Results 1 to 10 of about 9,451 (248)
Polyimide aerogels for ballistic impact protection. [PDF]
Sci Rep, 2022 AbstractThe ballistic performance of edge-clamped monolithic polyimide aerogel blocks (12 mm thickness) has been studied through a series of impact tests using a helium-filled gas gun connected to a vacuum chamber and a spherical steel projectile (approximately 3 mm diameter) with an impact velocity range of 150–1300 m s−1.
Malakooti S +9 more
europepmc +4 more sources
A machine learning model for predicting the ballistic impact resistance of unidirectional fiber-reinforced composite plate. [PDF]
Sci Rep, 2021 It has been a vital issue to ensure both the accuracy and efficiency of computational models for analyzing the ballistic impact response of fiber-reinforced composite plates (FRCP). In this paper, a machine learning (ML) model is established in an effort
Lei XD +5 more
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Myocardial Contusion Due to Ballistic Impact Force. [PDF]
JACC Case RepMyocardial contusion typically occurs from blunt cardiac trauma often due to motor vehicle collisions and falls from a significant height. Gunshot wounds may cause compression and stretching of tissue from the sonic pressure waves that precedes the bullet.
Iqbal SB +4 more
europepmc +3 more sources
Ballistic impact on concrete slabs: An experimental and numerical study [PDF]
EPJ Web of Conferences, 2021 The ballistic perforation resistance of 50 mm thick concrete slabs impacted by 20 mm diameter ogive-nose steel projectiles is investigated experimentally and numerically. Three commercially produced concretes with nominal unconfined compressive strengths
Kristoffersen Martin +3 more
doaj +1 more source
Alumina and low density polyethylene composite for ballistics applications
Journal of Materials Research and Technology, 2021 The efficiency of alumina and low-density polyethylene (LDPE) composites in ballistic applications was investigated. Different concentrations of alumina were studied, 70, 75, 80, 85, 90 wt.%. The ballistic tests were carried out at subsonic speed using a
Marcio Jardim Oliveira +3 more
doaj +1 more source
Response to Ballistic Impact of Alumina-UHMWPE Composites [PDF]
Materials Research, 2018 The response to ballistic impact of alumina-ultra high molecular weight polyethylene (UHMWPE) composites with different relative concentrations of alumina was investigated. The impact tests were carried out at subsonic speed using a compressed air system.
André Ben-Hur da Silva Figueiredo +5 more
doaj +2 more sources
Metals, 2023 An internal state variable (ISV)-based constitutive model has been used within a Lagrangian finite element analysis (FEA) framework to simulate ballistic impact of monolithic rolled homogenous armor (RHA) steel plates by RHA steel spheres and cylinders ...
Luke Peterson +3 more
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Modeling and simulation of impact behavior of 3D woven solid structure for ballistic application
Journal of Industrial Textiles, 2022 This study was carried out to understand and evaluate the response of 3 D woven fabrics upon the simulated ballistic forces. Under the low-velocity impact, analytical and numerical models were developed for determining the impact energy, which was used ...
Lekhani Tripathi +2 more
doaj +1 more source
Impact response and ballistic performances of graphitic foams [PDF]
WIT Transactions on the Built Environment, 2009 The demand for low weight structures that can achieve different structural, thermal and safety results is increasing in multiple engineering applications. Graphitic foam, due to its low density, relatively easy machine tooling, stiffness and homogeneity can be a good choice for sandwich panel filling. Moreover, in spite of its brittle general behaviour,
JANSZEN, GERARDUS, P. Nettuno
openaire +3 more sources
PNEUMATIC-BALLISTIC IMPACT DEVICE [PDF]
Experimental Techniques, 1987 Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/72123/1/j.1747-1567.1987.tb00669.x ...
Nusholtz, Guy S. +3 more
openaire +2 more sources