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Готові списки джерел за темами / Cyclic tests, push-over tests / Статті в журналах

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Статті в журналах з теми "Cyclic tests, push-over tests"

Автор: Grafiati

Опубліковано: 11 березня 2023

Оновлено: 31 липня 2025

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1

Nezamian, Abolghasem, Riadh Al-Mahaidi, and Paul Grundy. "Bond strength of concrete plugs embedded in tubular steel piles under cyclic loading." Canadian Journal of Civil Engineering 33, no. 2 (2006): 111–25. http://dx.doi.org/10.1139/l05-091.

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Анотація:

Investigation of the load transfer of concrete plugs to tubular steel piles subjected to tension and compression and cyclic loading has been conducted at Monash University over the past 3 years. The work presented in this paper reports on the results of the combination of pull-out, push-out, and cyclic loading tests carried out on 15 steel tube specimens filled partially with reinforced concrete with variable lengths of embedment. The pull-out force was applied through steel reinforcing bars embedded in the concrete plug, and push-out forces were applied through a thick top circular plate on t

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2

Lin, S. S., C. H. Lai, C. H. Chen, and T. S. Ueng. "Derivation of Cyclic p-y Curves From Instrumented Dynamic Lateral Load Tests." Journal of Mechanics 26, no. 2 (2010): 123–33. http://dx.doi.org/10.1017/s1727719100002987.

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AbstractIn this paper, an efficient method is proposed to derive cyclic p-y curves from either push-over or shaking table test results. The Fourier series function, satisfying the boundary conditions of a pile, is used to represent deflection behavior of the pile-soil system at each instant of time during loading interval. In order to obtain soil reaction along the pile shaft, convergence of the series after differentiation is guaranteed by applying the Cesaro sum technique. Results of four push-over tests and two other shaking table test results, conducted at the National Center for Research

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3

Tokimasa, Katsuyuki. "Life Estimation of SUS304 Steel Subjected to Nonproportionally Combined Push-Pull and Cyclic Torsion at 973K." Key Engineering Materials 345-346 (August 2007): 323–26. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.323.

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The present paper summarizes the fully reversed strain-controlled creep-fatigue tests conducted on thin-walled tubular specimens of SUS304 austenitic stainless steel at 973K in air under push-pull, cyclic torsion, in-phase straining and 90deg out-of-phase straining of push-pull and cyclic torsion. It is shown that, as the results of analysis of the experimental data by the strain-range partitioning methodand the critical plane model parameter, a new inelastic-strain based parameter was proposed for life estimation of SUS304 subject to nonproportionally combined push-pull and cyclic torsion by

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4

Nikitin, A. D., V. Yu Pavlov, and M. S. Egorova. "Cyclic Fatigue Tests of Metals over Extreme Durations." Russian Engineering Research 45, no. 1 (2025): 110–14. https://doi.org/10.3103/s1068798x24703350.

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5

Vaško, A. "Fatigue Properties of Nodular Cast Iron at Low Frequency Cyclic Loading." Archives of Metallurgy and Materials 62, no. 4 (2017): 2205–10. http://dx.doi.org/10.1515/amm-2017-0325.

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Abstract Three melts of ferrite-pearlitic nodular cast iron with different charge composition were used for fatigue tests. Wöhler fatigue curves and fatigue strength were obtained, and microstructure and fracture surfaces were investigated. The aim of the paper is to determine the influence of charge composition on microstructure, mechanical and fatigue properties of synthetic nodular cast irons and their micromechanisms of failure. Fatigue tests were realised at low frequency sinusoidal cyclic push-pull loading (stress ratio R = −1) at ambient temperature (T = 20 ±5°C). They were carried out

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6

Fan, Jian Sheng, and Wen Liu. "Tests on Shear Studs Using Profiled Steel Sheeting Subjected to Cyclic Loading." Applied Mechanics and Materials 578-579 (July 2014): 196–200. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.196.

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Push-out tests were conducted to study the performance of shear studs in composite beams with profiled sheeting. All stud specimens were through-deck welded on steel beams. Three variables, i.e. the presence of profiled sheeting, the direction of the steel sheeting and the loading patterns were studied. Comparison between test results and predictions according to design specifications were also proposed. The research shows that, direction of the profiled steel sheeting has little influence on the ultimate load with shank shearing failure; shear failure of concrete rib decreases the shear stren

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7

Itoh, Takamoto, Fumio Ogawa, and Takahiro Morishita. "Fatigue Testing and Evaluation of Fatigue Strength under Multiaxial Stress State; Why do we need fatigue testing?" MATEC Web of Conferences 159 (2018): 01050. http://dx.doi.org/10.1051/matecconf/201815901050.

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Types of multiaxial fatigue tests and their experimental results are presented in this paper. There are typical three types in multiaxial fatigue tests: the combining push-pull and reversed torsion loading test using hollow cylinder specimen, the biaxial tension-compression test using cruciform specimen and the inner pressure applied the push-pull loading test using the hollow cylinder specimen. In the combining a push-pull loading and a reversed torsion loading test, failure life under non-proportional loading in which principal directions of stress and strain were changed in a cycle was shor

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8

Valente, Marco. "Steel-Concrete Bond Deterioration under Repeated Loading for Different Confinement Levels." Applied Mechanics and Materials 217-219 (November 2012): 188–91. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.188.

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This paper presents the results of experimental tests and numerical analyses concerning the influence of repeated cyclic loading and reinforcement confinement on bond between steel rebar and concrete. Experimental tests of push-pull type were carried out at the Politecnico di Milano on concrete specimens provided with a steel cage of longitudinal bars and stirrups, and reinforced with a single steel rebar. The experimental tests were conducted under monotonic and repeated loading history. Bond strength degradation was observed due to repeated cyclic loading. Detailed three-dimensional finite e

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9

Saito, Shunsuke, Fumio Ogawa, and Takamoto Itoh. "Fatigue Life Properties of Stainless Steels in Wide Ranged Biaxial Stress State." Key Engineering Materials 795 (March 2019): 60–65. http://dx.doi.org/10.4028/www.scientific.net/kem.795.60.

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Multiaxial fatigue tests consisting of push-pull loading and cyclic inner pressure were carried out using hollow cylinder specimens of type 430 stainless and type 316 stainless steels at room temperature. 7 types of cyclic loading paths were employed by combining axial and hoop stresses: a Pull, an Inner-pressure, a Push-pull, an Equi-biaxial, a Square-shape, a LT-shape and a LC-shape. Fatigue lives vary depending on the loading path when those were evaluated by the maximum Mises’ equivalent stress on inner surface of the specimen. The fatigue lives of both the steels showed a similar tendency

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10

Noster, Ulf, and Berthold Scholtes. "Isothermal strain-controlled quasi-static and cyclic deformation behavior of magnesium wrought alloy AZ31." International Journal of Materials Research 94, no. 5 (2003): 559–63. http://dx.doi.org/10.1515/ijmr-2003-0098.

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Abstract The low-cycle and high-cycle fatigue behavior of the Mg-base wrought alloy AZ31 is investigated in the temperature range 20– 300 °C using total-strain-controlled push – pull tests. It is shown that the mechanical properties of the material are substantially influenced by the direction dependent formation of deformation twins and resulting deformation asymmetry. As a consequence tensile mean stresses develop during total-strain-controlled fatigue tests without mean strain.

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11

Vaško, Alan, Juraj Belan, and Eva Tillová. "Study of the fatigue behaviour of synthetic nodular cast irons at low and high frequency cyclic loading." MATEC Web of Conferences 157 (2018): 07014. http://dx.doi.org/10.1051/matecconf/201815707014.

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The paper presents the results of low and high frequency fatigue tests carried out on nodular cast iron. The specimens of synthetic nodular cast irons from three different melts were studied in the high cycle fatigue region (from 105 to 108 cycles) using fatigue experimental equipments for low and high frequency cyclic loading. Low frequency fatigue tests were carried out at frequency f ≈ 120 Hz using the fatigue experimental machine Zwick/Roell Amsler 150HFP 5100. High frequency fatigue tests were carried out at frequency f ≈ 20 kHz using the ultrasonic fatigue testing device KAUP-ZU. Both of

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12

Siller, I., W. Waldhauser, and R. Ebner. "Numerical modelling and physical simulation of the softening behaviour of hot work tool steels during thermal fatigue." Journal de Physique IV 120 (December 2004): 649–56. http://dx.doi.org/10.1051/jp4:2004120074.

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Fatigue due to thermal cycling is one of the main reasons for the damage of tools used in die casting processes. In order to investigate the thermal fatigue behaviour of tool steels a thermal fatigue testing facility was designed and built up. For better understanding of the mechanisms of thermal fatigue finite element-simulations were carried out. To specify the cyclic material behaviour push-pull-tests at different temperatures were performed. The Chaboche-model was used to describe the kinematic material response. Isotropic softening is also taken into account. Depending on the arising accu

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13

Zhang, Jianwei, Zhengfa Li, Fan Wang, Saiyang Zhuo, and Tao Wang. "Seismic Resilience Study of Piers Enhanced by Ultrahigh-Performance Concrete Jackets Based on Cyclic Loading Test and Static Push-Over Curves." Science of Advanced Materials 14, no. 11 (2022): 1679–91. http://dx.doi.org/10.1166/sam.2022.4385.

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The efficiency of novel retrofitting of constructed reinforced concrete piers with ultra-high performance concrete (UHPC) jackets was investigated. Pier specimens were subjected to a series of cyclic quasi-static stress tests, whereby two tests employed UHPC jackets with a single width (UHPC-W), while the other two used UHPC jackets with several narrow widths (UHPC-N). The seismic responses were compared in terms of energy dissipation, ductility, hysteresis curves, and skeleton curves. The seismic capability of reinforced concrete piers is increased by both W-type and N-type UHPC jackets by re

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14

He, Xing, Junfeng Chen, Wei Tian, Yuebing Li, and Weiya Jin. "Low Cycle Fatigue Behavior of Steam Generator Tubes under Axial Loading." Materials 11, no. 10 (2018): 1944. http://dx.doi.org/10.3390/ma11101944.

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Анотація:

Compared with the fatigue properties of the material (Inconel Alloy 690), the real fatigue lives of tubes are more meaningful in the fatigue design and assessment of steam generator (SG) tube bundles. However, it is almost impossible to get a satisfactory result by conducting fatigue tests on the tube directly. A tube with a uniform and thin wall easily fails near the clamping ends under cyclic loading due to the stress concentration. In this research, a set-up for fatigue tests of real tubes is proposed to overcome the stress concentration. With the set-up, low cycle fatigue tests were conduc

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15

Taklas, Mohamad, Moussa Leblouba, Samer Barakat, and Zaid A. Al-Sadoon. "Concrete-to-concrete shear friction behavior under cyclic loading." E3S Web of Conferences 347 (2022): 01001. http://dx.doi.org/10.1051/e3sconf/202234701001.

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The main objective of this paper was to study the concrete-to-concrete shear friction behavior under cyclic loading and different test rates. Eight dynamic push-pull tests were performed on concrete specimens with as-cast surface roughness type applying four different test rates. The test results include the hysteresis loops of the friction force-displacement relations. It is concluded that the dynamic coefficient of friction decreased with the increased test rate. This reduction in the dynamic coefficient of friction should be considered in the design of structural elements under cyclic or dy

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16

Ringas, Nikolas, and Yuner Huang. "Experimental characterisation of connection behaviour for cold‐formed steel panels sheathed with calcium silicate boards." ce/papers 6, no. 3-4 (2023): 1871–78. http://dx.doi.org/10.1002/cepa.2400.

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AbstractConstruction trends aim towards the use of modular cold‐formed steel (CFS) wall panels, comprising of CFS studs and sheathing. Their capacity is influenced by different components employed, with the fastener connection between the sheathing board and the frame being the most critical. Furthermore, as repeated loading scenarios are expected to occur within the life cycle of a structure, it is important to address the uncertainty surrounding the connection behaviour under cyclic loading. A series of push‐out tests were carried out for cold‐formed steel sections sheathed with Calcium Sili

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17

Ali, Qaisar, Tom Schacher, Mohammad Ashraf, et al. "In-Plane Behavior of the Dhajji-Dewari Structural System (Wooden Braced Frame with Masonry Infill)." Earthquake Spectra 28, no. 3 (2012): 835–58. http://dx.doi.org/10.1193/1.4000051.

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This paper presents experimental and numerical investigations conducted on typical dhajji buildings found in the northern mountainous areas of Kashmir and surrounding regions to evaluate their in-plane lateral load response. The experimental work included an in-plane quasistatic cyclic test on three full-scale walls as well as monotonic tension and bend tests on main connections. The test results show that the dhajji-dewari system of buildings possesses tremendous resilience against lateral forces. The function of connections, especially the connections between the vertical posts and bottom pl

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18

Jiang, Jun, Dong Wang, and Dengfeng Fu. "Vertical Monotonic and Cyclic Responses of a Bucket in Over-Consolidated Clay." Journal of Marine Science and Engineering 11, no. 11 (2023): 2044. http://dx.doi.org/10.3390/jmse11112044.

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Bucket foundations, especially multi-bucket foundations, have become an alternative for large offshore wind turbines. Vertical responses of a single bucket are critical for the serviceability design of tripod or tetrapod bucket foundations. Centrifuge tests are conducted to investigate the responses of a single bucket under monotonic and symmetric cyclic loading in over-consolidated clay. The strength of clay is obtained by cone penetration tests. The monotonic vertical capacity measured in the centrifuge tests are compared with the finite element results, with errors less than 6%. The effects

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19

Figueira, Diogo, Carlos Sousa, Rui Calçada, and Afonso Serra Neves. "Push-Off Tests in the Study of Cyclic Behavior of Interfaces between Concretes Cast at Different Times." Journal of Structural Engineering 142, no. 1 (2016): 04015101. http://dx.doi.org/10.1061/(asce)st.1943-541x.0001364.

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20

Šulák, Ivo, Karel Obrtlík, Ladislav Čelko, and Pavel Gejdoš. "Degradation of YSZ/EUCOR TBC Coating System during High Temperature Low Cycle Fatigue Tests." Solid State Phenomena 258 (December 2016): 420–23. http://dx.doi.org/10.4028/www.scientific.net/ssp.258.420.

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Thermal barrier coatings are widely used to protect the substrate from high temperature and extremely aggressive environments in gas engines. In the present article, authors have been studied degradation of complex thermal barrier coating system deposited on polycrystalline nickel superalloy IN 713LC. The substrate material was grit blasted with alumina (Al2O3) particles prior to air plasma deposition of CoNiCrAlY bond coat. Top coat consists of conventional zirconia (ZrO2) stabilized by yttria (Y2O3) -YSZ ceramic in combination with a eutectic nanocrystalline ceramic Eucor made of zirconia (Z

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21

Seracino, R., D. J. Oehlers, and M. F. Yeo. "Behaviour of Stud Shear Connectors Subjected to Bi-Directional Cyclic Loading." Advances in Structural Engineering 6, no. 1 (2003): 65–75. http://dx.doi.org/10.1260/136943303321625748.

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Almost all stud shear connectors in composite steel-concrete bridge beams are subjected to bi-directional cyclic loading at some stage during the fatigue life of the structure. In the assessment of an existing structure, it is desirable to predict the extent of fatigue damage experienced by the stud shear connectors as accurately as possible as this component of the structure can not be visually inspected. However, very little research has been carried out to quantify the fatigue behaviour of stud shear connectors subjected to bi-directional cyclic loading. This paper presents a new push-pull

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22

Klemenz, Manuel, Volker Schulze, Otmar Vöhringer, and Detlef Löhe. "Finite Element Simulation of the Residual Stress States after Shot Peening." Materials Science Forum 524-525 (September 2006): 349–54. http://dx.doi.org/10.4028/www.scientific.net/msf.524-525.349.

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In a three-dimensional Finite-Element-Simulation of shot peening, a combined isotropickinematic viscoplastic material description was introduced in order to describe the cyclic softening effects during peening. After verifying the model in the simulation of push-pull tests at different strain amplitudes it could be used for the shot peening simulation. The simulated residual stress profile is compared with experimental results determined by X-ray diffraction and with simulated results of a simpler isotropic viscoplastic material model.

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23

Moosburger-Will, Judith, Michael Greisel, Michael Schulz, Mario Löffler, Wolfgang M. Mueller, and Siegfried Horn. "Investigation of the fiber-matrix interaction in carbon fiber-reinforced polyether ether ketone by cyclic single fiber push-out and push-back tests." Composite Interfaces 27, no. 2 (2019): 227–47. http://dx.doi.org/10.1080/09276440.2019.1620542.

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24

Prasad, Y. V. S. N., and S. Narasimha Rao. "Pullout behaviour of model pile and helical pile anchors Subjected to lateral cyclic loading." Canadian Geotechnical Journal 31, no. 1 (1994): 110–19. http://dx.doi.org/10.1139/t94-012.

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This paper presents the effect of lateral cyclic loading on the pullout capacity of model and helical piles in clayey soil. The tests were conducted on short rigid model piles in the laboratory in three phases, namely lateral static load tests, lateral cyclic load tests, and vertical pullout tests. From the test results it was found that the lateral cyclic loading affects the pullout capacity of piles substantially. Reduction in pullout capacity mainly depends upon the lateral deflection of the pile during cyclic loading and the embedment ratio of the pile. This reduction in the pullout capaci

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25

Jiang, Jun, Chengxi Luo, and Dong Wang. "Numerical Simulation of Vertical Cyclic Responses of a Bucket in Over-Consolidated Clay." Journal of Marine Science and Engineering 12, no. 8 (2024): 1319. http://dx.doi.org/10.3390/jmse12081319.

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Multi-bucket foundations have become an alternative for large offshore wind turbines, with the expansion of offshore wind energy into deeper waters. The vertical cyclic loading–displacement responses of the individual bucket of the tripod foundation are relevant to the deflection of multi-bucket foundations and crucial for serviceability design. Finite element analyses are used to investigate the responses of a bucket subjected to symmetric vertical cyclic loading in over-consolidated clay. The Undrained Cyclic Accumulation Model (UDCAM) is adopted to characterize the stress–strain properties

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26

Mönch, Simon, Joana A. A. Campos, Alfredo M. P. G. Dias, and Ulrike Kuhlmann. "Influence of the Geometric Properties, the Timber–Concrete Interface, and the Load Protocol on the Mechanical Properties of Timber–Concrete Composite Connections." Applied Sciences 14, no. 15 (2024): 6768. http://dx.doi.org/10.3390/app14156768.

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Timber–concrete composite (TCC) structural systems are characterized by the combination of timber and concrete, which are connected to transmit shear forces between the two elements. In addition, to achieve an efficient connection, the slip between the two materials should be limited. Therefore, the load-carrying capacity, the stiffness, and the failure mode of TCC connections are important for the behavior of the composite element. This work aims to investigate the influence of test conditions on TCC connections using shear tests to determine the mechanical properties of connections. Therefor

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27

Xu, Jun, Huahuai Sun, Weizhen Chen, and Xuan Guo. "Experiment-Based Fatigue Behaviors and Damage Detection Study of Headed Shear Studs in Steel–Concrete Composite Beams." Applied Sciences 11, no. 18 (2021): 8297. http://dx.doi.org/10.3390/app11188297.

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Many in-service bridges with steel–concrete composite beams are currently aging and experiencing performance deterioration. Under long-term cyclic loads from traffic on bridges, headed shear studs in steel–concrete composite beams are vulnerable to fatigue damage. The comprehensive understanding of fatigue behaviors and the feasible detection of fatigue damage of headed shear studs is, thus, crucial for the accurate numerical simulation of the fatigue crack propagation process. The paper, thus, experimentally investigates the fatigue behaviors of headed shear studs through push-out tests of th

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28

Vaško, Alan, Libor Trško, and Mária Chalupová. "Influence of Charge Composition on the Structure and Fatigue Properties of Nodular Cast Irons." Materials Science Forum 782 (April 2014): 295–300. http://dx.doi.org/10.4028/www.scientific.net/msf.782.295.

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The contribution deals with comparison of microstructure and fatigue properties of synthetic nodular cast irons with a different ratio of steel scrap in a charge. Chemical composition of individual meltages was regulated alternatively by ferrosilicon (FeSi) and carburizer or metallurgical silicon carbide (SiC). The fatigue tests were run at high-frequency sinusoidal cyclic push-pull loading (frequency f 20 kHz, load ratio R = 1, temperature T = 20 ± 5 °C) using the ultrasonic testing equipment KAUP-ZU. The paper shows the influence of charge composition on microstructure, fatigue properties an

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29

Saito, Shunsuke, Fumio Ogawa, and Takamoto Itoh. "Fatigue Life Properties of Stainless Steels in Wide Ranged Biaxial Stress States using a Hollow Cylinder Specimen." MATEC Web of Conferences 300 (2019): 09004. http://dx.doi.org/10.1051/matecconf/201930009004.

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Анотація:

Stress controlled multiaxial fatigue tests were carried out using hollow cylinder specimens of type 430 and 316 stainless steels at room temperature. A newly developed fatigue testing machine which can apply push-pull loading and inner pressure to the specimen was used. For inner pressure, oil was put inside of the specimen. 7 types of cyclic loading paths were employed by combining axial and hoop stresses; a Pull, an Inner-pressure, a Push-pull, an Equi-biaxial, a Square-shape, a LT-shape and a LC-shape. Fatigue lives vary depending on the loading path when those were evaluated by the maximum

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30

Sasaki, Katsuhiko, Ken-ichi Ohguchi, and Hiromasa Ishikawa. "Viscoplastic Deformation of 40 Pb/60Sn Solder Alloys—Experiments and Constitutive Modeling." Journal of Electronic Packaging 123, no. 4 (1999): 379–87. http://dx.doi.org/10.1115/1.1371927.

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This study first proposes a simple constitutive model for viscoplasticity, which includes the elastic, plastic, and creep strains independently. The plastic strain is evaluated by the flow rule employing back stresses evolved with a Ziegler type of hardening rule. The creep strain is evaluated by the modified Norton’s law. The applicability of this constitutive model is evaluated with pure tensile tests, creep tests and cyclic tension-compression loading tests, to demonstrate the progress of viscoplastic deformation of 40Pb/60Sn solder alloys. The tests were conducted over both several tempera

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31

Zhou, Z., D. J. White, and C. D. O’Loughlin. "The changing strength of carbonate silt: parallel penetrometer and foundation tests with cyclic loading and reconsolidation periods." Canadian Geotechnical Journal 57, no. 11 (2020): 1664–83. http://dx.doi.org/10.1139/cgj-2019-0066.

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This paper describes a centrifuge study using novel penetrometer tests (T-bar and piezoball) and model foundation tests to explore through-life changes in the strength of a reconstituted natural carbonate silt. The test procedures include episodic cyclic loading, which involves intervals of pore pressure dissipation between cyclic packets. These loads and the associated remoulding and reconsolidation cause significant changes in the soil strength and foundation capacity. Soil strength changes from penetrometer tests differed by a factor of 15 from the fully remoulded strength to a limiting upp

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32

Wang, Jian Jun, and Wei Guo Guo. "Pseudo-Elastic Behavior of NiTi SMA under the Quasi-Static and the Impact Cyclic Tests." Advanced Materials Research 560-561 (August 2012): 13–19. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.13.

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Abstract. To characterize the thermomechanical cyclic response, especially Pseudo-elastic behavior of NiTi shape-memory alloy (SMA) at different temperatures and different loading frequencies, a series of tests of both quasi-static and dynamic uniaxial compression cyclic loading have been performed on cylindrical samples, using an Instron servohydraulic testing machine and the Hopkinson technique. Transformation temperature, after dynamic loading is measured and compared with that of as-received state. The influence of the annealing temperature on the fatigue response is also examined. A few n

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33

Meola, Carosena, Giovanni Maria Carlomagno, Carmela Bonavolontà, and Massimo Valentino. "Monitoring Composites under Bending Tests with Infrared Thermography." Advances in Optical Technologies 2012 (November 7, 2012): 1–7. http://dx.doi.org/10.1155/2012/720813.

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The attention of the present paper is focused on the use of an infrared imaging device to monitor the thermal response of composite materials under cyclic bending. Three types of composites are considered including an epoxy matrix reinforced with either carbon fibres (CFRP) or glass fibres (GFRP) and a hybrid composite involving glass fibres and aluminium layers (FRML). The specimen surface, under bending, displays temperature variations pursuing the load variations with cooling down under tension and warming up under compression; such temperature variations are in agreement with the bending m

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34

Beck, Tilmann, Marcus Klein, Marek Smaga, Frank Balle, and Dietmar Eifler. "Innovative Experimental Approaches and Physical Measurement Methods for Fatigue Monitoring and Life Assessment." Materials Science Forum 879 (November 2016): 205–10. http://dx.doi.org/10.4028/www.scientific.net/msf.879.205.

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The present contribution gives an overview on innovative methods to characterize cyclic deformation and lifetime behavior of metallic materials and hybrid joints based on high precision measurement of electrical resistance, temperature and magnetic properties during fatigue testing. General aim is to minimize the number of fatigue tests for reliable S-N curve calculation. Moreover, instrumented cyclic hardness tests allow short-time assessment of cyclic hardening in case of limited availability of test material. The methods are applied to a wide range of materials, from carbon steels, over cas

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35

Leen, Sean B., Aditya A. Deshpande, and Thomas H. Hyde. "Finite Element Modelling and Experimental Testing of Thermomechanical Behaviour and Failure of Titanium Superplastic Forming Dies." Key Engineering Materials 433 (March 2010): 247–56. http://dx.doi.org/10.4028/www.scientific.net/kem.433.247.

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This paper describes high temperature cyclic and creep relaxation testing and modelling of a high nickel-chromium material (XN40F) for application to life prediction of superplastic forming (SPF) tools. An experimental test programme to (i) characterise the high temperature cyclic elastic-plastic-creep behaviour of the material over a range of temperatures between 20oC and 900oC, including cyclic controlled strain-range tests at different strain-rates and creep relaxation tests, and (ii) identify the material constants relevant to thermo-mechanical fatigue (TMF) life prediction, is described.

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36

Aneke, Frank I., and Denis Kalumba. "Investigating combined effects of saturation–desaturation cycles and cyclic stress resistance of reinforced biopolymer-treated soil." IOP Conference Series: Earth and Environmental Science 1336, no. 1 (2024): 012001. http://dx.doi.org/10.1088/1755-1315/1336/1/012001.

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Abstract Throughout their service life, subgrades endure significant stress from cyclic traffic and seasonal moisture fluctuations. This study aims to evaluate the moisture variation and cyclic stress resistance of reinforced and biopolymer-treated soils, which were treated with varying percentages (0.25%, 0.5%, 0.75%, and 1.0%) of xanthan gum (XG) and sisal fiber, to determine the level of tolerance a subgrade can sustain. Wetting–drying (W-D) cycle tests, unconfined compressive strength (UCS) tests, and dynamic resilient modulus (DRM) tests were conducted to assess the resistance of the trea

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37

Jen, Ming Hwa, Che Kai Chang, Yi Chun Sung, and Feng Chi Hsu. "Manufacturing and Mechanical Responses of Ti/APC-2 Nanocomposite Cross-Ply and Quasi-Isotropic Laminates at Elevated Temperature." Advanced Materials Research 150-151 (October 2010): 796–99. http://dx.doi.org/10.4028/www.scientific.net/amr.150-151.796.

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Both Ti/APC-2 cross-ply and quasi-isotropic nanocomposite laminates were successfully fabricated. Basically, the tensile tests at elevated temperature were conducted to obtain the baseline data of mechanical properties, such as strength and stiffness. The results for both types of laminates of longitudinal stiffness predicted by the rule of mixtures (ROM) were in good agreement with experimental data, whilst, those ultimate strength predicted by ROM were lower than the measured data. Then, the tension-tension (T-T) constant stress amplitude cyclic tests were performed at elevated temperature t

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38

Fossum, A. F., P. T. Vianco, M. K. Neilsen, and D. M. Pierce. "A Practical Viscoplastic Damage Model for Lead-Free Solder." Journal of Electronic Packaging 128, no. 1 (2005): 71–81. http://dx.doi.org/10.1115/1.2160514.

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This paper summarizes the results of a program to construct an internal variable viscoplastic damage model to characterize 95.5Sn–3.9Ag–0.6Cu (wt.%) lead-free solder under cyclic thermomechanical loading conditions. A unified model is enhanced to account for a deteriorating microstructure through the use of an isotropic damage evolution equation. Model predictions versus experimental data are given for constant strain-rate tests that were conducted at strain rates of 4.2×10−5s−1 and 8.3×10−4s−1 over a temperature range from −25°Cto160°C; cyclic shear tests; and elevated-temperature creep tests

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39

Šulák, Ivo, Karel Obrtlík, and Ladislav Čelko. "Comparative Study of Microstructure and High Temperature Low Cycle Fatigue Behaviour of Nickel Base Superalloys Inconel 713LC and MAR-M247." Key Engineering Materials 713 (September 2016): 86–89. http://dx.doi.org/10.4028/www.scientific.net/kem.713.86.

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The present work is focused on the study of microstructure and low cycle fatigue behavior of the first generation nickel-base superalloy IN 713LC (low carbon) and its promising second generation successor MAR-M247 HIP (hot isostatic pressing) at 900 °C. Microstructure of both alloys was studied by means of scanning electron microscopy (SEM). The microstructure of both materials is characterized by dendritic grains, carbides and casting defects. Size and morphology of precipitates and casting defects were evaluated. Fractographic observations have been made with the aim to reveal the fatigue cr

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40

Seensattayawong, Phanuphak, and Eberhard Kerscher. "The Evolution of Surfaces on Medium-Carbon Steel for Fatigue Life Estimations." Coatings 14, no. 8 (2024): 1077. http://dx.doi.org/10.3390/coatings14081077.

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Early in fatigue life, fatigue cracks are often initiated at persistent slip bands (PSBs), which play the main role in surface evolution when the components are subjected to cyclic loading. Therefore, this paper aims to study the behavior of the surface development of medium-carbon steel, specifically 42CrMo4 (SAE 4140). Tests were conducted using tension–compression fatigue testing with stress amplitudes set at 30%, 40%, and 50% of the ultimate tensile strength (UTS); a load ratio of R = −1; and a frequency of f = 10 Hz. The ultimate number of test cycles was 2 × 105. The fatigue test specime

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41

Gladskyi, Maksym, Kateryna Barandych, Volodymyr Frolov, and Serhii Yurenko. "INFLUENCE OF STRESS CONCENTRATION ON STEEL DEFORMATION 20 UNDER CYCLIC LOADS." Technical Sciences and Technologies, no. 1(27) (2022): 60–66. http://dx.doi.org/10.25140/2411-5363-2022-1(27)-60-66.

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The effect of stress concentration on fatigue behavior of steel 20 is studied. Experimental study is carried out on tubular smooth and notched specimens under uniaxial cyclic loading and alternating torsion. Load and strain controlled fatigue tests were carried out at room temperature using servohydraulic machine with independent control of push-pull and torsion loads with frequency of 0.5-3 Hz. One basic geometry for two different types of specimens shown in Figure 1 with 1.1 mm wall thickness, 22 mm inside diameter, and 40 mm gauge length was used in this work. One type was a tubular smooth

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42

Zhao, Jiajing, Zhehao Zhu, Jiaquan Liu, and Huaqiao Zhong. "Damping Ratio of Sand Containing Fine Particles in Cyclic Triaxial Liquefaction Tests." Applied Sciences 13, no. 8 (2023): 4833. http://dx.doi.org/10.3390/app13084833.

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Sand liquefaction triggered by earthquakes is a devastating geological disaster and has emerged as an engaging topic in earthquake engineering. With an enhanced understanding of pure sand liquefaction promoted by laboratory research, there is a growing concern, following filed investigations, over the influence of fine particles on the liquefaction potential of sand containing inclusions. Efforts have been devoted to clarifying the significance of certain physical indicators (e.g., plasticity index, particle shape and gradation characteristics), and fruitful conclusions can be found in the pub

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43

Law, K. T., Y. L. Cao, and G. N. He. "An energy approach for assessing seismic liquefaction potential." Canadian Geotechnical Journal 27, no. 3 (1990): 320–29. http://dx.doi.org/10.1139/t90-043.

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An energy method for assessing liquefaction potential of granular soils was developed based on laboratory tests and observational data obtained in past major earthquakes. Cyclic triaxial and cyclic simple shear tests were conducted and the results show that a unique relation exists between the dissipated energy during cyclic load and the excess pore pressure that eventually led to liquefaction failure. This unique relation has been combined with an energy attenuation equation to develop a criterion for defining the liquefaction potential of a site. Parameters for the criterion were evaluated f

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44

Wang, Yuanqing, and Zhongxing Wang. "Experimental Investigation and FE Analysis on Constitutive Relationship of High Strength Aluminum Alloy under Cyclic Loading." Advances in Materials Science and Engineering 2016 (2016): 1–16. http://dx.doi.org/10.1155/2016/2941874.

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Experiments of 17 high strength aluminum alloy (7A04) specimens were conducted to investigate the constitutive relationship under cyclic loading. The monotonic behavior and hysteretic behavior were focused on and the fracture surface was observed by scanning electron microscope (SEM) to investigate the microfailure modes. Based on Ramberg-Osgood model, stress-strain skeleton curves under cyclic loading were fitted. Parameters of combined hardening model including isotropic hardening and kinematic hardening were calibrated from test data according to Chaboche model. The cyclic tests were simula

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45

Wisnewski, Joachim, and Richard Stroetmann. "Experimental determination of the fatigue behavior of dowel strips in ortho‐composite slabs for road bridges." ce/papers 6, no. 3-4 (2023): 130–35. http://dx.doi.org/10.1002/cepa.2538.

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AbstractIn contrast to reinforced concrete and conventional composite bridges, the orthotropic steel deck slab offers a high load‐bearing capacity combined with a low dead weight. It is therefore ideally suited for slender and long‐span structures. However, the notch sharpness in the details and drastically increased traffic loads led to extensive fatigue damage and, as a consequence, often to premature repair or replacement work. With the ortho‐composite slab a lightweight and robust construction is currently being developed as an alternative. It combines the significant advantages of a low d

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46

Jeong, Yoseok, WooSeok Kim, Viktor Gribniak, and David Hui. "Fatigue Behavior of Concrete Beams Prestressed with Partially Bonded CFRP Bars Subjected to Cyclic Loads." Materials 12, no. 20 (2019): 3352. http://dx.doi.org/10.3390/ma12203352.

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The lack of ductility is the greatest concern in the applications of carbon fiber reinforced polymer (CFRP) materials, when used as pre-stressing reinforcements. To improve the ductility, a partially bonded FRP system which is intentionally unbonded in the middle part of the beam and bonded in both end parts of the beam has been developed and applied to prestressed concrete beams. While, many researchers investigated the instantaneous performance of partially bonded CFRP prestressed concrete beams, this study intended to evaluate the fatigue performance, the static load-carrying capacity after

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47

Cai, Hongda, Stevens Marion A. Kalceff, Bryan M. Hooks, Brian R. Lawn, and Kenneth Chyung. "Cyclic fatigue of a mica-containing glass-ceramic at Hertzian contacts." Journal of Materials Research 9, no. 10 (1994): 2654–61. http://dx.doi.org/10.1557/jmr.1994.2654.

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Fatigue damage in a mica-containing glass-ceramic is examined using Hertzian contact tests. For the material in its base glass state, such tests indicate that fatigue occurs solely by chemically enhanced cone crack extension. In the glass-ceramic, fatigue is evident as an expansion of a macroscopic subsurface microfracture zone. Comparative observations of the subsurface damage in static and cyclic loading, and tests in different environments, indicate that the fatigue in the glass-ceramic is mechanical in origin, although it is enhanced by moisture. This result is reinforced by load-point-dis

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48

Vaško, Alan, and Marek Krynke. "Fatigue Properties Of Nodular Cast Irons Alloyed By Si, Mo And Cu." System Safety: Human - Technical Facility - Environment 1, no. 1 (2019): 738–44. http://dx.doi.org/10.2478/czoto-2019-0094.

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AbstractIn recent years, the research of nodular cast iron has been focused on increasing fatigue resistence. In the paper, two types of alloyed nodular cast irons have been investigated – SiMo-nodular cast iron alloyed by 4% of silicon and 1% of molybdenum and SiCu-nodular cast iron alloyed by 4% of silicon and 1.5% of copper. SiMo-nodular cast iron is suitable for high-temperature applications, for example the exhaust manifolds of the combustion engines. SiCu-nodular cast iron is used in various components of tribotechnical units. These components are often loaded by fatigue. The mechanical

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49

Hasebe, Tadashi, Masao Sakane, and Masateru Ohnami. "High Temperature Low Cycle Fatigue and Cyclic Constitutive Relation of MAR-M247 Directionally Solidified Superalloy." Journal of Engineering Materials and Technology 114, no. 2 (1992): 162–67. http://dx.doi.org/10.1115/1.2904156.

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This paper investigates the effect of solidification direction on cyclic constitutive relation and low cycle fatigue life for a directionally solidified (DS) superalloy Mar-M247LC at 1173 K in air. Strain controlled push-pull low cycle fatigue tests were carried out for three kinds of specimens of which loading direction was 0, 45 and 90 deg to DS axis. The 0 deg specimen exhibited the largest fatigue strength, the 45 deg specimen the smallest and the 90 deg specimen the intermediate. The difference in the fatigue strength due to the loading direction was discussed in detail from the viewpoint

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50

Rotsch, Christian, Karoline Kemter-Esser, Johanna Dohndorf, Marcel Knothe, Welf-Guntram Drossel, and Christoph-Eckhard Heyde. "Feasibility of a Shape-Memory-Alloy-Actuator System for Modular Acetabular Cups." Bioengineering 11, no. 1 (2024): 75. http://dx.doi.org/10.3390/bioengineering11010075.

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Hip implants have a modular structure which enables patient-specific adaptation but also revision of worn or damaged friction partners without compromising the implant-bone connection. To reduce complications during the extraction of ceramic inlays, this work presents a new approach of a shape-memory-alloy-actuator which enables the loosening of ceramic inlays from acetabular hip cups without ceramic chipping or damaging the metal cup. This technical in vitro study exam-ines two principles of heating currents and hot water for thermal activation of the shape-memory-alloy-actuator to generate a

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