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Journal articles on the topic 'Threaded holes'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Machmud, Edy, Moh Dharmautama, and Herawati Herawati. "Desain pin hole mempengaruhi kuat rekat geser gigitiruan jembatan adesif Pin hole design affect shear bond strength of adhesive bridge." Journal of Dentomaxillofacial Science 12, no. 2 (2013): 104. http://dx.doi.org/10.15562/jdmfs.v12i2.360.

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To overcome the failure of adhesive bridge due to release of the adhesive bond cement between teeth and metal,preparation modification was performed with a pin hole in the teeth cingulum. This study aimed to determine the effectof thread on a pin hole to shear strength adhesion of adhesive bridge. Forty maxillary incisors were prepared at theirpalatinal surfaces 0.3 mm thick, and were divided into four treatments (threaded hole+threaded pin, threaded holes+non-threaded pin, non-threaded holes+threaded pin, non-threaded holes+non-threaded pin). Casted-plates made fromnickel chromium alloy were

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2

Wu, Hao, Mark Porter, Richard Ward, Justin Quinn, Cormac McGarrigle, and Shaun McFadden. "Investigation of the Mechanical Properties of Friction Drilling with 6082-T6 Aluminium Alloy." Materials 15, no. 7 (2022): 2469. http://dx.doi.org/10.3390/ma15072469.

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Friction drilling is a non-conventional hole-making process suitable for thin-section, ductile metals. During friction drilling, heat is generated due to tool rotation and the resulting flow of metal creates a bushing on the exit side of the hole. The bushing offers a longer engagement length for any subsequent thread making process. The threaded holes in this study were created by friction drilling and thread forming in 6082-T6 aluminium alloy. Four scenarios of the threaded holes were created with four levels of rotation rates of friction drilling processes (2000 rpm to 4000 rpm) and the mec

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3

Wang Hailiang, 王海亮, та 叶南 Ye Nan. "螺纹孔视觉定位及多孔对准技术". Laser & Optoelectronics Progress 62, № 14 (2025): 1415009. https://doi.org/10.3788/lop250619.

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4

Khotina, G. K., V. A. Shabunina, and N. A. Polunin. "MODELING OF THREADED CONNECTION IN THE SOLIDWORKS SYSTEM." Spravochnik. Inzhenernyi zhurnal, no. 335 (February 2025): 56–63. https://doi.org/10.14489/hb.2025.02.pp.056-063.

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The article describes the methodology for developing models of connections with standard threaded parts in the geometric modeling environment (SGM) SolidWorks. The proposed methodology considers the modeling of threads, simple and threaded holes for various types of product components. Sets of studs, screws and bolts are modeled on the proposed model for connecting the housing and lid. Special attention is paid to the arrangement of linear and circular arrays of the considered sets, which describe in more detail the models of threaded connections. The article presents a technique for modeling

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5

Shalamov, P. V., I. D. Cherepkov, and V. L. Kulygin. "Strength of a Threaded Joint on Cut in Holes with Flanges Formed by a Rotating Punch in Thin-Sheet Work-Pieces." Solid State Phenomena 284 (October 2018): 441–46. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.441.

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The main problem of shaping threaded holes in sheet blanks with a thickness of less than two millimeters is to obtain a threaded surface that provides the necessary strength of the threaded connection. The method of forming holes with flanges in sheet blanks by rotating punch (thermal drilling) has wide technological capabilities. The rotational speed of the punch, as well as its axial feed, affect the shape, size and properties of the material of the resulting hole, which in its turn affects the length of the screwing and the strength of the threaded joint.

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Prokofiev, Alexander, and Aleksandr Steshkov. "ADVANCED METHODS OF MACHINING INTERNAL THREADS." Transport engineering 2022, no. 6 (2022): 4–10. http://dx.doi.org/10.30987/2782-5957-2022-6-4-10.

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The paper deals with the problems of machining internal threads by deformation with the use of burnishers and combined taps. Internal threads were cut with taps until recently, which is accompanied by a number of significant drawbacks, and they are most evident when obtaining threaded holes in highly plastic materials. In these cases, it is advisable to machine threads by plastic deformation with forming taps. Some variants of tool structures for improving the quality of the internal thread by deformation and combined machining are considered, and even dependencies for defining the parameters

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Drbul, Mário, Pavol Martikan, Michal Sajgalik, Andrej Czan, Jozef Broncek, and Ondrej Babik. "Study of Measurement Strategies of Geometric Deviation of the Position of the Threaded Holes." Technological Engineering 14, no. 2 (2017): 9–11. http://dx.doi.org/10.1515/teen-2017-0012.

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Abstract Verification of product and quality control is an integral part of current production process. In terms of functional requirements and product interoperability, it is necessary to analyze their dimensional and also geometric specifications. Threaded holes are verified elements too, which are a substantial part of detachable screw connections and have a broad presence in engineering products. This paper deals with on the analysing of measurement strategies of verification geometric deviation of the position of the threaded holes, which are the indirect method of measuring threaded pins

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8

Lyubіn, Mykola, and Oleksіі Tokarchuk. "INFLUENCE OF THE METHOD OF FASTENING OF THE STRESSLESS TAGS TO THE THRESHOLD PROCESS." Vibrations in engineering and technology, no. 2(93) (May 31, 2019): 56–61. http://dx.doi.org/10.37128/2306-8744-2019-2-9.

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Introducing chipless taps into production it is necessary to take into account factors arising from the specifics of the method and factors affecting economic efficiency. Significant effect from the introduction of the machine method of manufacturing threaded holes in stainless steels with brushless taps can be obtained only if the complex of measures is observed, related to the choice of the optimum hole diameter and the quality of preparation of the hole for the thread, the choice of mounting the tap on the machine, the speed of thread extrusion, coolant equipment and others. A new contour d

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9

Anatoliy Ostrovsky, Anatoliy Ostrovsky. "INNOVATIVE THREAD METHOD THROUGH CYLINDRICAL HOLES." ENGINEERING, ENERGY, TRANSPORT AIC, no. 4(115) (December 24, 2021): 90–96. http://dx.doi.org/10.37128/2520-6168-2021-4-10.

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Innovative activity in the field of engineering and technology, based on the use of best practices, contributes to scientific and technological progress in production. The latest projects in the field of technology significantly increase the technical and economic performance of enterprises. Innovative technical solutions of production nature significantly improve the structure and quality of production. Given the level of the proposed technological changes in the manufacture of threads in through holes, these innovations cover the field of combinatorial and partial. Today mechanical engineeri

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10

Ke, Mei Yuan, and Zhi Yu Xiao. "Warm Flow Compaction to Form Cross-Shaped Parts with Threaded Holes." Advanced Materials Research 239-242 (May 2011): 3100–3104. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.3100.

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The flowability of W-Ni-Fe powders was evaluated through measuring the lateral pressures at different lateral distances in warm flow compacting. Green densities at different lateral distances were also tested. In addition, cross-shaped parts with threaded holes were trial produced. The results showed that, at lateral distance of 2 mm, the lateral pressure was 101.9 MPa and the green density was 9.09 g·cm-3when compacted under 600 MPa at 96°C. Warm flow compaction could form cross-shaped parts with lengthwise and lateral threaded holes.

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11

Xu, Liang, Yanh Xiong, Lei Xi, Jianmin Gao, Yunlong Li, and Zhen Zhao. "Numerical Simulation of Swirling Impinging Jet Issuing from a Threaded Hole under Inclined Condition." Entropy 22, no. 1 (2019): 15. http://dx.doi.org/10.3390/e22010015.

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There are some inclined jet holes in the cooling structure of the leading edge region of gas turbine blades. In order to improve the cooling effect of traditional round holes, this paper proposes to replace the round holes with threaded holes, and studies the complex flow and heat transfer performance of the swirling impinging jet (SIJ) issuing from the 45° threaded holes in the inclined condition by numerical simulation. The influencing factors include jet inclination angle α (45°–90°), jet-to-plate distance (H/d = 2, 4, 6), and Reynolds number (6000–24,000). The results show that the inclina

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12

Ягодкин, Максим, and Maksim Yagodkin. "AUTOMATION OF MACHINING OF THREADED HOLES OF ULTRA-SMALL DIAMETERS." Automation and modeling in design and management of 2018, no. 1 (2018): 42–48. http://dx.doi.org/10.30987/article_5bfd98c80e6bd7.41659987.

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We study the process of automating the production process when threading in holes of ultra-small diameters (d ≤ 1,4) in aluminum alloy parts in high-performance machining centers. The proposed schematic diagram of the processing of the threaded hole midget diameter for high-performance machining centers with the use of cutting blade anode-mechanical processing (AMO). Advantages of the offered scheme of processing in comparison with traditional methods that allows drawing a number of conclusions were shown. Application of the proposed scheme of blade anodic-mechanical treatment allows to

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13

Tokarchuk, Oleksіі, and Igor Kupchuk. "RESEARCH ON INFLUENCE OF CONSTRUCTIONS SIZES OF THE INTAKE AND CALIBRATION SURFACE OF CHIPLESS TAPS FOR THE PROCESS OF EXTRACTION OF THREAD." Vibrations in engineering and technology, no. 3(98) (October 30, 2020): 76–84. http://dx.doi.org/10.37128/2306-8744-2020-3-8.

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The analysis of modern existing methods for producing internal thread showed that one of the most promising methods, with significant technological capabilities and high productivity, is the method of plastic shaping (extrusion) of the thread with chipless taps. The complex of known measures aimed at increasing the stability of taps and their reliability, consisting in the creation of new tool materials, improvement of the design and optimization of the geometry of the cutting part of the taps, improvement of the quality of working surfaces, the use of new types of cooling and optimal settings

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14

Pikalov, Iakov, Maksim Brungardt, Mikhail Saramud, and Stepan Tkachev. "Integrating electronic and mechanical components to create an adaptive battery tool." Journal of Physics: Conference Series 2697, no. 1 (2024): 012068. http://dx.doi.org/10.1088/1742-6596/2697/1/012068.

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Abstract The article presents the authors’ approach to the development of a special adaptive tool with an autonomous energy source for tightening screws into threaded holes. The tool allows one to tighten and control threaded connections according to the assembly sequence of the device. A distinctive feature is its independence from the qualifications of the assembler, allowing to reduce the number of defects when assembling products.

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15

Chao, Ching-Kong, You-Lin Chen, and Jinn Lin. "Half-threaded holes markedly increase the fatigue life of locking plates without compromising screw stability." Bone & Joint Research 9, no. 10 (2020): 645–52. http://dx.doi.org/10.1302/2046-3758.910.bjr-2019-0237.r2.

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Aims To determine whether half-threaded screw holes in a new titanium locking plate design can substantially decrease the notch effects of the threads and increase the plate fatigue life. Methods Three types (I to III) of titanium locking plates were fabricated to simulate plates used in the femur, tibia, and forearm. Two copies of each were fabricated using full- and half-threaded screw holes (called A and B, respectively). The mechanical strengths of the plates were evaluated according to the American Society for Testing and Materials (ASTM) F382-14, and the screw stability was assessed by m

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16

Wang, Rui, Xiangyu Guo, and Songmo Li. "Automatic Assembly Technology of Dense Small Screws for Flat Panel Parts." Applied Sciences 13, no. 14 (2023): 8309. http://dx.doi.org/10.3390/app13148309.

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Screw assemblies of radar are characterized by numerous densely distributed small screws of various types, rendering their manual assembly difficult and inefficient. To improve the assembly quality and efficiency, an automatic assembly system was developed. First, the position and attitude relationships among the workpiece, camera, and base coordinate systems of the manipulator were obtained using three-point location and nine-point calibration methods. Second, a visual servoing strategy is designed for guiding the manipulator such that its position can be adjusted adaptively to achieve the hi

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17

Balasubramanian, M., and S. Madhu. "Evaluation of delamination damage in carbon epoxy composites under swirling abrasives made by modified internal threaded nozzle." Journal of Composite Materials 53, no. 6 (2018): 819–33. http://dx.doi.org/10.1177/0021998318791340.

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Carbon fibre-reinforced polymer composites are finding increased applications in the field of automotive manufacture and aircraft industries due to their appreciative combination of high strength and low weight. The machining of these composites with economically viable and high part qualities requires enhancement in machining strategies. Delamination and surface roughness are the undesirable geometrical defects inherent in abrasive jet machining of layered polymer composites. This investigation focuses on the mechanism of delamination and surface roughness in abrasive jet machining of carbon

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18

Otero Vich, José M. "Update on the Cloward procedure: new instruments." Journal of Neurosurgery 81, no. 5 (1994): 716–20. http://dx.doi.org/10.3171/jns.1994.81.5.0716.

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✓ A series of 283 patients who suffered from cervical spondylosis, herniated disc, or traumatic pathology of the cervical spine were operated on using an anterior approach. Intersomatic arthrodesis was performed in 350 cases; in every case, a threaded bone graft was screwed into the intervertebral orifice using the technique described by the author. Fusion was achieved within 6 months in 93% of cases with 92 autologous grafts and in 81% of cases with 258 heterologous grafts. In addition to the use of threaded intervertebral holes and threaded bone grafts, the Cloward technique was modified by

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19

Kresiariati, Novera, and Henry Apriyatno. "EKSPERIMEN KEGAGALAN BREAKOUT CHEMICAL ANCHOR STUD METODE CAST IN PLACE DAN POST INSTALLED DENGAN MODIFIKASI LUBANG DRILL BIT EXTRACTOR." Citizen : Jurnal Ilmiah Multidisiplin Indonesia 2, no. 3 (2022): 403–10. http://dx.doi.org/10.53866/jimi.v2i3.104.

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Anchors are needed to transmit the load to the concrete in strengthening the structure of a building. The anchor is installed in two ways, namely the cast in place method and the post installed method. In the post installed method, given Sika anchorfix-2 adhesive. The study was conducted to determine the type of failure that occurred, the pullout capacity of the anchor implanted on the hef 90 mm, and the average value of the adhesive strength (μ) of the M12 x 160 mm stud anchor on the T beam specimen measuring 390 x 270 x 300 mm as many as three samples. Each method of cast in place, post inst

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20

Yu, Huan. "Analysis and optimization of positioning scheme for machining 2.5mm groove." MATEC Web of Conferences 353 (2021): 01021. http://dx.doi.org/10.1051/matecconf/202135301021.

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The front bracket of a certain type studied in this subject is a part of the braking system and plays an important role in the braking system. The main parts of the front support are grooved surface, 44.3mm cylindrical surface, M16 threaded hole plane, M16 threaded hole and Ф 12 holes and 2.5mm grooves. These parts are matched with the brake plate, so they have high dimensional accuracy and geometric accuracy. The main content of this paper is to optimize the positioning scheme of the front support when the machining height is 2mm groove, and improve the machining accuracy of 2mm groove.

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21

Khani, Salman, Seyedhamidreza Shahabi Haghighi, Mohammad Reza Razfar, and Masoud Farahnakian. "Improvement of thread turning process using micro-hole textured solid-lubricant embedded tools." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 235, no. 11 (2021): 1727–38. http://dx.doi.org/10.1177/09544054211019929.

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In this paper, the thread turning of aluminum 7075-T6 alloy is studied using micro-hole textured solid-lubricant embedded carbide inserts. The primary focus of this work is to enhance the performance of the thread turning process for producing high quality threaded parts. To achieve this, micro-holes were generated by laser micro-machining on the rake face of tools and then, MoS2 and CNT (carbon nanotube) solid-lubricants were embedded into micro-holes. The effects of micro-holes and solid-lubrication on the performance of the thread turning process were examined using traditional tool ( T0),

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22

Hladnik, Jurij, Franc Majdič, Anže Čelik, and Boris Jerman. "Dependence of the Preload on the Tightening Torque for Hydraulic Plugs." Applied Sciences 14, no. 24 (2024): 11920. https://doi.org/10.3390/app142411920.

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In hydraulics, threaded plugs are used to close various manufacturing holes and other fluid channels. They are preloaded to ensure sufficient sealing force. Since the range of recommended thread and underhead friction coefficients for preloaded threaded connections in the literature is very wide, they are not suitable for accurate determination of the preload–torque relationships of plug–valve connections. In the study, two non-standard plugs with metric threads were equipped with strain gauges and repeatedly tightened three times in valve housings under lubricated and unlubricated conditions.

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Păunescu, Tudor, and Rodica Păunescu. "Accuracy analysis of the modular fixturing systems with grid pattern threaded holes." MATEC Web of Conferences 94 (2017): 05007. http://dx.doi.org/10.1051/matecconf/20179405007.

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24

Martikáň, Pavol, Mário Drbúl, Jozef Holubják, Jozef Mrázik, and Richard Joch. "THE ISSUE OF DETERMINING THE GEOMETRIC POSITION DEVIATION OF THE THREADED HOLES." Advances in Science and Technology Research Journal 10, no. 32 (2016): 47–52. http://dx.doi.org/10.12913/22998624/65107.

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25

Schlefman, BS. "Akin osteotomy with horizontal interosseous wire-loop fixation." Journal of the American Podiatric Medical Association 89, no. 4 (1999): 194–98. http://dx.doi.org/10.7547/87507315-89-4-194.

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The author has devised a new type of fixation for the Akin osteotomy. The fixation consists of double-stranded monofilament wire that is threaded through drill holes medially to laterally both proximal and distal to the osteotomy, encompassing four cortices. The fixation is placed prior to the cutting of the osteotomy, resulting in less chance of disruption to the lateral cortical hinge.

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Cai, Min, Le Liu, Shuo Li, et al. "Seismic performance of TFOSBs bolted endplate connection to CFSST with repaired threaded holes." Journal of Constructional Steel Research 201 (February 2023): 107693. http://dx.doi.org/10.1016/j.jcsr.2022.107693.

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27

Zhou, Yibang, Xiaoyong Wang, and Lanzhu Zhang. "Research on Assembly Method of Threaded Fasteners Based on Visual and Force Information." Processes 11, no. 6 (2023): 1770. http://dx.doi.org/10.3390/pr11061770.

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Threaded fastening operations are widely used in assembly and are typically time-consuming and costly. In low-volume, high-value manufacturing, fastening operations are carried out manually by skilled workers. The existing approaches are found to be less flexible and robust for performing assembly in a less structured industrial environment. This paper introduces a novel algorithm for detecting the position and orientation of threaded holes and a new method for tightening bolts. First, the elliptic arc fitting method and the three-point method are used to estimate the initial position and orie

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Zhetessova, Gulnara, Irina Khrustaleva, Viacheslav Shkodyrev, et al. "Model of Optimization of Process Parameters for Machining of Separate Design Elements of the Product." Applied Sciences 15, no. 10 (2025): 5395. https://doi.org/10.3390/app15105395.

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Optimization of process parameters for manufacturing of individual surfaces and the product as a whole is one of the key tasks of technological preparation of production. Processing of individual design elements of the product is a structurally complex process, which is a clear sequence of actions characterized by a set of parameters. The effectiveness of the optimization process directly depends on the level of detail of the process under study and the optimal choice of targets and control parameters. Thus, for a single design element of the product, the control task is reduced to the structu

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Chitta, L. P., Z. Huang, R. D’Amicis, et al. "Coronal hole picoflare jets are progenitors of both fast and Alfvénic slow solar wind." Astronomy & Astrophysics 694 (February 2025): A71. https://doi.org/10.1051/0004-6361/202452737.

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Solar wind, classified by its bulk speed and the Alfvénic nature of its fluctuations, generates the heliosphere. The elusive physical processes responsible for the generation of the different types of this wind are a topic of active debate. Recent observations reveal intermittent jets, with kinetic energy in the picoflare range, emerging from dark areas of a polar coronal hole threaded by open magnetic field lines. These could substantially contribute to solar wind. However, their ubiquity and direct links to solar wind have not been established. Here, we report a unique set of remote-sensing

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Welch, Michael. "A Paradigm for the Analysis of Preloaded Bolted Joints." Strojnícky casopis – Journal of Mechanical Engineering 69, no. 1 (2019): 143–52. http://dx.doi.org/10.2478/scjme-2019-0012.

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AbstractThe purpose of this paper is to present a paradigm, or guide, to the analysis of preloaded bolted joints made using multiple bolts. Classical analysis methods are applied to the interaction of the joint elements subjected to combinations of both in-plane and out-of-plane loads and moments. The distribution of the external loads and moments within the preloaded joint is determined in relationship to individual bolts. An analysis of loads and stresses in individual bolts and dowels along with flange bending and thread shear in tapped or threaded holes is developed. The article brings tog

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31

Kliuchnikov, A. S., and E. N. Lapin. "Redesigning TBM-1.7 Combustion Unit to Expand the Temperature Range." Agricultural Machinery and Technologies 17, no. 2 (2023): 55–60. http://dx.doi.org/10.22314/2073-7599-2023-17-2-55-60.

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It is shown that the transition to a new low-temperature method of convective drying leads to a reduction in grain drying costs.The implementation of this method is confirmed to require expanded temperatures generated by the TBM-1.7 furnace unit that the SZSh-16A shaft dryer is equipped with. It is noted that a plant-manufactured burner nozzle works smoothly only when the fuel consumption is 40-100 kilograms per hour, and the air heating temperatures are 50-130 degrees Celsius. (Research purpose) To determine the jet optimal parameters for smooth operation of the nozzle in the TBM-1.7 combusti

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Sun, Dong, Yu-juan Tang, Jiong Wang, and Xin-jie Wang. "A novel fixable cylindrical ultrasonic motor." Advances in Mechanical Engineering 11, no. 3 (2019): 168781401982998. http://dx.doi.org/10.1177/1687814019829984.

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A novel cylindrical ultrasonic motor easy to be fixed is proposed in this article. There are threaded holes on the bottom of stator used for fixing, distinguishing it from other cylindrical stators. The bottom is machined as a round lug boss. Its radius is smaller than the inner radius of the stator in order not to affect the excitation of vibration mode. The finite element analysis was accomplished to verify the working principle. Based on the analysis, a prototype was fabricated and measured. The mechanical output characteristics were obtained by experiments. The maximal velocity of the prop

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Kelly, K., G. S. Martin, D. J. Burba, S. A. Sedrish, and R. M. Moore. "Pullout Strength of Screws in Foal Third Metacarpal Bone after Overdrilling a 4.5 mm Hole." Veterinary and Comparative Orthopaedics and Traumatology 11, no. 04 (1998): 200–204. http://dx.doi.org/10.1055/s-0038-1632548.

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SummaryThe purpose of the study was to determine and to compare the in vitro pullout strength of 5.5 mm cortical versus 6.5 mm cancellous bone screws inserted in the diaphysis and metaphysis of foal third metacarpal (MCIII) bones in threaded 4.5 mm cortical bone screw insertion holes that were then overdrilled with a 4.5 mm drill bit. This information is relevant to the selection of a replacement screw if a 4.5 mm cortical screw is stripped during orthopaedic surgery. In vitro pullout tests were performed in two independent cadaver studies, each consisting of 12 foal MCIII bones. Two 4.5 mm co

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34

Shuaib, I., and M. Hillery. "Forces Generated in Guide-Wires when Drilling Human Bone." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 209, no. 3 (1995): 157–62. http://dx.doi.org/10.1243/pime_proc_1995_209_338_02.

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In orthopaedic surgery guide-wires are extensively used for the drilling of pilot holes in human bones to allow further drilling, reaming and screw-tapping to take place in the repair and reconstruction of fractures. The guide-wires are generally 1.5 to 2.5 mm in diameter and have a three-faceted point with or without a screw thread. This paper describes drilling tests carried out using both types of guide-wire and these are compared with results obtained from a two-faceted geometry developed during this research. Tests were performed on the heads of femurs which had been removed during hip ar

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Forbes, Tamsin, and Tony Forbes. "Hanoi revisited." Mathematical Gazette 100, no. 549 (2016): 435–41. http://dx.doi.org/10.1017/mag.2016.108.

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We consider a simple extension of the familiar Tower of Hanoi puzzle. There are three vertical pegs lined up in a row and n discs. The discs have holes in their centres so that they can be threaded on to the pegs. Initially, all n discs are placed on the left-hand peg in non-increasing order of radius to form a tower, as in Figure 1. The object of the game is to transfer the entire tower to the right-hand peg by moving discs from peg to peg, one at a time according to the rules:(1) only a disc at the top of a tower may be moved;(2) a disc must never be placed on top of a smaller disc.

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Yagodkin, Maksim Viktorovich. "Study of the formation of the moment on the cutting tool axis when machining threaded holes ultra-small diameter." Metalloobrabotka, no. 6 (2018): 35–38. http://dx.doi.org/10.25960/mo.2018.6.35.

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37

Chen, Wei, Jurat, Chenwei Zhang, Xianda Ai, and Paerhati·Rexiti. "Mechanical analysis of cement-enhanced novel variable-diameter all-cortical bone threaded screws in the human L4 lumbar spine." Journal of Physics: Conference Series 3006, no. 1 (2025): 012009. https://doi.org/10.1088/1742-6596/3006/1/012009.

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Abstract Purpose: A cemented common variable-diameter all-cortical bone screw was designed by the modified cortical bone trajectory (MCBT) nailing technique and is scheduled to be fully validated for its mechanical properties in the MCBT technique. Methodologies: The design of this screw follows the strict requirements of the MCBT technology and is modeled after a modified version of the reducer screw. The pitch of the screw is set at 2mm to ensure stability and accuracy during implantation. The screw has a total length of 47mm. The upper part is designed with a coarse diameter of 5.5mm to enh

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Miró, José Ignacio, Adolfo Galán, and Enrique Guerado. "Dorsal Support System Fixed to Volar Plate in Distal Articular Radius Fractures." Revista Iberoamericana de Cirugía de la Mano 48, no. 01 (2020): 066–70. http://dx.doi.org/10.1055/s-0040-1708461.

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AbstractDespite the development of new dorsal low-profile, locked plates to treat distal radius fractures with articular patterns that require a dorsal support, many published series revealed complications associated with such devices. In this paper, we present three cases of comminuted fractures and dorsal die punch fragment treated by osteosynthesis using volar plate and dorsal support screw with double washer fixed to the plate through a mini dorsal approach and, from a volar position, a cup inserted in one of the distal holes of the plate to which a screw and two 7- and 13-mm washers are t

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Mitra, Samik, and Santabrata Das. "Low-angular-momentum General Relativistic Magnetohydrodynamic Accretion Flows around Rotating Black Holes with Shocks." Astrophysical Journal 971, no. 1 (2024): 28. http://dx.doi.org/10.3847/1538-4357/ad55cb.

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Abstract We investigate the global structure of the general relativistic magnetohydrodynamic (GRMHD) accretion flows around Kerr black holes containing shock waves, where the disk is threaded by radial and toroidal magnetic fields. We self-consistently solve the GRMHD equations that govern the flow motion inside the disk and for the first time, to our knowledge, we obtain the shock-induced global GRMHD accretion solutions around weakly as well as rapidly rotating black holes for a set of fundamental flow parameters, such as energy ( E ), angular momentum ( L ), radial magnetic flux (Φ), and is

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Ho, Benjamin Xi En, and Wen-Tsao Ho. "Using an Innovative Protective Sleeve to Reduce Skin Compression Complications in Axillary Osmidrosis Surgery." Plastic and Aesthetic Nursing 44, no. 3 (2024): 210–12. http://dx.doi.org/10.1097/psn.0000000000000573.

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Osmidrosis is a condition characterized by malodorous sweat production in the armpits that often necessitates surgical intervention with tie-over bandages in the axillary area. Standard tie-over bandages may cause skin compression-related complications, such as bruising and skin erosion. To address this issue, we developed a novel technique using a modified protective sleeve. We conducted an observational study involving 60 patients undergoing axillary osmidrosis surgery and divided them into groups. In the experimental group we used a novel technique that included using a modified protective

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Jermak, Helen, Iain A. Steele, and Robert J. Smith. "MOPTOP: Multi-colour Optimised Optical Polarimeter." Proceedings of the International Astronomical Union 12, S324 (2016): 357–58. http://dx.doi.org/10.1017/s1743921317002253.

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AbstractPolarimetric measurements are essential for the study of jetted sources associated with black holes, such as γ-ray bursts and blazars. The relativistic jets launched from regions close to the black hole are threaded with magnetic fields, which produce synchrotron emission, and can be studied with polarimetric measurements. The multi-colour, optimised, optical polarimeter (MOPTOP) is a multi-band imaging instrument designed for use on the Liverpool Telescope. By replacing the rotating polaroid with a half wave plate and beam splitter, the instrument utilises twice as much of the incomin

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Packer, Jeffrey. "Innovations for Bolted RHS Column Splices." ce/papers 6, no. 3-4 (2023): 866–70. http://dx.doi.org/10.1002/cepa.2378.

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AbstractTwo novel concepts, recently developed in North America, are presented for bolted splices between Rectangular Hollow Section (RHS) column members. Single‐sided bolting through the RHS wall is performed, but using regular high‐strength bolts rather than “blind bolts”. The first concept employs nut‐holding devices, called “Shurikens”, that are pre‐installed on four splice plates fitted to the inside of the two RHS columns. The second innovation is a custom‐designed, hollow, cast steel insert – made of nut‐quality steel – that extends into both the upper and lower columns and has threaded

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Antonelli, Michele Gabrio, and Pierluigi Beomonte Zobel. "Automated Screwing of Fittings in Pneumatic Manifolds." International Journal of Automation Technology 15, no. 2 (2021): 140–48. http://dx.doi.org/10.20965/ijat.2021.p0140.

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The task of screwing is based on a set of actions with no added value, requiring precision, attention, and repeatability. These set of actions could consist of alienating and demanding activity for a human operator. Collaborative robotics can facilitate the performance of such tasks. This investigation focuses on the development of a smart station for the automated screwing of fittings in pneumatic manifolds. The collaborative robot Sawyer produced by Rethink Robotics is equipped with an appropriate end-effector and was utilized to receive the fittings from a vibrating feeder towards the end-e

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Wu, Lien-Chen, Yueh-Ying Hsieh, Fon-Yih Tsuang, Yi-Jie Kuo, and Chang-Jung Chiang. "Cutting Flute and Thread Design on Self-Tapping Pedicle Screws Influence the Insertion Torque and Pullout Strength." Applied Sciences 12, no. 4 (2022): 1956. http://dx.doi.org/10.3390/app12041956.

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Self-tapping screws are commonly used in trauma and maxillofacial surgery and are increasingly used for pedicle screw insertions. In order to evaluate how the quantity and length of cutting flutes on self-tapping pedicle screws affect the insertion torque and pullout strength, eight different self-tapping pedicle screw designs were evaluated. All screws had a threaded length of 35 mm and featured variations in the number of leads, as well as the length and quantity of cutting flutes. Five samples of each design were inserted into pre-drilled, untapped holes (ø2.7 mm, length 35 mm) in sawbone b

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Kopec, Mateusz, Adam Brodecki, Grzegorz Szczęsny, and Zbigniew L. Kowalewski. "Microstructural Analysis of Fractured Orthopedic Implants." Materials 14, no. 9 (2021): 2209. http://dx.doi.org/10.3390/ma14092209.

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In this paper, fracture behavior of four types of implants with different geometries (pure titanium locking plate, pure titanium femoral implant, Ti-6Al-4V titanium alloy pelvic implant, X2CrNiMo18 14-3 steel femoral implant) was studied in detail. Each implant fractured in the human body. The scanning electron microscopy (SEM) was used to determine the potential cause of implants fracture. It was found that the implants fracture mainly occurred in consequence of mechanical overloads resulting from repetitive, prohibited excessive limb loads or singular, un-intendent, secondary injures. Among

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Bikkina, Venkatesh, Sadasiva Rao Talasila, and Kumar Adepu. "Influence of hybrid pin profile on microstructural and mechanical properties of Al/SiC graded composites produced by friction stir processing." Journal of Physics: Conference Series 2070, no. 1 (2021): 012187. http://dx.doi.org/10.1088/1742-6596/2070/1/012187.

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Abstract Friction stir processing (FSP) was employed to fabricate a surface graded composite by embedding SiC reinforcement particles in an AA6082-T6 matrix. Conical blind holes were drilled on the surface of the plate with varying inter-hole distances. The processing was performed with the different number of passes by keeping rotational and traverse speed constant. A new hybrid tool with a combination of conventional conical threaded tool and the triangular cross-sectioned tool was used in processing. The microstructural features of the processed samples were examined by a 3D microscope and

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Matsumoto, Ryoji, and Mami Machida. "Sawtooth-like oscillations of black hole accretion disks." Proceedings of the International Astronomical Union 2, S238 (2006): 37–42. http://dx.doi.org/10.1017/s1743921307004656.

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AbstractWe studied the origin of quasi-periodic oscillations (QPOs) of X-rays in black hole candidates by three-dimensional global resistive magnetohydrodynamic simulations of accretion disks. Initial state is a rotating disk threaded by weak toroidal magnetic fields. General relativistic effects are simulated by using the pseudo-Newtonian potential. When the temperature of the outer disk decreases, the accreting matter accumulates into an inner torus.We found that the inner torus is deformed into a crescent shape and that it shows sawtooth-like oscillations of magnetic energy with frequency 3

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Chan, Ho-Sang, Prasun Dhang, Jason Dexter, and Mitchell C. Begelman. "The Impact of Plasma Angular Momentum on Magnetically Arrested Flows and Relativistic Jets in Hot Accretion Flows around Black Holes." Astrophysical Journal 985, no. 1 (2025): 135. https://doi.org/10.3847/1538-4357/adce7f.

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Abstract In certain scenarios, the accreted angular momentum of plasma onto a black hole could be low; however, how the accretion dynamics depend on the angular momentum content of the plasma is still not fully understood. We present three-dimensional, general relativistic magnetohydrodynamic simulations of low angular momentum accretion flows around rapidly spinning black holes (with spin a = +0.9). The initial condition is a Fishbone–Moncrief (FM) torus threaded by a large amount of poloidal magnetic flux, where the angular velocity is a fraction f of the standard value. For f = 0, the accre

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Danylova, Liudmyla, Serhii Lapkovskyi, and Vasyl Prykhodko. "Peculiarities of calculating the diameter of the hole for setting the thread-forming part." Mechanics and Advanced Technologies 6, no. 2 (2022): 151–60. http://dx.doi.org/10.20535/2521-1943.2022.6.2.264828.

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The effectiveness of technologies is determined by the total technical effect obtained from their implementation. One of the ways to improve technology efficiency indicators is the introduction of assembly-thread-forming processes based on the use of thread-forming fasteners in product designs. Thread-forming screws, pins, bushings are screwed into smooth holes and form a threaded profile by cutting or deformation. The reduction in labor intensity is achieved by eliminating the operation of preliminary threading, and the resulting connections have high operational and technical indicators. In

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Harshwardhan, Hemeshwar, and Buddhi Prakash Verma. "Functional outcome of proximal humerus fracture treated with proximal humerus interlocking system plating." International Journal of Research in Orthopaedics 5, no. 5 (2019): 936. http://dx.doi.org/10.18203/issn.2455-4510.intjresorthop20193838.

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<p class="abstract"><strong>Background:</strong> Proximal humerus fractures account for 4-5% of all fractures. They are the commonest fractures in elderly population, which ranks the third, after hip and distal radius fractures respectively. Displaced fractures treated by pinning, cancellous screws, intra-medullary nails, proximal humeral plates and hemiarthroplasty. The proximal humerus interlocking system (PHILOS) plate is anatomically contoured and the threaded screw heads are locked into the threaded plate holes which allow early rehabilitation. The aim of this study is t

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