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Journal articles on the topic 'Creep'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Williams, M., D. Menon, and A. M. Prasad. "Flexural creep in plain concrete: State of the Art." Proceedings of the 12th Structural Engineering Convention, SEC 2022: Themes 1-2 1, no. 1 (2022): 341–45. http://dx.doi.org/10.38208/acp.v1.519.

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Concrete, being a viscoelastic material, creeps with time causing additional strains and deflections in flexural members. Most of the studies in creep of concrete are based on long-term tests on plain concrete standard cylinders under axial compression, very limited studies have been reported on creep of concrete in flexure and direct tension. Whether the mechanism of creep in tension is different from creep in compression is still being debated. Numerous studies have been reported in the literature showing varied results with regard to the effects of creep in direct compression, direct tensio

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2

Widjaja, Sujanto, Karl Jakus, Revti Atri, John E. Ritter, and Sandeepan Bhattacharya. "Residual surface stress by localized contact-creep." Journal of Materials Research 12, no. 1 (1997): 210–17. http://dx.doi.org/10.1557/jmr.1997.0028.

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When a ceramic material creeps under a localized stress and then cools under load, a portion of the creep flow stress is retained as a residual compressive stress due to elastic rebound being constrained by the creep zone. Localized contact-creep was used to generate residual compressive surface stress in soda-lime glass and two sintered aluminas. The Vickers indentation technique was used to measure the residual stress within the contact-creep area. Alumina with a higher elastic modulus than glass retained higher residual compressive surface stress. The results were in reasonable agreement wi

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3

Menaya, Carmen M., P. R. English, S. A. Edwards, et al. "Evaluation of a simple adaptation to a farrowing pen designed to increase the comfort level of piglets in the narrow creep in the first 48 hours of life." Proceedings of the British Society of Animal Production (1972) 1991 (March 1991): 62. http://dx.doi.org/10.1017/s0308229600020122.

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In commercial farrowing pens, creep areas for the piglets are often provided only at the front or on one side of the pen. Because of the strong bonding which newborn piglets have to the udder, such arrangements are often inadequate to attract piglets into the creep area where danger from hypothermia increase the suitability for the newborn piglet of farrowing pens with a typical commercial side creep design.The experiment was carried out in a commercial farrowing house with partially slatted, unbedded pens. These pens were of typical commercial ‘side creep’ design with a wide creep area on one

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4

Dan, Zhenhua, Jiafei Lu, Hui Chang, et al. "High-Stress Compressive Creep Behavior of Ti-6Al-4V ELI Alloys with Different Microstructures." MATEC Web of Conferences 321 (2020): 11007. http://dx.doi.org/10.1051/matecconf/202032111007.

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Influence of initial microstructure of Ti-6Al-4V ELI alloys on their compressive creep behavior at ambient temperature was investigated with applying compression stresses from 695 to 1092 MPa The experimental results show that the basketweave alloys have better compressive creep resistances than those duplex ones. The constitutive equations in steady-state compressive creeps of duplex or basketweave structure are calculated to be =2.77×10-15(σ-710)2.1 and =2.36×10-14(σ-740)1.7 by fitting the linear regression creep curves after uniaxial compression tests. The noticeable compressive creep strai

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5

Lv, Yaru, Feng Li, Yawen Liu, Pengxian Fan, and Mingyang Wang. "Comparative study of coral sand and silica sand in creep under general stress states." Canadian Geotechnical Journal 54, no. 11 (2017): 1601–11. http://dx.doi.org/10.1139/cgj-2016-0295.

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Coral sand has individual characteristics that differ from silica sand, such as creep behavior that is always attributed to particle crushing under high stress states. To understand the creep behavior of coral sand under general stress levels, three series of comparative triaxial tests relevant to the deviator stress, confining pressure, and relative density were performed on coral sand and silica sand creeping for more than 5 days. The volumetric, axial, and shear creeps of coral sand are considerably larger than those of silica sand, particularly under a relatively high confining pressure. T

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6

Takahashi, Chika, Yutaka Ishimaru, Ikuho Iida, and Yuzo Furuta. "The creep of wood destabilized by change in moisture content. Part 2: The creep behaviors of wood during and immediately after adsorption." Holzforschung 59, no. 1 (2005): 46–53. http://dx.doi.org/10.1515/hf.2005.008.

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Abstract The fluidity of wood remarkably increases during moisture changes. This phenomenon is termed mechano-sorptive creep. The mechanism of mechano-sorptive creep has been studied, including a previous report by our group. Here, creep tests in bending were carried out for wood during and immediately after adsorption of moisture and after a long moisture conditioning. The effects of the rate of moisture adsorption on creep were also examined. The results and conclusions are as follows: (I) Greater creep occurred immediately after the adsorption process as compared with that after a long mois

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7

LIU, JI-HONG, XIANG-QI MENG, and JIN-QUAN XU. "CREEP CONSTITUTIVE RELATIONSHIPS AND CYCLIC BEHAVIORS OF Sn96.5Ag3Cu0.5 UNDER HIGH TEMPERATURES." International Journal of Modern Physics B 22, no. 31n32 (2008): 5438–44. http://dx.doi.org/10.1142/s0217979208050620.

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As a lead-free solder, Sn 96.5 Ag 3 Cu 0.5 has a wide application in electronic packaging. Since the solder materials usually work under cyclic temperature surroundings, creep constitutive relationships and cyclic behaviors are necessary to carry out the thermal stress analysis of a package with such a solder for its strength and life evaluations. This paper has investigated the creep constitutive relationships by constant (non-cyclic) loadings firstly, based on the creep test results at various stress and temperature levels. The complete form of the constitutive relationship containing both t

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8

Constantinescu, Dan Mihai, Radu Catalin Picu, Marin Sandu, Dragos Alexandru Apostol, Adriana Sandu, and Florin Baciu. "Behaviour of Epoxy Silica Nanocomposites Under Static and Creep Loading." ACTA Universitatis Cibiniensis 69, no. 1 (2017): 1–8. http://dx.doi.org/10.1515/aucts-2017-0001.

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Abstract Specific manufacturing technologies were applied for the fabrication of epoxy-based nanocomposites with silica nanoparticles. For dispersing the fillers in the epoxy resin special equipment such as a shear mixer and a high energy sonicator with temperature control were used. Both functionalized and unfunctionalized silica nanoparticles were added in three epoxy resins. The considered filling fraction was in most cases 0.1, 0.3 and 0.5 wt%.. The obtained nanocomposites were subjected to monotonic uniaxial and creep loading at room temperature. The static mechanical properties were not

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9

Jones, David. "Creep and anti-creep." Nature 400, no. 6740 (1999): 121. http://dx.doi.org/10.1038/22017.

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10

Innes, Martin. "Control Creep." Sociological Research Online 6, no. 3 (2001): 13–18. http://dx.doi.org/10.5153/sro.634.

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Reacting to the attacks on September 11th and subsequently, governments in both the USA and UK have identified a need to enhance the social control apparatus in order to protect citizens from forms of ‘asymmetric warfare’ conducted by terrorist groups. These attempts to reform the provision of security and control cannot be understood in isolation. They are connected to a deeply entrenched process of ‘control creep’, whereby the social control apparatus progressively expands and penetrates (or ‘creeps’) into different social arenas, in response to a set of inchoate fears about a sense of secur

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11

Gorman, Susanna M. "Ethics Creep or Governance Creep?" Monash Bioethics Review 29, no. 4 (2011): 23–38. http://dx.doi.org/10.1007/bf03351328.

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12

Hirano, Akihiko, Masao Sakane, and Naomi Hamada. "OS18-1-1 Determination of Creep Exponent and Coefficient by Indentation Creep." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2007.6 (2007): _OS18–1–1——_OS18–1–1—. http://dx.doi.org/10.1299/jsmeatem.2007.6._os18-1-1-.

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13

Gupta, C., Hiroyuki Toda, C. Schlacher, et al. "Study of Creep Damage in a 10.86% Cr Heat Resistant Steel using Synchrotron X-Ray Microtomography." Advanced Materials Research 794 (September 2013): 476–83. http://dx.doi.org/10.4028/www.scientific.net/amr.794.476.

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Synchrotron X-ray microtomography(SR-μCT) scans have been carried out on sample coupons extracted from the fracture specimens of a 10.86% Cr heat resistant steel exposed to crep deformation at 873K over stresses of 120, 150, and 180 MPa. The 3D cavitation characteristics in terms of void volume fraction, numbwer density and size distribution as a function of the applied stress has been determined by quantitative analysis of the reconstructed tomograohy slice datasets. The relationship between heterogenous spatial distribution of creep voids and variation in rupture life has been exploited in t

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14

Liu, Xiaolan, Yong Zheng, Jifei Cao, Yaohui Wang, Yongqian Ma, and Yantao Bi. "Study on the Influence of Gas Hydrate Reservoir Creep on Borehole Wall Deformation." Journal of Physics: Conference Series 2442, no. 1 (2023): 012035. http://dx.doi.org/10.1088/1742-6596/2442/1/012035.

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Abstract Hydrate decomposition caused by long-time drilling operations will reduce the strength of the reservoir and increase the risk of borehole wall damage. At the same time, the creep characteristics of the hydrate reservoir may also lead to engineering problems such as borehole shrinkage and sticking in the later stage of drilling, which seriously affects the drilling safety. The creep parameters are introduced to explore the influence mechanism of hydrate decomposition, and hydrate-bearing sediment creeps characteristics on wellbore mechanical behavior. The influence law of sediment shal

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15

Saxena, Ashok. "Creep and creep–fatigue crack growth." International Journal of Fracture 191, no. 1-2 (2015): 31–51. http://dx.doi.org/10.1007/s10704-015-9994-4.

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16

Liu, Caimei, Xizhi Wu, Xiubo Liu, and Xianjun Li. "Creep Performance and Life Prediction of Bamboo Scrimber under Long-Term Tension in Parallel-to-Grain." Forests 14, no. 10 (2023): 1971. http://dx.doi.org/10.3390/f14101971.

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Creep performance is a crucial factor that must be considered in structural design. This paper aims to investigate the creep failure mode, creep strain, creep compliance, and other creep properties of bamboo scrimber under long-term tension in parallel-to-grain. To establish a general creep life prediction method for the full stress level of the bamboo scrimber, a multi-branch Kelvin–Voigt model, a generalized Maxwell model, and a creep finite element simulation were employed. The results showed that the creep strain curve of bamboo scrimber included the unsteady creep stage and the stable cre

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17

Wang, Ruihong, Yuzhou Jiang, Chao Yang, Fei Huang, and Yuxuan Wang. "A Nonlinear Creep Damage Model of Layered Rock under Unloading Condition." Mathematical Problems in Engineering 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/8294390.

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Triaxial unloading creep tests of layered rock specimen of Jinping II hydropower station were carried out using the rock creep testing machine; thus the creep deformation curves under different confining pressures were acquired. The test results showed that, in addition to the obvious unloading creep characteristics of rock specimen, the nonlinear accelerating creep deformation emerged under the last stage confining stress condition, and the whole creep curves presented the typical rock creep three stages. On the other hand, the Burgers creep model constitutive equations under the three-dimens

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18

Ellebrecht, Nils, and Dominik Weber. "Verbotener function creep." Kriminologisches Journal, no. 2 (June 2, 2021): 86–104. http://dx.doi.org/10.3262/kj2102086.

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Forensische Bestimmungen der biogeographischen Herkunft eines/einer unbekannten Verdächtigen anhand von DNA-Spuren sind in Deutschland nicht erlaubt, kommen aber bereits zur Anwendung. Dieser function creep ist nur zum Teil durch rechtliche Sonderregelungen und Graubereiche gedeckt. Dieser Artikel zeigt, dass die Herkunft eines/einer Verdächtigen bereits beim DNA-Profilabgleich eine Rolle spielt. Von hier aus reift die Herkunftsanalyse zu einem eigenständigen Verfahren heran, dessen verbotener Einsatz durch drei Entwicklungen gefördert wird. (1) In den Laboren werden Herkunftsinformationen im

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19

Li, Yong, Zhusheng Shi, Yo Lun Yang, and Jian Guo Lin. "Investigation of Tensile and Compressive Creep Behaviour of AA2050-T34 during Creep Age Forming Process." Key Engineering Materials 716 (October 2016): 323–30. http://dx.doi.org/10.4028/www.scientific.net/kem.716.323.

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The tensile and compressive creep behaviour of aluminium alloy 2050 with T34 initial temper (AA2050-T34) during creep-ageing process has been experimentally investigated and analysed in detail. Both tensile and compressive creep-ageing tests under various stress levels (ranging from 100 MPa to 187.5 MPa) have been carried out at a temperature of 155 °C for 18 hours. The results show that creep strains under tensile stresses are much larger than those under the same levels of compressive stresses and a new “double primary creep feature” with five-stage creep behaviour has been observed in the a

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20

Zhang, Yifan, Tianxiang Sun, Mingze Qin, Dongxu Zhang, Nan Qin, and Yongyan Wang. "Effect of Time and Stress on Creep Damage Characteristics of Cement-Based Materials." Buildings 14, no. 12 (2024): 3745. http://dx.doi.org/10.3390/buildings14123745.

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In the realm of daily life, ensuring the safety of building structures and civil engineering projects remains a paramount research focus. The creep properties of materials significantly influence their long-term loading process. Specifically, creep load and creep time are pivotal factors that impact material creep damage, thereby playing a crucial role in assessing the safety of engineering endeavors and estimating aspects such as housing construction. This study undertakes creep damage tests on cement-based materials, subjecting them to varying creep loads and creep times, and subsequently co

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21

Langdon, Terence G. "Creep at low stresses: An evaluation of diffusion creep and Harper-Dorn creep as viable creep mechanisms." Metallurgical and Materials Transactions A 33, no. 2 (2002): 249–59. http://dx.doi.org/10.1007/s11661-002-0087-4.

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22

Zhang, Jie, Qiuhua Rao, and Wei Yi. "A New Creep–Fatigue Interaction Model for Predicting Deformation of Coarse-Grained Soil." Materials 15, no. 11 (2022): 3904. http://dx.doi.org/10.3390/ma15113904.

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Studying the creep–fatigue interaction of the coarse-grained soil (CGS) is very important for safety assessment and disaster prevention in subgrade engineering. Current research work is mainly focused on single creep or fatigue deformation. In this paper, a new creep–fatigue interaction model is established to predict the creep–fatigue interaction deformation of different gradation CGS based on the rheological mechanics and the interactive relationship between creep and fatigue complex compliance method. Triaxial creep–fatigue interaction tests of different gradations CGS under different avera

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23

Shao, Yawu, Yonglu Suo, Jiang Xiao, Yuan Bai, and Tao Yang. "Creep Characteristic Test and Creep Model of Frozen Soil." Sustainability 15, no. 5 (2023): 3984. http://dx.doi.org/10.3390/su15053984.

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In order to research the creep deformation characteristics of frozen soil and the effect of various influencing factors on creep, indoor uniaxial creep tests were carried out on frozen soil specimens at temperatures of −5, −4, −3 and −2 °C under loads of 0.25, 0.5, and 0.75 σt, respectively. The creep deformation characteristics of frozen soil under different temperatures and load conditions are analyzed under unconfined conditions. The results show that under the uniaxial creep test conditions, when the load is low, there is no accelerated creep stage in the creep curve, which belongs to the

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24

Park, Yeong-Seong, Yong-Hak Lee, and Youngwhan Lee. "Description of Concrete Creep under Time-Varying Stress Using Parallel Creep Curve." Advances in Materials Science and Engineering 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/9370514.

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An incremental format of creep model was presented to take account of the development of concrete creep due to loading at different ages. The formulation was attained by introducing a horizontal parallel assumption of creep curves and combining it with the vertical parallel creep curve of the rate of creep method to remedy the disadvantage of the rate of creep method that significantly underestimates the amount of creep strain, regardless of its simple format. Two creep curves were combined by introducing an ageing parameter whose value was obtained from two sets of time-dependent laboratory e

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25

Sato, Hiroyuki, Kosuke Omote, and Akira Sato. "Extrapolation of Creep Curve and Creep Rate by Strain Acceleration Parameter in Al-Mg Solid Solution Alloys." Materials Science Forum 794-796 (June 2014): 307–12. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.307.

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It has been widely accepted that the creep characteristics at high temperatures are mainly evaluated by a minimum creep rate. Although, a shape of creep curve may vary depending on deformation conditions, the apparent steady state or minimum creep rates be the same. Thus,for detailed analysis and prediction of creep behavior, other values which reflect the shape of each creep curve should be considered. For the purpose, authors have proposed Sato’s strain- acceleration-parameter (Strain Acceleration and Transition Objective index, SATO-index) which reflects strain rate change during creep defo

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Fish, Anatoly M. "Shape of creep curves in frozen soils and polycrystalline ice." Canadian Geotechnical Journal 24, no. 4 (1987): 623–29. http://dx.doi.org/10.1139/t87-076.

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A new method was developed for determining creep parameters, particularly the time to failure, from a single linear plot in which an individual creep curve forms a straight line for primary and tertiary creep. Secondary creep is considered to be a principal point on this line that predetermines the onset of failure. The times to failure can be predicted even when creep tests are not complete by extrapolating information obtained for primary creep. Based upon T. H. Jacka's test data, prediction of creep strain was evaluated using the constitutive equation of A. M. Fish for entire creep and comp

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27

Kim, Seung-Gyu, Yeong-Seong Park, and Yong-Hak Lee. "Comparison of Concrete Creep in Compression, Tension, and Bending under Drying Condition." Materials 12, no. 20 (2019): 3357. http://dx.doi.org/10.3390/ma12203357.

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Three types of creep experiments of compression, tension, and bending were implemented to identify quantitative relations among the three types of creep under drying atmospheric conditions. In case of the bending creep experiment, two types of unreinforced concrete beams with similar dimensions were cast for use in the beam creep and shrinkage tests. The variations in the shrinkage strain within the beam depth were measured to evaluate the effect of the shrinkage variations on the bending creep strain. The beam creep strain measured within the beam depth was composed of uniform and skewed part

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Fu, Jianghua, Yang Liu, Jintao Su, Bao Chen, and Zheming Chen. "Rubber Creep Model and Its Influence on Mounting Stiffness." Applied Sciences 12, no. 24 (2022): 12764. http://dx.doi.org/10.3390/app122412764.

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The mount of the engine will creep under the action of long-term load. Creep will change its original structure, resulting in changes in static and dynamic characteristics and fatigue life. In order to solve the problem of mounting rubber creep, the creep characteristics were studied in this paper. In order to study the influence of creep characteristics on engine mounting stiffness, a theoretical model of mount creep was established based on the creep mechanism of rubber. The effects of different loads on the creep characteristics of engine mount were studied. The static viscoelastic paramete

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29

Sato, Hiroyuki. "Extrapolation of Imaginal Minimum Creep Rate in Compression by a Concept of SATO-Index." Key Engineering Materials 741 (June 2017): 99–104. http://dx.doi.org/10.4028/www.scientific.net/kem.741.99.

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Creep characteristics of alloys and compounds have been evaluated mainly by the minimum creep rate or the steady-state creep rate, and by its stress and temperature dependences. In some cases, however, direct comparison of the minimum creep rate or the steady-state creep rate are not practically easy due to difficulties of experiment, i.e., a long duration of primary stage of creep deformation. The minimum creep rates are not always precise representative value, which is directly evaluated from experiments. It should be valuable, if one could estimate the minimum creep rate from creep curve in

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30

Zhao, Baoyun, Wei Huang, Zhile Shu, Mengmeng Han, and Yanbo Feng. "Experimental and Theoretical Studies on the Creep Behavior of Bayer Red Mud." Advances in Civil Engineering 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/6327971.

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Long-term stability and safety of the Bayer red mud (BRM) disposal field is very important for the local residents’ life, which necessitates the knowledge of its creep behavior. In order to investigate the creep behavior of BRM, a series of triaxial drained creep tests were conducted by using an improved triaxial creep apparatus. The results indicate that the creep behavior of BRM is significant with confining and deviatoric stresses being critical factors. The creep strain is in a nonlinear relationship with stress and time, and a larger deviator stress will lead to a larger creep strain. The

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31

Xiu, Xia, Yong Wang, Ye Zhou, Geng Niu, Shijun Zhao, and Degong Chang. "Creep Model and Experimental Verification of Sandstone under the Coupled Effect of Chemical Corrosion and Temperature." Applied Sciences 14, no. 17 (2024): 7847. http://dx.doi.org/10.3390/app14177847.

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The Nishihara creep model is an extremely effective method in the field of sandstone creep model research. However, the Nishihara creep model curve for sandstone under the marine environment (the coupled effect of chemical corrosion and temperature) does not fit the actual creep test data well. Based on the Nishihara creep model, we discovered that, on the one hand, the viscoelastic elements in the Nishihara model are replaced by the viscoelastic elements containing temperature and pH factors, which can accurately describe the influence of temperature and pH on rock creep characteristics; on t

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Li, Yuemei. "Creep constitutive model of strain energy density considering the whole process of creep deformation." PLOS One 20, no. 7 (2025): e0326599. https://doi.org/10.1371/journal.pone.0326599.

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Aiming at the problem that the traditional creep model is difficult to reflect the characteristics of accelerated creep stage of rock, the influence of stress state on accelerated creep is fully considered, and a constitutive model which can describe viscoplastic creep is established based on strain energy density function. In order to comprehensively improve the accurate description of the three stages of rock creep, based on the traditional Nishihara model, an improved creep model is proposed by connecting a nonlinear viscoplastic element in series. The continuous medium strain energy theory

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Saucedo-Muñoz, Maribel L., Shin-Ichi Komazaki, Toru Takahashi, Toshiyuki Hashida, and Tetsuo Shoji. "Creep property measurement of service-exposed SUS 316 austenitic stainless steel by the small-punch creep-testing technique." Journal of Materials Research 17, no. 8 (2002): 1945–53. http://dx.doi.org/10.1557/jmr.2002.0288.

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The creep properties for SUS 316 HTB austenitic stainless steel were evaluated by using the small-punch creep test at 650 °C for loads of 234, 286, 338, 408, and 478 N and at 700 °C for loads of 199 and 234 N. The creep curves, determined by means of the small-punch creep test, were similar to those obtained from a conventional uniaxial creep test. That is, they exhibited clearly the three creep stages. The width of secondary creep stage and rupture time tr decreased with the increase in testing load level. The creep rupture strength for the service-exposed material was lower than that of the

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34

Zheng, Jing-Hua, Yufeng Jin, Lang Xu, Congze Fan, Wenzhe Song, and Yiwei Chen. "Comparative Study of Creep and Stress Relaxation Behaviour during Ageing of 7050 Aluminum Alloy." Metals 13, no. 4 (2023): 778. http://dx.doi.org/10.3390/met13040778.

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This work focuses on quantitatively investigating the relationship between creep and stress relaxation of 7050 aluminum alloy at ageing temperatures. The creep strain rates, creep exponent, n, and activation energy were extracted from both the creep and stress relaxation curves to explore the creep mechanisms. Results showed that higher applied stress promotes the creep and stress relaxation extents. The calculated creep strain rates from creep and stress relaxation curves located in similar ranges and share similar n values (n = 3.7 for creep and n = 3.5 for stress relaxation), indicating tha

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Sato, Hiroyuki, Kosuke Omote, Akira Sato, and Kouki Ueno. "Extrapolation of Sigmoidal Creep Curve by Strain Acceleration Parameter." Key Engineering Materials 592-593 (November 2013): 606–9. http://dx.doi.org/10.4028/www.scientific.net/kem.592-593.606.

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It has been widely accepted that the creep characteristics at high temperatures are mainly evaluated by a minimum creep rate and a time to fracture. Although, a shape of creep curve may vary depending on deformation conditions, the apparent minimum creep rates may become the same value. Thus, for detailed analysis and prediction of creep behavior, other values should be considered which reflects the shape of each creep curve. For the purpose, authors have proposed Satos Strain-Acceleration-Parameter (SAP) which reflects strain rate change during creep. Based on the concept of SAP, the whole cr

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36

Meraj, Md, and Snehanshu Pal. "An Anomaly in Creep Property Dependence on Grain Size for Ultrafine Grain Nanocrystalline Nickel at Higher Creep Temperature." Materials Science Forum 978 (February 2020): 477–86. http://dx.doi.org/10.4028/www.scientific.net/msf.978.477.

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In this present study, molecular dynamics simulation of creep for ultrafine grain NC Ni specimens with different grain sizes have been carried out under a constant 1 GPa applied load for various creep temperatures to study the dependence of grain growth on creep temperature and grain size during creep process and its influence on creep properties. It is observed that the extent of grain growth in ultrafine grain NC Ni during creep deformation process is more if creep in creep temperature is higher. A noteworthy anomaly, that is NC Ni with smaller grain exhibits better creep property compared t

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Pan, Jingping, Shuheng Tu, Xinwei Zhu, and Lianjiang Tan. "Creep behavior and cavitation evolution of 15CrMoG steel at high temperatures." Advances in Mechanical Engineering 11, no. 8 (2019): 168781401986566. http://dx.doi.org/10.1177/1687814019865669.

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15CrMoG steel is a type of heat-resistant steel frequently used in boiler and piping systems. Creep properties of the 15CrMoG steel at service temperatures are not much documented due to the difficulties in obtaining long-term creep data. Herein, the creep behavior and the cavity evolution of 15CrMoG steel were investigated based on 20,000 h of creep tests at varied temperatures. Creep curves were analyzed to elucidate the creep behavior and creep rupture mechanism of the 15CrMoG steel. A continuum damage model was adopted to fit the rupture stress versus creep time data, and the results showe

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38

Ren, Fa Cai, Xiao Ying Tang, and Jun Si. "Investigation on Creep Properties of Welded Joint of Modified 9Cr-1Mo Martensitic Heat-Resistant Steel." Key Engineering Materials 795 (March 2019): 312–17. http://dx.doi.org/10.4028/www.scientific.net/kem.795.312.

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The creep rupture behavior of weld joint of modified 9Cr-1Mo martensitic heat-resistant steel is investigated by conducting creep tests. The creep strain-time curves of 838K under different stress levels are obtained. The effects of different stress conditions on the creep rupture lifetime are analyzed. Based on the creep test data, the relationship between minimum creep rate and stress, creep rupture time is analyzed. The test results show that the creep rupture occurred in the fine-grained heat-affected zone. The microstructure evolution during creep process is studied by metallographic anal

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Qiu, Y. Y., Z. Dong, X. L. Song, and Z. D. Xiang. "A new tensile creep model for predicting long-term creep strengths with short-term test data for creep resistant alloys." Journal of Physics: Conference Series 2680, no. 1 (2024): 012018. http://dx.doi.org/10.1088/1742-6596/2680/1/012018.

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Abstract The difficulties in using the conventional Norton creep model to rationalise short-term creep data and to subsequently predict long-term creep rupture strengths for creep resistant alloys are presented and analysed. The results of this study show that these difficulties can be resolved if a new tensile creep model that integrates the tensile strength at creep temperature is applied to rationalise the short-term creep data. This is illustrated with the creep and tensile strength data measured for a grade of Ni-based superalloy. Based on this new tensile creep model, the activation ener

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Fan, Pingyang, Junhua Chen, Chuankun Qiu, et al. "The Establishment of a Rock Creep Model by Using Creep Bodies via an Improved Gene Expression Programming Algorithm." Applied Sciences 15, no. 10 (2025): 5527. https://doi.org/10.3390/app15105527.

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Rock creep commonly appears in rock mass engineering, and it should be paid appropriate attention. In this paper, studies on creep constitutive models of rocks were reviewed, and it was found that the types of creep constitutive models can generally be classified into two categories: theoretical formulas and combinations of creep bodies. Moreover, the combination of creep bodies has been used mainly for describing the creep characteristics of rocks; however, creep constitutive models have been constructed based on the subjectivity of studies in most cases, which is not objective or scientific

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Kim, Woo Gon, Sang Nan Yin, Woo Seog Ryu, and Jong Hwa Chang. "Creep Properties of Hastelloy-X Alloy for the High Temperature Gas-Cooled Reactor." Key Engineering Materials 326-328 (December 2006): 1105–8. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1105.

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The creep properties for the Hastelloy-X alloy which is one of candidate alloys for a high temperature gas-cooled reactor are presented. The creep data was obtained with different stresses at 950oC, and a number of the creep data was collected through literature surveys. All of the creep data were combined together to obtain the creep constants and to predict a long-term creep life. In the Norton’s creep law and the Monkman-Grant relationship, the creep constants, A, n, m, and m’ were obtained. Creep master curves based on the Larson-Miller parameter were presented for the standard deviations

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Ekaputra, I. M. W., and Gunawan Dwi Haryadi. "Karakteristik Laju Regangan Melar pada Baja Tahan Karat Austenitic 316L." ROTASI 19, no. 4 (2017): 201. http://dx.doi.org/10.14710/rotasi.19.4.201-205.

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In this study, the creep strain rate characteristics of austenitic 316L stainless steel was investigated from the uniaxial creep-rupture test. The tests were conducted under various applied load levels with a constant temperature at 525oC. The creep exponent was obtained by applying a Norton’s law equation on a regression line of creep strain rate vs. stress curve. The steel clearly showed an instantaneous primary stage, following with the secondary and tertiary stages on the creep curve. It was found that the creep rupture time decreased systematically with an increase in the stress. The seco

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Shenoi, R. A., H. G. Allen, and S. D. Clark. "Cyclic creep and creep-fatigue interaction in sandwich beams." Journal of Strain Analysis for Engineering Design 32, no. 1 (1997): 1–18. http://dx.doi.org/10.1243/0309324971513175.

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The main emphasis of this paper is to identify long-term effects such as creep and creep-fatigue interaction for a typical sandwich structure incorporating FRP (fibre-reinforced plastic) faces and a PVC (polyvinyl chloride) foam core. For the creep modelling a Bürger model and a power law model are investigated and compared with experimental results. Fatigue results pertaining to a cyclic trapezoidal waveform are presented in the context of the creep-fatigue interaction. A cyclic creep model is developed in order to investigate the effect of cyclic creep deformation on a response containing el

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Ishikawa, H. "Relation Between Cyclic Creep and Pure Creep on Copper." Journal of Engineering Materials and Technology 109, no. 3 (1987): 221–25. http://dx.doi.org/10.1115/1.3225967.

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The behavior of a pure copper subject to pure creep and cyclic creep under imposed load is examined at room temperature, and at 200°C, 300°C, and 400°C to show the relation between these two kinds of phenomena. Plots of observed strain, not against number of cycles, but against time are available for the direct comparison between cyclic creep and pure creep. This unified treatment shows that the instantaneous strain affects the succeeding mechanism of both pure creep and cyclic creep. As the result, these two kinds of phenomena are essentially identified, and pure creep could be regarded as th

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Maruyama, Kouichi. "Creep Deformation and Creep Strength of TiAl." Materia Japan 35, no. 10 (1996): 1070–76. http://dx.doi.org/10.2320/materia.35.1070.

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Wilshire, Brian, and H. Burt. "Creep and Creep Fracture of 7010-T7351." Materials Science Forum 396-402 (July 2002): 1309–14. http://dx.doi.org/10.4028/www.scientific.net/msf.396-402.1309.

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Haifanga, LI, and ZHANG Yinqi. "Creep Rate and Creep Model of Rockfill." Procedia Engineering 28 (2012): 796–802. http://dx.doi.org/10.1016/j.proeng.2012.01.812.

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Robinson, D. N., W. K. Binienda, and M. Miti‐Kavuma. "Creep and Creep Rupture of Metallic Composites." Journal of Engineering Mechanics 118, no. 8 (1992): 1646–60. http://dx.doi.org/10.1061/(asce)0733-9399(1992)118:8(1646).

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Wilshire, B., and A. J. Battenbough. "Creep and creep fracture of polycrystalline copper." Materials Science and Engineering: A 443, no. 1-2 (2007): 156–66. http://dx.doi.org/10.1016/j.msea.2006.08.094.

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Wright, J. K., T. M. Lillo, R. N. Wright, et al. "Creep and creep-rupture of Alloy 617." Nuclear Engineering and Design 329 (April 2018): 142–46. http://dx.doi.org/10.1016/j.nucengdes.2017.07.014.

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