Publication
Fracture toughness master-curve analysis of the tempered martensitic steel Eurofer97
Related publications (33)
Fracture toughness measurement in fused quartz using triangular chevron-notched micro-cantilevers
Andreas Mortensen, Goran Zagar, Martin Guillermo Mueller, Václav Pejchal, Lionel Michelet
We extend to flat surfaces the fracture toughness method presented in Acts Materialia vol. 86 (2015) p.385 and measure in this manner the fracture toughness of fused quartz. Tests give 0.67 +/- 0.01 MPa m(1/2) which agrees with earlier microscopic and macr ...
Elsevier2016Fracture toughness testing of nanocrystalline alumina and fused quartz using chevron-notched microbeams
Andreas Mortensen, Marco Cantoni, Goran Zagar, Martin Guillermo Mueller, Václav Pejchal
We show that chevron-notched samples offer an attractive approach to the measurement of fracture toughness in micron-scale samples of brittle materials and use the method to characterize quartz and nanocrystalline alumina. Focused ion beam milling is used ...
Elsevier2015On measuring fracture toughness under load control in the presence of slow crack growth
Andreas Mortensen, Goran Zagar, Martin Guillermo Mueller, Václav Pejchal, Aparna Singh
The influence of slow crack growth in ceramics on the measurement of their fracture toughness under steadily increasing controlled load (as is generally practiced in microscale testing) is analyzed to identify conditions under which the phenomenon can caus ...
Elsevier2015Probing the Strength and Fracture Toughness of Hard Second Phases at the Micron Scale
Andreas Mortensen, Marco Cantoni, Goran Zagar, Andreas Rossoll, Martin Guillermo Mueller, Václav Pejchal, Marta Fornabaio, Lionel Michelet
It is known that the mechanical properties of composite materials and alloys are influenced by the intrinsic mechanical properties of their reinforcements or second phases. It is however challenging to determine such local properties, given their small siz ...
2015Fracture in complex balsa cores of fiber-reinforced polymer sandwich structures
Thomas Keller, Anastasios Vassilopoulos, Julia De Castro San Roman Fest, Michael Osei-Antwi
Fracture in the complex balsa cores of fiber-reinforced polymer (FRP) sandwich beams was analyzed. The cores were composed of high- and low-density balsa layers separated by a circular adhesive interface or FRP arch. The balsa layers were cut from panels w ...
Elsevier2014Effect of warm pre-stressing on fracture toughness of Eurofer97 steel
Experiments and finite element simulations have been carried out to assess the warm pre-stressing effects on the effective fracture toughness of the high-chromium reduced activation tempered martensitic steel Eurofer97. The experiments have been conducted ...
Elsevier Science Sa2013A nanoscale mechanism of hydrogen embrittlement in metals
The embrittlement of metallic systems by hydrogen is a widespread phenomenon but the precise role of hydrogen in this process is not well understood and predictive mechanisms are not available. Here, a new model is proposed wherein hydrogen accumulation ar ...
2011Fracture and Fatigue of Adhesively-Bonded Fiber-Reinforced Polymer Structural Joints
Being good structural replacement for other conventional material, the pultruded glass fiber reinforced polymer (GFRP) profiles are being increasingly used in civil engineering structures. The connection between components is considered the most suspect ar ...
EPFL2010Fracture toughness of Al replicated foam
Andreas Mortensen, Etienne Combaz
Elastoplastic toughness testing of pure aluminium replicated foam is conducted following a J-procedure adapted from the ASTM E1820-08a standard using disc-shaped compact tension specimens. Tests cover a wide range of foam relative density V-m (10-24%). Res ...
Elsevier2010Finite element modeling and experimental study of brittle fracture in tempered martensitic steels for thermonuclear fusion applications
In this work we have studied brittle fracture in high-chromium reduced activation tempered martensitic steels foreseen as structural materials for thermonuclear fusion reactors. Developing the adequate materials that can withstand the severe irradiation co ...
EPFL2009