Готові списки джерел за темами / Target penetration

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Добірка наукової літератури з теми "Target penetration"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Target penetration"

Harikrishnan, S., V. Venkateswara Rao, and Ajay Misra. "A Numerical Study of Penetration in Concrete Targets by Eroding Projectiles of Different Materials." Defence Science Journal 71, no. 5 (2021): 612–18. http://dx.doi.org/10.14429/dsj.71.16942.

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Numerical simulations have been performed to examine the effect of three different eroding rod materials on the penetration in concrete targets. Same kinetic energy is delivered to concrete target using cylindrical rods of Aluminium, Iron, and Copper of identical size. Impact velocities have been varied to keep the kinetic energy the same. Penetration characteristics like centerline interface velocity, penetrator deceleration, plastic strain in the target, and energy partitioning during penetration have been studied for the three different penetrator materials. In all three cases, penetration

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Qin, Dong-ze, and Pei-hang Li. "Dynamic Characteristics of the Rotating Penetrating Missile for Attacking Warship Vertically." Journal of Engineering 2021 (July 19, 2021): 1–9. http://dx.doi.org/10.1155/2021/9953866.

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The paper aimed to analyze the dynamic response of a new type penetrating missile in rotary attacking warship. The dynamic response characteristics of the penetrator become more complex when attacking the ship target due to the special materials of the deck such as stiffeners. Therefore, different from attacking other targets, the article reveals the design rules of precession penetration ammunition and fuze. A physical model of the missile target is established to study the numerical simulation of the penetration process of rotating projectile into a stiffened target based on finite element a

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Wu, Qun Biao, Pei Hui Shen, and Rong Zhong Liu. "Simulation Analysis of Penetration Performance of Tungsten Alloy and Tungsten Carbide Rod Penetrator." Applied Mechanics and Materials 182-183 (June 2012): 283–87. http://dx.doi.org/10.4028/www.scientific.net/amm.182-183.283.

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In penetration mechanics, the material parameters of the rod penetrator are very important factors which influence the effect of penetration. The effect of each parameter changes with the impact velocity. Simulation analysis of two models filled with tungsten alloy and tungsten carbide separately penetrating semi-infinite armor steel target at medium to high velocities has been made to quantitatively analyze the key roles that the density and hardness play. Simulation results indicate that a dividing line of velocity exists between the penetrations of two materials. Above the line, tungsten al

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Liang He, Liang, Jian Ping Yin, and Jian Ya Yi. "Numerical simulation of reactive composite jet penetrating concrete target." Journal of Physics: Conference Series 2612, no. 1 (2023): 012012. http://dx.doi.org/10.1088/1742-6596/2612/1/012012.

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Abstract In order to allow more reactive material to enter the penetration hole when the initiation delay time of reactive material arrives, a double-layered liner structure with inner and outer liners of unequal height is designed. The outer liner is polytetrafluoroethylene/aluminum (PTFE/AL) reactive material, and the inner liner is metal material. The AUTODYN software were used to study the effects of height ratio α of the inner and outer liners and inner liner material on the reactive composite jet forming and penetrating C35 concrete target. The results show that when α varies, the compos

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Liu, Li Shuang. "High Overload Penetration Test and Analysis of the Multi-Layer Steel Target." Advanced Materials Research 295-297 (July 2011): 1178–82. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1178.

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High-g accelerometer and storage test system is designed for the measurement of multi-layer steel targets penetration. The penetration test of the double layer steel target is performed, and the verload acceleration is obtained when the projectile penetrates the steel target. According to the overload data, the effective overload accelerations are concluded. The effective overload accelerations gained when projectile penetrates the double steel targes are 81078g and 152061g respectively. Also from the calculation, it can be concluded that the test errors are all less than 10%, which can meet t

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Dong, Yu Cai, Rong Zhong Liu, Jie Liu, and Long Xiang Xia. "Simulation Research on Head Structure and Rod Components." Applied Mechanics and Materials 415 (September 2013): 418–22. http://dx.doi.org/10.4028/www.scientific.net/amm.415.418.

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In order to further optimize the structure of tube-rod extended penetrator, the author did numerical simulation to the penetration process of five different head structures and rod assembly of tube-rod extended penetrator to finite RHA603 target with LS-DYNA at a certain speed. Be drawn from the results of the numerical simulation, the penetration effect of truncated cone head structure is the best, because its top angle is small, the wave on the top is weak, the overpressure is small, and it is faster to open a pit on the target. 3mm aluminum sleeve rod attachment structure is the best. In th

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Chen, Peng, Wenbin Li, Yiming Li, Weihang Li, Zhiwei Guo, and Guixiang Yin. "Investigation into Damage Characteristics and Ballistic Performance of In-Contact Multi-Layer Steel Targets Subjected to High-Velocity Impact by Explosively Formed Projectiles." Symmetry 16, no. 12 (2024): 1665. https://doi.org/10.3390/sym16121665.

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Given the significantly large deformation and high strain exhibited by explosively formed projectiles (EFP) in penetration, their penetration performance into multi-layer targets differs from that of ordinary bullets or rigid projectiles. Therefore, it is necessary to investigate the ballistic performance and the damage mechanism of target deformation when an EFP penetrates a multi-layer target. This study conducted high-velocity impact tests of EFPs on four types of multi-layer steel targets, analyzing the damage morphology and deformation characteristics of multi-layer steel targets subjecte

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Goncharuk, V. A., B. O. Galanov, M. O. Iefimov, I. V. Goncharova, and V. Yu Tsivilitsin. "Determination of the critical penetration rate of targets from aluminum and magnesium alloys." Uspihi materialoznavstva 2024, no. 8-9 (2024): 52–59. https://doi.org/10.15407/materials2024.08-09.005.

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The motion of a non-deformable kinetic projectile of cylindrical shape in a continuous homogeneous semi-infinite medium is considered based on the well-known Alekseevsky-Tate model. As a result of solving the differential equation of motion of the impactor, the dependence of its speed on the penetration depth was obtained. The boundary conditions are: before penetrating the target, the speed of the impactor is equal to the critical penetration speed, and after penetrating the thickness of the target, the speed of the impactor is equal to zero. A simple formula for calculating the critical velo

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Lei, J. Y., J. H. Dou, and Y. D. Jing. "A modified formula to predict the penetration depth for jet penetrating spaced target plates." Journal of Physics: Conference Series 2478, no. 12 (2023): 122032. http://dx.doi.org/10.1088/1742-6596/2478/12/122032.

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Abstract In order to predict the penetration depth for jet penetrating spaced target plates, a modified formula with exponential form is proposed in this work based on the existing method. The processes of jet penetrating homogeneous target plate and spaced target plates are observed by simulation, and the penetration depth of different layers is obtained. The relationship between the number of layers and the penetration depth is described by the proposed formula, in which the parameters are determined by the simulation results. The penetration depth for jet penetrating spaced target plates ca

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Liu, Zihan, Xianfeng Zhang, Chuang Liu, Yuxuan Deng, Xianwei Hou, and Yizhou Fang. "Size effect analysis of projectile penetrating semi-infinite concrete target." Journal of Physics: Conference Series 2891, no. 5 (2024): 052030. https://doi.org/10.1088/1742-6596/2891/5/052030.

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Abstract Accurately assessing the damage effects of deep-penetrating weapons is of great significance for promoting the development of large-caliber kinetic energy penetrator warheads and the design of engineering protection. To accurately predict the penetration depth of projectiles into semi-infinite concrete targets, this paper derives through rigorous dimensional analysis and similarity theory that the maximum coarse aggregate size not scaling with the scale ratio and the strain rate effect are among the factors preventing small-scale projectile penetration tests on concrete targets from b

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Більше джерел

Дисертації з теми "Target penetration"

Zhou, Yu. "Simulation of High-velocity Penetration for Rigid Projectile into Plain Concrete Target using Discrete Element Method." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/31325.

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Penetration of high velocity is of concern for both civilian and military research for decades, and computerized simulation is the scholarâ s focus in recent years. This study presents a study on the Discrete Element Method (DEM) simulation of plain concrete targetâ s behavior under high-velocity penetration of rigid projectile. In this thesis, different types of research works including empirical, analytical and numerical methods in penetration by the previous scholars were carefully reviewed. A DEM-based concrete model was established by using software PFC3D. The major micro-variables o

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Renström, René. "Impact of Metallic Projectiles on a Ceramic Target Surface : Transition Between Interface Defeat and Penetration." Doctoral thesis, Uppsala universitet, Hållfasthetslära, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7264.

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The purpose of this thesis is to gain understanding of the load on flat target surfaces produced by projectile impact. Models are proposed from which upper and lower bounds can be derived for the transition be-tween interface defeat and normal penetration. It is shown that the dominating contribution to the normal load is generally provided by the hydrodynamic pressure due to the effect of inertia. In addition it is shown that the contributions from yield strength and compressibility are also significant. For a cylindrical tungsten alloy projectile at an impact velocity representative of to-da

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Lubda, Markus [Verfasser], Harald [Akademischer Betreuer] Kolmar, and Hagen Jörg [Akademischer Betreuer] von. "Target-Site Penetration of Active Ingredients in Human Skin / Markus Lubda ; Harald Kolmar, Jörg von Hagen." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2020. http://d-nb.info/1220832898/34.

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Lundberg, Patrik. "Interface Defeat and Penetration: Two Modes of Interaction between Metallic Projectiles and Ceramic Targets." Doctoral thesis, Uppsala University, Department of Engineering Sciences, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4641.

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<p>Ceramics constitute an important group of low-density armour materials. Their high intrinsic strength makes it possible to design ceramic armour systems capable of defeating projectiles directly on the ceramic surface. This capability, named interface defeat, signifies that the projectile material is forced to flow radially outwards on the surface of the ceramic without penetrating significantly.</p><p>This thesis presents impact experiments between long-rod projectiles and ceramic targets. The projectile/target interaction was studied using flash X-ray technique. Transition velocities (the

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Mullen, Damon Anthony. "COMPARISON OF MAXIMUM FORCES REQUIRED TO PENETRATE TEN AND TWENTY PERCENT BALLISTICS GELATIN, MEAT, AND CLAY TO ASSESS VARIATION BETWEEN TARGET MEDIAIN ARROW PENETRATION STUDIES." Kent State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=kent1619013100008557.

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Ballew, Wesley D. "Taylor Impact Test and Penetration of Reinforced Concrete Targets by Cylindrical Composite Rods." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/34098.

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We use the three-dimensional finite element code DYNA3D to analyze two problems: (a) the normal impact of a cylindrical monolithic or composite rod against a smooth flat rigid target, (commonly known as the Taylor impact test), and (b) the penetration of composite and monolithic steel cylindrical rods into reinforced concrete targets. The composite rod is made of either a steel or copper shell enclosing a ceramic. The ceramic and the steel are assumed to fail at a critical value of the effective plastic strain, whereas no failure is considered in the copper. The thermoviscoplastic response

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Machado, Brenda I. "Characterization and cytotoxic assessment of ballistic aerosolized particulates for tungsten alloy penetrators interfacing with steel targets." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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Parker, Lonnie T. "Enhancement of a three dimensional target model for deep ground penetrating radar systems /." Online version of thesis, 2006. https://ritdml.rit.edu/dspace/handle/1850/2890.

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Woolmore, Nicola J. "The failure of a tungsten carbide-cobalt cored projectile penetrating a hard target." Thesis, Cranfield University, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/4657.

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Experimental results are presented from an investigation of the parameters of a ceramic-faced armour system that are required to induce damage in a tungsten carbide - cobalt (WC-Co) penetrator. A WC-Co material model has been successfully developed and implemented within the numerical hydrocode AUTODYN 2D. The understanding of penetration mechanisms was used to guide a parametric investigation, validating the WC-Co material failure model with experimental results. A series of experiments has been conducted firing the Russian 14.5 mm BS41 WC-Co cored projectile into various thicknesses and type

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Woolmore, N. J. "The failure of a tungsten carbide-cobalt cored projectile penetrating a hard target." Thesis, Engineering Systems Department, 2010. http://dspace.lib.cranfield.ac.uk/handle/1826/4657.

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Книги з теми "Target penetration"

Ahrens, T. J. Planetary and primitive object strength measurements and sampling apparatus: NASA #NAGW 2439, final report; February 1, 1991 through January 31, 1997. California Institute of Technology, Seismological Laboratory, 1997.

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Friedrich, Hörz, and United States. National Aeronautics and Space Administration., eds. Penetration experiments in aluminum 1100 targets using soda-lime glass projectiles. NASA, 1995.

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G, Crouch I., and Materials Research Laboratory (Australia), eds. Analysis of the perforation of monolithic and simple laminate aluminium targets as a test of analytical deformation models. Dept. of Defence, Materials Research Laboratory, 1988.

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Foliage penetration radar: Detection and characterization of objects under trees. SciTech Pub., 2011.

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Penetrator, No. 1: The Target Is H. Pinnacle Books, 2000.

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Cratering and penetration experiments in Teflon targets at velocities from 1 to 7 km/s. National Aeronautics and Space Administration, 1994.

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Modeling the Effect of Penetrator Nose Shape on Threshold Velocity for Thick Aluminum Targets. Storming Media, 1997.

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Gofeld, Michael. Lumbar Transforaminal and Nerve Root Injections: Ultrasound. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199908004.003.0017.

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Ultrasound (US) guidance has gained recognition in the field of regional anesthesia mainly because of its definite advantage of visually localizing the desired target and also due to perceived benefits of safety, accuracy, and efficiency when peripheral nerve blocks are performed. On the contrary, ultrasonography of the spinal structures may be challenging because of depth, bony acoustic shadowing, and complex three-dimensional anatomy. Nevertheless, US allows satisfactory imaging of the posterior elements of spine column and paraspinal soft tissues. This makes US applicable and practical in t

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Частини книг з теми "Target penetration"

Xu, Xiangyu, Yingxiang Wu, Yifan Jia, and Songping Gan. "Analysis of the Inclined Impact Resistance Characteristics of Concrete Structures Against Projectiles." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_75.

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AbstractThe research involved the use of commonly utilized concrete materials as the target plate, with a specially designed 76 mm projectile intended to impact the concrete structure at a specific angle. The goal was to conduct numerical simulation research on the deflection of the projectile under oblique impact conditions and analyze the concrete structure’s ability to resist penetration under such conditions. Through numerical simulation calculations, various aspects of the oblique impact were studied, including ricochet patterns under different projectile velocities and angles of incidenc

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Lankford, W. T. "Factors Affecting Penetration of Compounds Through the Cuticles of Insects and Mites." In Interactions Between Adjuvants, Agrochemicals and Target Organisms. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-02988-6_5.

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Gauvrit, C. "Methodology for Determining Foliar Penetration of Herbicides with Reference to Oil-Based Adjuvants." In Interactions Between Adjuvants, Agrochemicals and Target Organisms. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-02988-6_9.

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Buchar, J., and J. Hřebíček. "Penetration of a Long Rod into a Semi-infinite Target." In Solving Problems in Scientific Computing Using Maple and Matlab ®. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-97533-2_15.

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Stock, D., and L. E. Davies. "Foliar Penetration of Agrochemicals: Limitations Imposed by Formulation Type and Some Interactions with Adjuvants." In Interactions Between Adjuvants, Agrochemicals and Target Organisms. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-662-02988-6_2.

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Feng, Jiusong, Liyuan Fan, Jinwen Hu, Zhao Xu, and Junwei Han. "Multi-target Penetration Path Planning for UAV Swarms Based on Time Synchronization Constraints." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-2244-3_8.

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Li, Zhansheng, Chenggang Xie, Xiaohong Shi, and Cong Zhang. "Research on Simulation of Low Altitude Penetration Technologies for Target of Radar Training Simulator." In AsiaSim 2012. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34387-2_19.

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Miyoshi, Hitoshi. "Numerical Simulation of Shaped Charges Using the SPH Solver: Jet Formation and Target Penetration." In Explosion, Shock Wave and Hypervelocity Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-465-0.65.

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Ostasevicius, Vytautas, Vytautas Jurenas, Mantas Venslauskas, and Laura Kizauskiene. "A Narrative Review of Noninvasive Therapy." In Synthesis Lectures on Biomedical Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-79025-6_1.

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Abstract This chapter discusses the current theoretical and practical applications of ultrasound-assisted or vibratory blood flow activation and bioparticle separation technologies. The disadvantages of high megahertz ultrasound, which is widely used in medical practice for diagnostic and sometimes therapeutic purposes, are related to the limited penetration depth of the acoustic signal, the scattered effect on biological tissues and the overheating. Emphasis is placed on the use of ultrasound to activate the delivery of drugs to the target by disrupting the biofilm covering the bacteria and,

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Merzah, O. M., M. N. Ibrahim, M. A. Abbas, and M. A. Lajis. "Influence of Projectile Penetration on the Multiple-Layered Target Based on Statistical and Numerical Analysis." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5753-8_4.

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Тези доповідей конференцій з теми "Target penetration"

Abdelshafy, M. H., and S. O. Oyadiji. "Penetration Behaviour of Steel Plates." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35229.

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A finite element analysis using ABAQUS v6.6 has been performed to investigate the penetration behaviour of different target structures under the impact velocities of 1000 & 1200 m/s. The analysis has been performed to study the effect of the target configuration and the effect of introducing a damping material like rubber within the target structure on the penetration behaviour of these targets. Three dimensional (3D) models of targets consisting of various discrete one, two and three layers of hardened steel have been developed. The total thickness of each single or multiple layer steel t

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Nuckols, D. Zach, and S. E. Jones. "Strength Estimates for High Velocity Penetration of Geological Targets by the Compaction Ring Theory." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3046.

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Existing theories for rigid body penetration model the target response to a penetration process as a cavity-expansion. A new analysis, however, offers an innovative approach to rigid body penetration of porous geological targets. The theory analyzes the formation of a compacted ring of target material observed around the boreholes in recovered targets. Applying fundamental laws of motion to an element during the formation of the ring leads to estimates for the three stresses that control the penetration event. A retarding force on the projectile nose is derived and then used to arrive at an es

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Jones, S. E., J. C. Foster, O. A. Toness, R. J. DeAngelis, and William K. Rule. "An Estimate for Mass Loss From High Velocity Steel Penetrators." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1149.

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Analytical models of the penetration process focus on estimating depth of penetration based on target density, target strength (sometimes associated with the unconfined compressive strength of the target for geological targets), the areal density of the penetrator (W/A), and the impact velocity. In this paper, an expression for work is used in conjunction with thermodynamic considerations to devise a simple estimate for mass lost by a high velocity projectile during the penetration process. The result shows that the mass loss is directly proportional to the tunnel length and the target shear s

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Stoltz, Brian C., Melissa D. Hankins, Karen L. Torres, and Stanley E. Jones. "Penetration of Fine Foundry Sand by Rigid Projectiles." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93635.

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In another paper [1], the authors presented an approach to penetration of a particulate target. This theory is based on the friction that the particles of target material present to the entire penetrator surface, including its shank. The shank of the penetrator affords a very large surface area compared to that of the nose. Even modest friction acting on the shank can provide a fairly large retarding force. Normal pressure acting on the projectile is assumed to be velocity-squared dependant, as indicated by a number of methods, including cavity expansion modeling [2]. Penetration of sand and s

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ZANG, LI-WEI, WEI-DONG SONG, BIN QIN, and WEN-MIN YAN. "EFFECT ON PREMADE SEPARABLE LESS-PENETRATING PROJECTILE PENETRATING GELATIN TARGET." In 32ND INTERNATIONAL SYMPOSIUM ON BALLISTICS. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/ballistics22/36192.

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Less-penetrating projectile has the capability of less penetration and high execution, it attracts international scientific interests for suitability for antiterrorism and anti-hijack. a new projectile which has the structure of pole mushroom shaped cap—premade separable half ring core—indenting jacket were designed for treatment and improving the capability of less penetration and high execution. Both testing and calculation data of 92A pistol projectile and 9mm pistol projectile proved the feasibility of new projectiles design. The result indicates that energy release of “jacket peeled—cap p

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Gillis, Peter P., Joel W. House, and S. E. Jones. "Penetration by Long Rods." In ASME 1992 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/cie1992-0104.

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Abstract This paper relates to the penetration of large, massive targets by long rods where target penetration is accompanied by rod erosion. A principal criticism of previous analyses of this problem by the present authors was the use of post test measurements to furnish input information for calculations. Thus, the analyses had no truly predictive capability. In particular, the profile hole diameter of the experimental target crater was previously employed as a measure of mushroom strain at the penetrator tip. Because this strain value has a significant effect on calculated penetration depth

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Loveless, Justin T., Jennifer M. Conway, Mark E. Barkey, and Stanley E. Jones. "Compaction Ring Analysis of Concrete Penetration." In ASME 2012 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/pvp2012-78733.

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The purpose of this paper is to report the results of laboratory scale penetration tests on aged fine particle concrete targets. Hardened 4340 steel (RC-50) projectiles were fabricated with ogive noses and flat ends for the purpose of the tests. The projectiles were 0.164 inches in diameter with varying lengths. The projectiles were launched from a 0.167 inch smooth bore powder gun, and the impacts were normal to the face of the target. The targets were small enough to permit two methods of measurement to find the penetration depth: direct measurement from the back of the projectile and x-rays

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Walters, William P., and Cyril L. Williams. "The Influence of Armor Material Parameters on the Penetration by Long-Rod Projectiles." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93716.

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The Alekseevski-Tate equations have long been used to predict the penetration, penetration velocity, rod velocity, and rod erosion of long-rod projectiles or kinetic-energy penetrators [1]. These nonlinear equations were originally solved numerically, then by the exact analytical solution of Walters and Segletes [2, 3]. However, due to the nonlinear nature of the equations, the penetration was obtained implicitly as a function of time, so that an explicit functional dependence of the penetration on material properties was not obtained. Walters and Williams [4, 5, 6] obtained the velocities, le

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QI, YUXUAN, LIANG MAO, CHUNLAN JIANG, et al. "EXPERIMENTAL AND NUMERICAL STUDY ON EFP PENETRATING UNDERWATER DOUBLE-LAYER TARGETS." In 32ND INTERNATIONAL SYMPOSIUM ON BALLISTICS. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/ballistics22/36141.

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In order to investigate the damage efficiency of smart micro torpedo armed with EFP warhead, and to reveal its penetration ability, experiment and simulation of EFP forming and penetrating underwater double-layer targets are carried on. In this paper, influence of the distance between EFP warhead and targets underwater is studied, which covers 0, 40, 120, 200, 280mm depth of water. In addition, a penetrator is exceeded by different kinds of buffer materials. The experiments show that, compared with EFP in the air, EFP formed by underwater weapon results in smaller holes on the double-layer tar

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Gilmore, Martin R., S. E. Jones, and Joseph C. Foster. "Penetration of a Rate Sensitive Geological Target by the Compaction Ring Theory." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1155.

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In an earlier paper, the authors presented a theory for the penetration of geologically based semi-infinite targets [5]. This theory was suitable for application to targets in which compaction due to the crushing of voids is the primary deformation mechanism. This phenomenon has been observed in concrete targets with a ring of dense material around the tunnel region, see figure 1 for a cat scan of a concrete target after penetration. This was the motivation for the model development. A number of simplifying assumptions were made in the application of the theory to data from concrete penetratio

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Звіти організацій з теми "Target penetration"

Antoun, T., O. Vorobiev, S. Ezzedine, E. Herbold, and L. Aarons. Predictive Models for Target Response During Penetration. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1179395.

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Jung, Joe, Donald B. Longcope, and Mazen R. Tabbara. Modeling of Oblique Penetration into Geologic Targets Using Cavity Expansion Penetrator Loading with Target free-Surface Effects. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/7224.

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Longcope, D. B. Jr. Oblique penetration modeling and correlation with field tests into a soil target. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/383561.

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Zukas, J. A. Numerical Simulation of Semi-Infinite Target Penetration by Continuous and Segmented Rods. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada219437.

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Tuley, M. T., T. C. Miller, and R. J. Sullivan. Ionospheric Scintillation Effects on a Space-Based, Foliage Penetration, Ground Moving Target Indication Radar. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada407771.

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Abdulrahman, Salamatu, Mohammed Alhaji, Muhammad Balarabe, Oluwadarasimi Emehinola, Zeenat Kabir, and Doluwamu Solana. What impact does social media have on Nigeria’s digital creative economy? Busara, 2025. https://doi.org/10.62372/benc5382.

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At the start of 2023, there were 122.5 million internet users in Nigeria with internet penetration at 55.4%. More than 31.6 million Nigerians use social media, equivalent to 14.3% of the total population. Social media, as part of the digital creative economy, has provided employment opportunities to a lot of Nigerians and served as a platform to showcase to the world the cultural richness of Nigeria. Meta created a feel good, celebratory campaign that conveyed the catalytic power of social media to empower Nigerians. The campaign was intended to make Nigerians feel proud about their culture, t

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Lovera, Andrea, Mariano Belaich, Cindy Mejía, Laura Villamizar, Manuel A. Patarroyo,, and Gloria Barrera. Characterization of chitinases of Beauveria bassiana (Bv ) induced in semisolid-state fermentation. Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, 2012. http://dx.doi.org/10.21930/agrosavia.poster.2012.11.

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A major consideration in the development of biopesticides based on entomopathogenic fungi has been the virulence and pathogenicity in terms of mean time of mortality and mean lethal concentration against the target insect. Virulence factors as chitinases degrade insect chitin facilitating the hyphal penetration through the cuticle. In this sense, Beauveria bassiana chitinases are an important cuticle-degrading group of enzymes implicated in the pathogenesis to insects, with high potential to develop biotechnological tools for in pest control. The aim of this study was to characterize chitinase

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Forrestal, M. J., J. D. Cargile, and R. D. Y. Tzou. Penetration of concrete targets. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10180160.

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Stone, G. W. Projectile penetration into representative targets. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10194662.

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Coyner, Kelley, and Jason Bittner. Automated Vehicles and Infrastructure Enablers: Dedicated Lanes. SAE International, 2025. https://doi.org/10.4271/epr2025007.

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<div class="section abstract"><div class="htmlview paragraph">Dedicated lanes provide a simpler operating environment for ADS-equipped vehicles than those shared with other roadway users including human drivers, pedestrians, and bicycles. This final report in the Automation and Infrastructure series discusses how and when various types of lanes whether general purpose, managed, or specialty lanes might be temporarily or permanently reserved for ADS-equipped vehicles. Though simulations and economic analysis suggest that widespread use of dedicated lanes will not be warranted until

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