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Damage accumulation during cyclic loading of a continuous alumina fibre reinforced aluminium composite
Related publications (40)
A novel fatigue life prediction methodology based on energy dissipation in viscoelastic materials, synergistic effects of stress level, stress ratio, and temperature
Thomas Keller, Lulu Liu, Abdolvahid Movahedirad
This work introduces a new methodology to predict the fatigue life of viscoelastic materials by considering the creep effect on fatigue behavior under the concurrent effects of stress level, stress ratio, and temperature. The model established based on the ...
2024Experimental quantification of 3D deformations in sensitive clay during stress-probing
Unique four-dimensional (4D) deformation data are collected during drained triaxial tests on intact specimens of a natural sensitive clay. This requires the development of a miniature triaxial cell for advanced stress path testing, specifically designed fo ...
ICE PUBLISHING2022Two-dimensional crack growth in FRP laminates and sandwich panels
Fiber-reinforced polymer (FRP) composite materials are currently being selected for the design of lightweight and efficient structural members in a wide number of engineering applications. Sandwich panels with glass fiber-reinforced polymer (GFRP) face she ...
EPFL2019Stress ratio effect on tension-tension fatigue behavior of angle-ply GFRP laminates
Thomas Keller, Anastasios Vassilopoulos
The effect of the stress ratio (R = sigma(min)/sigma(max)) on the fatigue behavior of (+/- 45)(2s) angle-ply glass/epoxy composite laminates was investigated by comparing their mechanical, thermal, and optical properties under the stress ratio of 0.5 with ...
ELSEVIER SCI LTD2019Creep-fatigue interaction in composite materials
Thomas Keller, Anastasios Vassilopoulos, Abdolvahid Movahedirad
A novel phenomenological model taking into account the creep-fatigue interaction in composite materials’ fatigue performance is introduced in this paper. The model is based on the derivation of a master curve by using existing experimental fatigue data fro ...
2016Specimen thickness dependence of large scale fiber bridging in mode I interlaminar fracture of carbon epoxy composite
John Botsis, Joël Cugnoni, Ebrahim Farmand Ashtiani
Large scale bridging is an important toughening mechanism in composite laminates that depends on the specimen geometry as well as the constituent materials. In this work, an iterative approach is applied to identify the effect of specimen thickness on trac ...
Elsevier2015Design criterion for fatigue strengthening of riveted beams in a 120-year-old railway metallic bridge using pre-stressed CFRP plates
Alain Nussbaumer, Gary Scott Prinz, Andrin Herwig, Elyas Ghafoori
This study presents a design criterion developed for fatigue strengthening of a 120-year-old metallic railway bridge in Switzerland and presents a pre-stressed un-bonded reinforcement (PUR) system developed to apply the strengthening. The PUR system uses c ...
Elsevier2015Limit states of modern unreinforced clay brick masonry walls subjected to in-plane loading
Recent research showed that the in-plane horizontal displacement capacity of unreinforced masonry (URM) walls depends on numerous factors that are not yet captured by current empirical drift capacity models; e.g., axial stress, shear span, geometry of the ...
Springer Verlag2015Matrix cracking of fiber-reinforced ceramic composites in shear
The mechanics of cracking in fiber-reinforced ceramic matrix composites (CMCs) under general loadings remains incomplete. The present paper addresses one outstanding aspect of this problem: the development of matrix cracks in unidirectional plies under she ...
Elsevier2014Failure of Ceramic Composites in Non-Uniform Stress Fields
Continuous-fiber ceramic matrix composites (CMCs) are of interest as hot-section components in gas turbine engines due to their refractoriness and low density relative to metallic alloys. In service, CMCs will be subjected to spatially inhomogeneous temper ...
University of California Santa Barbara2014