Results 251 to 260 of about 6,955,063 (294)

Pullout Test With Three Lumbar Interbody Fusion Cages

Spine, 2002
In vitro biomechanical testing was performed on 12 cadaveric human lumbar spines.To determine the initial dislocation resistance, as quantified by the pullout force of three different cage designs.Interbody cage devices frequently are used as stand-alone cages in the surgical treatment of degenerative conditions in the lumbar spine.
Rupert H J, Dietl, Matthias, Krammer, Annette, Kettler, Hans-Joachim, Wilke, Lutz, Claes, Christianto B, Lumenta   +5 more
openaire   +2 more sources

Direct Tension Pullout Bond Test: Experimental Results

Journal of Structural Engineering, 2010
Results from 50 bond tests conducted using the so-called direct tension pullout specimen type are presented. Anchorages of steel bars with machined deformations were tested so as to enable a targeted study of the effect of rib height and related rib area on bond behavior; tests were conducted with or without the combined presence of external ...
Tastani, S. P., Pantazopoulou, Stavroula J., Tastani, S. P., Pantazopoulou, Stavroula J.   +3 more
openaire   +2 more sources

Element Nail Pullout Tests for Prediction of Soil Nail Pullout Resistance in Expansive Clays

Geotechnical Testing Journal, 2018
Abstract The performance of soil nail systems relies primarily on soil-nail interaction, which is especially complex for nails embedded in clay materials. Soil-nail interaction is difficult to predict in these soils because of the effect of moisture-induced stress and swelling along the interface between soil and nail.
Changfu Chen, Genbao Zhang, Jorge Gabriel Zornberg, Xinxiu Zheng   +3 more
openaire   +1 more source

Circumferential strains of a concrete specimen in a pullout test

Structural Concrete, 2019
Pullout test of a rebar from an axisymmetric concrete specimen yields the bond‐slip relationship characterizing the rebar‐concrete interfacial constitutive relationship. It is assumed that inclined compressive forces are developed between the rebar ribs and the concrete during pullout. The components of the inclined forces that are perpendicular to the
Orit Leibovich, David Z. Yankelevsky, Avraham N. Dancygier   +2 more
openaire   +1 more source

Large scale pullout testing of geosynthetics

2010
An evaluation of soil-geosynthetic interface friction is important to the design of any anchorage detail of a reinforced soil structure or membrane-lined waste containment facility. A large pullout apparatus has been designed and commissioned to evaluate the mobilization of pullout resistance in geosynthetic test specimens.
openaire   +1 more source

Theoretical Analysis of the Fiber Pullout and Pushout Tests

Journal of the American Ceramic Society, 1991
The fiber pullout and pushout tests have been analyzed to predict the load‐displacement behavior in terms of fiber/matrix interface parameters. The effects of residual axial strain in the fiber and fiber surface topography were included. The residual axial strain was found to be a significant parameter.
Ronald J. Kerans, Triplicane A. Parthasarathy   +1 more
openaire   +1 more source

Friction and Passive Resistance of Geogrid in Pullout Tests

Advances in Ground Improvement, 2009
The total pullout resistance of geogrid in a soil includes two components: (1) the interface friction resistance that takes place along longitudinal ribs and (2) the passive resistance that takes place against the front of transverse ribs. A series of pullout tests and analyses were conducted to quantify the contributions of the above two components to
Xingyue Liao, Guanbao Ye, Chao Xu
openaire   +1 more source

The Influence Factors Study for Geogrid Pullout Test

2000
The interaction coefficient of pullout (μ) between the interface of soil and geosynthetic is known the major parameter for designing the details of the reinforced soil. To obtain this coefficient (μ), it is suggested to perform the pullout test. Some researchers followed GRI or the like to guide the procedures for running this test. However, details of
DT-T Chang, F-C Chang, G-S Yang, C-Y Yan
openaire   +1 more source

PULLOUT TESTS OF MASONRY ADHESIVE ANCHORS

The accurate estimation of the pullout capacity of adhesive anchor is critical for the seismic retrofit of unreinforced masonry (URM) structures. However, there is a lack of publicly available test data on the performance of these anchors, while a number of factors can influence this performance.
openaire   +1 more source

Screw Pullout Testing

1999
Lisa Ferrara, Timothy Ryken
openaire   +2 more sources