Publication
A novel fatigue life prediction methodology based on energy dissipation in viscoelastic materials, synergistic effects of stress level, stress ratio, and temperature
Publications associées (53)
A novel fatigue life prediction methodology based on energy dissipation in viscoelastic materials
Thomas Keller, Ghazaleh Eslami
This paper introduces a new fatigue life prediction methodology for viscoelastic materials in the tension-tension fatigue loading region. The model was established based on the total amount of energy dissipated during fatigue loading, and offers two main a ...
ELSEVIER SCI LTD2021Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
Anastasios Vassilopoulos, José Manuel de Sena Cruz
This paper investigates the effects of degassing, curing and post-curing conditions on the tensile quasi-static and fatigue behavior of a cold-curing structural epoxy adhesive. Quasi-static experiments performed at standardized and high displacement rates ...
2020Load history effects in fibre-reinforced polymer composite materials
Today, it is widely accepted that fatigue is one of the most common failure mechanisms in structural components, and pure static failure is rarely observed. Engineering structures are subjected to complex mechanical fatigue loading histories, which cause d ...
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 LTD2019Temperature effect on fatigue behavior of basalt fiber-reinforced polymer composites
Thomas Keller, Anastasios Vassilopoulos, Xing Zhao, Xin Wang
In this study, the temperature effect on the static and tension–tension fatigue behavior of basalt fiber‐reinforced epoxy polymer (BFRP) composites is investigated. The S–N curves, energy dissipation, stiffness degradation, and displacement increment with ...
Wiley2019Creep and stress relaxation of a FeMnSi-based shape memory alloy at low temperatures
Cyril Cayron, Christian Leinenbach
The creep and stress relaxation behavior of a Fe-17Mn-5Si-10Cr-4Ni-1(V,C) (wt%) shape memory alloy at low homologous temperatures (-45 degrees C < T < 50 degrees C) was systematically studied in stress and strain controlled tensile tests. At constant stres ...
Elsevier2016Nanocrystalline metals: transient testing during in situ X-ray diffraction and molecular dynamics
Nanocrystalline (NC) metals have attracted widespread interest in materials science due to their high strength compared to coarse-grained counterparts. It is well know that during uniaxial deformation, the stress-strain behaviour exhibits an extraordinary ...
EPFL2016Modelling of current and temperature effects on supercapacitors ageing. Part II: State-of-Health assessment
Mario Paolone, Dimitri Torregrossa
This second part of the paper proposes a model for predicting the State-of-Health (SOH) of electrochemical double layers supercapacitors (SCs) during combined high-pulsed power cycling and high-temperature life endurance stresses. The evolutions of the SC ...
Elsevier Science Bv2016Laminated Connections for Structural Glass Applications
The demand for architectural transparency has drastically increased structural use of glass in buildings and constructions. Connections between structural glass components represent one of the main critical aspects of glass engineering. In the last years, ...
EPFL2015Design 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 ...
Elsevier2015