parameter. The lung injury threshold for near-wall scenarios in terms of incident impulse is 58.3 kPa ms, corresponding to a VMAX of 2.78 m/s. The definition of lung injury criterion for unprotected biological models from blast exposure is a first step toward the proposition of tolerance limits to evaluate thoracic protective system regarding injury outcomes.

Journal

Human Factors and Mechanical Engineering for Defense and Safety – Springer Journals

Published: Apr 24, 2021

There are no references for this article.