Results 211 to 220 of about 357,221 (262)

Cementum Crack Formation by Repeated Loading In Vitro

Journal of Periodontology, 2007
Background: In this study, the hypothesis was adopted that fatigue destruction may develop on the cementum of the root surface because of the repeated occlusal stresses loaded on the tooth as in the case of prolonged occlusal trauma. The purpose of this study is to clarify whether cemental fatigue destruction occurs when repeated stresses are loaded on
Noriyoshi, Noma, Hiroshi, Kakigawa, Yoshio, Kozono, Makoto, Yokota   +3 more
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Repeated Load Aggregate Degradation

2020
Degradation of a variety of aggregate types, commonly used as ballast by the CN and CP railroads in Canada, and a non-ballast, were evaluated in the laboratory under different gradings, applied stresses, and density conditions. The ballasts were subjected to the one-dimensional and triaxial repeated loading stress states, encompassing some of the ...
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Bond under Repeated Loading

SP-180: Bond and Development of Reinforcement - A Tribute to Dr. Peter Gergely, 1998
Characteristic results of more than 100 cyclic pull-out tests are presented including various load histories (simulating realistic load spectra) like random loading or variable amplitude loading with increasing or decreasing tendencies in addition to the constant amplitude loading with different amplitudes.
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Pressures on Retaining Wall with Repeated Loading

Journal of the Geotechnical Engineering Division, 1977
The pressures on earth retaining structures that support backfills carrying moving loads have always been estimated by using methods that assume these loads to be applied in a static condition: the effect of these loads being repeated is not considered.
Mostafa M. Sherif, Robert D. Mackey
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Repeated and Reversed Loading in Reinforced Concrete

Journal of the Structural Division, 1966
THREE BEAMS TESTED AT THE UNIVERSITY OF ILLINOIS, DURING 1959-61 WERE SUBJECTED TO REVERSAL IN THE DIRECTION OF LOADING AND 18 OTHERS WERE SUBJECTED TO REVERSAL OF LOADING IN ONE DIRECTION. THE BEHAVIOR OF THE THREE BEAMS SUBJECTED TO REVERSAL OF LOADING IS DISCUSSED IN DETAIL.
Ned H. Burns, Chester P. Siess
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Repeated loading on single piles in sand

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1980
Nondynamic repeated load tests were conducted on single friction piles embedded in a medium dense sand. The 19-mm (0.75-in.) diam pile was instrumented to measure the distribution of axial loads along the shaft. It was found that the response of the pile to repeated loads is governed by the: (1)Type of load; (2)amplitude of load; anf (3)number of ...
Sin-Fatt Chan, Thomas H. Hanna
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Repeated and Dynamic loading

1991
The response of deep foundations to repeated dynamic loading has been a subject of considerable interest in recent years in relation to the seismic design of important structures such as nucIear power plants, offshore structures and vibrating machines, etc, In spite of significant efforts on the part of theoretical and experimental researchers and the ...
FIORAVANTE, Vincenzo, MUZZI F.
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Embedment Anchors Subjected to Repeated Loading

Journal of the Geotechnical Engineering Division, 1978
In order to provide a reliable method of estimating the effects of repeated loading on the holding capacity of an anchorage for the purpose of designing embedment anchor systems for long-term use, tests were performed on circular plate anchors connected to a rigid tie shaft which were placed in a medium, uniform saturated sand.
Andreas Andreadis, Roger C. Harvey, Eldon Burley   +2 more
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Apparatus for Repeated Load Tests on Soils

1960
In recent years there has been a considerable awareness among soil engineers concerned with highway and airport construction of the need for studies of the behavior of soil under repeated loading. Studies conducted by the State of California Division of Highways (1)3 for example, have shown that highway pavements may fail by fatigue as a result of the ...
H. B. Seed, J. W. N. Fead
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Trends in Deflection with Application of Repeated Loads

Transportation Research Record: Journal of the Transportation Research Board, 2008
Falling weight deflectometer (FWD) testing is now considered routine for the evaluation of pavement structures. Averaging of FWD load and deflection data collected at the same location and similar drop loads is common before further analysis. The stated reason for this averaging is to decrease the effect of the random error inherent in FWD deflection ...
Peter N. Schmalzer, Travis R. Thompson, Amy L. Simpson   +2 more
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