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Artykuły w czasopismach na temat „Hammer Assembly”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

MARIAN, Ovidiu, Ioan DROCAȘ, Ionel BUDÄ‚CAN, Dumitru POP, and Mircea MUNTEAN. "Influence of Sieve Openings Size for Hammer Mills on the Degree of Shredding and Grinding Energy Consumption for Wheat." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture 70, no. 2 (2013): 471–72. http://dx.doi.org/10.15835/buasvmcn-agr:9825.

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Hammer mills are machines used in agriculture to obtain concentrated fodder mix. The hammer mills grinding materials is produced upon impact of the hammer material and crushing plate located inside the grinding chamber. Depending on the hammers rotor assembly mode, the following types of mills can be used: hammer mills articulated and fixed hammer mills. The finesse of the flour obtained is directly influenced by the type of hammer and sieve used.

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Muntean, Mircea Valentin. "The Influence of Hammer Type Used in Grinding Mills on Grist Fineness." Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Food Science and Technology 70, no. 1 (2013): 53. http://dx.doi.org/10.15835/buasvmcn-fst:9355.

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Hammer mills are machines used in agriculture graded to obtain concentrated fodder mix and food industry for grinding vegetable raw materials necessary for obtaining various types of flours. The hammer mills grinding materials is produced upon impact of the hammer material and crushing plate located inside the grinding chamber. Depending on the hammers rotor assembly mode, the following types of mills can be used: - Hammer mills articulated; - Fixed Hammer mills. The objective of this paper is to study the influence of moisture during the operation of grinding wheat on hammer mills using the s

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Adejugbe, I. T., J. A. Olowonubi, I. T. Olorunsola, et al. "Development of a Low-Cost Hammer Mill Machine for Food Processing." Physical Science International Journal 27, no. 3 (2023): 16–26. http://dx.doi.org/10.9734/psij/2023/v27i3792.

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This hammer mill was fabricated from locally sourced and available materials for grinding of large sized grain particles such as SORGHUM, maize, millet, guinea, etc. into small sizes enough to pass through the holes of the cylindrical sieve positioned beneath the hammer assembly. Hammer mills have enjoyed major use in the pulverization and/or grinding of granular objects or similar solid materials into smaller sizes or particles. Major parts of the Conventional hammer mills are shaft, free swinging hammers, sieve, hopper, electric motor, and discharge chute amongst other component parts. Funct

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4

Fang, Shuai, Zhenghao Cai, Yongkui Wang, et al. "Growth and characterization of diamond single crystals grown in the Fe–S–C system by the temperature gradient method." CrystEngComm 23, no. 10 (2021): 2063–70. http://dx.doi.org/10.1039/d0ce01548b.

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I. Suleimanov, R., M. S. Gabdrakhimov, M. Ya. Khabibullin, L. M. Zaripova, and E. R. Vasilyeva. "The study of hydraulic hammer device in drilling tool assembly in hydraulical rotary drilling." International Journal of Engineering & Technology 7, no. 2.23 (2018): 28. http://dx.doi.org/10.14419/ijet.v7i2.23.11877.

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The article presents the study of a hydraulic hammer device for rotary well drilling. The mathematical model of the hydraulic hammer device has been described and studied, the relation of the dynamic load changes on the rock-destruction tool from the principal parameters of the hydraulic hammer device have been obtained. The trial rotary boring with the use of a hydraulic hammer device in drill tool assembly has been carried out, an increase in the drilling penetration rate has been achieved by 47%.

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6

Zhang, Yin Juan. "Study on Dynamic Simulation of Hydraulic Die Forging Hammer Based on VPT." Advanced Materials Research 605-607 (December 2012): 1194–97. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1194.

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The method to precise control the motion of basic virtual prototyping technology (VPT) is put forward in this paper. The hydraulic die forging hammer structure, work principle, and the VPT design idea are introduced. The parametric solid parts model and entire assembly model are all designed based on solidworks software. The dynamic state simulation process of hammer is carried on. The result indicated that the dynamic process parameter of hammer was gained. The dynamic state working process of hydraulic die forging hammer is precisely controlled, which provides the foundation to further reali

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7

Akash Santosh Pawar. "Design and Analysis of Rotor Assembly of Hammer Mill Machine`." International Journal of Engineering and Management Research 11, no. 2 (2021): 28–37. http://dx.doi.org/10.31033/ijemr.11.2.4.

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The project deals with the Manufacturing with Design and Analysis of Hammer Mill Machine and Rotor Assembly of Machine of Capacity of 200 Kg/hr. Which is due to providing the transmission power of 5 HP to the machine. In this project, the Hammer mill machine body structure, Angle Frame and foundation frame for machine is designed using Catia. Also each and every part or component is required for machine is designed. In the present work by using standard design procedures, Diameter of the rotor of shaft of machine has been designed. Theoretical calculations done by using PTC Mathcad softw

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8

Liu, Hong Jun, and Shu Ya Zhi. "The Application Research of the Hydraulic Breaking Hammer." Advanced Materials Research 712-715 (June 2013): 1444–47. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.1444.

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To research fluid pressure mixed cylinder design, fluid pressure control system. Discuss cylinder and piston manufacturing technology, leakage and pressure loss, affect the product's work efficiency and service life problems through the analysis of material mechanical properties and parts processing and assembly accuracy. To fight the different material and different work environment, can transform the corresponding attack frequency and amplitude. Through the dynamic analysis and calculation of mechanical system optimization design lays the foundation for intelligent broken hammer.

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9

Hong, Sokgun, Un Chol Han, Gum Chol Kim, Kwang Myong Ri, and Song Ri. "Numerical Simulation of the Collision Breakage Process between the Agglomerate and Hammer in a Hammer Crusher Using DEM." Shock and Vibration 2023 (July 25, 2023): 1–14. http://dx.doi.org/10.1155/2023/2838179.

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This paper focuses on simulating the collision breakage process between the agglomerate and hammer in a hammer crusher by the discrete element method (DEM) as the interaction between particles. This enables us to consider the energy change in the collision breakage process of the hammer. The agglomerate model is built by using the EDEM 2.7 software according to the principle of closest packing in crystallography, while the hammer model is modeled into an assembly of different sizes of spherical particles to make the collision breakage process between the agglomerate and hammer as the one of in

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10

Wu, Zi Yue, Shuai Zhang, and Ting Gao. "Design of 3D Modeling for the New Hammer Mill Based on the SolidWorks." Applied Mechanics and Materials 224 (November 2012): 320–24. http://dx.doi.org/10.4028/www.scientific.net/amm.224.320.

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As a source of abundant natural resources, crop straws need to be crushed before utilization. The hammer mill is widely used in the processing areas of the straw and feed. Using SolidWorks software into modeling of the hammer mill is to break the traditional two-dimensional method of design. Thus it clearly reflects the structure of the parts and the movement of the assembly, furthermore greatly improve the design efficiency. The main components of the mill can be simulated and analyzed by the auxiliary functions of SolidWorks. According to the results, we can improve the design of structure b

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11

Azimov, Amirkhon M., and Ivan A. Zhukov. "Increasing energy efficiency of hydraulic hammers used for secondary breaking based on the geometry effect of the impactor parts." Mining Industry Journal (Gornay Promishlennost), no. 3/2025 (July 7, 2025): 71–79. https://doi.org/10.30686/1609-9192-2025-3-71-79.

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This article presents the results of theoretical and experimental studies aimed at the practical implementation of the possibility to account for the effect of the geometry of the impactor assembly when choosing rational design parameters of hydraulic hammers. The research was carried out using a test bench based on the principle of an impact tension machine. The test bench was manufactured at the Department of Mechanical Engineering of the Empress Catherine II Saint Petersburg Mining University. It is shown that the anvil blocks made in the form of revolved solids of an exponential curve, a t

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12

Mulyadi, Cecep Deni. "ANALYSIS OF IMPROVEMENT CAUSING DAMAGE TO CYLINDER LINERS AND PISTON RODS IN VEHICLE MODELS (F65 # -3SZ)." ENSAINS JOURNAL 2, no. 2 (2019): 85. http://dx.doi.org/10.31848/ensains.v2i2.241.

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Abstract: Cases that occur complaining about the engine on the vehicle is abnormal, both in idling and high rpm, when the initial inspection is carried out, there appear to be abnormal symptoms on the vehicle's engine.So it needs repairs to the vehicle where there is a problem in the vehicle, which complains about the abnormal state of the engine both the state of idling or middle and high rpm.After doing repairs, the problems that occur occur. The water hammer is caused by a cowl top seal that has no locking clip and water filter assembly. As a result of the water hammer being produced, there

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13

Lee, J. J., H. Q. Pham, and J. A. Moore. "Structure-Borne Vibration Transmission in a Tire and Wheel Assembly." Tire Science and Technology 26, no. 3 (1998): 173–85. http://dx.doi.org/10.2346/1.2135967.

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Abstract Vibration transmission through tires due to forces generated by the road-tire interaction during rolling over a rough road surface is an important source of noise in the vehicle interior over a wide frequency range. Vibration transmission along the tire tread and across the sidewalls to the rim was measured by striking the tread with an impact hammer in generating transfer functions for comparison with results from an SEA model of the wheel. The effects of tire and rim resonances are noted. Transfer functions to acoustic levels in the tire cavity were also measured.

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14

Manohar, Priya A. "Failure Analysis of a Hammer Drill Shaft under Complex Loading Paths and Severe Environmental Conditions." Materials Science Forum 638-642 (January 2010): 3889–94. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.3889.

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This paper describes the failure investigation of a tubular shaft that is part of a hammer drill assembly. The failure investigation was particularly challenging as the fracture surfaces were completely damaged during and subsequent to the failure process. However, careful examination of the component and its assembly revealed many clues that pointed to the root causes of failure. It was determined that the shaft was subjected to impact, fatigue, bending and torsional loads simultaneously at elevated temperatures. The basic failure mode was identified as a combination of torsional fatigue and

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15

NASSIRI, P., R. GOL-MOHAMMADI, and P. KAMALI. "ASSESSMENT OF IMPACT NOISE AND SEGMENTAL VIBRATION PRODUCED BY PNEUMATIC HAMMER IN AN AUTOMOBILE ASSEMBLY." Le Journal de Physique IV 02, no. C1 (1992): C1–531—C1–534. http://dx.doi.org/10.1051/jp4:19921115.

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16

Tian, Yaling, Ji Li, Junjie Dan, et al. "Extracting Technicians’ Skills for Human–Machine Collaboration in Aircraft Assembly." Biomimetics 8, no. 8 (2023): 604. http://dx.doi.org/10.3390/biomimetics8080604.

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Research on the efficiency and quality issues faced in aircraft assembly was conducted in this article. A new method of human–machine collaborative riveting was proposed, which combined the flexibility of manual collaboration with the precise control of automatic riveting. The research works include: (1) a theoretical model of pneumatic hammer riveting was established to clarify the principle and parameters of riveting process. (2) A smart bucking bar was designed to support the data collection and extraction of manual collaborative riveting process. (3) An automatic riveting experimental plat

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17

Livescu, Silviu, Steven Craig, and Bill Aitken. "Fluid-Hammer Effects on Coiled-Tubing Friction in Extended-Reach Wells." SPE Journal 22, no. 01 (2016): 365–73. http://dx.doi.org/10.2118/179100-pa.

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Summary The lateral reach and residual bottomhole-assembly (BHA) loads in extended-reach wells strongly depend on the coiled-tubing (CT) mechanical friction. Detailed CT-friction modeling becomes crucial in the prejob planning stage to ensure successful job predictability. However, current numerical simulators consider constant coefficients of friction (CoFs) that are determined from similar operations without taking into account the effects of the operational and downhole parameters on the CoF for a specific operation. This study outlines the modeling of CT-friction force, CoF, and axial BHA

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18

Hammer, François, Hector Flores, and Mathieu Puech. "Galaxy Mass Assembly with VLT & HST and lessons for E-ELT/MOSAIC." Proceedings of the International Astronomical Union 10, S309 (2014): 273–80. http://dx.doi.org/10.1017/s1743921314009855.

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AbstractThe fraction of distant disks and mergers is still debated, while 3D-spectroscopy is revolutionizing the field. However its limited spatial resolution imposes a complimentary HST imagery and a robust analysis procedure. When applied to observations of IMAGES galaxies at z = 0.4-0.8, it reveals that half of the spiral progenitors were in a merger phase, 6 billion year ago. The excellent correspondence between methodologically-based classifications of morphologies and kinematics definitively probes a violent origin of disk galaxies as proposed by Hammer et al. (2005). Examination of near

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19

Hunger, Sandra, Christian Rotsch, Florian Günther, Welf-Guntram Drossel, and Christoph-Eckhard Heyde. "Influence of a Modified Procedure of Joining Ceramic Head and Adapter Sleeve on the Stem Taper in Revision: An Experimental Study." Bioengineering 11, no. 2 (2024): 170. http://dx.doi.org/10.3390/bioengineering11020170.

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In revision operations, ceramic heads of modular hip implants can be replaced. As the surface of the stem taper can be damaged, additional adapter sleeves are applied. The components are usually connected manually by the surgeon in a one-step procedure by hammer impacts. In this study, we investigated a two-step joining procedure with reproducible impaction force. First, the adapter sleeve and head were joined quasi-statically with a force of 2 kN using an assembly device. In the second step, these components were applied to the stem taper using a pulse-controlled instrument. For reference, th

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20

Jovanovic, Miomir, Dragica Milenkovic, Goran Petrovic, Predrag Milic, and Sasa Milanovic. "Theoretical and experimental analysis of dynamic processes of pipe branch for supply water to the Pelton turbine." Thermal Science 16, suppl. 2 (2012): 617–29. http://dx.doi.org/10.2298/tsci120505196j.

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The paper presents the results of the analysis of pipe branch A6 to feed the Hydropower Plant ?Perucica? with integrated action Pelton turbines. The analysis was conducted experimentally (tensometric) and numerically. The basis of the experimental research is the numerical finite element analysis of pipe branch A6 in pipeline C3. Pipe branch research was conducted in order to set the experiment and to determine extreme stress states. The analysis was used to perform the determination of the stress state of a geometrically complex assembly. This was done in detail as it had never been done befo

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21

Abbas, Sirojuddin, Ahmad Kholil, and Prima Chandra Utama. "OPTIMASI DESAIN MEKANISME LINKAGE GUIDE VANE UNTUK PENGATURAN ALIRAN MASUK AIR KE SUDU PADA TURBIN BANKI." Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) 9, no. 1 (2020): 38. http://dx.doi.org/10.23960/jtep-l.v9i1.38-47.

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ABSTRAK Salah satu bagian penting dalam turbin banki adalah pengaturan guide vane, karena aliran masuk air ke sudu pada turbin tergantung dari pengaturan guide vane nya, baik pada debit rendah maupun normal. Tujuan riset ini adalah untuk mengoptimasi desain mekanisme linkage guide vane agar diperoleh ukuran dan kekuatan komponen yang optimal. Gambar desain pertama-tama dibuat dalam bentuk 2D menggunakan software CAD (Computer Aided Design) kemudian dibentuk ke 3D menggunakan software Inventor. Beban total aliran pada guide vane diberikan sebesar 200 % meliputi faktor water hammer sebesar 130 %

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22

Shen, Yiping, Xin Luo, Songlai Wang, and Xuejun Li. "Dynamic Analysis of a 5-DOF Flexure-Based Nanopositioning Stage." Mathematical Problems in Engineering 2019 (February 18, 2019): 1–11. http://dx.doi.org/10.1155/2019/8501583.

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A multibody dynamic model is developed for dynamic analysis of a 5-DOF flexure-based nanopositioning stage in the projection optical system of the semiconductor lithography in this paper. The 5-DOF stage is considered as an assembly of rigid bodies interconnected by elastic flexure hinges. Considering the length effects of flexure hinges, multibody dynamic equations are established according to spatial motions of rigid bodies by using Lagrangian method. The shear effects and the torsional compliances of the commonly used circular flexure hinges are considered to enhance the modeling accuracy.

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SKODA, Sabrina, Markus MUELLER-TRAPET, Jeffrey MAHN, and Iara BATISTA DA CUNHA. "Annoyance evaluation of impact sounds on lightweight, concrete and cross-laminated timber floors - A comparative study." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 8 (2024): 3121–24. http://dx.doi.org/10.3397/in_2024_3277.

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For people living in multi-unit residential buildings, neighbor noise and especially impact noise from neighbors, such as dropping objects or footsteps, can affect the quality of living of those who hear the noise. In order to support the inclusion of limits for impact noise in a future edition of the National Building Code of Canada, a project at the National Research Council of Canada has focused on the perceived annoyance from different types of impact sounds for various timber floor-ceiling assemblies. The results from listening experiments showed poor correlation between subjective rating

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24

Padilla, Christopher, Antonio Flores, Ezekiel Granillo, Jonah Madrid, and Abdessattar Abdelkefi. "Effects of Central Cut Width on the Dynamical Characteristics of Box Assembly Structure." Applied Sciences 15, no. 1 (2025): 417. https://doi.org/10.3390/app15010417.

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An investigation into the Box Assembly with Removable Component (BARC) structure is conducted by utilizing computational simulations and experimental structural testing in order to determine the complex dynamical responses instigated by the central cut of the system. Because the dynamics of the BARC system is complex, this study focuses primarily on analyzing the behavior of the box assembly (BA) system. The investigation explores the dynamics of the BA system by varying the central cut widths, ranging from a cut as wide as 0.5” cut to a 0.25” cut system, as well as a 0.1” cut and a system wit

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Song, Tengfei, Huijuan Liu, Binbin Bu, and Zhenyang Zhang. "Rapid Calculation and Optimization of Vibration and Noise of Permanent-Magnet Synchronous Motors for EVs Based on Equivalent Structural Network." Machines 10, no. 4 (2022): 281. http://dx.doi.org/10.3390/machines10040281.

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Optimizing electromagnetic performance and vibration noise performance simultaneously is important when designing the drive motor for electric vehicles (EVs). This has not been fully explored, and there are only a few relevant studies. To achieve simultaneous optimization, this paper proposes an equivalent structural network (ESN) of stator assembly to calculate the modal distribution and harmonic response transfer functions. Based on the ESN model, the motor’s electromagnetic vibration noise harmonic response, such as acceleration and equivalent radiated power level (ERPL), can be quickly cal

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Singh, P., V. Menezes, K. J. Irimpan, and H. Hosseini. "Impulse Force Balance for Ultrashort Duration Hypersonic Test Facilities." Shock and Vibration 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/803253.

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This paper presents the measurement of side force, pitching, and yawing moments on a model, using an accelerometer force balance, in a short duration hypersonic shock tunnel. The test model is a blunt-nosed, flapped delta wing, mounted on a support sting through a force balance. The flexible rubber bushes constituting the balance allow the model to float freely on the sting during the test. The accelerometers were located in the model to record accelerations in the directions of interest. The model was tested in shock tunnel at Mach 8 at different angles of incidence with the freestream. Dynam

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Wu, T. W., and C.-K. Lee. "Micro-impact technique and its applications." Journal of Materials Research 9, no. 3 (1994): 797–804. http://dx.doi.org/10.1557/jmr.1994.0797.

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A micro-impact tester has been designed and built by using a piezoelectric impact hammer as an impactor driver. During the course of an impact process, force interactions between the impactor and target surfaces were monitored continuously by a miniaturized piezoelectric loadcell embedded in the flying head assembly. A 3-sided pyramidal diamond indenter (Berkovich indenter) was used as an impactor. After having fully characterized such an impact system, the trajectory of the impactor can be calculated by using the corresponding prerecorded impact force interaction in a simulation program. The

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Estevez-Urra, Aida, Jordi Llumà, Ramón Jerez-Mesa, and Jose Antonio Travieso-Rodriguez. "Monitoring of Processing Conditions of an Ultrasonic Vibration-Assisted Ball-Burnishing Process." Sensors 20, no. 9 (2020): 2562. http://dx.doi.org/10.3390/s20092562.

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Although numerous references present the beneficial effects on surface integrity of ultrasonic vibration-assisted ball burnishing (UVABB), nothing has been reported about the dynamic behavior of the UVABB tool, workpiece, and machine triad during the process. In this paper, a dynamic monitorization through a set of 5 accelerometers is tested to analyze the interactions between the tool–workpiece–machine mechanical assembly. A UVABB tool attached to a milling machine and equipped with a piezoelectric stack that is able to assist the process with a 40-kHz vibration is tested on a milled C45 stee

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Suponitsky, Victoria, David Plant, Eldad J. Avital, and Ante Munjiza. "Pressure Wave in Liquid Generated by Pneumatic Pistons and Its Interaction with a Free Surface." International Journal of Applied Mechanics 09, no. 03 (2017): 1750037. http://dx.doi.org/10.1142/s1758825117500375.

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Numerical analysis of a pressure wave generated in a liquid [Formula: see text] upon impact of the pneumatic pistons and its interaction with a free surface has been performed for the geometry and parameters of the plasma compression system prototype constructed by General Fusion Inc. Stress wave developing in the hammer–anvil piston assembly is first simulated using high-fidelity structural mechanics research code, then propagated through the liquid [Formula: see text] with several solvers within OpenFOAM[Formula: see text] software and also with nonlinear acoustics in-house code based on the

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Rieker, Claude B., and Peter Wahl. "What the Surgeon Can Do to Reduce the Risk of Trunnionosis in Hip Arthroplasty: Recommendations from the Literature." Materials 13, no. 8 (2020): 1950. http://dx.doi.org/10.3390/ma13081950.

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Trunnionosis, defined as wear and corrosion at the head–neck taper connection, is a cause of failure in hip arthroplasty. Trunnionosis is linked to a synergistic combination of factors related to the prosthesis, the patient, and the surgeon. This review presents analytical models that allow for the quantification of the impact of these factors, with the aim of providing practical recommendations to help surgeons minimize the occurrence of this failure mode. A tighter fit reduces micromotion and, consequently, fretting of the taper connection. The paramount parameters controlling the fixation f

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Shaw, John. "The Dagda, Thor and ATU 1148B." Temenos - Nordic Journal of Comparative Religion 55, no. 1 (2019): 97–120. http://dx.doi.org/10.33356/temenos.83427.

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Since ancient times celestial thunder gods have been a familiar feature in mythologies throughout the Indo-European language area. Their Irish counterpart, the Dagda, is a major personage at the centre of the Mythological Cycle, and his possible connections to the Scandinavian god Thor are examined here. Following a brief section dealing with questions of methodology, points of comparison are addressed which include the two gods’ common primary role as defenders of their realm; their place in the assembly of gods; their principal weapons and implements (iron club/hammer/harp, cauldron); their

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Shinagam, Ramakrishna, Guntaka Ajay, Lokanadham Patta, and Anand Siva Gandam. "Vibration and noise studies on wind turbine generator for reduction of vibrations and noise." World Journal of Engineering 17, no. 1 (2020): 134–43. http://dx.doi.org/10.1108/wje-09-2019-0275.

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Purpose Wind power is the one of best natural resources to meet the demands of electricity in India. In this regard, one of engineering college in Visakhapatnam has procured wind turbine generators of 200 kWp and got these installed on the rooftop of the college buildings for research and power generation. After starting the mills, huge vibrations were experienced by the staff and students in the laboratories and classrooms. So, the purpose of this paper is to carry out vibration and noise studies on wind turbine generator to identify the problem for high vibrations and suggest a novel method

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Krull, A., M. M. Morlock, and N. E. Bishop. "Maximizing the fixation strength of modular components by impaction without tissue damage." Bone & Joint Research 7, no. 2 (2018): 196–204. http://dx.doi.org/10.1302/2046-3758.72.bjr-2017-0078.r2.

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Objectives Taper junctions between modular hip arthroplasty femoral heads and stems fail by wear or corrosion which can be caused by relative motion at their interface. Increasing the assembly force can reduce relative motion and corrosion but may also damage surrounding tissues. The purpose of this study was to determine the effects of increasing the impaction energy and the stiffness of the impactor tool on the stability of the taper junction and on the forces transmitted through the patient’s surrounding tissues. Methods A commercially available impaction tool was modified to assemble compo

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Kleffe, Jürgen, Robert Weißmann, and Florian F. Schmitzberger. "Single Nucleotide Polymorphisms Caused by Assembly Errors." Genomics Insights 3 (January 2010): GEI.S3653. http://dx.doi.org/10.4137/gei.s3653.

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We compare the results of three different assembler programs, Celera, Phrap and Mira2, for the same set of about a hundred thousand Sanger reads derived from an unknown bacterial genome. In difference to previous assembly comparisons we do not focus on speed of computation and numbers of assembled contigs but on how the different sequence assemblies agree by content. Threefold consistently assembled genome regions are identified in order to estimate a lower bound of erroneously identified single nucleotide polymorphisms (SNP) caused by nothing but the process of mathematical sequence assembly.

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Padilla, Christopher, Antonio Flores, Jonah Madrid, Ezekiel Granillo, and Abdessattar Abdelkefi. "Insights on the Influence of the Central-Cut Width of the Box Assembly with Removable Component on Its Dynamical Responses." Applied Sciences 15, no. 3 (2025): 1671. https://doi.org/10.3390/app15031671.

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This investigation focuses on the dynamical effects caused by varying the central-cut width within the Box Assembly with Removable Component (BARC) system. The central-cut widths included in this study are a 0.5″ cut, a 0.25″ cut, a thin 0.1″ cut, and a structure that did not have a cut at all. Finite element analysis was conducted to determine the mode shapes and natural frequencies of each of the BARC structures. Structural dynamics experiments were run to examine the effects of the central-cut width on the dynamical responses and nonlinear characteristics of the BARC system. Free vibration

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Ashwin, Das. "Low Cost Automated Hammering Machine." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (2021): 1514–17. http://dx.doi.org/10.22214/ijraset.2021.34854.

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This Project focus on cad modeling, design, and fabrication of the automatic hammering machine. Our primary goal for this is to design is to eliminate man power and utilize electrical energy for automatic hammering machine. Besides, we tend to obtain the maximum torque by minimizing the r.p.m. of gear which a result it can also control the impact velocity for hammering torque force as per required design of gear and r.p.m., In our project, we are using torque force to perform various manufacturing operations in industries like riveting, upset forging, punching, etc. Also, the time required for

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DOGARU, Marina Gabriela, and Cristian PAVEL. "Some Aspects Regarding the Action of Vibrations on the Human Knee Joint." Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science 48, no. 1 (2025): 5–11. https://doi.org/10.35219/mms.2025.1.01.

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Machines that use vibrations in the work process are found in various activities, on construction sites or within the premises of some constructions. Their operators are affected over time by mechanical oscillations. Entering the body through the hand-arm assembly, through the legs, or while sitting, the vibrations affect the human body, usually in a negative way. The positive effects are currently being studied in order to be able to improve various human joint conditions or to improve physical condition, but exposure must be done in a controlled environment and under well-established conditi

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Zhang, Rui, Liangliang Zhao, Qingrui Kong, et al. "The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot." Bioengineering 10, no. 1 (2022): 1. http://dx.doi.org/10.3390/bioengineering10010001.

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The sole is a key component of the interaction between foot and ground in daily activities, and its cushioning performance plays a crucial role in protecting the joints of lower limbs from impact injuries. Based on the excellent cushioning performance of the ostrich foot and inspired by the structure and material assembly features of the ostrich foot’s metatarsophalangeal skeletal–tendon and the ostrich toe pad–fascia, a functional bionic cushioning unit for the midsole (including the forefoot and heel) area of athletic shoes was designed using engineering bionic technology. The bionic cushion

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Sawczuk, Aleksandra, and Bartlomiej Chojnacki. "Mitigation of Structural Vibrations in Sensitive Audio Devices: A Study on Isolation Materials for Lightweight Turntables." Materials 18, no. 11 (2025): 2617. https://doi.org/10.3390/ma18112617.

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Effective vibration isolation is critical for minimizing the transmission of unwanted mechanical energy from a source to its surrounding environment, especially in precision systems, where even minor disturbances can degrade performance. This study addresses the challenge of low-frequency vibration transmission in lightweight, high-sensitivity audio devices such as turntables with masses below 10 kg. Traditional vibration mitigation strategies—primarily based on increasing system mass to raise the resonant frequency—are unsuitable for such systems due to weight constraints and potential impact

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Jerome, Trevor. "Variability in measured resonance frequencies and loss factors of a bolted panel structure." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 267, no. 1 (2023): 1–14. http://dx.doi.org/10.3397/no_2023_0006.

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Structural bolted joints are not perfectly contiguous or rigid. Instead, the joint stiffness, mass, and damping depend on many parameters including the joint thickness, number and size of bolts, the bolt preload, and the motion of the jointed region. Also, damping can vary with motion type (stick-slip for friction and impact for joint opening and closing) and amplitude. Finally, all joint dynamic parameters vary from installation to installation. We measured the variability of bolted joint stiffness and damping for four low-order modes of a bolted Aluminum panel structure - two flexural modes

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Binchiciu, Emilia Florina, Traian Fleșer, Ionelia Voiculescu, and Victor Geanta. "Composite Deposits Developed by Welding on Horizontal Mill Hammers." Advanced Materials Research 1146 (April 2018): 27–31. http://dx.doi.org/10.4028/www.scientific.net/amr.1146.27.

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The paper presents the concept of designing active hammer edges of horizontal mills for grinding tungsten carbide waste by making composite layers deposited by welding. The new generation of hammers is carried out on the principles of preventive and repetitive maintenance, by endowment with wear addition, predetermined as volume and geometric configuration, depending on the specific conditions of uninterrupted use for a period of time established for economic reasons. The main demands that affect the integrity of the active areas of grinding mills (high pressure abrasion wear, thermo-mechanica

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Esquivel-Sirvent, Raul. "Finite-Size Effects of Casimir–van der Waals Forces in the Self-Assembly of Nanoparticles." Physics 5, no. 1 (2023): 322–30. http://dx.doi.org/10.3390/physics5010024.

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Casimir–van der Waals forces are important in the self-assembly processes of nanoparticles. In this paper, using a hybrid approach based on Lifshitz theory of Casimir–van der Waals interactions and corrections due to the shape of the nanoparticles, it is shown that for non-spherical nanoparticles, the usual Hamaker approach overestimates the magnitude of the interaction. In particular, the study considers nanoplates of different thicknesses, nanocubes assembled with their faces parallel to each other, and tilted nanocubes, where the main interaction is between edges.

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Baptista, Rodrigo P., Yiran Li, Adam Sateriale, et al. "Long-read assembly and comparative evidence-based reanalysis of Cryptosporidium genome sequences reveal expanded transporter repertoire and duplication of entire chromosome ends including subtelomeric regions." Genome Research 32, no. 1 (2021): 203–13. http://dx.doi.org/10.1101/gr.275325.121.

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Cryptosporidiosis is a leading cause of waterborne diarrheal disease globally and an important contributor to mortality in infants and the immunosuppressed. Despite its importance, the Cryptosporidium community has only had access to a good, but incomplete, Cryptosporidium parvum IOWA reference genome sequence. Incomplete reference sequences hamper annotation, experimental design, and interpretation. We have generated a new C. parvum IOWA genome assembly supported by Pacific Biosciences (PacBio) and Oxford Nanopore long-read technologies and a new comparative and consistent genome annotation f

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Liu, Mei Ying, Rui Yang, and Xiu Wen Chu. "The Optimal Design of Vertical Hammer Mill Based on Pro/E." Advanced Materials Research 502 (April 2012): 407–11. http://dx.doi.org/10.4028/www.scientific.net/amr.502.407.

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Vertical hammer mill is widely used in food and feed processing factory. It contains the rotor, sieve plate, machine body, feeding device, discharge device, diver device and etc. Traditional design method used two-dimensional drawings to express three-dimensional information of parts, which was abstract and difficult to be modified. This research utilized 3D software Pro/E to carry out three-dimensional designing, modeling, virtual assemble and motion simulation, and used structural mechanics analysis module Pro/Mechanical to carry out finite element analysis of key parts to optimize design of

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Rusmilyansari, Rusmilyansari, Iriansyah Iriansyah, and Siti Aminah. "PEMBANGUNAN KAPAL PERIKANAN DI GALANGAN KAPAL TRADISIONAL KALIMANTAN SELATAN." Fish Scientiae 4, no. 8 (2016): 95. http://dx.doi.org/10.20527/fs.v4i8.1122.

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Kapal perikanan merupakan salah satu unsur dalam menentukan keberhasilan operasi penangkapan ikan. Penelitian ini bertujuan untuk mengetahui ; (1) tingkat teknologi; (2) jenis kayu yang digunakan dan (3) tahapan pembangunan kapal kayu di galangan kapal tradisional. Penelitian dilakukan dengan metode Survey. Penelitian dilakukan galangan kapal rakyat Sewangi Kabupaten Barito Kuala dan desa Pagaruyung Kabupaten Tanah Bumbu Kalimantan Selatan. Penelitian dilakukan pada bulan Agustus sampai dengan Oktober 2013. Hasil Penelitian menunjukan bahwa: (1) Tingkat teknologi yang digunakan pada pembanguna

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Geng, Rui, Juanjuan Yin, Jingxin Zhou, et al. "In Situ Construction of Ag/TiO2/g-C3N4 Heterojunction Nanocomposite Based on Hierarchical Co-Assembly with Sustainable Hydrogen Evolution." Nanomaterials 10, no. 1 (2019): 1. http://dx.doi.org/10.3390/nano10010001.

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The construction of heterojunctions provides a promising strategy to improve photocatalytic hydrogen evolution. However, how to fabricate a nanoscale TiO2/g-C3N4 heterostructure and hinder the aggregation of bulk g-C3N4 using simple methods remains a challenge. In this work, we use a simple in situ construction method to design a heterojunction model based on molecular self-assembly, which uses a small molecule matrix for self-integration, including coordination donors (AgNO3), inorganic titanium source (Ti(SO4)2) and g-C3N4 precursor (melamine). The self-assembled porous g-C3N4 nanotube can h

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Abdul Rani, M. N., D. Stancioiu, M. A. Yunus, Hua Jiang Ouyang, H. Deng, and S. James. "Model Updating for a Welded Structure Made from Thin Steel Sheets." Applied Mechanics and Materials 70 (August 2011): 117–22. http://dx.doi.org/10.4028/www.scientific.net/amm.70.117.

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Dynamic behaviour of a welded structure made from thin metal sheets which has a large flat surface and has been assembled together by a number of scattered spot welds is investigated. An impact hammer and roving accelerometers are used in the modal tests to provide data to update the FE model. NASTRAN Solution 103 is used to compute natural frequencies and modes of interest. The large error of the initial FE model is largely reduced mainly by adjusting a crucial parameter of the bending moment of inertia ratio, 12I/T**3.

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Wiese, K., and Y. Ebina. "The Propulsion Jet of Euphausia Superba (Antarctic Krill) as a Potential Communication Signal among Conspecifics." Journal of the Marine Biological Association of the United Kingdom 75, no. 1 (1995): 43–54. http://dx.doi.org/10.1017/s0025315400015186.

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INTRODUCTIONIndividuals of the Antarctic krill Euphausia superba Dana assemble in spring into dense formations (estimated 20,000 m3) which swim for long distances and at considerable speed (estimated 20 cm s−1) to search for patches of phytoplankton (Hamner, 1984). Recruitment to schools and maintenance of a defined position in a travelling formation, a remarkable social behaviour, requires some kind of communication system between individuals.Vision, as a sophisticated image-processing system, habituating strongly with time, appears inappropriate for the task of continuously monitoring positi

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Дородов, П. В., В. А. Петров, and Л. А. Торопов. "REGRESSION MODEL OF WEAR OF THE WORKING SURFACE OF BLADES OF THE DKR SERIES GRAIN CRUSHER DRUM." Bulletin of Izhevsk State Agricultural Academy, no. 3(79) (September 27, 2024): 106–13. http://dx.doi.org/10.48012/1817-5457_2024_3_106-113.

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Развитие сельскохозяйственного производства в России связано с отраслью животноводства как молочного направления, так и мясного. Сегодня в России все большую долю рынка занимают хозяйства и крупные предприятия АПК, заинтересованные в новых технологиях, эффективных технических средствах, способных повысить рентабельность производства сельскохозяйственной продукции. Одно из перспективных направлений – это снижение издержек при производстве кормов, так как они в структуре себестоимости производства мяса, молока и других продуктов животноводства составляют более 60 %. Большая доля продуктивности к

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Takagi, Jun, and Yuta Shimamoto. "High-quality frozen extracts of Xenopus laevis eggs reveal size-dependent control of metaphase spindle micromechanics." Molecular Biology of the Cell 28, no. 16 (2017): 2170–77. http://dx.doi.org/10.1091/mbc.e17-03-0174.

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Cell-free extracts from unfertilized Xenopus laevis eggs offer the opportunity for a variety of biochemical and biophysical assays for analyzing essential cell cycle events such as metaphase spindle assembly. However, the extracts often exhibit substantial variation in quality and have low storage stability, factors that hamper their experimental utility. Here we report a simple two-step method for preparing frozen egg extracts that retain spindle assembly activity levels similar to those of freshly prepared extracts. Extract degradation associated with the freeze–thaw process can be substanti

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