Results 51 to 60 of about 9,451 (248)

Ballistic Impacts on Bone: Effect of Preloading [PDF]

Human Factors and Mechanical Engineering for Defense and Safety, 2018
An experiment to investigate the effect of preloading on bone impacts by projectiles was undertaken. During this experiment, a total of 59 bones were impacted. Red deer tibias were used, with impacts to the shaft under three different loading conditions. The purpose of the trial was to provide an indication on whether preloading a bone has an effect on
J. J. Keirl, L. Burton, K. Waterworth, C. Girdlestone   +3 more
openaire   +1 more source

Numerical investigation on effect of different projectile nose shapes on ballistic impact of additively manufactured AlSi10Mg alloy

Frontiers in Materials
In the last few years, due to the superior mechanical qualities of Additive Manufacturing (AM) AlSi10Mg alloy to those of traditional casting process AlSi10Mg alloys, the application of AM technology has significantly increased.
Mahesh Naik, V. Pranay, D. G. Thakur, Sunil Chandel, Sachin Salunkhe, Sachin Salunkhe, Marek Pagac, Emad S. Abouel Nasr   +7 more
doaj   +1 more source

High‐Performance Multi‐Walled Carbon Nanotubes‐Organic Passivated Si Solar Cells Enabled by Spatially Selective Harvesting of High‐Quality Sponges

Advanced Science, EarlyView.
Our work achieves an efficiency breakthrough in MWCNTs/Si solar cells by screening high‐quality pristine MWCNTs without any separation or purification processes. This breakthrough is mainly attributed to the excellent dispersibility of Nafion and the excellent hole transport property of MWCNTs:Nafion film containing charge transfer doping, passivation,
Yuke Ren, Qi Wang, Jiahe Chen, Jianan Zhang, Jianxin Guo, Dehua Yang, Bingbing Chen, Lu Zhang, Yiming Xu, Xuan Chang, Tiansheng Sun, Qing Gao, Anyuan Cao, Jianhui Chen   +13 more
wiley   +1 more source

Ballistic Tests of Alumina-UHMWPE Composites Submitted to Gamma Radiation [PDF]

Materials Research, 2019
The energy absorption in ballistic tests of alumina-ultra high molecular weight polyethylene (UHMWPE) composites with 60, 80 and 90 wt% alumina submitted to gamma radiation doses of 25, 50 and 75 kGy was investigated. The ballistic tests were carried out
André Ben-Hur da Silva Figueiredo, Hélio de Carvalho Vital, Ricardo Pondé Weber, Édio Pereira Lima Júnior, João Gabriel Passos Rodrigues, Letícia dos Santos Aguilera, Ronaldo Sergio de Biasi   +6 more
doaj   +1 more source

Efficient Hot Carrier Management in Lead Halide Perovskite Micro‐Disks Revealed by Super‐Diffusive Migration

Advanced Science, EarlyView.
Hot‐carrier transport in metal halide perovskites is investigated using spatiotemporally‐resolved photoluminescence microscopy. Mesa‐shaped MAPbBr3 microdisks exhibit anomalous super‐diffusive carrier propagation on nanosecond timescales, driven by hot‐carrier stabilization and strong carrier–phonon coupling.
Nithin Pathoor, Shun Omagari, Martin Vacha   +2 more
wiley   +1 more source

A numerical study on the impact behavior of foam-cored cylindrical sandwich shells subjected to normal/oblique impact

Latin American Journal of Solids and Structures
Finite element analysis was used to investigate the impact behavior of the foam-cored sandwich shells under the ballistic impact. The ballistic limit, failure mode of the face-sheet and energy absorption of the uniform/graded core were discussed in this ...
Buyun Su, Zhiwei Zhou, Jianjun Zhang, Zhihua Wang, Xuefeng Shu, Zhiqiang Li   +5 more
doaj   +1 more source

Bioinspired composite segmented armour: Numerical simulations

Journal of Materials Research and Technology, 2019
Nature has evolved ingenious armour designs, like the flexible carapaces of armadillo and boxfish consisting of hexagonal segments connected by collagen fibres, that serve as bioinspiration for modern ballistic armours.
Pedro Miranda, Antonia Pajares, Marc A. Meyers   +2 more
doaj   +1 more source

Cation Diffusion‐Mediated Displaced Reaction‐Transformation in Green Steelmaking

Advanced Science, EarlyView.
The removal of O lattice atoms by environmental H2 at the surface of Fe3O4 results in Fe enrichment, driving the inward diffusion of Fe cations into the bulk. Through hopping between unoccupied and initially occupied sites, cation diffusion triggers a spatially displaced reaction‐transformation and drives subsequent dynamic phase transformations and ...
Guangyi Guo, Paul Paciok, Baptiste Bienvenu, Longqi Bai, Barak Ratzker, Marc Heggen, Xuyang Zhou, Dierk Raabe   +7 more
wiley   +1 more source

COMPUTATIONAL BALLISTIC IMPACT ANALYSIS OF AIRCRAFT ARMORS

Havacılık ve Uzay Teknolojileri Dergisi, 2017
Lightweight and ballistic resistance are significant parameters in the design of aircraft armors. Aircraft should not compromise the payload or its maneuverability due to the armors added to the system.
Seher Eken, A.Kadir Yavuz, Stuart Leigh Phoenix   +2 more
doaj  

Mechanical Properties and Ballistic Performance for Different Coatings on HARDOX 450 Steel for Defense Applications

Crystals
The aim of the current study is to investigate the mechanical properties and ballistic performance of HARDOX 450 steel for defense applications in different conditions: uncoated, alumina-coated, and LINE X polyurea-coated.
Cosmin Nicolescu, Tudor Viorel Tiganescu, Aurora Antoniac, Ovidiu Iorga, Brandusa Ghiban, Alexandru Pascu, Alexandru Streza, Iulian Antoniac   +7 more
doaj   +1 more source