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Forensic Science International
Experimental study of the coupling parameters influencing the terminal effects of thoracic blunt ballistic impacts Julien Pavier, André Langlet, Nicolas Eches, Nicolas Prat, Patrice Bailly, Jean-François Jacquet Forensic Science International Volume 252, Pages (July 2015) DOI: /j.forsciint Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 1 Input force Fe and output force Fs vs. time (sample 23).
Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 2 Strain-rate of 780s−1 (a) and stress–strain curves (b) of the three materials. Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 3 Dynamic and static hysteresis.
Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 4 Kinematic of the 40mm caliber projectiles 22L and 23L.
Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 5 Influence of the projectile characteristics on the impact force on a rigid wall. Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 6 The peak force of projectiles 22S, 23S, 23L, plotted vs. the impact velocity. Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 7 Mounting of the biological surrogate and schematic view of the experimental bench. Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 8 Speckle and size of the area defined for the image correlation process (a). 3-D reconstruction (b) and (c) plane views of the normal displacement field W of the rear side of the lateral TW (23S – 50J). The spine is at the bottom of the image. The white line follows the impacted rib. Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 9 Displacement profiles (TW) created by the 23L projectiles (kinetic energy is 50J) obtained after image correlation (transverse line). Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 10 Displacement profiles (TW) created by the 23S projectiles (kinetic energy is 50J) obtained after image correlation (transverse line). Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 11 Displacement profiles (TW) created by the 22S projectiles (kinetic energy is 50J) obtained after image correlation (transverse line). Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 12 Typical views of the rib response showing the fracture.
Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 13 Accelerations of the ribs and of the three projectile bases (absolute values). Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 14 Acceleration (a) and velocity (b) of the projectile base.
Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 15 Deformed shapes of the rib obtained from the acceleration measurements (a) 23S – 89J, (b) 23L – 90J. Corresponding impulse histories and events (c). Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 16 Examples of impulse histories (a) and comprehensive plot of I (b) (the star symbols indicate the values corresponding to rib fractures). Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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Fig. 17 The local maximal displacement Wmax vs. the pre-impact momentum Q0 (a), (b), and vs. the pre-impact kinetic energy Ec (c), (d). Results (c) and (d) were obtained with living pigs in the study of [11]. Forensic Science International , 39-51DOI: ( /j.forsciint ) Copyright © 2015 Elsevier Ireland Ltd Terms and Conditions
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