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Journal articles on the topic 'Static and dynamic creep tests'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Mackiewicz, Piotr, and Antoni Szydło. "Viscoelastic Parameters of Asphalt Mixtures Identified in Static and Dynamic Tests." Materials 12, no. 13 (2019): 2084. http://dx.doi.org/10.3390/ma12132084.

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We present two methods used in the identification of viscoelastic parameters of asphalt mixtures used in pavements. The static creep test and the dynamic test, with a frequency of 10 Hz, were carried out based on the four-point bending beam (4BP). In the method identifying viscoelastic parameters for the Brugers’ model, we included the course of a creeping curve (for static creep) and fatigue hysteresis (for dynamic test). It was shown that these parameters depend significantly on the load time, method used, and temperature and asphalt content. A similar variation of parameters depending on te

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2

Li, Liding, Chunli Wu, Yongchun Cheng, Yongming Ai, He Li, and Xiaoshu Tan. "Comparative Analysis of Viscoelastic Properties of Open Graded Friction Course under Dynamic and Static Loads." Polymers 13, no. 8 (2021): 1250. http://dx.doi.org/10.3390/polym13081250.

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The viscoelastic properties of open graded friction course (OGFC) are closely related to anti-permanent deformation ability, noise reduction ability and durability. To study the viscoelastic parameters of OGFC under dynamic and static loads and to establish the functional relationship between them, uniaxial compression creep tests and dynamic modulus tests were performed to obtain the creep compliance and the dynamic modulus of OGFC. In addition, the Burgers model, modified Burgers model, second-order extensive Maxwell model, Scott-Blair model and modified Sigmoid model were employed to quanti

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3

Sun, Yi Han, Shao Peng Wu, Ji Qing Zhu, and Jin Jun Zhong. "Investigation on Static Shear Creep Behavior of Asphalt Mastic Containing Recycled Red Brick Powder." Advanced Materials Research 306-307 (August 2011): 1707–11. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1707.

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The static shear creep behavior of asphalt mastic containing recycled red brick powder (RBP) is investigated in this paper. The used mastic consists of asphalt and filler at a mass ratio of 1:1. Dynamic Shear Rheometer (DSR) performed the static shear creep tests at 0°C. The static shear creep behavior of RBP asphalt mastic was analyzed and modeled based on Burgers model. It is concluded that the introduction of RBP results in smaller deformation, higher static shear creep stiffness modulus of asphalt mastic at 0°C. It was also indicated that Burgers model can well explain the static shear cre

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4

Stelzer, D., and O. B. Andersland. "Creep Parameters for Pile Settlement Equations." Journal of Energy Resources Technology 111, no. 4 (1989): 258–63. http://dx.doi.org/10.1115/1.3231434.

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Friction pile settlement in frozen ground is tyically predicted on the basis of a creep equation relating shear stresses at the soil/pile interface to pile displacement rates. Creep parameters are used to characterize soil type, soil/ice structure, temperature, and loading conditions. Experimental tests involving model steel piles embedded in frozen sand provided data showing that change in a given test variable can alter the numerical value for some of the creep parameters. The test variables included static, incremental, and dynamic loading; pile surface roughness; soil ice content; and sand

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5

Khiavi, Alireza Khavandi, and Saeed Mansoori. "The performance of hot mix asphalt in dynamic and static creep tests." Petroleum Science and Technology 35, no. 15 (2017): 1627–34. http://dx.doi.org/10.1080/10916466.2017.1336773.

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6

Modigell, Michael, and M. Hufschmidt. "Dynamic and Static Yield Stress of Metallic Suspensions." Solid State Phenomena 116-117 (October 2006): 587–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.587.

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Oscillation experiments, creep tests and shear stress ramps have been performed to analyze the yield stress and its time dependency. It has to be distinguished between iso-structural, dynamic and static yield stress. The iso-structural yield stress occurs immediately after shearing. Since the slurry structure remains unchanged, it is equivalent to the structure during shearing. At rest an internal structure builds up, this leads to an increase of the yield stress, which is referred to as the dynamic yield stress. It increases until its maximum value, the static yield stress, is reached.

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7

Minhas, Zill-e. Hasnain, and Sun Qin. "Computation and Comparison of Dynamic Viscosity Based on Quasi-Static and Dynamic FEM Analysis for AL7050-T7451." Applied Mechanics and Materials 313-314 (March 2013): 1046–50. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.1046.

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Coefficients of dynamic viscosity for AL7050-T7451 at room temperature is extracted by creep and stress relaxation simulations in Ansys. An analogy has been established for both creep and stress relaxation, with simple Maxwell Model. The stress relaxation curve thus obtained is then used to generate the Prony series coefficients which are then used to run some dynamic analysis in Ansys to see the effect of loading at different frequencies on the value of η (i.e dynamic viscosity). This will be verified with the simple analytical dynamic formulation based on the Maxwell Model. A good agreement

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8

Irfan, M., Y. Ali, S. Iqbal, S. Ahmed, and I. Hafeez. "Rutting Evaluation of Asphalt Mixtures Using Static, Dynamic, and Repeated Creep Load Tests." Arabian Journal for Science and Engineering 43, no. 10 (2017): 5143–55. http://dx.doi.org/10.1007/s13369-017-2982-4.

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9

Li, Hui, Ying She Luo, Jian Jun Xie, and Sheng Ming Chen. "Research on Rheological Properties of Room-Temperature Curing Epoxy Adhesive." Advanced Materials Research 639-640 (January 2013): 354–58. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.354.

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The rheological mechanical properties of two kinds of self-designed epoxy adhesive curing systems were studied in this paper through the dynamic and static thermodynamics instrument named EPLEXOR 500N made by GABO® company in Germany. Short-term creep tests were carried out under three different temperature conditions of 20°C, 30°C and 40°C and the rheological model is developed to describe the materials creep law. In addition, the test results from the two different epoxy adhesive are also compared and analyzed.

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10

Bank, L. C., E. Cofie, and T. D. Gerhardt. "A New Test Method for the Determination of the Flexural Modulus of Spirally Wound Paper Tubes." Journal of Engineering Materials and Technology 114, no. 1 (1992): 84–89. http://dx.doi.org/10.1115/1.2904146.

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A new static test method to determine the flexural modulus of spirally wound paper tubes is described. The experimental method is based on the standard three-point-bend procedure. The method requires testing the tube at multiple (two or more) span lengths. The testing can be performed on either a rigid frame fixture under constant static load or in a universal testing machine under monotonically increasing quasi-static load. The test data are analyzed with a modified form of a classical Euler-Bernoulli beam theory. The modified theory accounts for nonbending deflection components that are obta

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11

Song, G., B. Conard, and S. K. R. Iyengar. "Damping Characterization Using Hysteresis on Static Nonrolling and Dynamic Rolling Behavior of Farm Tires4." Tire Science and Technology 36, no. 2 (2008): 108–28. http://dx.doi.org/10.2346/1.2917754.

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Abstract This paper presents the characterization of damping behavior as characterized by hysteresis for farm equipment tires and time domain numerical simulation of off-road tire rolling using finite element techniques. The hysteretic behavior is characterized by the load-displacement curves from static nonrolling vertical loading tests. Using a highly simplified finite element model based solely on tire catalog information and general constructional information, a hysteresis material model is used to simulate the hysteretic load-displacement behavior of farm tires. By choosing appropriate pa

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12

Gaska, Karolina, Georgia C. Manika, Thomas Gkourmpis, Davide Tranchida, Antonis Gitsas, and Roland Kádár. "Mechanical Behavior of Melt-Mixed 3D Hierarchical Graphene/Polypropylene Nanocomposites." Polymers 12, no. 6 (2020): 1309. http://dx.doi.org/10.3390/polym12061309.

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The mechanical properties of novel low percolation melt-mixed 3D hierarchical graphene/polypropylene nanocomposites are analyzed in this study. The analysis spans a broad range of techniques and time scales, from impact to tensile, dynamic mechanical behavior, and creep. The applicability of the time–temperature superposition principle and its limitations in the construction of the master curve for the isotactic polypropylene (iPP)-based graphene nanocomposites has been verified and presented. The Williams–Landel–Ferry method has been used to evaluate the dynamics and also Cole–Cole curves wer

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13

Hidalgo-Signes, C., P. Martínez-Fernández, J. Garzón-Roca, and R. Insa-Franco. "Analysis of the bearing capacity of unbound granular mixtures with rubber particles from scrap tyres when used as sub-ballast." Materiales de Construcción 66, no. 324 (2016): 105. http://dx.doi.org/10.3989/mc.2016.11515.

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Scrap tyres are a problematic waste material. As a method for recycling large quantities of rubber from scrap tyres, this paper analyses the use of unbound granular mixtures with varying percentages of rubber particles as sub-ballast in railway lines. Bearing capacity for such mixtures is studied in laboratory and field tests using static and dynamic plate load tests, as well as cyclic triaxial tests. It is found that adding rubber increases permanent and resilient strain and that none of the mixtures suffer plastic creep after 2.5 million cycles. Considering the usual bearing capacity require

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14

Karacasu, Murat, Volkan Okur, and Arzu Er. "A Study on the Rheological Properties of Recycled Rubber-Modified Asphalt Mixtures." Scientific World Journal 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/258586.

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Using waste rubber in asphalt mixes has become a common practice in road construction. This paper presents the results of a study on the rheological characteristics of rubber-modified asphalt (RMA) concrete under static and dynamic loading conditions. A number of static and dynamic creep tests were conducted on RMA mix specimens with different rubber sizes and contents, and a series of resonant column tests were conducted to evaluate the shear modulus and damping values. To simulate the stress-strain response of traffic-induced loading, the measurements were taken for different confining press

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15

Hagin, Paul N., and Mark D. Zoback. "Viscous deformation of unconsolidated reservoir sands—Part 2: Linear viscoelastic models." GEOPHYSICS 69, no. 3 (2004): 742–51. http://dx.doi.org/10.1190/1.1759460.

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Laboratory creep experiments show that dry unconsolidated reservoir sands follow a power law function of time (at constant stress), and cyclic loading tests (at quasi‐static frequencies of 10−6 to 10−2 Hz) show that the bulk modulus increases by a factor of two with increasing frequency while attenuation remains constant. In this paper, we attempt to model these observations using linear viscoelasticity theory by considering several simple phenomenological models. We investigated two classes of models: spring‐dashpot models, which are represented by exponential functions with a single relaxati

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16

Zhu, Wenbo, Guoliang Dai, and Weiming Gong. "Study on Cyclic Cumulative Deformation Characteristics and the Equivalent Cyclic Creep Model of Soft Clay." Mathematical Problems in Engineering 2021 (March 12, 2021): 1–11. http://dx.doi.org/10.1155/2021/5588494.

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Suction caisson foundations can be used to anchor tension leg platforms. The soil at the bottom of the caisson undergoes both unloading and cyclic loading under wind and wave loads. However, the problem of cyclic cumulative deformation of soft clay under unloading has rarely been addressed. So, the strain cumulative deformation and strain softening characteristics of soft clay are studied by cyclic triaxial tests. The test results show that under low static deviator stress ratios and dynamic deviator stress ratios, the soil has a low level of strain accumulation and softening. As the dynamic d

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17

Zemskova, S. M., Hua Tay Lin, Mattison K. Ferber, and A. J. Haynes. "Performance of CVD Mullite Coatings on Silicon Nitride under High Temperature High Load Conditions." Key Engineering Materials 287 (June 2005): 457–70. http://dx.doi.org/10.4028/www.scientific.net/kem.287.457.

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Previous studies have demonstrated that dense coatings of CVD mullite (3Al2O3×2SiO2) provide excellent oxidation protection for Si3N4 and SiC in a high pressure, steam environment. In this study the mechanical properties of CVD mullite coated silicon nitride materials from different vendors (AS800, NGKSN88, Kyocera SN281) were evaluated following ASTM test procedures. The dynamic fatigue tests werep erformed in ambient air at temperatures of 850 and 1200°C under fast (30 MPa/s) and slow (0.003 MPa/s) load rates. The static fatigue tests were carried out at a constant load of 350 MPa for 1000h

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18

Valenta, László, Antal Huba, and István Muka. "High Elasticity Strain Gauge Made from Conductive Silicone Rubber." Materials Science Forum 537-538 (February 2007): 709–16. http://dx.doi.org/10.4028/www.scientific.net/msf.537-538.709.

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The paper summarises the results of our investigations on the conductive silicone rubber as strain sensor. The dynamic behaviour of silicone rubber shows strong nonlinearity and because of the relaxation and creep the sensor can not be used for static measure. The greatest advantage of this material lies in its high elasticity. The commercial strain metallic or semiconductor gauges work in the range of 10-7<ε<10-3 . With the new silicone rubber sensor one can achieve elongations typically in the range of 10-2<ε<102 so this sensor offers new possibilities for the measure and control

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19

Wu, Chunli, Liding Li, Wensheng Wang, and Zhengwei Gu. "Experimental Characterization of Viscoelastic Behaviors of Nano-TiO2/CaCO3 Modified Asphalt and Asphalt Mixture." Nanomaterials 11, no. 1 (2021): 106. http://dx.doi.org/10.3390/nano11010106.

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The purpose of this paper is to promote the application of nano-TiO2/CaCO3 in bituminous materials and present an experimental characterization of viscoelastic behaviors of bitumen and bituminous mixture modified by nano-TiO2/CaCO3. In this work, a series of viscoelastic behavior characterization tests were conducted, including dynamic shear rheometer (DSR) test for bitumen, uniaxial static compression creep test and dynamic modulus test for bituminous mixture. Moreover, various viscoelastic models with clear physical meanings were used to evaluate the influence of nano-TiO2/CaCO3 on the macro

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20

Sołkowski, Juliusz, Jarosław Górszczyk, Konrad Malicki, and Dariusz Kudła. "The Effect of Fatigue Test on the Mechanical Properties of the Cellular Polyurethane Mats Used in Tram and Railway Tracks." Materials 14, no. 15 (2021): 4118. http://dx.doi.org/10.3390/ma14154118.

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The use of modern synthetic materials is an important element in the development of railway tracks. Their use is a response to the growing requirements regarding the durability of structures and environmental protection against traffic noise and vibrations. In this paper, the results of the laboratory tests of selected mechanical properties of cellular polyurethane (PUR) mats which are applied in tram and railway tracks are presented in this study. The aim of the research was to determine the effect of fatigue loading on the mechanical performance of polyurethane mats. A series of samples made

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21

Zhang, Shi Yin. "The Studying Fabrication and Application of the Multifunctional Frozen Triaxial Test Apparatus." Applied Mechanics and Materials 353-356 (August 2013): 388–91. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.388.

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The frozen soil triaxial test apparatus is the basic equipment to study the mechanics property of the frozen soil. According to the norm of frozen soil test and the construction character of the present mine, the high-performance frozen soil triaxial test apparatus is made which could be used for many type tests, such as the static triaxial shear test, the dynamic triaxial test, the triaxial creep test, the routine triaxial strain route test, the routine triaxial proportion coordination test, the routine triaxial recycle load test, the routine triaxial concretion test and so on. The apparatus

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22

Ambrosio, L., R. De Santis, and L. Nicolais. "Composite hydrogels for implants." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 212, no. 2 (1998): 93–99. http://dx.doi.org/10.1243/0954411981533863.

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Hydrophilic composite structures are designed to mimic the transport and mechanical properties of natural soft tissue such as tendons, ligaments and intervertebral discs. Mechanical and viscoelastic behaviour of a soft composite material based on a hydrogel matrix reinforced with bundles of polyethylene therephthalate (PET) fibres is analysed. The typical J-shaped stress-strain behaviour, displayed by natural tendons and ligaments, is reproduced. The mechanical characteristics, such as the extent of the ‘toe-in region’ and the elastic modulus in the linear region, can be controlled by varying

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23

Schippa, Leonardo, Ferruccio Doghieri, Anna Maria Pellegrino, and Elisa Pavesi. "Thixotropic Behavior of Reconstituted Debris-Flow Mixture." Water 13, no. 2 (2021): 153. http://dx.doi.org/10.3390/w13020153.

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Time-dependent rheological properties and thixotropy of reconstituted debris-flows samples taken from channel bank deposits are examined using a commercial rheometer equipped with a vane rotor geometric system. Sweep tests and creep tests were carried out involving mixtures having different grain concentrations ranging between 50% and 58%. Different initial conditions of the mixtures were considered in order to analyze the effects of aging and rejuvenation (thixotropy) over a short period of time and long period of time. Tested slurries show viscosity bifurcation, yield stress and time-depende

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Schippa, Leonardo, Ferruccio Doghieri, Anna Pellegrino, and Elisa Pavesi. "Thixotropic Behavior of Reconstituted Debris-Flow Mixture." Water 13, no. 2 (2021): 153. http://dx.doi.org/10.3390/w13020153.

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Time-dependent rheological properties and thixotropy of reconstituted debris-flows samples taken from channel bank deposits are examined using a commercial rheometer equipped with a vane rotor geometric system. Sweep tests and creep tests were carried out involving mixtures having different grain concentrations ranging between 50% and 58%. Different initial conditions of the mixtures were considered in order to analyze the effects of aging and rejuvenation (thixotropy) over a short period of time and long period of time. Tested slurries show viscosity bifurcation, yield stress and time-depende

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25

Huang, Jia’ning, Ruiduo Li, Song Yin, and Pengfei Liu. "Experimental Study on the High-Temperature Shear Performance of Asphalt Mixtures." Advances in Materials Science and Engineering 2021 (September 9, 2021): 1–11. http://dx.doi.org/10.1155/2021/6428018.

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The influence of temperature on the shear performance of asphalt mixtures and the feasibility of using the deformation strength as an index of the high-temperature shear performance of these mixtures were explored in this study. Taking AC-13C and AC-20C asphalt mixtures as the research objects, uniaxial compression, rutting, deformation strength, and uniaxial static load creep tests were carried out at temperatures 40°C, 45°C, 50°C, 55°C, and 60°C. The correlations between the deformation strength and modulus of resilience, compressive strength, dynamic stability, and stiffness of the asphalt

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26

Feng, Yue, Shoune Xiao, Bing Yang, Tao Zhu, Guangwu Yang, and Zhiwu Zhu. "Dynamic constitutive relation of 5083P-O aluminium alloy and its influence on energy-absorbing structure." Advances in Mechanical Engineering 10, no. 10 (2018): 168781401880733. http://dx.doi.org/10.1177/1687814018807334.

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Dynamic and quasi-static tensile tests of 5083P-O aluminium alloy were carried out using RPL100 electronic creep/fatigue testing machine and the split Hopkinson tension bar, respectively. The dynamic constitutive relation of the material at high strain rates was studied, and the constitutive model in accordance with Cowper–Symonds form was established. At the same time, a method to describe the constitutive relation of material using the strain rate interpolation method which is included in LS-DYNA software was proposed. The advantages and accuracy of this method were verified by comparing the

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27

Zhou, Eric, Youqi Wang, David Meggers, and Jerry Plunkett. "Field Tests to Determine Static and Dynamic Response to Traffic Loads of Fiber-Reinforced Polyester No-Name Creek Bridge." Transportation Research Record: Journal of the Transportation Research Board 2028, no. 1 (2007): 231–37. http://dx.doi.org/10.3141/2028-25.

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28

Roiron, Coline, Eric Lainé, Jean-Claude Grandidier, Nicolas Garois, and Cathie Vix-Guterl. "A Review of the Mechanical and Physical Properties of Polyethylene Fibers." Textiles 1, no. 1 (2021): 86–151. http://dx.doi.org/10.3390/textiles1010006.

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Since the 1970s and 1980s, a major effort has been made to study UHMWPE (Ultra-High Molecular Weight PolyEthylene) fibers with remarkable mechanical properties, based on a basic polymer such as PE (PolyEthylene). These performances are above all associated with a very strong alignment of the molecules and the microfibrillar structures formed using various processes. However, they vary greatly depending on many parameters, and particularly on the draw ratio. Thus, these characteristics have been extensively analyzed by dynamic, static tensile, and creep tests, and are predominantly viscoelastic

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29

Zarzour, Mark, and John Vance. "Experimental Evaluation of a Metal Mesh Bearing Damper." Journal of Engineering for Gas Turbines and Power 122, no. 2 (2000): 326–29. http://dx.doi.org/10.1115/1.483214.

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Metal mesh is a commercially available material used in many applications including seals, heat shields, filters, gaskets, aircraft engine mounts, and vibration absorbers. This material has been tested by the authors as a bearing damper in a rotordynamic test rig. The test facility was originally used to support the design of a turboprop engine, developing squirrel cages and squeeze film dampers for both the gas generator and power turbine rotors. To design the metal mesh damper, static stiffness and dynamic rap test measurements were first made on metal mesh samples in a specially designed no

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30

Li, Jiaqi, Zhaoyi He, Le Yu, Lian He, and Zuzhen Shen. "Multi-Objective Optimization and Performance Characterization of Asphalt Modified by Nanocomposite Flame-Retardant Based on Response Surface Methodology." Materials 14, no. 16 (2021): 4367. http://dx.doi.org/10.3390/ma14164367.

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In order to improve the safety of the tunnel asphalt pavement in the event of a fire, and reduce the deterioration of the low temperature crack resistance of the asphalt by the flame retardant. The research uses aluminum hydroxide (ATH) as a smoke suppressant, diethyl aluminum hypophosphite (ADP) as a flame retardant, and halloysite nanotubes (HNTs) as a synergist to modified styrene-butadiene-styrene block copolymer (SBS) modified asphalt (MA). First, the content of ATH, ADP, and HNTs was used as the response variable. The physical properties (Penetration, Softening point, Ductility) and stat

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31

Kim, J., R. Roque, and B. Birgisson. "Obtaining Creep Compliance Parameters Accurately from Static or Cyclic Creep Tests." Journal of ASTM International 2, no. 8 (2005): 12263. http://dx.doi.org/10.1520/jai12263.

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Huu Hung, Nguyen, Pal Jen Wei, and Jen Fin Lin. "Compensating for Creep Effects in One-Indent Nanoindentation Tests." Applied Mechanics and Materials 764-765 (May 2015): 28–31. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.28.

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Detailed observations of nanoindentation static creep effects exhibited in polymethylmethacrylate (PMMA) is presented and discussed in this study. One-indent nanoindentation technique, the partial unloading measurement (PUM) method, is compared with the basic measurement BM method (i.e., an array of multiple single indents with various magnitudes). The experimental results for PMMA reveal a strong dependence on the loading conditions. It was found that the PUM results for PMMA are not consistent with the corresponding BM results due to significant static. The creep depths accumulated and incre

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Goh, Eui Kyung, and Kyong Myong Chon. "Static and Dynamic Body Balace Tests." Journal of Clinical Otolaryngology Head and Neck Surgery 3, no. 1 (1992): 6–13. http://dx.doi.org/10.35420/jcohns.1992.3.1.6.

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Jiang, Hao, Oluwadamilola Ogunmola, Zizhen Zhao, Bingbing Li, and Xu Chen. "Cyclic Creep Behavior and Modified Life Prediction of Bainite 2.25Cr-1Mo Steel at 455 °C." Metals 10, no. 11 (2020): 1486. http://dx.doi.org/10.3390/met10111486.

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Uniaxial static and cyclic creep tests were carried out on bainite 2.25Cr-1Mo steel at 455 °C. Effects of the unloading rate from 0.6 to 39 MPa/s and valley stress duration from 0 to 30 min on the cyclic creep deformation behavior were discussed. The results indicated that the fracture behavior under static and cyclic creep conditions showed a consistent ductile mode. The strain accumulation rate under cyclic creep was significantly retarded as compared with static creep due to the presence of anelastic recovery which was apparently influenced by the unloading conditions. For cyclic creep test

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35

Atkinson, Scott E., and Robert Halvorsen. "Parametric tests for static and dynamic equilibrium." Journal of Econometrics 85, no. 1 (1998): 33–50. http://dx.doi.org/10.1016/s0304-4076(97)00092-4.

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Lee, Peter K. K., Duen Ho, and Hung‐Wan Chung. "Static and Dynamic Tests of Concrete Bridge." Journal of Structural Engineering 113, no. 1 (1987): 61–73. http://dx.doi.org/10.1061/(asce)0733-9445(1987)113:1(61).

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37

Menon, Krishna K., and Andris Freivalds. "Repeatability of Dynamic Strength Tests." Proceedings of the Human Factors Society Annual Meeting 29, no. 5 (1985): 517–20. http://dx.doi.org/10.1177/154193128502900525.

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The repeatability of dynamic strength tests was examined by calculating coefficients of variations (CV) for the forces exerted on lifting tests using the legs, torso and arms. Static strengths were also measured and compared to dynamic strengths. The CV for dynamic strengths, was in fact slightly lower than for static strengths, 9.79% vs. 10.6%. The correlations between the two types of strength measurements were large (r=.8l) and significant, indicating that along with good repeatability dynamic tests are an acceptable form of employee strength measurement.

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Somà, Aurelio, Muhammad Mubasher Saleem, and Giorgio de Pasquale. "Effect of creep in RF MEMS static and dynamic behavior." Microsystem Technologies 22, no. 5 (2015): 1067–78. http://dx.doi.org/10.1007/s00542-015-2469-8.

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Buteau, Sylvie, Richard Fortier, and Michel Allard. "Rate-controlled cone penetration tests in permafrost." Canadian Geotechnical Journal 42, no. 1 (2005): 184–97. http://dx.doi.org/10.1139/t04-093.

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Cone penetration tests (CPTs) were carried out in the summers of 1999 and 2000 in a permafrost mound near Umiujaq, in northern Quebec, Canada, to study the cryostratigraphy and assess the creep behaviour of permafrost. A new linear pushing system using an actuator technology was specifically designed and developed to accurately control the penetration rate of the cone in the permafrost. This system has a load capacity of about 113 kN at a maximum penetration rate of 1.5875 cm/s and a stroke of 120 cm and can provide constant penetration rates as low as 4 × 106 cm/s. It can be disassembled in

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40

Yakovlyuk, A., M. Czech, M. Pleva, and V. Ermolai. "Investigation of the creep and micropolar creep of various materials under static and dynamic loads." Strength of Materials 25, no. 12 (1993): 870–74. http://dx.doi.org/10.1007/bf00774632.

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Huang, Wanpeng, Wenbin Xing, Shaojie Chen, Yang Liu, and Kai Wu. "Experimental Study on Sedimentary Rock’s Dynamic Characteristics under Creep State Using a New Type of Testing Equipment." Advances in Materials Science and Engineering 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/7623086.

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Under high stress, rock in the creep state is vulnerable to external impact load, causing the irreversible perturbation deformation of rock or even sudden failure. To explore the dynamic characteristics of sedimentary rock in the creep state, a siltstone specimen was experimentally studied using a new type of experimental system for rock creep perturbation. Compared to the currently available equipment for studying rock dynamics, this new type of experimental system provides a long-term and stable high static stress to maintain the creep state of rock specimen. This is independent of power sup

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Blahovec, J., V. Mareš, and F. Paprštein. "Static and dynamic tests of pear bruise sensitivity." Research in Agricultural Engineering 50, No. 2 (2012): 54–60. http://dx.doi.org/10.17221/4927-rae.

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The paper is a continuation of the preceding research of bruising sensitivity applied to different pear varieties. This study was based on quasi-static fruit testing in compression between two plates. One part of the method is based on determining the hysteresis losses corresponding to the predetermined low level bruising. This paper contains an attempt to apply the hysteresis loss concept to dynamical impact tests, which are simpler and quicker then quasi-static ones. Moreover the impact tests are closer to the character of deformations that initiating the bruising process in real conditions.

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Usmani, A. S. "Fire, static and dynamic tests of building structures." Fire Safety Journal 36, no. 4 (2001): 417–18. http://dx.doi.org/10.1016/s0379-7112(01)00004-2.

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KOZHEVNIKOV, I. S., A. V. BOGOSLOVSKII, M. S. FUFAEVA, and V. N. MANZHAY. "Static and Dynamic Tests of Polyvinyl Alcohol Cryogels." Chemistry for Sustainable Development 29, no. 2 (2021): 138–42. http://dx.doi.org/10.15372/csd2021287.

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Sheahan, Thomas C. "Interpretation of undrained creep tests in terms of effective stresses." Canadian Geotechnical Journal 32, no. 2 (1995): 373–79. http://dx.doi.org/10.1139/t95-038.

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The paper provides an effective stress-based interpretation technique for undrained creep behavior in cohesive soils. This technique could ultimately be used to predict whether a particular applied shear stress level will lead to failure or creep rupture. During the primary phase of undrained creep at constant shear stress, the soil's strain rate decreases, which in turn leads to a decrease in the undrained shear strength. However, it has been shown for a number of soils that a minimum undrained strength, or upper yield strength (suy), is eventually reached regardless of further strain rate de

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Guo, Fei, Cheng-bin Du, Guo-jun Yu, and Run-pu Li. "The Static and Dynamic Mechanical Properties of Magnetorheological Silly Putty." Advances in Materials Science and Engineering 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/7079698.

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A novel magnetorheological material defined as magnetorheological Silly Putty (MRSP) is prepared by dispersing soft magnetic particles into Silly Putty matrix with shear stiffening property. Static mechanical properties including creep and stress relaxation and dynamic rheological properties of MRSPs are tested by rheometer. The experimental results indicate that the external magnetic field exerts significant influence on the creep and relaxation behaviors. Moreover, the storage modulus of MRSPs increases sharply in response to the external stimuli of increasing angular frequency automatically

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Orlet, M. W., and C. E. Bakis. "Viscoelastic Characterization of High Fiber Content Filament Wound Polyurethane Matrix Composites." Rubber Chemistry and Technology 71, no. 5 (1998): 1042–58. http://dx.doi.org/10.5254/1.3538509.

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Abstract Elastomeric matrix composites (EMCs) consisting of a polyurethane matrix unidirectionally reinforced with high volume fractions of high strength fibers have interesting and unique mechanical properties such as high strength and stiffness in the fiber direction and high ductility perpendicular to the fibers. The aim of this investigation is to explore the quasi-static mechanical properties of glass and carbon fiber EMCs in the direction transverse to the fibers and to measure and model the creep of the monolithic matrix material and the transverse creep of the glass EMC. In the quasi-s

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El-Shafie, Ahmed, and Siti Aminah. "Dynamic versus static artificial neural network model for masonry creep deformation." Proceedings of the Institution of Civil Engineers - Structures and Buildings 166, no. 7 (2013): 355–66. http://dx.doi.org/10.1680/stbu.11.00024.

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Zhou, Zilong, Xibing Li, Yang Zou, Yihui Jiang, and Guonan Li. "Dynamic Brazilian Tests of Granite Under Coupled Static and Dynamic Loads." Rock Mechanics and Rock Engineering 47, no. 2 (2013): 495–505. http://dx.doi.org/10.1007/s00603-013-0441-4.

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Gloggnitzer, Stefan, Gerald Pilz, Christian Schneider, and Gerald Pinter. "Novel Approach for the Lifetime Prediction of Composite Materials under Static Loads." Key Engineering Materials 809 (June 2019): 620–24. http://dx.doi.org/10.4028/www.scientific.net/kem.809.620.

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Composite materials in structural applications that are subjected to static loads for several decades tend to change material performance over their lifetime. Classical creep tests with constant static loading are quite simple tests with low demands on the test equipment. Unfortunately, these tests require uneconomically long test times, which is why a shortening of the test times with various accelerated approaches is being researched. Within this work two approaches for reduction of the testing time were investigated. On the one hand a fatigue test with the variation of R-ratio and following

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