Relevant bibliographies by topics / Four-Point Bending

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  1. Journal articles

Academic literature on the topic 'Four-Point Bending'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 June 2025

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Journal articles on the topic "Four-Point Bending"

1

KATO, Yuzuru, and Tatsuzo KOGA. "Four-point bending test for orthotropic laminates. (I). Numerical analysis of four-point bending model." Journal of the Japan Society for Aeronautical and Space Sciences 38, no. 440 (1990): 484–93. http://dx.doi.org/10.2322/jjsass1969.38.484.

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2

Aono, Yuuta, Nobukatsu Sato, Shinji Inoue, and Daichi Koga. "Process of Straightening by Three-Point and Four-Point Bending for Curved Brass Rack." International Journal of Automation Technology 16, no. 5 (2022): 598–608. http://dx.doi.org/10.20965/ijat.2022.p0598.

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Racks are typically curved after cutting their gear teeth, and a straightening process is required to correct the distortion due to machining. In this study, key factors in the straightening of curved racks by three-point and four-point bending are examined with to automate the correction. The relationship between load and deformation is plotted in real time to determine the unloading point to correct the target deflection for straightening. The parameters constituting the above-mentioned relationship are important for achieving precise correction. The load and deflection at the central loading point are known to be suitable parameters for three-point bending. The smaller the deflection required for correction, the higher is the precision of the displacement sensor required for three-point bending. In the case of four-point bending, the bending moment and bending angle should be selected. In addition, a four-point bending jig is required to load the uniform bending moment during the correction. A modified four-point bending jig is made and the effectiveness was examined.
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3

Topič, Jaroslav, Jan Bartoš, Lubomír Kopecký, Karel Šeps, Zdeněk Prošek, and Jan Trejbal. "Cement Composite Reinforced with Synthetic Fibers: Comparison of Three-Point and Four-Point Bending Test Results." Applied Mechanics and Materials 827 (February 2016): 332–35. http://dx.doi.org/10.4028/www.scientific.net/amm.827.332.

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Presented article deals with the influence of PET fiber production on the bending strength of cement-based composite when incorporated into the fresh mortar, and comparison of results of 3-point and 4-point bending test. Cement paste samples were reinforced with 2 wt. % of primary or recycled PET fibers. The bending test was performed on prismatic samples with dimension of 40 × 40 × 160 mm. It was found that samples with recycled PET fibers, compared to primary ones, exhibit a decrease in bending strength. In the case of 4-point bending tests, the samples with recycled PET fibers exhibited higher bending strength than reference samples without any fibers. However, in the case of 3-point bending tests, the samples with recycled PET fibers had lower bending strength than the reference ones. The results suggest that recycled PET fibers could be used as an alternative to reinforce cement-based composites.
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JAKUS, KARL, and SHELDON M. WIEDERHORN. "Creep Deformation of Ceramics in Four-Point Bending." Journal of the American Ceramic Society 71, no. 10 (1988): 832–36. http://dx.doi.org/10.1111/j.1151-2916.1988.tb07531.x.

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5

Grédiac, Michel. "Four-point bending tests on off-axis composites." Composite Structures 24, no. 2 (1993): 89–98. http://dx.doi.org/10.1016/0263-8223(93)90030-t.

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6

Mujika, Faustino, Ainhoa Arrese, Itziar Adarraga, and Usue Oses. "New correction terms concerning three-point and four-point bending tests." Polymer Testing 55 (October 2016): 25–37. http://dx.doi.org/10.1016/j.polymertesting.2016.07.025.

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7

Shetty, Santosh, and Tommi Reinikainen. "Three- and Four-Point Bend Testing for Electronic Packages." Journal of Electronic Packaging 125, no. 4 (2003): 556–61. http://dx.doi.org/10.1115/1.1604158.

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This study demonstrates the application of three-point and four-point bending tests for evaluating the reliability of chip scale packages under curvature loads. A three-point bend test is conducted on 0.5-mm-pitch chip-scale packages (CSPs) mounted on FR4 (Flame Retardant) substrates. This test is simulated by using the finite element method and the results are calibrated experimentally to formulate a reliability model. A three-point bend scheme is an ideal choice for generating reliability models because multiple packages can be tested under multiple loads in a single test. This reliability model can be used to predict the durability of the packages in the real product under any printed wiring board (PWB) curvature loading conditions. A four-point bending simulation is also demonstrated on the test substrate. Four-point bending test is an ideal method for testing a larger sample size of packages under a particular predefined stress level. This paper describes the bending simulation and testing on packages in a generic sense. Due to the confidentiality of the test results, the package constructional details, material properties, and the actual test data have not been presented here.
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8

Dhaliwal, Gurpinder S., and Mehmet Akif Dundar. "Four Point Flexural Response of Acrylonitrile–Butadiene–Styrene." Journal of Composites Science 4, no. 2 (2020): 63. http://dx.doi.org/10.3390/jcs4020063.

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Acrylonitrile–Butadiene–Styrene (ABS) is a very significant and widely used amorphous thermoplastic that possesses high impact resistance, toughness, and heat resistance. Bending collapse is a predominant failure of polymeric structural members in the vehicle environment under angled and unsymmetrical collisions. Therefore, it becomes critical to investigate the flexural behavior of the ABS beam and find its energy absorption capabilities under a transverse loading scenario. Four-point bending tests were carried out at different strain rates and at two different span lengths to investigate the deformation behavior of ABS. This paper examines the influence of strain rate, friction coefficient, Generalized Incremental Stress-State MOdel (GISSMO) and Damage Initiation and Evolution (DIEM) damage models, yield surfaces, and the span length on the four-point flexural behavior of the ABS polymeric material. A Semi-Analytical material model (SAMP_1) in LSDYNA was utilized to numerically evaluate the behavior of ABS under four-point bending. From extensive investigative explorations, it was found that the flexural behavior of ABS is dependent upon the span length, loading strain rate, and friction coefficient between the specimen and the supports. The modeling of damage was successfully exemplified by using the inherent damage law of the SAMP-1 material model, GISSMO, and DIEM damage formulations.
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9

Hassan, T., and Z. Liu. "On the difference of fatigue strengths from rotating bending, four-point bending, and cantilever bending tests." International Journal of Pressure Vessels and Piping 78, no. 1 (2001): 19–30. http://dx.doi.org/10.1016/s0308-0161(00)00080-6.

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10

Melzerová, Lenka, Michal Šejnoha, and Pavel Klapálek. "Creep of GLT Beams during Four-Point Bending Test." Applied Mechanics and Materials 827 (February 2016): 243–46. http://dx.doi.org/10.4028/www.scientific.net/amm.827.243.

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The present work is concerned with the evaluation of creep deformation developed during the four-point bending test of glued laminated timber beams. In particular, three deflections (at the mid-span of the beam, and below the points of load application) were recorded for each tested beam. The time variation of deflections at 110 loading levels was examined in details for the set of five beams. It can be seen that the effect of creep covers about 10 – 20% of the overall strain. To proceed with numerical simulations requires, however, building first a reliable computational model that agrees well with purely elastic response of the beam. Thus additional measurements were carried out assuming a rather short hold period to eliminate the creep effects. The results were then compared with numerical simulations promoting the computational model to be used in more advanced simulations incorporating a suitable rheological model.
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