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Mechanics of bond under repeated loading
Construction and Building Materials, 2011Abstract In the last two decades, an increase in the live loads applied to structures, such as bridges, coupled with a decrease in dead load due to the use of lighter high-strength materials have made the effect of repeated loading on these structures more pronounced.
Ahmad Rteil, Timothy Topper
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Repeated compressive loading of a sand
Canadian Geotechnical Journal, 1979Twelve repeated load drained triaxial tests to at least 105 cycles on a sand are reported. A threshold stress of about 50% of the static failure strength was found. Below the threshold stress, the permanent deformation and resilient modulus reached constant values. Above the threshold stress, the permanent deformation began to increase rapidly and the
P. N. Gaskin +3 more
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Repeated load testing of a granular material
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1974Both the resilient and permanent strains were measured and shown to reach equilibrium values after some 10 4 stress cycles under drained test conditions. The effect of changes in both the mean level and the amplitude of the deviator stress were studied and samples were tested at various constant cell pressures.
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The response of posteroanterior lumbar stiffness to repeated loading
Manual Therapy, 2002Lumbar posteroanterior (PA) responses are determined by manual examination and are used to guide treatment decisions and interpret changes in symptoms within and between treatments. Mechanical devices that simulate manual assessment have been developed to measure lumbar PA responses.
D, Shirley, E, Ellis, M, Lee
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Cementum Crack Formation by Repeated Loading In Vitro
Journal of Periodontology, 2007Background: 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 +3 more
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[Repeated ergometric loading].
Vnitrni lekarstvi, 1989The action of cardioactive substances is tested by repeated ergometric loads. The aim of the present work was to assess whether after previous loads in the organism certain adaptational changes persist, cardiovascular, respiratory or metabolic, which might influence the course of a subsequent load.
M, Kozáková, J, Petrtýl, V, Tesar
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Repeated loading on single piles in sand
International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1980Nondynamic 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 Load Aggregate Degradation
2020Degradation 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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Pressures on Retaining Wall with Repeated Loading
Journal of the Geotechnical Engineering Division, 1977The 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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