An investigation of the load-transfer mechanism in carbon fiber-reinforced polymer (CFRP) ground anchors with multi-strap ends was conducted based on experimental and numerical studies of one- and two-strap anchors. Differences in the strap geometry, i.e. ...

Elsevier2018

Numerical simulation of two-dimensional crack propagation

Thomas Keller, Anastasios Vassilopoulos, Aida Cameselle Molares

A numerical investigation was carried out to simulate the experimental results previously obtained concerning two-dimensional in-plane crack propagation in laminated glass fiber-reinforced polymer (GFRP) plates. The plates were designed with an embedded ci ...

2018

The JET Upgraded Toroidal Alfvén Eigenmode Active Diagnostic System

Thomas Keller

2018

Effects of load interruption on the fatigue life of GFRP composites

Thomas Keller, Anastasios Vassilopoulos, Abdolvahid Movahedirad

The effect of cyclic loading interruption on the fatigue behavior of angle-ply (±45)2S glass/epoxy composite laminates was investigated by comparing the obtained results of continuous- and interrupted loading patterns. Continuous fatigue experiments were p ...

2018

Finite element analysis of initial imperfection effects on kinking failure of unidirectional glass fiber-reinforced polymer composites

Thomas Keller, Anastasios Vassilopoulos, Wei Sun

The compressive kinking behavior of non-slender unidirectional glass fiber-reinforced polymer (GFRP) specimens has been analyzed by finite element (FE) models. The experimentally observed imperfections, including the initial fiber waviness throughout the e ...

ELSEVIER SCI LTD2018

Generalized resolution matrix for neutron spin-echo three-axis spectrometers

Thomas Keller, Felix Groitl

This article describes the energy resolution of spin-echo three-axis spectrometers (SE-TASs) by a compact matrix formalism. SE-TASs allow one to measure the line widths of elementary excitations in crystals, such as phonons and magnons, with an energy reso ...

INT UNION CRYSTALLOGRAPHY2018

Numerical simulation of two-dimensional in-plane crack propagation in FRP laminates

Thomas Keller, Anastasios Vassilopoulos, Aida Cameselle Molares

A numerical investigation was carried out in order to simulate experimental results previously obtained concerning two-dimensional (2D) in-plane crack propagation in laminated glass fiber-reinforced polymer (GFRP) plates. The laminated plates were designed ...

2018

Effect of stress ratios on tension-tension fatigue behavior and micro-damage evolution of basalt fiber-reinforced epoxy polymer composites

Thomas Keller, Anastasios Vassilopoulos, Xing Zhao, Xi Wang

2018

Numerical modelling of the thermal response of pultruded GFRP tubular profiles subjected to fire

Thomas Keller

2018

Experimental investigation of two-dimensional delamination in GFRP laminates

Thomas Keller, Anastasios Vassilopoulos, Aida Cameselle Molares

The 2D delamination behavior of composite laminates under quasi-static out-of-plane opening loading has been experimentally investigated. A circular embedded pre-crack was introduced in the center and at the midplane of the laminates. To investigate the ef ...

2018

Novel experimental design for two-dimensional delamination in FRP laminates

Thomas Keller, Anastasios Vassilopoulos, Aida Cameselle Molares

The two-dimensional (2D) delamination behavior of composite laminates under quasi-static out-of-plane opening loads has been experimentally investigated. A novel design and experimental set-up for fiber-reinforced polymer (FRP) laminated plates with a circ ...

2018

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Thomas Keller

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Mixed-mode quasi-static fracture behavior of GFRP/balsa sandwiches

Ductile adhesively-bonded timber joints - Part 2: Strain rate effect

Long-term design of GFRP-PUR web-core sandwich structures

Load transfer mechanisms in CFRP ground anchors with multi-strap ends

Numerical simulation of two-dimensional crack propagation

The JET Upgraded Toroidal Alfvén Eigenmode Active Diagnostic System

Effects of load interruption on the fatigue life of GFRP composites

Finite element analysis of initial imperfection effects on kinking failure of unidirectional glass fiber-reinforced polymer composites

Generalized resolution matrix for neutron spin-echo three-axis spectrometers

Numerical simulation of two-dimensional in-plane crack propagation in FRP laminates

Effect of stress ratios on tension-tension fatigue behavior and micro-damage evolution of basalt fiber-reinforced epoxy polymer composites

Numerical modelling of the thermal response of pultruded GFRP tubular profiles subjected to fire

Experimental investigation of two-dimensional delamination in GFRP laminates

Novel experimental design for two-dimensional delamination in FRP laminates

Two-dimensional crack propagation in GFRP laminates: Experimental investigation

Interrupted tension-tension fatigue behavior of angle-ply GFRP composite laminates

2D quasi-static delamination in GFRP laminates: numerical investigation

2D quasi-static delamination in GFRP laminates: experimental investigation

Mechanical properties of a Balsa wood veneer core material at elevated temperatures

Numerical and analytical investigation of tensile behavior of non-laminated and laminated CFRP straps