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Journal articles on the topic 'Torsion test'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Qi, Zhiqiang, Cheng Zhang, Liang Qiao, Jian Qin, and Shunling Wang. "The Test Study on Tension-torsion Coupling Effect of ACSR in Overhead Transmission Lines." Journal of Physics: Conference Series 2731, no. 1 (2024): 012027. http://dx.doi.org/10.1088/1742-6596/2731/1/012027.

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Abstract In order to analyze the relationship between the tensile and torsional characteristics of the Aluminum Conductor Steel Reinforced (ACSR), test research on the coupling effect of tension and torsion in conductors was carried out. A conductor tension-torsion coupling test device was designed, and selected the JL/G1A-630/45-45/7 ACSR as sample which is commonly used in ultra-high voltage AC engineering. The relationship between conductor tension, torque, and tensile strain, torsional strain was measured. And obtain the stiffness coefficients of conductor tension, torsion, and tension-tor

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2

Li, Xin, and Li Liang. "Experimental and Numerical Study on Torsional Behavior of Precast Concrete Screw Pile Body." Applied Mechanics and Materials 188 (June 2012): 137–43. http://dx.doi.org/10.4028/www.scientific.net/amm.188.137.

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Precast concrete screw pile is a new kind of pile foundation. Because the pile bears very large torsion in construction, the torsional properties of pile body including cracking torsion, ultimate torsion and torsional deformation were studied in this paper in order to improve the anti-torsional ability of precast concrete screw pile. Experimental method and numerical method are used to research the torsional behavior of precast concrete pile body. Experimental and numerical results of cracking torsion, ultimate torsion and relationship between torsion and angle of twist per unit length of diff

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3

Jiang, Chenchen, Haojian Lu, Ke Cao, Wenfeng Wan, Yajing Shen, and Yang Lu. "In Situ SEM Torsion Test of Metallic Glass Microwires Based on Micro Robotic Manipulation." Scanning 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/6215691.

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Microwires, such as metallic, semiconductor, and polymer microwires and carbon fibers, have stimulated great interest due to their importance in various structural and functional applications. Particularly, metallic glass (MG) microwires, because of their amorphous atoms arrangement, have some unique mechanical properties compared with traditional metals. Despite the fact that substantial research efforts have been made on the mechanical characterizations of metallic glass microwires under tension or flexural bending, the mechanical properties of microwires under torsional loading have not bee

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4

Zhou, Hai Jun, Hong Hong Huang, and Hua Zhang. "An Experimental Study on Mechanical Behavior of Superelastic NiTi Shape Memory Alloy Bar Subjected to Torsion." Advanced Materials Research 163-167 (December 2010): 3992–95. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3992.

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An experimental study on mechanical behavior of superelastic NiTi shape memory alloy (SMA) bar subjected to torsion was made. The SMA specimen was in round bar shape, material phase was austenite and stress mode was torsion. The test was carried out by applying repeated cyclic uniform torsional load. Strain rate, strain amplitude and number of cycles were considered as test parameters. The test was described and analyzed in terms of three fundamental mechanical quantities: secant stiffness, energy loss per unit weight and equivalent damping. The test results show that SMA bar subjected to tors

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5

Thiyyakkandi, Sudheesh, Michael McVay, Peter Lai, and Rodrigo Herrera. "Full-scale coupled torsion and lateral response of mast arm drilled shaft foundations." Canadian Geotechnical Journal 53, no. 12 (2016): 1928–38. http://dx.doi.org/10.1139/cgj-2016-0241.

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Drilled shaft foundations supporting mast arm assemblies are subjected to significant torsion and lateral load during severe wind loading (e.g., hurricane). Past centrifuge studies in granular soils suggest that the design of such foundations should be performed for a coupled load case, since the lateral resistance is considerably reduced by the concurrent application of torsion. However, current design practice still considers lateral load and torsion independently due to the lack of field verification of centrifuge results. This paper reports on a full-scale test program to investigate the c

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6

Yu, Zhigang, and Deshan Shan. "Experimental and numerical studies of T-shaped reinforced concrete members subjected to combined compression-bending-shear-torsion." Advances in Structural Engineering 24, no. 12 (2021): 2809–25. http://dx.doi.org/10.1177/13694332211012577.

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The study of reinforced concrete members subjected to combined loads always has been an important research topic in the field of engineering, but the torsional behavior of T-shaped reinforced concrete members subjected to combined loads has yet to be determined. This paper is focused on providing a detailed explanation of the torsional behavior of T-shaped reinforced concrete members subjected to combined compression-bending-shear-torsion. From the perspective of experimental tests and numerical analyses, in this paper, we discuss the effects of combined loads on the torsion bearing capacity,

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7

Ashour, Samir A., Sabry A. Shihata, Ali A. Akhtaruzaman, and Faisal F. Wafa. "Prestressed high-strength concrete beams under torsion and bending." Canadian Journal of Civil Engineering 26, no. 2 (1999): 197–207. http://dx.doi.org/10.1139/l98-054.

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Test results of 16 rectangular prestressed high-strength concrete beams subjected to the combined action of torsion and bending are presented. The major variables were the ratio of torsion to the bending moment (T/M) and the prestressing level. The beams were subjected to two levels of prestressing, corresponding to 0.05fc' and 0.10fc', where fc' is the compressive strength of concrete (about 90 MPa). Test results showed that the torque-twist relations for the test beams were approximately linear up to cracking and thereafter became nonlinear. Increasing the T/M ratio and the prestressing leve

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8

Goanta, Viorel. "Device for Torsional Fatigue Strength Assessment Adapted for Pulsating Testing Machines." Sensors 22, no. 7 (2022): 2667. http://dx.doi.org/10.3390/s22072667.

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The torsional fatigue test determines the fatigue limit for a certain asymmetry coefficient of the cycle. The assessment of fatigue tests is performed on specialized machines. There are two types of torsion testing machines: universal machines that have the torsion component and specialized machines only for torsion testing. Nevertheless, no matter which proposed option we choose, the purchase prices for these testing machines or the values spent for self-management are quite high. This paper presented a device used for torsion fatigue testing, adaptable to a universal pulsating testing machin

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9

PRICE, KENNETH L. "A DOMAIN TEST FOR LIE COLOR ALGEBRAS." Journal of Algebra and Its Applications 07, no. 01 (2008): 81–90. http://dx.doi.org/10.1142/s0219498808002679.

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Lie color algebras are generalizations of Lie superalgebras and graded Lie algebras. The properties of a Lie color algebra can often be related directly to the ring structure of its universal enveloping algebra. We study the effects of torsion elements and torsion subspaces. Let [Formula: see text] denote a Lie color algebra. If [Formula: see text] is homogeneous and torsion then x2 = 0 in [Formula: see text]. If no homogeneous element of [Formula: see text] is torsion, then [Formula: see text] so [Formula: see text] is semiprime. In this case we can give a test which uses Gröbner basis method

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10

Da Cruz, Daniel Magalhães, Fernanda Mazuco Clain, and Carlos Eduardo Marcos Guilherme. "Experimental study of the torsional effect for yarn break load test of polymeric multifilaments." Acta Polytechnica 62, no. 5 (2022): 538–48. http://dx.doi.org/10.14311/ap.2022.62.0538.

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Polymeric multifilaments have gained a significant interest in recent decades. In the studies of mechanical characteristics, although there are different types of tests, such as rupture, abrasion, creep, impact and fatigue, it can be said that the main mechanical characterisation is the tensile rupture strength (Yarn Break Load, YBL), which also serves as a parameter for other tests. The objective of this work is to evaluate the results of breaking strength under different torsional conditions in polymeric multifilaments and to determine optimal twists for failures. The test were carried out w

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11

Sung, Po-Hsien, Tei-Chen Chen, and Cheng-Da Wu. "Atomistic Simulation of ZrNi Metallic Glasses Under Torsion Test." Nano 12, no. 08 (2017): 1750094. http://dx.doi.org/10.1142/s1793292017500941.

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ZrNi metallic glass alloy nanowires (NWs) under torsion are studied using molecular dynamics simulations based on the many-body embedded-atom potential. The effect of cooling rate on the deformation mechanism and mechanical properties of ZrNi NWs is evaluated in terms of shear strain, torque, potential energy and radial distribution function. Simulation results show that for slower cooling rates, the NWs have larger packing density, whereas for faster cooling rates, the packing density of atoms decreases. The amount of deformation increases with increasing torsional angle before it reaches a c

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12

Hu, Zongbo, and Jianyang Xue. "Coupled Vibration Mathematical Model of Special-Shaped Column Structure Considering Ground Rotation Effects." Buildings 15, no. 8 (2025): 1300. https://doi.org/10.3390/buildings15081300.

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The establishment of a linear seismic response analysis model that considers ground rotation effects and eccentric torsion informed the investigation of the linear response characteristics of coupled lateral–torsional vibration, considering eccentricity and ground rotation, after which the lateral–torsional coupling linear response pattern of special-shaped column structures is examined. The results show that the torsion angle of a floor is equal to the sum of the interlayer torsion angle caused by eccentric torsion and the pure torsion angle caused by ground rotation, respectively. The natura

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13

Dana, Bima Cahya Maula, Syamsul Hadi, Hangga Wicaksono, and Kris Witono. "THE EFFECT OF THE ANGLE AND DIMENSIONS OF A CROSS-SECTION SPECIMEN ON THE TORSIONAL STRENGTH OF AISI 1020 SQUARE STEEL SHAFT." LOGIC : Jurnal Rancang Bangun dan Teknologi 24, no. 1 (2024): 9–16. http://dx.doi.org/10.31940/logic.v24i1.9-16.

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The unknown torsional strength due to the inconsistency of the angles and dimensions of the square cross-section of AISI 1020 steel specimens in the torsion test is the problem encountered. The research method included: preparation of square AISI 1020 steel specimens measuring 6 mm x 6 mm x 160 mm, measurement of 2 diagonal angles of the cross section of the specimen and dimensions of the cross section at 5 observation points along the specimen receiving torsion loads, torsion testing of specimens, analysis of torsion test results data, and drawing conclusions. The results of the study affect

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14

Jin, Nan, Sébastien Mavromatis, Jean Sequeira, and Stéphane Curcio. "A Robust Method of Eye Torsion Measurement for Medical Applications." Information 11, no. 9 (2020): 408. http://dx.doi.org/10.3390/info11090408.

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The detection of eye torsion is an important element for diagnosis of balance disorders, although it is rarely available in existing eye tracking systems. A novel method is proposed in this paper to provide robust measurement of torsional eye movements. A numerical approach is presented to estimate the iris boundary only according to the gaze direction, so the segmentation of the iris is more robust against occlusions and ambiguities. The perspective distortion of the iris pattern at eccentric eye positions is also corrected, benefiting from the transformation relation that is established for

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15

Markham, Charles H., and Shirley G. Diamond. "A Predictive Test for Space Motion Sickness." Journal of Vestibular Research 3, no. 3 (1993): 289–95. http://dx.doi.org/10.3233/ves-1993-3309.

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Eye torsion was examined in 13 astronaut subjects, tested during repeated episodes of 0 G and 1.8 G in parabolic flight aboard NASA’s KC-135. Four findings are included. 1) A strong relationship between previous history of SMS and ocular torsional disconjugacy in novel gravitational states. 2) Responses were unchanged in 4 subjects retested a year later. 3) Ocular torsional disconjugacy scores increased as exposure to 0 and 1.8 G increased. This was particularly evident in subjects who had had SMS. 4) Torsional studies during 10 to 20 parabolas are required to accurately predict SMS. The hypot

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16

Zhu, Yingbo, Shui Wan, Kongjian Shen, Qiang Su, and Xiayuan Li. "Modified rotating-angle softened truss model for composite box-girder with corrugated steel webs under pure torsion." Advances in Structural Engineering 23, no. 9 (2020): 1902–21. http://dx.doi.org/10.1177/1369433219898063.

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Replacement of traditional concrete webs with corrugated steel webs will lead to a significant decrease in torsional stiffness of composite box-girder with corrugated steel webs, which needs special attention in the design of wide and curved composite box-girder with corrugated steel webs. To improve the accuracy of prediction on the entire torsional performance of composite box-girder with corrugated steel webs, a modified rotating-angle softened truss model for torsion is developed in this study. Modified rotating-angle softened truss model for torsion mainly takes into account the new three

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17

Lu, Xiuyu, Jing Liu, Guifeng Zhou, Lulu Feng, and Zhen Wang. "Correlation between Microstructural Evolution and Mechanical Properties of 2000 MPa Cold-Drawn Pearlitic Steel Wires during Galvanizing Simulated Annealing." Metals 9, no. 3 (2019): 326. http://dx.doi.org/10.3390/met9030326.

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In the present experiment, hot-dip galvanizing simulated annealing of 2000 MPa cold-drawn pearlitic steel wires was carried out at 450 °C. The effects of microstructural evolution on the mechanical properties of the as-prepared wires were analyzed through scanning electron microscopy (SEM), transmission electron microscopy (TEM), tensile test, torsion test, and Vickers hardness test. In addition, the relationship between torsion laps and microstructural evolution of cold-drawn pearlitic steel wires was investigated in detail. It was found that the torsional performance of the wires deteriorate

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18

Gusel, Leo. "Multi Regression Analysis of Flow Curve Obtained by Torsion Test." Advanced Materials Research 856 (December 2013): 159–63. http://dx.doi.org/10.4028/www.scientific.net/amr.856.159.

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This paper presents determination of flow curve of steel by using multi regression analysis based on only few experimental points of torsion test. It is necessary to know the flow curve of the formed metal and the best way to obtain one are different experiments such as tensile, upsetting or torsion tests. In the paper torsion test was used for obtaining the flow curve. In torsion test a cylindrical specimen is twisted by torque acting around its axis. Experimental data of torsion test were processed by determination of statistical characteristic of experimental results.

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19

Tjell, Carsten. "Smooth Pursuit Neck Torsion Test-." Journal of Whiplash & Related Disorders 1, no. 2 (2002): 9–24. http://dx.doi.org/10.1300/j180v01n02_02.

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20

Fatihhi, S. J., Syahrom Ardiyansyah, Muhamad Noor Harun, and Mohammed Rafiq Abdul Kadir. "Mechanical Properties of Trabecular Bone through Compression and Combined Compression-Torsion Test: A Comparative Study." Applied Mechanics and Materials 393 (September 2013): 415–21. http://dx.doi.org/10.4028/www.scientific.net/amm.393.415.

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In realistic service of life, trabecular bone is subjected to multiaxial stress histories during physiological routine activities thus investigation on the mechanical environment is important to evaluate the mechanistic aspects of bone failure in trauma. This study attempts to compare the material properties of trabecular bone with regard to mechanical properties in axial compression and combined compression-torsion. How superimposed axial compression and torsion loads would alter the axial mechanical properties is explained. Shear loading demonstrates tenfold reduction in modulus and 27% redu

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21

FUJII, Mitsumi, and Fumihito NISHIMURA. "Development of Pure Torsion Test System for Micro Torsion Bars." Journal of the Japan Society for Precision Engineering 89, no. 3 (2023): 275–80. http://dx.doi.org/10.2493/jjspe.89.275.

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22

Sanok, Artur, Jacek Domski, Janusz Kobaka, and Dominik Logoń. "Torsional Behavior of Waste Fiber-Reinforced Concrete." Materials 17, no. 13 (2024): 3269. http://dx.doi.org/10.3390/ma17133269.

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Factory made steel fiber and steel fiber derived from worn tires was used to develop cement concrete, which was subjected to torsional forces. A dedicated stand for torsion tests, allowing for the measurement of force, deflection, and torsion angle, was used. The test results showed that both the factory-made fiber and the waste steel fiber significantly improved torsional properties of the concrete matrix. The test results of specimens made with waste fiber were characterized by slightly worse results compared to factory-made fibers, but there was a significant improvement in torsional proper

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23

Bai, Haoyang, Jiafei Jiang, Weichen Xue, and Xiang Hu. "Experimental Investigation on Pure Torsion Behavior of Concrete Beams Reinforced with Glass Fiber-Reinforced Polymer Bars." Buildings 14, no. 9 (2024): 2617. http://dx.doi.org/10.3390/buildings14092617.

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The failure mechanism of torsional concrete beams with fiber-reinforced polymer (FRP) bars is essential for developing the design method. However, limited experimental research has been conducted on the torsion behavior of concrete beams with FRP bars. Therefore, the pure torsion test of four large-scale FRP-RC beams (2800 mm × 400 mm × 200 mm) was conducted to investigate the influence of the stirrup ratio (0, 0.49%, and 0.98%) and longitudinal reinforcement ratio (3.01%, 4.25%) on torsion behavior. The test results indicated that three typical failure patterns, including concrete cracking fa

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24

Thiyyakkandi, Sudheesh, Michael McVay, Peter Lai, and Rodrigo Herrera. "Suitability of jetted and grouted precast pile for supporting mast arm structures." Canadian Geotechnical Journal 54, no. 9 (2017): 1231–44. http://dx.doi.org/10.1139/cgj-2016-0467.

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Jetted and grouted precast piles (JGPPs) are prefabricated piles installed utilizing jetting and pressure grouting. These piles are well-suited for urban environments as they overcome the inherent drawbacks of currently chosen deep foundations (e.g., noise and vibration disturbances due to pile driving, quality control issue with cast-in-place construction). Past studies in a large test chamber facility have shown that JGPPs can support very high axial and torsional loads owing to their improved skin and tip resistances subsequent to the side- and tip-grouting. However, this new pile has not y

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25

Joh, Changbin, Imjong Kwahk, Jungwoo Lee, In-Hwan Yang, and Byung-Suk Kim. "Torsional Behavior of High-Strength Concrete Beams with Minimum Reinforcement Ratio." Advances in Civil Engineering 2019 (January 17, 2019): 1–11. http://dx.doi.org/10.1155/2019/1432697.

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Although there is a growing trend to use higher strength for concrete and steel in reinforced concrete structures due to the lightness and slenderness of these members together with the simplified arrangement of their reinforcement, there is still the necessity to inspect the reduction of ductility resulting from the gain in strength. Taking into account that this also concerns the design for torsion, this study intends to investigate the regulations related to the torsional minimum reinforcement ratio in view of the minimum ductility requirement with focus on Eurocode 2. To that goal, the rel

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Talaeitaba, Sayed Behzad, and Davood Mostofinejad. "A New Test Setup for Experimental Test of RC Beams under Combined Shear and Torsion." Advanced Materials Research 335-336 (September 2011): 355–58. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.355.

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Studying the RC beams’ behavior, when they are exposed to combined shear and torsion is one of the most important problems in civil engineering which has been going on for half a century. In this study, to build a suitable set up and to load the beams properly, is of special importance when an area of little bending as the test area is needed in the pure shear and torsion test. In this investigation, based on the primary principle of structure analysis and fixed support, a setup is developed and its efficiency has been evaluated. Also this support system has been tested for five RC beams under

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27

Pelegrini, Graziella, Gabriel Barcelos Só, Murilo Alcalde, Rodrigo Vivan, Marco Antonio Húngaro Duarte, and Fernando Branco Barletta. "ASSESSMENT OF TORSION RESISTANCE OF GLIDE PATH ROTARY INSTRUMENTS." Journal of Research in Dentistry 11, no. 1 (2023): 7–13. http://dx.doi.org/10.59306/jrd.v11e120237-13.

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NiTi endodontic instruments for glide path are the most susceptible to fractures inside the root canal, mainly as a result of high torsional stress. Objective: The present study investigated the resistance to torsion and angular deflection of instruments destined for the glide path: ProGlider #16.02; T-File #17.02 and the MK Life #16.02. Materials and methods: Thirty rotating NiTi glide path instruments (n=10) with 25mm lengths were selected. The torsion test was performed based on ISO 3630-01 (1992). Three millimeters from the tip of the instruments, it was attached to a small load cell by a

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Marciniak, Zbigniew, and Dariusz Rozumek. "Fatigue Crack Growth Rate under Different Bending to Torsion Ratios in 10HNAP Steel." Key Engineering Materials 465 (January 2011): 187–90. http://dx.doi.org/10.4028/www.scientific.net/kem.465.187.

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The paper contains the fatigue test results of rectangular cross-section specimens made of 10HNAP steel. The specimen height to width ratio was 1.5. Bending with torsion tests were carried out for the following ratios of bending to torsional moments MaB / MaT = 0.47, 0.94, 1.87 and the loading frequency 26.5 Hz. The tests were performed in a high cycle fatigue regime for the stress ratio R = - 1 and phase shift between bending and torsion loading equal to  = 0.

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Jian, Ranran, Weimin Yang, Mohini Sain, Chuanwei Zhang, and Lupeng Wu. "Design and Ductile Behavior of Torsion Configurations in Material Extrusion to Enhance Plasticizing and Melting." Polymers 13, no. 18 (2021): 3181. http://dx.doi.org/10.3390/polym13183181.

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In the present work, the ductile formation mechanism of a newly proposed torsion configuration has been investigated. One of the unique attributes of this paper is the first-time disclosure of the design and fabrication of a novel prototype screw with torsional flow character validating the orthogonal test model experimentally. The torsional spiral flow patterns that occurred in the torsion channel cause a ductile deformation of polymer in the form of a spiral, which in turn enhances the radial convection, achieving an effective mass transfer of material from the top region to the bottom regio

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Fang, Shu-juan, and Qing-tao Lv. "EPS Sensor Torsion Bar Design and Structure Analysis." MATEC Web of Conferences 232 (2018): 04051. http://dx.doi.org/10.1051/matecconf/201823204051.

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Torsion bar design is very important on Electrical power steering(EPS) development. The mathematical model and structure for torsion bar are developed, and the torsion bar outer spline is cancelled based on the automotive parameters. This kind of structure leads to cost down and time saving on torsion bar manufacturing process. The 3D model and finite element on sub-EPS(torsion bar, input shaft, output shaft) are developed, and then do the contact nonlinear analysis based on interference between torsion bar and output shaft. The EPS structure and test reliability according to function test and

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Kim, Jungyun. "Launching Performance Analysis of a Continuously Variable Transmission Vehicle With Different Torsional Couplings." Journal of Mechanical Design 127, no. 2 (2005): 295–301. http://dx.doi.org/10.1115/1.1814387.

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This article describes the launching behaviors of passenger cars equipped with continuously variable transmission (CVT), which have different torsional couplings: a torsion damper and a dual mass flywheel. To reduce the driveline vibration and noise, a torsional coupling is installed in the CVT vehicle, in which the wet type multiplate clutch is used as a start device. In addition, a torsional coupling makes considerable effects on the launching performance of a vehicle. The launching performances, considered here, are the acceleration performance with various throttle positions and the transi

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Kiss, Imre, and Vasile Alexa. "Study on Deformation Behavior of Non–Hardenable Austenitic Stainless Steel (Grade X5CrNi18–10) by Hot Torsion Tests." Tehnički glasnik 14, no. 3 (2020): 396–402. http://dx.doi.org/10.31803/tg-20200317151347.

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The steel’s deformation resistance, in which high strain rates have an important influence on the mechanism of failure, might be obtained from a suitably instrumented torsion test. Determination of stainless steel deformability by hot torsion test is the only method that allows obtaining large deformations along the length of the test specimen, so it is mainly used to determine the characteristics at large plastic deformations. By this method, the hot deformability of stainless steel is determined by subjecting to hot torsion the cylindrical stainless steel specimens maintained at the deformat

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Zhu, Mingqiao, Zefeng Yan, Lin Chen, Zhongliang Lu, and Y. Frank Chen. "Experimental study on composite mechanical properties of a double-deck prestressed concrete box girder." Advances in Structural Engineering 22, no. 12 (2019): 2545–56. http://dx.doi.org/10.1177/1369433219845150.

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A series of tests were carried out on a scaled (1:8) double-deck prestressed concrete box girder in this study, aiming to study the structural response and failure mechanism of the box girder under prestressed axial compression, transverse bending, and torsion. The test results, such as the twist angle, crack development, and distortion of the box girder, were analyzed in detail. The results show that (1) the box girder eventually suffered lateral bending damage, and the cross-section of the support distorted severely; (2) torsional cracking occurred in the pure torsion region at the mid-span,

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Wang, Jian Guo, Jun Gang Nan, Yong Hao Zhang, Dong Liu, Ying Jing Yuan, and Yan Hui Yang. "Deformation Characteristics and Microstructure of Nickel-Based Alloy Combined under Compression and Torsion." Materials Science Forum 1145 (March 13, 2025): 127–39. https://doi.org/10.4028/p-m8bbhs.

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Nickel-based superalloys are the most widely used material in aircraft engines and are characterized by high organizational sensitivity, narrow forging window, and large deformation resistance, which make their structural regulation particularly difficult. This article studies the compression-torsion composite deformation process of Inconel 718 alloy as a research object using finite element simulation and Gleeble compression-torsion deformation test to study the compression-torsion composite deformation process of thermal parameter law and organization distribution law. The results suggest th

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Jung, Jaeho, and Jonathan M. Holmes. "Quantitative intraoperative forced torsion traction test." Journal of American Association for Pediatric Ophthalmology and Strabismus 19, no. 4 (2015): e13. http://dx.doi.org/10.1016/j.jaapos.2015.07.019.

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Garcia de Andrade, L. C. "Electron gyroscopes to test torsion gravity?" Il Nuovo Cimento B 109, no. 10 (1994): 1123–27. http://dx.doi.org/10.1007/bf02723236.

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37

Martins, Renata de Castro, Maria Guiomar de Azevedo Bahia, and Vicente Tadeu Lopes Buono. "The Influence of Cyclic Straining in Torsion on Fatigue Resistance and Torsional Properties of ProTaper NiTi Endodontic Instruments." Materials Science Forum 643 (March 2010): 79–90. http://dx.doi.org/10.4028/www.scientific.net/msf.643.79.

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This study evaluated the influence of cyclic straining in torsion on fatigue resistance and torsional properties of ProTaper (S1, S2, F1, F2, F3) NiTi instruments. The mechanical behavior was evaluated by means of torsion and bending tests, performed according to ISO 3630-1 specification, while the fatigue resistance was evaluated using a bench test device employing an artificial canal with 5mm curvature radius and angle of curvature of 45º. The dimensional aspects, diameter (D3) and cross-sectional area (A3) at 3mm from the tip of the instruments were determined by means of image analysis of

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Provost, P. J., J. A. Stick, J. S. Patterson, J. G. Hauptman, N. E. Robinson, and R. Roth. "Effects of heparin treatment on colonic torsion-associated hemodynamic and plasma eicosanoid changes in anesthetized ponies." American Journal of Veterinary Research 52, no. 2 (1991): 289–97. http://dx.doi.org/10.2460/ajvr.1991.52.02.289.

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SUMMARY Large colon torsion frequently is a fatal condition in horses. The purpose of the study reported here was to determine systemic arterial pressure, plasma eicosanoid concentrations, colonic blood flow, vascular resistance, tissue pH, and morphologic features associated with large colon torsion and detorsion, and to evaluate the effects of sodium heparin (80 IU/kg of body weight, iv) treatment on these values. Values were determined in 20 anesthetized ponies that were randomly assigned into 4 equal groups: control; control/heparin; torsion; torsion/heparin. Torsions were created by a 720

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Erpalov, Mikhail V., and E. A. Kungurov. "Examination of Hardening Curves Definition Methods in Torsion Test." Solid State Phenomena 284 (October 2018): 598–604. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.598.

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Torsion tests allow studying the rheological properties of materials over a wide range of strain and strain rate values, as well as temperature. A key moment in construction of hardening curves is the interpretation of experimental data, which are usually the torque – angle of twist curves. However, there is a number of independent methods to obtain interpretation of experimental data. In addition, there is no single approach to determining the degree of equivalent strain in torsion test. The aim of this paper is to review existing hardening curves definition methods in torsion test and to exa

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Nastitip, Geminingsih, Teuku Budi Aulia, and Muttaqin Muttaqin. "ANALISIS KAPASITAS PUNTIR ELEMEN BALOK BETON MUTU TINGGI DENGAN SUBSTITUSI ADITIF, AGREGAT HALUS SERTA AGREGAT KASAR (PENGGUNAAN FLY ASH BATU BARA, PASIR POZZOLAN DAN CANGKANG SAWIT)." Jurnal Arsip Rekayasa Sipil dan Perencanaan 1, no. 3 (2018): 180–91. http://dx.doi.org/10.24815/jarsp.v1i3.11782.

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Along with the construction development which is not symmetrical and both the column and the beam made small then the torsion load highly affect the building structure. The torsion load often occurs in the building components such as beam, column and the joint of column and beam. The loads of floor plates and small beam will create a torsion moment on the certain beam. Earthquake can cause dangerous torsion force in all elements of building constructions. Like the load outside the center of the mass in which the torsion stress can be very high. This research aims to find out the torsion capaci

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Huțanu, Magdalena Gabriela, Liviu Andrușcă, Marcelin Benchea, et al. "Influence of the Deformation Degree of Combined Loadings on the Structural and Mechanical Properties of Stainless Steels." Journal of Manufacturing and Materials Processing 9, no. 2 (2025): 45. https://doi.org/10.3390/jmmp9020045.

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Stainless steels have many practical applications requiring various mechanical or chemical demands in the working environment. By optimizing a device used in mechanical experiments for torsional loading, several cylindrical samples were tested (both ends twisted with the same torque value in opposite directions) of 316L stainless steel (SS) to evaluate changes in the structural, chemical, and mechanical characteristics. Initially, the experimental samples were pre-loaded by tension in the elastic range (6%) and then subjected to torsion (772°) at different rates: 5, 10, and 20 mm/min. The expe

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Kim, Y. D., H. K. Yang, and J.-M. Hwang. "Development of a simple computerized torsion test to quantify subjective ocular torsion." Eye 31, no. 11 (2017): 1562–68. http://dx.doi.org/10.1038/eye.2017.90.

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Chen, Yeqing, Yi Zeng, Haoran Li, Jiye Zhang, and Lieshan Zhang. "Research on the Measurement Technology of Rotational Inertia of Rigid Body Based on the Principles of Monocular Vision and Torsion Pendulum." Sensors 23, no. 10 (2023): 4787. http://dx.doi.org/10.3390/s23104787.

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Damping is an important factor contributing to errors in the measurement of rotational inertia using the torsion pendulum method. Identifying the system damping allows for minimizing the measurement errors of rotational inertia, and accurate continuous sampling of torsional vibration angular displacement is the key to realizing system damping identification. To address this issue, this paper proposes a novel method for measuring the rotational inertia of rigid bodies based on monocular vision and the torsion pendulum method. In this study, a mathematical model of torsional oscillation under a

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Macikowski, Krzysztof, Bogdan Warda, Grzegorz Mitukiewicz, Zlatina Dimitrova, and Damian Batory. "Change in the Torsional Stiffness of Rectangular Profiles under Bending Stress." Materials 15, no. 7 (2022): 2567. http://dx.doi.org/10.3390/ma15072567.

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This article presents the results of research on the change in torsional stiffness of two rectangular profiles, arranged one on top of the other, which were permanently connected at their ends. The flat bars were expanded in the middle of their active length. The test involved determining the increase in the stiffness of a twisted test set before and after expanding. The authors present an analysis of the structure load and compare the results of tests carried out using analytical (for selected cases), numerical and experimental methods, obtaining satisfactory compliance. The analytical calcul

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Furch, Jan, and Quy Hung Nguyen. "Lifetime Test of Tracked Vehicle Torsion Bars using Monte Carlo Method." Emerging Science Journal 4, no. 5 (2020): 376–89. http://dx.doi.org/10.28991/esj-2020-01238.

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The article deals with the service life of torsion bars in tracked vehicles. The aim of the article is to show the suitability of accelerated tests and modelling for determining the service life of torsion bars, which takes many years in real operation. The design of a test bench for accelerated tests is presented together with limiting conditions, which were afterwards verified. Subsequently, a virtual model of the torsion bar of a tracked vehicle was created with the help of finite elements. Dynamic modelling was performed by MSC Adams software with a module using finite elements. Furthermor

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Zhou, Hong Xia, and Bin Liu. "Characteristics Analysis and Optimization of Flying-Wing Vehicle Structure." Advanced Materials Research 1077 (December 2014): 177–84. http://dx.doi.org/10.4028/www.scientific.net/amr.1077.177.

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To study structural characteristics of flying-wing vehicle, static and dynamic model of half wing span, static and dynamic model of all wing span, optimization model were established. Based on associated static test and ground resonance test data, these models were modified to implement static, dynamic and optimization analysis. Results demonstrated that structural bending and torsional deformations are mainly at outer wing surface. Torsion at inner wing is positive, while torsion at outer wing is negative. Total spar axial force along the wing span increases gradually from inner wing to outer

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Schettino, Giulia, Daniele Serra, Giacomo Tommei, and Vincenzo Di Pierri. "A Test of Gravitational Theories Including Torsion with the BepiColombo Radio Science Experiment." Universe 6, no. 10 (2020): 175. http://dx.doi.org/10.3390/universe6100175.

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Within the framework of the relativity experiment of the ESA/JAXA BepiColombo mission to Mercury, which was launched at the end of 2018, we describe how a test of alternative theories of gravity, including torsion can be set up. Following March et al. (2011), the effects of a non-vanishing spacetime torsion have been parameterized by three torsion parameters, t1, t2, and t3. These parameters can be estimated within a global least squares fit, together with a number of parameters of interest, such as post-Newtonian parameters γ and β, and the orbits of Mercury and the Earth. The simulations hav

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Ge, Shan, Yu Cheng Yin, and Zhi Qiang Liu. "Development and Application of Test Equipment for Torsion Strength of Non-Metal Materials." Key Engineering Materials 492 (September 2011): 1–4. http://dx.doi.org/10.4028/www.scientific.net/kem.492.1.

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In order to determine the torsion strength of non-metal materials at ambient and high temperature, a kind of equipment with inductive heating, infrared thermometer and torque loading by mechanical electrical rider was development. This equipment has advantages such as quick heating, accurate temperature test and controlling, easy controlling and continues of torque loading and test atmosphere can be controlled. The torsion strength of fireclay bricks with sample size of 40 mm × 40 mm × 230 mm, were tested separately at room temperature, 800°C, 1000°C, 1100°C and 1200°C, using this equipment. R

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Wang, Qing-Li, Hang-Cheng Gao, and Kuan Peng. "Study of the Behavior of Square Concrete-Filled CFRP Steel Tubular under a Bending-Torsion Load." Polymers 14, no. 7 (2022): 1472. http://dx.doi.org/10.3390/polym14071472.

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To study the behavior of square concrete-filled CFRP (carbon fiber polymer) steel tubular under bending-torsional load, nine square section concrete-filled CFRP steel tubular specimens are designed. The T-θ curve and failure mode of square concrete-filled CFRP steel tubular are studied under a bending-torsional load. Based on the test results, a finite element modeling method is proposed by using the finite element software ABAQUS, and the simulation results are compared with the experimental results. The results show that the simulation is in good agreement with the experimental results. On t

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Al-Dahiree, Omar Sabah, Raja Ariffin Raja Ghazilla, Mohammad Osman Tokhi, Hwa Jen Yap, and Mustabshirha Gul. "Design and Characterization of a Low-Cost and Efficient Torsional Spring for ES-RSEA." Sensors 23, no. 7 (2023): 3705. http://dx.doi.org/10.3390/s23073705.

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The design of torsional springs for series elastic actuators (SEAs) is challenging, especially when balancing good stiffness characteristics and efficient torque robustness. This study focuses on the design of a lightweight, low-cost, and compact torsional spring for use in the energy storage-rotary series elastic actuator (ES-RSEA) of a lumbar support exoskeleton. The exoskeleton is used as an assistive device to prevent lower back injuries. The torsion spring was designed following design for manufacturability (DFM) principles, focusing on minimal space and weight. The design process involve

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