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Journal articles on the topic 'Explosive strength'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Savaş, Sedat, and Dursun Bakir. "An experimental study on the blast responses of hollow core concrete slabs to contact explosions." Revista de la construcción 21, no. 3 (2022): 587–601. http://dx.doi.org/10.7764/rdlc.21.3.587.

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Measures taken against preventing damages in structures against explosive load are a popular matter of investigation among researchers. Generally, numerous studies were conducted on reinforcement materials for outer surfaces, reinforcement design, and utilizing fibers produced from various materials. In this study, a hollow-core slab was manufactured with concrete, which had a regular strength, and a design that discharged the explosive energy upon contact explosion via the hollow cores of the slabs and prevented the redirection of the explosive energy to the area below the slabs was investiga

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2

Wang, Hai Liang, Xin Ming Li, and Jian Xin Yu. "Compressive Strength of Hardening Fluid Concrete by Explosion." Advanced Materials Research 163-167 (December 2010): 4595–98. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.4595.

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The explosion of fluid concrete under different explosive dosage is achieved by experiment as the main study means. After hardening, we carry out its compressive strength test by Shimadzu AG-X250kN electronic universal pressure machine. The experiment shows that compressive strength of hardening fluid concrete by explosion is higher than that in the same state. Explosive can increase compressive strength of concrete material.

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Zlobin, B., V. Sil’Vestrov, A. Shtertser, A. Plastinin, and V. Kiselev. "Enhancement of Explosive Welding Possibilities by the Use of Emulsion Explosive/ Rozwój Mozliwości Łączenia Wybuchowego Przez Użycie Emulsji Wybuchowych." Archives of Metallurgy and Materials 59, no. 4 (2014): 1587–92. http://dx.doi.org/10.2478/amm-2014-0269.

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Abstract Explosive welding is an effective method of joining of various metals and alloys. However, when the materials with very different strength and thermo-physical properties are welded or thin-layer cladding is performed, the difficulties occur which call for extra investigations. In the present paper, with the couples of steel / carbide composite and copper / hardened steel used as examples, under study were the peculiarities of bonding formation by the explosive welding of metals with highly differing properties. The experiments were carried out with emulsion explosive containing hollow

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Itoh, S., Z. Liu, and Y. Nadamitsu. "An Investigation on the Properties of Underwater Shock Waves Generated in Underwater Explosions of High Explosives." Journal of Pressure Vessel Technology 119, no. 4 (1997): 498–502. http://dx.doi.org/10.1115/1.2842336.

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A cylinder expansion test for high explosives was carried out to determine JWL parameters. Using the JWL parameters, we carried out numerical simulations of the underwater shock waves generated by the underwater explosion of the high explosives. Our results showed that the behavior of the underwater shock waves at the vicinity of the explosives differs greatly from that far from the explosives. Especially, the strength of the underwater shock wave nearby the explosive rapidly decreases due to the effect of the expansion of the gas products.

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Jitea, Ilie-Ciprian, Daniela Carmen Rus, Cristian Rădeanu, and Dragoş Gabriel Vasilescu. "Evaluation of the safety parameters for a permitted explosive type emulsion." MATEC Web of Conferences 342 (2021): 01002. http://dx.doi.org/10.1051/matecconf/202134201002.

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When preparing a permitted explosive recipe an energy or an explosive heat is considered, which should ensure the detonability of the system and at the same time a power that satisfies the purpose for which it will be used, under the conditions of firedamp hazardous mines. The safety parameters for the explosive charges used in the firedamp hazardous mines are decisive, in order to ensure the safety and health requirements at work together with the efficient performance of the blasting operation. The permitted explosive type emulsion is recommended to be used in underground mines, open pit min

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Zhang, Guo Shang, Shu Zeng Hou, Shi Zhong Wei, Ji Wen Li, and Liu Jie Xu. "Interface Structure and Properties of Explosive Welded Beryllium Bronze/Steel Composite Plates." Applied Mechanics and Materials 52-54 (March 2011): 1598–602. http://dx.doi.org/10.4028/www.scientific.net/amm.52-54.1598.

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In this study, beryllium bronze/steel composite plates were fabricated through explosive welding process using different ratios of explosive. Microstructures of the joint were examined, and then shearing strength, peeling strength, Bending tests and hardness measurements were carried out on the bonded specimens. Experimental studies show that, beryllium bronze and steel could be bonded with a good quality. The interface is wavy texture changing in turns from flat - wavelet - large wave - stable large wave beginning with initiation point. Grains near the interface are elongated parallel to the

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Li, Lin Na, Dong Wang Zhong, and Chao Zhang. "Engineering Design of Underwater Explosive Containment Vessels." Applied Mechanics and Materials 303-306 (February 2013): 2831–34. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.2831.

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Underwater explosion vessel is the main equipment to experimentally study the law of underwater explosion by small quantity of explosive. It is the main equipment of explosive metalworking. In order to the safe using of underwater explosion container and the efficiency, we must accurately determine the strength of the container. Based on the actual engineering design, the brief summary about engineering design method of 10gTNT equivalent deep water explosion vessel has carried on.

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8

Şahin, Murat, and Sedat Tulumcu. "Numerical Analysis of Explosion-Induced Deformations on Steel Panels in Urban Environments." Hacettepe Journal of Biology and Chemistry 52, no. 5 (2024): 267–81. https://doi.org/10.15671/hjbc.1574877.

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Explosion proof structures are designed to be very heavy and non-functional using conventional systems so that they can be resistant to blast effects. As a result, not only the emergence of non-economic structures, but also their operational performance decreases. To effectively mitigate these challenges, a substantial body of research has focused on the development and application of designs and materials specifically engineered to withstand explosive load impacts. In this study, the strength of steel plates under explosives with different energies was tested. Related tests were performed usi

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9

Skobenko, O.V., and V.V. Kulivar. "ODAY OF THE RESULTS OF RESEARCH ON THE INTERACTION OF LASER RADIATION WITH EXPLOSIVES." Annali d'Italia 51 (January 26, 2024): 36–52. https://doi.org/10.5281/zenodo.10573849.

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The paper presents the main scientific and practical results obtained by the scientists of the Dnipro Polytechnic Institute in 1992-2022. The basis of the proposed physical and mathematical model, taking into account quantum mechanical laws, is the discovered new mechanism of ignition of metal azides by a laser monopulse, due to the structural destabilization of the crystal lattice when heated by radiation of optical microinhomogeneities. Attention is focused on the developed new methods for measuring the sensitivity of explosives and the parameters of the mechanical action of explos

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10

Gloc, Michał, Sylwia Przybysz-Gloc, Marcin Wachowski, et al. "Research on Explosive Hardening of Titanium Grade 2." Materials 16, no. 2 (2023): 847. http://dx.doi.org/10.3390/ma16020847.

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In this investigation, three different explosive materials have been used to improve the properties of titanium grade 2: ammonal, emulsion explosives, and plastic-bonded explosives. In order to establish the influence of explosive hardening on the properties of the treated alloys, tests were conducted, including microhardness testing, microstructure analysis, and tensile and corrosion tests. It has been found that it is possible to achieve a 40% increase in tensile strength using a plastic explosive (PBX) as an explosive material. On the other hand, the impact of the shock wave slightly decrea

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Hou, Juewen, and Tielu Li. "EFFECT OF AIR ENDURANCE TRAINING ON ATHLETE’S LOWER LIMB EXPLOSIVE STRENGTH." Revista Brasileira de Medicina do Esporte 28, no. 5 (2022): 513–16. http://dx.doi.org/10.1590/1517-8692202228052022_0068.

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ABSTRACT Introduction: The explosion force is the neuromuscular system's capacity to overcome resistance with the highest possible contraction speed. It is the result of a kinetic combination between power and speed. The effect of outdoor resistance training is used in several athletics areas to improve the explosive power of the lower limbs. However, there are still few studies focused on basketball athletes. Objective: Verify the effect of outdoor resistance training on the explosive power of the lower limbs of basketball players. Methods: The article uses mathematical statistics and randomi

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Zhang, Peng. "Research on Maximum Explosive Strength and Training Methods." Journal of Education and Educational Research 10, no. 2 (2024): 142–44. http://dx.doi.org/10.54097/1qcfr260.

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Explosive force is a form of fast power performance, explosive force athletes an important part of the overall level of athletic ability, the athletes' athletic performance enhancement has a vital important role, the vast majority of sports programs have a profound significance. But from the current athletes special explosive force training situation to discuss, many athletes explosive force training often lack of specialization and effectiveness, omitted the training of special explosive force, is not conducive to the athletes personal escape performance improvement. The article mainly uses t

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13

Hiroe, Tetsuyuki, Kazuhito Fujiwara, Hidehiro Hata, K. Watanabe, and Mitsuharu Yamamoto. "Mechanical Changes in Materials Caused by Explosive Precompression Shock Waves and the Effects on Fragmentation of Exploding Cylinders." Materials Science Forum 566 (November 2007): 237–42. http://dx.doi.org/10.4028/www.scientific.net/msf.566.237.

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Explosive driven rapid fracture in a structural body will be preceded by a compression process, and the compression effects on mechanical properties of the materials are clearly important to understand shock-induced failure such as spall or fragmentation phenomena. In this study, incident shock waves in plate specimens of aluminum A2017-T4 and 304 stainless steel are generated by plane detonation waves in the high explosive PETN initiated using wire-row explosion techniques, and the compressed specimens are successfully recovered without severe damages due to the reflected expansion waves with

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14

Park, Gang-Kyu, Gi-Joon Park, Jung-Jun Park, Namkon Lee, and Sung-Wook Kim. "Residual Tensile Properties and Explosive Spalling of High-Performance Fiber-Reinforced Cementitious Composites Exposed to Thermal Damage." Materials 14, no. 7 (2021): 1608. http://dx.doi.org/10.3390/ma14071608.

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This study examined the effect of adding synthetic fibers, that is, polypropylene (PP) and nylon (Ny), on explosive spalling and residual tensile mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs). Three different matrix strengths (100 MPa, 140 MPa, and 180 MPa), four different volume contents of the synthetic fibers (0%, 0.2%, 0.4%, and 0.6%), and three different exposure time (1 h, 2 h, and 3 h) based on the Internatinoal Organization for Standardization (ISO) fire curve were adopted as variables for this experiment. The experimental results revealed

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15

Liao, Xue Yan, Fu Qiang Shi, Zhao Wu Shen, Yao Gang Jiang, and Zhi Gang Gong. "Enhancement of Explosion Energy and Mechanical Strength of Energetic Material by Aluminum Fibre." Applied Mechanics and Materials 268-270 (December 2012): 559–62. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.559.

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In order to enforce explosion energy and mechanical strength of energetic material. we use physics and chemistry property of aluminum fire to improve the performance of energetic material. Before explosion the physics property of mechanical property can reinforce the mechanical strength; when explosion the reaction heat of aluminum can increase the energy of explosive. The air blast experimental results indicated that Al fibre can increase the energy of energetic material.. And the same time mechanical strength experimental results indicated that aluminum can enhance the strength of energetic

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16

Laszlo, Robert, Edward Gheorghiousu, Stefan Ilici, Aurelian Nicola, and Stefan Usurelu. "Testing the constructive strength of a container arranged as a mobile deposit of explosive materials." MATEC Web of Conferences 373 (2022): 00058. http://dx.doi.org/10.1051/matecconf/202237300058.

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Today, due to the diversity of the conditions in which the blasting works are executed, they often require a special organization regarding the transportation and storage of the explosive goods near the blasting field. If for explosive storage arranged for long-term use such as those of the producers, there are detailed regulations regarding the constructive and security requirements that they must meet, for the temporary storage facilities, there are not enough details regarding the constructive requirements that they must comply with. One of the most important aspects taken into account when

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17

Kononenko, M., O. Khomenko, and A. Kosenko. "Numerical simulation of the line of least resistanceduring the explosion of charges." Collection of Research Papers of the National Mining University 69 (June 2022): 43–57. http://dx.doi.org/10.33271/crpnmu/69.043.

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Purpose. To establish the analytical regularity of the calculation of the maximum value of the line of least resistance (LLR) of the explosive (E), taking into account the physical and mechanical properties of the rock mass and the detonation characteristics of the explosive. The methodology of research. Numerical modeling by the finite element method (FEM) to change the stress-strain state of the model established the value of the LLR at different diameters of the charge cavity, the pressure of explosion products and the tensile strength of rocks. Regression analysis obtained an empirical pat

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18

Bardaro, Danilo, Alessandro Bozzolo, and Donato Zangani. "Advanced Technologies for Bombproof Cargo Containers and Blast Containment Units for the Retrofitting of Passenger Airplanes." International Journal of Aviation Systems, Operations and Training 2, no. 1 (2015): 33–47. http://dx.doi.org/10.4018/ijasot.2015010103.

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Commercial aviation can be protected from the threat of explosives in two ways, either by preventing explosives from reaching the aircraft or by mitigating the effects of an explosive by protecting the aircraft from an onboard explosion. The containment units under study aim at acting as complementary and passive security measures for passengers and cabin crew. The proposed concept is a container where an internal high strength layer made of ballistic textiles is used to stop blast fragments, coupled with an external layer deforming in a controlled way during the explosion, designed to fully c

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19

Zhang, Jing, Zhuowei Guo, Shengjun Sang, et al. "Preparation of bulk nano-aluminum materials from nanopowder using explosive consolidation." Journal of Applied Physics 131, no. 16 (2022): 165904. http://dx.doi.org/10.1063/5.0088053.

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To optimize powder explosive consolidation technology, an improved explosive consolidation device capable of relieving pressure was designed. Bulk nano-aluminum materials achieving more than 98% of standard density were successfully fabricated by explosive consolidation. The effect of different detonation velocities on the properties of the consolidated aluminum was investigated by varying the ratio of the ammonium nitrate explosive (AN-TNT) and wood flour to adjust the detonation velocity. The results revealed that the production of “Mach holes” (defects produced by excess energy in a converg

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20

Pérez Muñoz, S., D. Morilla de la Riva, G. Alonso García, A. Sánchez Muñoz, FJ Albert García, and A. Rodríguez Cayateno. "Efecto del entrenamiento de fuerza en deportistas femeninas de deportes colectivos mediante tecnología isoinercial." SPORT TK-Revista EuroAmericana de Ciencias del Deporte 10, no. 1 (2021): 79–86. http://dx.doi.org/10.6018/sportk.461691.

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El objetivo de esta investigación es analizar el efecto de un programa de fuerza mediante tecnología isoinercial durante cuatro semanas, en la mejora del rendimiento en mujeres de deportes colectivos con carácter intermitente. La muestra estaba compuesta por seis mujeres con una edad media de 21±1.79 años. Se realizaron los test de cambios de dirección V-cut, fuerza explosiva counter movement jump y repeated sprint ability sobre 40 m. Los principales resultados muestran que se mejoraron todas las variables analizadas mediante el entrenamiento con tecnología isoinercial. Además, presentaron dif

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21

Kosturek, Robert. "The concept of improvement high-strength aluminum alloys FSW joint properties via post-weld explosive treatment." Scientific journal of the Ternopil national technical university 107, no. 3 (2022): 125–30. http://dx.doi.org/10.33108/visnyk_tntu2022.03.125.

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The study describes the theoretical background and technological aspects of the post-weld explosive treatment of high-strength aluminum alloy FSW joints. Although FSW allows to effective join high-strength aluminum alloys, the heat generated during the process causes undesirable changes in the strengthening phase, giving a joint efficiency of about 80%. The load-carrying capabilities of these joints can be increased via post-weld treatment (e.g. shot peening, laser shock peening). The new, potential post-weld treatment that is presented in this paper is based on the affection of the welded joi

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Saravanan, S., and K. Raghukandan. "Diffusion Kinetics in Explosive Cladding of Dissimilar Alloys as Described through the Miedema Model/ Kinetyka Procesu Dyfuzji W Układach Platerów Wytwarzanych Z Wykorzystaniem Energii Wybuchu, Na Bazie Stopów O Silnie Odmiennych Właściwościach, Opisanych Modelem Miedema." Archives of Metallurgy and Materials 59, no. 4 (2014): 1615–18. http://dx.doi.org/10.2478/amm-2014-0274.

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Abstract Explosive cladding of dissimilar plates is achieved by the intensive deformation occurring at high pressure and temperature generated from the detonating explosive at the collision interface. The interface morphology, with its characteristic undulations, is dictated by the extent of kinetic energy spent at the mating interface. Nevertheless, the inter-metallic compound formation at the mating interface weakens the joint. The prediction of the probability of inter-metallic formation at aluminum-SS 304, copper-SS 304 and titanium-SS 304 explosive cladding interfaces is attempted in this

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Kuz'min, V. I., V. I. Lysak, and E. V. Kuz’min. "Investigation of the Influence of Kinematic and Energy Parameters on the Structure and Strength of Explosion-Welded Steel-Aluminum Composite." Solid State Phenomena 316 (April 2021): 62–67. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.62.

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The work is devoted to a study of the probable causes of a decrease in joint strength during explosion welding of metals with sharply differing physical and mechanical properties. The influence of kinematic and energy parameters on the structure and strength of the steel-aluminum composite under various conditions of explosive loading is shown.

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Liu, Hua Ning, Yu Zheng, Jian Bo Liu, and Wen Bin Li. "The Effect of Tube Materials on Metal Jet Initiating the Confined Composition B." Advanced Materials Research 1014 (July 2014): 175–79. http://dx.doi.org/10.4028/www.scientific.net/amr.1014.175.

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The implementation and validation of a numerical model of the confined Composition B initiated by a metal jet has been studied by AUTODYN-2D. Two different tube thicknesses were used representing strong and weak confinement initiating system. In another contrast, various materials such as Nylon, St45 and Tungsten alloy were adopted to investigate the influence of tube yield stress on the confined explosives initiation behaviour. The results show that, in both cases, the confined explosive is always more likely to be initiated than bare explosive, and the explosive initiation probability increa

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Yan, Qiushi, Chen Liu, Jun Wu, Jun Wu, and Tieshuan Zhuang. "Experimental and Numerical Investigation of Reinforced Concrete Pile Subjected to Near-Field Non-Contact Underwater Explosion." International Journal of Structural Stability and Dynamics 20, no. 06 (2020): 2040003. http://dx.doi.org/10.1142/s0219455420400039.

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High-pile wharf is an important port structure and may suffer from accidental explosions or terrorist bombing attack during the service life. The reinforced concrete (RC) pile is one of the popular vertical load-bearing piles of high-pile wharf structure. As a main load-bearing member of the high-pile wharf structure, the damage of RC pile due to underwater explosive may cause subsequently progressive collapse of the whole structure. In this paper, the dynamic response and failure mode of RC pile in high-pile wharf structure under the near-field non-contact underwater explosion are investigate

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Monteiro, Luís Fernandes, Massuça, L. M. Massuça, L.M, García-García, JM García-García, JM, and Calvo-Rico, B. Calvo-Rico, B. "Differences of Explosive Strength in Judokas Medallists and Not Medallists." Paripex - Indian Journal Of Research 3, no. 5 (2012): 199–202. http://dx.doi.org/10.15373/22501991/may2014/61.

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Castro jimenez, Laura Elizabeth, Angela Yazmin Galvez Pardo, Gustavo Andres Guzman Quintero, and Ana Isabel Garcia Muñoz. "Fuerza explosiva en adultas mayores, efectos del entrenamiento en fuerza máxima (Explosive strength in older adults, training effects on maximum strength)." Retos, no. 36 (January 12, 2019): 64–68. http://dx.doi.org/10.47197/retos.v36i36.66715.

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Introducción. En los adultos mayores existe una disminución de la fuerza muscular que es más significativa en mujeres que en los hombres. Objetivo. Conocer los cambios que en fuerza explosiva puedan generarse, posterior a la intervención con un programa de entrenamiento en fuerza máxima. Materiales y Métodos. Estudio cuasiexperimental con diseño pre-prueba y post-prueba, en una cohorte de adultas mayores quienes durante 12 semanas, recibieron entrenamiento en fuerza máxima, entre un 44% y un 54% de su RM. Los criterios de inclusión fueron, ser adultas mayores (≥60 años), con índice de masa cor

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Igor, Ilić, Durlević Slavka, Bubanj Saša, Bjelica Bojan, Aksović Nikola, and Dobrescu Tatiana. "Impact of Explosive Strength on Shot Speed in Handball." GYMNASIUM 24, no. 2 (2023): 109–19. http://dx.doi.org/10.29081/gsjesh.2023.24.2.07.

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Shooting is among the most important elements of the handball game that determine the success of the result. The aim of this research was to examine the impact of explosive strength on the shot speed of handball players. The sample of participants consisted of 20 handball players, aged 18 to 30 ± 0.3 years. The sample of measuring instruments consisted of five variables for evaluating explosive strength and four variables for evaluating shot speed in handball. The impact of explosive strength on shot speed in handball was determined using linear regression analysis. The results showed that the

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Xie, Zhi Ying, Ji Ke Tan, Hui Yang, and Jin Yu Pan. "Research on the Characteristics of Steel Frame Node under Explosive and Impact Load." Advanced Materials Research 779-780 (September 2013): 1188–93. http://dx.doi.org/10.4028/www.scientific.net/amr.779-780.1188.

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With the characteristics of huge energy,short acting time and large destructiveness, Explosive and Impact Load leads a large punching force towards construction units. Once happened, it can cause serious of damaging effects. Therefore,the explosion protection performance of construction is being more and more concerned[1].The large finite element analysis software ABAQUS is being used to deal with numerical simulation of cross steel frame node, to analyses the response of the steel frame node and to discusses different steel material parameters on the influence of the nodes dynamic response un

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Dr.D.Maniazhagu, Kannadasan Mr., and Ms.S.Malar. "EFFECTS OF EXPLOSIVE STRENGTH AND STRENGTH ENDURANCE BASED CIRCUIT TRAINING ON SPEED PERFORMANCE." International Journal of Research - Granthaalayah 5, no. 8SE (2017): 76–82. https://doi.org/10.5281/zenodo.888019.

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The purpose of the study was to find out the effects of explosive strength and strength endurance based circuit training on speed performance. To achieve the purpose of the study, thirty boys’ student in the age group 13 to 14 were selected as subjects at random. The selected subjects were from RCM High School, Natarajapuram, Sivagangai(DT), Tamilnadu. The study was formulated as pre and post-test random group design, in which thirty students were divided into three equal groups. The experimental group-1 (n=10, ESbCT) underwent explosive strength based circuit training, the experimental group-

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Maniazhagu, D., Kannadasan, and S. Malar. "EFFECTS OF EXPLOSIVE STRENGTH AND STRENGTH ENDURANCE BASED CIRCUIT TRAINING ON SPEED PERFORMANCE." International Journal of Research -GRANTHAALAYAH 5, no. 8(SE) (2017): 76–82. http://dx.doi.org/10.29121/granthaalayah.v5.i8(se).2017.2251.

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The purpose of the study was to find out the effects of explosive strength and strength endurance based circuit training on speed performance. To achieve the purpose of the study, thirty boys’ student in the age group 13 to 14 were selected as subjects at random. The selected subjects were from RCM High School, Natarajapuram, Sivagangai(DT), Tamilnadu. The study was formulated as pre and post-test random group design, in which thirty students were divided into three equal groups. The experimental group-1 (n=10, ESbCT) underwent explosive strength based circuit training, the experimental group-

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32

Yadav, Pramod Kumar, and Santosh Kumar Gupta. "The Impact of Explosive Strength Training on Long Jump and Triple Jump Performance: A Pre-Post Intervention Study." International Journal of Physical Education & Sports Sciences 20, no. 1 (2025): 1–12. https://doi.org/10.29070/aehraq78.

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This study investigated the effect of a special explosive strength training plan on the performance and physical capacities of long jump and triple jump athletes. Forty participants underwent pre- and post-training assessments measuring jump distances alongside leg, hand, and abdominal explosive strength. Descriptive statistics revealed marked improvements across all variables following the intervention. Paired t-test analyses confirmed these gains were statistically significant (p < .001) for both jump performance and explosive strength measures. Repeated measures ANOVA further demonstrate

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Maden-Wilkinson, T. M., T. G. Balshaw, G. J. Massey, and J. P. Folland. "Muscle architecture and morphology as determinants of explosive strength." European Journal of Applied Physiology 121, no. 4 (2021): 1099–110. http://dx.doi.org/10.1007/s00421-020-04585-1.

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Abstract Purpose Neural drive and contractile properties are well-defined physiological determinants of explosive strength, the influence of muscle architecture and related morphology on explosive strength is poorly understood. The aim of this study was to examine the relationships between Quadriceps muscle architecture (pennation angle [ΘP] and fascicle length [FL]) and size (e.g., volume; QVOL), as well as patellar tendon moment arm (PTMA) with voluntary and evoked explosive knee extension torque in 53 recreationally active young men. Method Following familiarisation, explosive voluntary tor

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Xia, Zhiqun, Haitao Wang, Changgen Shi, Zerui Sun, Qiang Wang, and Xvchuan Luo. "Analysis and Characterization of Three Charge Thicknesses in TA1/Al1060/Al7075 Explosive Welding Composite Process." Crystals 13, no. 7 (2023): 1079. http://dx.doi.org/10.3390/cryst13071079.

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The titanium/aluminum composite materials overcome the limitations of single metal materials and achieve lightweight, high-strength, and corrosion-resistant properties. However, there have been no reports on explosion-welded composites of titanium alloys and seven-series aluminum alloys. Therefore, TA1/Al1060/Al7075 explosion-welded plates with three different explosive thicknesses were successfully prepared using Al1060 as the transition layer. The SPH-FEM coupled algorithm was employed to analyze the detonation process in detail and predict the interface under different explosive thicknesses

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Alexandru, Oprean, Puni Alexandru-Rares, Ungurean Bogdan-Constantin, and Cojocariu Adrian. "Explosive strength evolution of Romanian professional rugby players – Backs." New Trends and Issues Proceedings on Humanities and Social Sciences 8, no. 3 (2021): 37–43. http://dx.doi.org/10.18844/prosoc.v8i2.6159.

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The purpose of this study is to highlight the evolution of the explosive strength in the 4-year interval of the backs compartment and the level of adaptation to the game requirements. The hypothesis in this study is that the explosive strength of the lower limbs in rugby backs developed during the past 4 years, trying to keep up with the higher needs in the first Romanian league. Explosive power was measured using the ‘Just Jump System’, which is a plyometric test mat on which the players conducted a set of three tests: squat jump, control movement jump and free jump. The forwards significantl

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Utamayasa, I. Gede Dharma, Hari Setijono, and Oce Wiriawan. "The Effect of Plyometric Exercise towards Agility, Speed, Strength and Explosive Power of Leg Muscle." Sport i Turystyka. Środkowoeuropejskie Czasopismo Naukowe 3, no. 3 (2020): 81–88. http://dx.doi.org/10.16926/sit.2020.03.22.

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The aim of this research is to investigate the effect of hurdle box drill with the stick, jump and speed hurdle lateral, and lateral hurdle jump exercises on agility, speed, strength, and explosive power of leg muscles. The sample group of the study consisted of 33 students who participated in badminton FIO UNESA. The methodology used was quantitative research with quasi-experimental methods. The result showed that group I had enhancement on the muscular strength of the limbs for 2.89, speed for −0.003, agility 0.1 and leg muscle explosive power for 1.42. Group II had the strength of the lower

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Gałka, A., and M. Najwer. "Explosive Cladding of Titanium and Aluminium Alloys on the Example of Ti6Al4V-AA2519 Joints / Wybuchowe Platerowanie Stopów Tytanu I Aluminium Na Przykładzie Połączenia Ti6Al4V-AA2519." Archives of Metallurgy and Materials 60, no. 4 (2015): 2985–92. http://dx.doi.org/10.1515/amm-2015-0477.

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Explosive cladding is currently one of the basic technologies of joining metals and their alloys. It enables manufacturing of the widest range of joints and in many cases there is no alternative solution. An example of such materials are clads that include light metals such as titanium and aluminum. ach new material combination requires an appropriate adaptation of the technology by choosing adequate explosives and tuning other cladding parameters. Technology enabling explosive cladding of Ti6Al4V titanium alloy and aluminum AA2519 was developed. The clads were tested by means of destructive a

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Saha, Gopa. "A Comparative Study on Explosive Strength and Reaction ability between Female Kabaddi and Kho Kho Players." Journal of Advances in Sports and Physical Education 5, no. 6 (2022): 123–28. http://dx.doi.org/10.36348/jaspe.2022.v05i06.003.

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Background: Competitive game requires high level of skill related fitness including reaction time and explosive strength in kabaddi and kho-kho games to perform frequently higher level of performance. Objective: The purpose of the study is to find out the difference of explosive strength and reaction ability between junior level female kabaddi and kho kho players. Method: Fifty junior level female kabaddi players and fifty kho kho players were requited in this study from different sports club in West Bengal. The age of the subjects ranged between 14 to 16 years. Explosive strength and reaction

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Pfeifle, Jonas, David Hasler, and Nicola A. Maffiuletti. "Should We Use Unilateral or Bilateral Tasks to Assess Maximal and Explosive Knee Extensor Strength in Patients with Knee Osteoarthritis? A Cross-Sectional Study." Journal of Clinical Medicine 10, no. 19 (2021): 4353. http://dx.doi.org/10.3390/jcm10194353.

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Deficits in maximal and explosive knee extensor strength, which are usually assessed with unilateral tasks, are substantial in patients with knee osteoarthritis (KOA). The aim of this study was to investigate the clinical relevance of unilateral vs. bilateral tasks for assessing knee extensor strength in patients with KOA. This was achieved primarily by comparing unilateral and bilateral inter-limb strength asymmetries and secondarily by examining the relationship between unilaterally and bilaterally measured strength, and performance-based and self-reported function. Twenty-four patients with

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Dotto, Magreth S., and Yashar Pourrahimian. "The Influence of Explosive and Rock Mass Properties on Blast Damage in a Single-Hole Blasting." Mining 4, no. 1 (2024): 168–88. http://dx.doi.org/10.3390/mining4010011.

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In rock blasting for mining production, stress waves play a major role in rock fracturing, along with explosive gases. Better energy distribution improves fragmentation and safety, lowers production costs, increases productivity, and controls ore losses and dilution. Blast outcomes vary significantly depending on the choice of the explosive and the properties of the rock mass encountered. This study analyzes the effects of rock mass and explosive properties on blast outcomes via numerical simulation using data from the case study, and later validates the simulation results from the field blast

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Beunen, Gaston, Martine Thomis, Maarten Peeters, Hermine H. Maes, Albrecht L. Claessens, and Robert Vlietinck. "Genetics of Strength and Power Characteristics in Children and Adolescents." Pediatric Exercise Science 15, no. 2 (2003): 128–38. http://dx.doi.org/10.1123/pes.15.2.128.

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The aim of this study is to quantify the genetic and environmental variation in isometric and explosive strength (power) in children and adolescents, using structural equation models. Arm pull (static strength) and vertical jump (explosive strength, power) were measured in 105 twin pairs from the Leuven Longitudinal Twin Study. Boys and girls were tested at annual intervals between 10 and 16 years and at 18 years. Path models were fitted to the observed strength characteristics and a gender heterogeneity analysis was performed at each age level. A model including additive genetic and specific

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Parmadi, Mokhamad, Sekar Ayu Wigunani, Agus Setia Budi, Wisnu Murtiansyah, and Ari Susanto. "Correlation between Limb Muscle Exploitative Strength to Futsal Shooting Ability." JUMORA: Jurnal Moderasi Olahraga 2, no. 2 (2022): 148–60. http://dx.doi.org/10.53863/mor.v2i2.533.

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This study aims to determine the relationship between the explosive power of leg muscles and the ability to shoot futsal. This research is a quantitative study with a correlational type. The sample in this study was 30 members of the Ababil futsal club. The instrument used in this study is a test of limb muscle exploitative strength and futsal shooting ability. The analysis techniques used are quantified statistics accompanied by hypothesis testing. Conclusions from the research findings are that there is a very meaningful relationship between the explosive power of the limb muscles and the sh

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KUZ'MIN, E. V., M. P. KOROLEV, V. I. LYSAK, et al. "INVESTIGATION OF THE EFFECT OF ULTRASOUND ON THE FORMATION OF THE STRUCTURE AND PROPERTIES OF ALUMINUM-STEEL JOINTS DURING EXPLOSION WELDING IN FORCED COLLISION MODES." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 11 (282) (November 2023): 32–41. http://dx.doi.org/10.35211/1990-5297-2023-11-282-32-41.

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The work is devoted to the study of the effect of the introduction of ultrasonic vibrations during explosion welding of a pair of aluminum-steel compounds. A comparative study of the effect of the explosive loading scheme of joints obtained by the conventional method of explosion welding and explosion welding with the influence of ultrasonic vibrations in forced welding modes was carried out. It has been experimentally established that the introduction of additional ultrasound energy in the process of explosive loading of an aluminum-steel compound contributes to a significant reduction in the

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Kilincarslan, Gökmen, Ismail Ilbak, Kenan Balyamez, and Bedrettin Dolanbay. "Acute Effects of Postactivation Potantiation on Explosive Strength Performance in Fitness Athletes." Pakistan Journal of Medical and Health Sciences 16, no. 2 (2022): 470–73. http://dx.doi.org/10.53350/pjmhs22162470.

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Aim: The aim of this research is to examine the effects of postactivation potantiation (PAP) on explosive strength performance in terms of the rest period and also to determine the optimal resting time for generating explosive strength after the PAP protocol. Methods: Ten fitness athletes were recruited for this study. The mean age of the participants group of the research was 26.60±1.07, their height was 178.50±3.02, their weight was 80.00±4.49, their maximal squat repetition performance (1-RM) was 130±7.45, their vertical jump performance was 53.80±1.98 and their explosive strength performan

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Corigliano, Pasqualino. "Non-linear finite element analysis of a Ti6Al4V/Inconel 625 joint obtained by explosion welding for sub-sea applications." Underwater Technology 38, no. 1 (2021): 13–16. http://dx.doi.org/10.3723/ut.38.013.

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Industries have shown interest in the use of dissimilar metals to make corrosion-resistant materials combined with good mechanical properties in marine environments. Explosive welding can be considered a good method for joining dissimilar materials to prevent galvanic corrosion. The aim of the present study was to simulate the non-linear behaviour of a Ti6Al4V/Inconel 625 welded joint obtained by explosion welding from the values of the tensile ultimate strength and yielding strength of the parent materials. The present study compared the stress-strain curve from tensile loading obtained by th

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Stoycheva, Nadezhda, and Petar Shishkov. "NON-DETONATING CHARGES IN POLYMER HOUSINGS FOR SMOOTH SPLITTING OF ROCK BLOCKS DURING PRIMARY EXTRACTION AND SECONDARY CUTTING." SUSTAINABLE EXTRACTION AND PROCESSING OF RAW MATERIALS JOURNAL 1, no. 1 (2020): 85–89. http://dx.doi.org/10.58903/a14161835.

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In some cases, during the extraction of certain mineral resources, industrial explosives are not sufficiently safe for the environment in terms of generated shock waves, toxic gases, seismic waves, scattering and vibrations. The main reasons for these harmful effects of the explosion are the speed and the mechanism of the chemical reaction of explosive decomposition. The authors have focused their research on a variety of fast-combusting high-energetic compositions, that can fully replace the widely used detonating explosives in the extraction and secondary processing (cutting) of large stone

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Nadezhda, Stoycheva, and Shishkov Petar. "NON-DETONATING CHARGES IN POLYMER HOUSINGS FOR SMOOTH SPLITTING OF ROCK BLOCKS DURING PRIMARY EXTRACTION AND SECONDARY CUTTING." SUSTAINABLE EXTRACTION AND PROCESSING OF RAW MATERIALS JOURNAL 1/2020, no. 1/2020 (2020): 93. https://doi.org/10.5281/zenodo.4270146.

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In some cases, during the extraction of certain mineral resources, industrial explosives are not sufficiently safe for the environment in terms of generated shock waves, toxic gases, seismic waves, scattering and vibrations. The main reasons for these harmful effects of the explosion are the speed and the mechanism of the chemical reaction of explosive decomposition. The authors have focused their research on a variety of fast-combusting high-energetic compositions, that can fully replace the widely used detonating explosives in the extraction and secondary processing (cutting) of large stone

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Ojeda-Aravena, Alex Patricio, Jairo Azócar-Gallardo, Claudio Hérnandez-Mosqueira, and Tomás Herrera-Valenzuela. "Relación entre la prueba de agilidad específica en taekwondo (tsat), la fuerza explosiva y la velocidad líneal en 5-m atletas de taekwondo de ambos sexos (Relationship between the specific agility test in taekwondo (tsat), explosive strength and 5-m linea." Retos, no. 39 (May 20, 2020): 84–89. http://dx.doi.org/10.47197/retos.v0i39.78395.

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El taekwondo (TKD) es caracterizado como un deporte intermitente y de alta-intensidad donde predominan la ejecución de movimientos rápidos y explosivos, con desplazamientos continuos y cambios de dirección (COD). Objetivo. El propósito de este estudio fue examinar la asociación entre la prueba TSAT y la fuerza explosiva y la velocidad lineal en 5-M en competidores de TKD de nivel nacional de ambos sexos. Material y métodos. A través de un diseño correlacional 14 competidores de ambos sexos que compiten habitualmente en torneos de nivel regional y nacional, (edad 19 ± 3 años; talla 164 ± 10 cm;

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Beattie, Kris, Brian P. Carson, Mark Lyons, and Ian C. Kenny. "The Effect of Maximal- and Explosive-Strength Training on Performance Indicators in Cyclists." International Journal of Sports Physiology and Performance 12, no. 4 (2017): 470–80. http://dx.doi.org/10.1123/ijspp.2016-0015.

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Cycling economy (CE), power output at maximal oxygen uptake (WV̇O2max), and anaerobic function (ie, sprinting ability) are considered the best physiological performance indicators in elite road cyclists. In addition to cardiovascular function, these physiological indicators are partly dictated by neuromuscular factors. One technique to improve neuromuscular function in athletes is through strength training. The aim of this study was to investigate the effect of a 20-wk maximal- and explosive-strength-training intervention on strength (maximal strength, explosive strength, and bike-specific exp

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Chen, Siyuan. "Model Test Study on the Transmission Law of Explosion Stress Wave in Rock Mass with Filling Joints." Frontiers in Science and Engineering 3, no. 2 (2023): 11–20. http://dx.doi.org/10.54691/fse.v3i2.3662.

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In order to study the propagation and attenuation law of explosive stress wave in rock mass with filling joints, and consider the influence of different crustal stress conditions, different strength mortar is used to simulate rock mass and joints, and the multi-functional simulation test device of geotechnical engineering is used to carry out explosive model test research, the influence characteristics of different in-situ stress conditions on the attenuation of explosive stress wave in rock mass with different thickness filling joints are analyzed, and obtain the transmission law of stress wa

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