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Showing 1 to 20 of 78 for “"Shear Test"”.
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Analysis of shear test methods for composite laminates
… of the stress distributions in four flat test specimens for in-plane shear response of composite materials subjected to mechanical or thermal loads is presented. The shear test specimens investigated include: slotted coupon, cross beam, Iosipescu, and rail shear. Results are presented in …
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A New Shear Test Method for Mortar Bed Joints
From a review of existing test methods devised to determine the shear strength of a mortar joint, it was concluded that among the existing methods, the triplet test is the simplest to perform and the Hofmann & Stöckl test provides the best results in terms of uniform stresses. The advantages of …
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New in-plane and interlaminar shear test methods for fiber reinforced composites
… new compact double-notched specimen for in-plane shear testing of isotropic, anisotropic and composite materials was developed. A preliminary test of the specimen was performed on a cross-ply laminate. High sensitivity moire interferometry was used to determine the shear and normal strains on the …
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A study of tension, compression, and shear test methods for advanced composites
A study of the literature pertaining to test methods for advanced composite materials has been carried out. Several test methods were discussed and compared for each of three areas of interest. These areas were uniaxial tension, uniaxial compression and in-plane shear. Test methods were selected …
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Extending the annular in-plane torsional shear test specimen to applications at high strain rates
The in-plane torsion test is a well-established test used for the characterisation of sheet metals. The specimen is intended to deform in planar simple shear and is designed to be machined with a continuous annular shear zone. As a result, there are no “edge effects” or geometric discontinuities to …
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Evaluation of the MD shear test method as a criterion for predicting box compressive strength
… rigidities of the panel and its transverse shear rigidities. McKinlay proposed a new method to measure the MD transverse shear stiffness of corrugated board. This research was aimed at designing a fixture to perform the MD shear test and to evaluate its performance. In addition, the …
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Experimental and numerical study of the rod shear test for determining steel-sand interface behavior
… the unit side resistance of piles is the rod shear test. In a rod shear test a model pile is placed inside a cylindrical soil specimen. A confining pressure is then placed around the specimen/pile assembly and the model pile axially loaded. In some cases rod shear tests in sands have produced …
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Rolling Shear Strength and Modulus for Various Southeastern US Wood Species using the Two-Plate Shear Test
… CLT material properties, especially rolling shear, would need to be explored. The increasing demand for softwood lumber, along with the increase of demand of CLT panel production, could place a burden and surpass the domestic softwood supply. Rolling shear is a phenomenon that occurs when the …
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Direct shear and direct simple shear tests: a comparative study of the strength parameters and their dependence on moisture and fines contents
Shear strength of soil is characterized by cohesion, angle of internal friction and dilatation. The first two parameters mentioned primarily define the soil's ability to resist shear stress underspecified load. These parameters can be determined by tests conducted either in the laboratory or the …
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Correlation of three standard shear tests for unidirectional glass-epoxy composites
The shear strength of unidirectional glass-epoxy composites was determined experimentally by three standard shear tests. The tests consisted of short beam interlaminar shear tests, saw-cut shear tests, and torsion tests on circumferentially wound cylinders. Test results show that the short beam …
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Comparison of direct shear and triaxial tests for measurement of shear strength of sand
To ascertain the shear strength parameters of soils for engineering purposes is fundamental to soil mechanics and basic for designing earth-bearing and earth-retaining structures. Direct shear and triaxial tests are the most popular laboratory methods to determine these parameters. The direct shear …
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Seismic Stability of Slopes in Sensitive Cohesive Soils
The use of the field vane shear test for measuring the undrained peak and residual shear strength was also reviewed. A correction factor for use of the vane shear strengths in seismic stability evaluations was proposed. The validity of the proposed correction factor was verified using the Fourth …
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Three Dimensional Numerical Modeling of Excavation in Rock With Dilatant Joints
… is modeled using the plastic work done in shear. A dimensionless product of plastic work, rock strength, and wavelength of irregularities has been developed which fits the direct shear test results. An approach to scaling shear strength and shear displacement from laboratory to in the field …
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Rheometric measurement of hydrogel toughness
… such as toughness. However, traditional tensile testing methods do not work for such materials due to the intrinsic softness of the material. We present a novel method for measuring fracture energy using a rheometer and show it is broadly consistent with the pure shear test, a standard method …
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The behaviour of clay in simple shear and triaxial tests
… of critical state soil mechanics to simple shear testing. The problems with the simple shear apparatus and the approach for interpreting simple shear test results are described. Laboratory tests were conducted using the NGI simple shear apparatus, standard shear box arid computer controlled …
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Mechanistic-Empirical Evaluation of the Mn/ROAD Low-Volume Road Test Sections
… for LVR flexible pavements. Laboratory test results, field distress measurements, and FWD test data were used to study the effect of granular material quality on pavement performance and deflection response. The results from the rapid shear tests and permanent deformation tests show that …
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Enhancement of Shaft Capacity of Cast-in-Place Piles Using a Hook System
… of passive inclusion on pile-soil interface shear strength behaviour, employing a modified direct shear test apparatus. The interface strength obtained for pile-soil specimens was found to significantly increase when passive inclusions were implemented. Residual friction angle for …
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Analysis of the Interface Properties of Multi-material 3D Printed Structures
… samples of the same base material with a shear test to assess their mechanical performance. Strain variations on the samples were analyzed and post-processed with DIC software as different material combinations were explored. Additionally, statistical analysis was performed to validate the …
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The effect of residual thermal stresses on the viscoelastic behavior of adhesively bonded joints
… in-situ behavior has led to numerous adhesive test geometries. The current study was an attempt to predict the nonlinear viscoelastic response of an adhesive in-situ using properties obtained from a pure shear test geometry. Four candidate adhesive test geometries were studied both analytically …
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The shear gage and compact shear specimen for shear property measurements of composite materials
Techniques for shear property measurements for composite and isotropic materials were investigated. A new strain gage called the shear gage was conceived, designed, and tested for routine shear characterization on notched shear specimens. The shear gage integrates the shear strain in the entire …
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