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Mostrando ítems 1-10 de 23
Artículo
Design for a cruciform coupon used for tensile biaxial transverse tests on composite materials
(Elsevier, 2017-06)
This paper focuses on the design of the appropriate geometry for cruciform coupons conceived to be tested under tensile biaxial transverse loads. To this end, Finite Element models were developed and their results were ...
Artículo
A study of the reproducibility and reliability of the musculo-articular stiffness of the ankle joint
(Elsevier, 2018-06)
The objective of this work was to evaluate the reproducibility, reliability and usefulness of the musculo-articular stiffness (MAS) of the ankle joint, measuring it by the free vibration technique. Seventeen (nine males ...
Artículo
Failure initiation criterion in bonded joints with composites based on singularity parameters and practical procedure for design purposes
(Tailor & Francis, 2015)
Composite to metal adhesively bonded joints generates critical points where geometry and material properties change abruptly. These points (multimaterial corners) are potential locations for failure initiation. There exist ...
Artículo
Premature failures in standard test specimens with composite materials induced by stress singularities in adhesive joints
(Elsevier, 2020-03)
This work presents three examples of standard test configurations, involving composite materials, where the presence of stress singularities induced by adhesive joints causes premature failures leading to underestimated ...
Artículo
On the optimal choice of fibre orientation angle in off-axis tensile test using oblique end-tabs: Theoretical and experimental studies
(Elsevier, 2019-07)
Shear strength evaluation in composite materials still remains a not fully solved problem. One of most promising proposals to characterise a material in shear by means of a simple tensile test is the off-axis tension test ...
Artículo
Experimental observations of fatigue damage in cross-ply laminates using carbon/epoxy ultra-thin plies
(Elsevier, 2023-02-15)
The damage mechanisms of cross-ply laminates under fatigue loading have been deeply studied during last years. In the case of quasi-static loads the so-called scale effect has recently acquired renewed importance after the ...
Artículo
Tensile and shear strength of bimaterial interfaces within composite materials
(Elsevier, 2016-03)
The determination of the tensile and shear strengths of homogeneous materials can be easily performed by standard tensile and shear (e.g. Iosipescu) tests. Nevertheless, when the determination of these strengths involves ...
Artículo
Non-conventional failures caused by the edge effect in cross-ply laminates made of ultra-thin plies
(Elsevier, 2023)
In a fatigue testing programme of carbon/epoxy cross-ply laminates made of ultra-thin plies, non-conventional failures are observed. These non-conventional failures consist in longitudinal cracks in the 90◦ layer parallel ...
Artículo
Singularity parameter determination in adhesively bonded lap joints for use in failure criteria
(Elsevier, 2008)
A procedure for the singularity characterization of anisotropic multimaterial corners which typically appear in adhesively bonded lap joints between metals and composites is presented and implemented in the present work. ...
Artículo
Fatigue life of unidirectional 90° carbon/epoxy laminates made of conventional and ultra-thin plies varying manufacturing and testing conditions
(John Wiley & Sons Ltd., 2023)
Unidirectional 90° laminates (UD-90) have been tested under tension–tension loading (R = 0.1) to comprehend the effect of different conditions on their fatigue life. Four different case studies have been evaluated: the ...