The measurement of the shear strength of adhesive joints in torsion

Bryant, Roland W.; Dukes, W. A.

doi:10.1088/0508-3443/16/1/316

Cited by 30 publications

(5 citation statements)

References 1 publication

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“…According to Adams et al [18] increasing the adhesive thickness and adherend stiffness, or decreasing the overlap length and shear modulus of adhesive, it will decrease the shear stress capacity in the adhesive so providing a stronger bonding joint. Bryant and Dukes [19] have performed a study to measure the strength of joints. Based on this study, they discovered that thinner joint has a stronger bond.…”

Section: Shear Strength and Characteristic Failure For The Lap Shear mentioning

confidence: 99%

Strength and Interface Adhesion Properties of in-Plane Shear Loaded Thick Adhesive Joint

Azlan¹,

Francis²,

Ahmad³

2018

IJET

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This paper addresses the quality of the interface bonded joints in layers of timber elements. The shear performance was studied to assess the suitability of adhesive to bond timber with different thickness of glueline and timber densities. Since there is absolute test method in establishing the shear strength of the surface bonds between layers timber elements, two test methods were used namely Thick Adherend Shear Test [TAST] and Lap Shear Test. The adhesived used is Sikadur-30 and timber used are Sesendok, Bintangor and Kempas with average densities 400-600kg/m3, 600-800kg/m3 and 800-1000kg/m3 respectively. Obtained results suggest that the interface stress distribution are related to the thicknesses of adhesive and densities of timber.

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Section: Shear Strength and Characteristic Failure For The Lap Shear mentioning

confidence: 99%

Strength and Interface Adhesion Properties of in-Plane Shear Loaded Thick Adhesive Joint

Azlan¹,

Francis²,

Ahmad³

2018

IJET

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“…As already mentioned, the multi-axial nature of the MATT failure theory was evaluated using test data generated with the napkin ring specimen 7,8 (also oral presentation cited earlier) on the axial/torsion test machine. For these tests, the specimens were loaded with a combination of both normal and shear stresses.…”

Section: Multi-axial Failurementioning

confidence: 99%

Evaluation of a Multi-Axial, Temperature- and Time- Dependent Failure Mode

2004

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To obtain a better understanding of the response of the structural adhesives used in the space shuttle's reusable solid rocket motor (RSRM) nozzle, an extensive effort has been conducted to characterize in detail the failure properties of these adhesives. This effort involved the development of a failure model that includes the effects of multi-axial loading, temperature, and time. An understanding of the effects of these parameters on adhesive failure is crucial to the prediction of safety of the RSRM nozzle. The use of this newly developed multi-axial, temperature, and time-dependent failure model for modeling failure for the adhesives TIGA 321, EA913NA, and EA946 is documented. The development of the mathematical failure model using constant load rate data for both normal and shear loading is presented. Verification of the accuracy of the failure model is shown through comparisons between predictions and measured creep and multi-axial failure data. The verification indicates that the failure model performs well for a wide range of conditions (loading, temperature, and time) for the three adhesives. The failure criterion is shown to be accurate through the glass transition for the EA946 adhesive. Though this failure model has been developed and evaluated with adhesives, the concepts should be applicable for other isotropic materials.

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“…In torsion, axial symmetry removes the leading and trailing edges that cause eccentricities in lap shear. For applications with rigid adherends such as aluminum19 or steel,20, 21 annular specimens are conveniently machined and tested. Soft biological specimens are easily damaged and deform easily when cut into a circular strip with the proper geometry for the napkin ring test.…”

Section: Introductionmentioning

confidence: 99%

Measuring shear strength of soft‐tissue adhesives

Wang

Kornfield

2012

J Biomed Mater Res

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A method for evaluating strength of adhesives for hydrogels and soft tissues is presented. Quantitative measurements of shear strength for applications in tissue engineering and biomedicine are performed in torsion using a rheometer. Small, disk shaped specimens of soft biological tissues and/or hydrogels (8 mm diameter, 1-2 mm thick) are mounted onto rheometer tools and then bonded together using the adhesive to be tested. The torsional loading geometry imposes simple shear without deforming the planar adhesive bond, in contrast to the lap-shear test. It retains the advantages of the napkin ring test while reducing artifacts due to cutting and handling soft specimens. The method is demonstrated by measuring the shear strength of two types of biomedical adhesives (cyanoacrylate and polyethylene glycol-based) between model hydrogels (gelatin) and tissues (corneal stroma and skin).

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The measurement of the shear strength of adhesive joints in torsion

Cited by 30 publications

References 1 publication

Strength and Interface Adhesion Properties of in-Plane Shear Loaded Thick Adhesive Joint

Strength and Interface Adhesion Properties of in-Plane Shear Loaded Thick Adhesive Joint

Evaluation of a Multi-Axial, Temperature- and Time- Dependent Failure Mode

Measuring shear strength of soft‐tissue adhesives

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