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Impact Resistance of Layered Aramid Fabric: A Numerical Study on Projectile-Induced Damage.
Polymers (Basel)
December 2024
Faculty of Entrepreneurship, Engineering and Business Management, National University of Science and Technology Politehnica, 060042 Bucharest, Romania.
The aim of this work is to comparatively analyze, using numerical simulation, the impact behavior of aramid fabric. A layered panel was impacted by two projectiles specific to the NIJ protection level HG1. The protection level in this study is based on NIJ Standard 0123.
View Article and Find Full Text PDFBehind Amor Blunt Trauma Lung and Liver Strains From Indenter Loading Via Finite Element Modeling.
J Eng Sci Med Diagn Ther
August 2025
U.S. Army Aeromedical Research Laboratory, Fort Novosel, AL 36362.
To determine behind armor blunt trauma (BABT) injury criteria, experiments have been conducted by launching blunt projectiles at live swine at velocities up to 65 meters per second (m/s) using one type of indenter design. To ensure the generalizability of the developed injury criteria, additional tests with different indenter designs are needed. The objectives of this study were to evaluate the kinematics and injury parameters from two indenter designs using human body finite element modeling.
View Article and Find Full Text PDFTheoretical predictions to produce medical Zr radionuclide via the Y(p, n)Zr route at ≈ 5-60 MeV: Comparison of experimental and theoretical production data.
Appl Radiat Isot
November 2024
Department of Applied Physics, Hawassa University, Hawassa, Ethiopia. Electronic address:
Theoretical investigations were carried out for the production of the medically important Zr radionuclide. This radionuclide is produced in the interaction of a proton projectile with Y-target, a readily available target with greater purity at ≈ 5-60 MeV. The Y (p, n)Zr production route, a promising avenue in the fields of medical imaging and radiopharmaceutical development, is of significant interest due to its potential to produce Zr, a radionuclide with a half-life of 78.
View Article and Find Full Text PDFAssault rifle injuries in civilians: ballistics of wound patterns, assessment and initial management.
Eur J Trauma Emerg Surg
December 2024
SECRAB Security Research, 147 63, Uttran, Sweden.
Purpose: Wounds from assault rifles and their commercial offspring have been encountered with increasing frequency in civilian practice. Our aim is to summarize wound ballistics related to the main injury patterns that can also affect management strategies.
Methods: An online search of the PubMed was conducted for research and review articles published after 2000 in English, using the MeSH terms "gunshot wounds", "mass casualty incidents", "war-related injuries", "soft tissue injuries", "vascular system injuries", "colon injuries", "wound infection", "antibiotic prophylaxis", "debridement", "hemorrhage", "penetrating head injuries", "pneumothorax" and additional free-text terms.
Collision of cesium atoms on helium nanodroplets: Unraveling mechanisms for surface capture at experimental velocities.
J Chem Phys
November 2024
Université Paris-Saclay, Univ Evry, CY Cergy Paris Université, CNRS, LAMBE, Evry-Courcouronnes 91025, France.
The collision of cesium atoms on the surface of helium nanodroplets (HNDs) containing 1000 atoms is described by the ZPAD-mPL approach, a zero-point averaged dynamics (ZPAD) method based on a He-He pseudopotential adjusted to better reproduce the total energy of He1000. Four types of collisional patterns were identified depending on the initial projectile speed v0 and impact parameter b. At the lowest speeds (v0 ≲ 250 m s-1), Cs atoms are softly captured by the HND surface, while at the highest ones (v0 ≳ 500-600 m s-1), Cs atoms can travel through the droplet and move away.
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