Results 271 to 280 of about 4,001,407 (359)

Cyclic loading in knee ligament injuries

The American Journal of Sports Medicine, 1980
The effect of cyclic loading on knee ligaments was studied both in vivo and in vitro. The compliance of the medial collateral ligaments of athletes participating in hockey, basketball, soc cer, and downhill skiing was determined by using a specially built machine. Tests were conducted before and after partici pation in the various sports. Most subjects
G, Weisman, M H, Pope, R J, Johnson
openaire   +2 more sources

Damage of Marble from Cyclic Loading

Journal of Materials in Civil Engineering, 2001
The behavior of marble was investigated to evaluate the damage and failure mechanisms produced from cyclic loading. Approximately 100 cycles of increasing load steps, representing low cycle fatigue, were imposed on beams in three and four-point bending. Damage was recorded through an array of strain gauges and an interferometric technique that provided
CATTANEO, SARA, J. Labuz
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The Behavior of Salem Limestone in Cyclic Loading

Society of Petroleum Engineers Journal, 1974
Abstract Specimens of Salem limestone were loaded cyclically at a frequency of 2 cycles/sec in uniaxial cyclic compression, tension, and compression-tension. The number of cycles to failure, maximum deformation for each cycle, and load-deformation hysteresis loops were recorded.
S.S. Peng,, E.R. Podnieks,, P.J. Cain,
openaire   +1 more source

Nonlinear behavior and damage model for fractured rock under cyclic loading based on energy dissipation principle

Engineering Fracture Mechanics, 2019
In practical engineering, it is a common phenomenon of rocks subjected to cyclic loading. Such as mining engineering, subgrade engineering and earthquake engineering.
Tian-tao Li, X. Pei, Dong-po Wang, Run-qiu Huang, Hao Tang   +4 more
semanticscholar   +1 more source

Crown retention and cyclic loading (in vitro)

European Journal of Oral Sciences, 1993
Cast gold crowns were luted on extracted and prepared human teeth with zinc phosphate cement and subjected to a fatigue test by cyclic loading. The correlation between crown retention and three retention variables was determined by the fatigue test. The results show that the smallest convergence angle tested, 20°, gave better retention than did angles ...
A, Gundler, P, Lockowandt, S, Erhardson
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Experimental and numerical investigations on crack development and mechanical behavior of marble under uniaxial cyclic loading compression

, 2020
Rock masses in underground excavations are exposed to cyclic loading due to several factors, such as blasting and mechanical excavation, etc. However, the understanding for the effect of cyclic loadings on rock damage remains not completely clear.
B. Fu, L. Hu, Chun’an Tang
semanticscholar   +1 more source

Pile Load Tests: Cyclic Loads and Varying Load Rates

Journal of the Geotechnical Engineering Division, 1981
Two series of axial load tests were performed on four 14-in. (356-mm) diam, open-end, steel pipe piles at an interval of about 320 days. Pile lengths of 40 ft or 50 ft (12.2 or 15.2 m) were installed below conductors driven to depths ranging from 115 ft to 320 ft (35 m to 98 m) into a strong underconsolidated clay. Each pile was subjected to as many as
Leland M. Kraft, Edward A. Verner, William R. Cox   +2 more
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Cyclic Pressuremeter Tests for Cyclic Lateral Loads

Offshore Technology Conference, 1984
ABSTRACT The results of thirteen cyclic pressuremeter tests performed in hand augured holes on a stiff clay are presented. These tests show that the slope of the unload-reload loop stabilizes after only a few cycles but that the strain at the peak of the cycle continues to cumulate long after the slope of the loop ...
J.L. Briaud, K.B. Riner, S. Ohya
openaire   +1 more source

An anisotropic bounding surface elastoplastic constitutive model for frozen sulfate saline silty clay under cyclic loading

, 2020
To study the mechanical properties of frozen saline soil under cyclic loading, the cyclic tri-axial compressive experiments of 36 samples are performed for frozen saline silty clay with 0.0, 0.5, 1.5 and 2.5% of Na2SO4 contents at the temperature of −6 ...
Yanhu Zhao, Y. Lai, W. Pei, Fan Yu
semanticscholar   +1 more source

Bond behavior between basalt fiber-reinforced polymer bars and concrete under cyclic loading

, 2020
Concrete structures reinforced with fiber-reinforced polymer (FRP) bars are frequently subjected to cyclic loadings. The bond behavior between FRP bars and concrete under cyclic loading is important in evaluating the seismic and fatigue performance of ...
D. Shen, Chuyuan Wen, P. Zhu, Ming Li, B. Ojha, Chengcai Li   +5 more
semanticscholar   +1 more source