Wire-bond Contact Degradation Modelling for Remaining Useful Lifetime Prognosis of IGBT Power Modules
ESREF 2020, 31st European Symposium on Reliability of Electron Devices, Failure Physics and Analysis, Athènes, GRECE, 05-/10/2020 - 07/10/2020
Remaining Useful Lifetime estimation for Electronic Power modules using an analytical degradation model
Power electronic modules undergo electro-thermal stresses due to power losses that lead to several kinds of degradations, and finally to failure. In order to prevent power electronic module failure, one should assess its state of health in realtime operation. For this purpose, Prognostics and Health Management (PHM) approach could be a promising to...
What is the influence of two strain rates on the relationship between human cortical bone toughness and micro-structure?...
Published in Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine
Cortical bone fracture mechanisms are well studied under quasi-static loading. The influence of strain rate on crack propagation mechanisms needs to be better understood, however. We have previously shown that several aspects of the bone micro-structure are involved in crack propagation, such as the complete porosity network, including the Haversia...
Investigation of Crack Propagation in Asphalt Pavement Based on APT Result and LEFM Analysis
When reinforcing existing cracked asphalt pavements, the design and evaluation of the durability of the reinforced structure are quite different from those of a new pavement generally based on fatigue criteria deduced from stress and strain fields computed for the undamaged pavement. For the design of reinforcement solutions, the presence of cracks...
Robust characterization of crack propagation in 3D woven composites and evidences of size dependency
The failure of fibers inside the yarns of 3D woven carbon/epoxy composites is investigated experimentally by estimating the critical energy release rate GC, through the analysis of Compact Tension (CT) and Single Edge Notched Beam (SENB) specimens. Close attention is paid to the specimen design as well as the tracking of the crack growth. Several d...
Effect of the amount and temperature of prestrain on tensile and low-cycle fatigue properties of Fe-17Mn-0.5C TRIP/TWIP ...
A high-Mn austenitic steel represents excellent combination of tensile strength and ductility, but shows very low yield strength. To increase the yield strength, pre-deformation is applied before use. However, the other properties such as fatigue resistance should also remain high. In this study the influence of pre-strain on tensile and low cycle ...
Influence of reinforcement type on macrocrack propagation under sustained loading in steel fibre-reinforced concrete
Characterization of macrocrack propagation under sustained loading in steel fibre reinforced concrete
Published in Materials and Structures
Preoccupation for improving concrete infrastructure durability has become just as important as safety issues and concrete cracking plays a key role for durability. Despite various studies carried out in the last decade, very little information regarding the propagation of cracking under sustained loading and the physical mechanisms involved is avai...
Discrete element modeling of crack propagation in weak snowpack layers
Dry-snow slab avalanches are generally caused by a sequence of fracture processes including (1) failure initiation in a weak snow layer underlying a cohesive slab, (2) crack propagation within the weak layer and (3) tensile fracture through the slab which leads to its detachment. During the past decades, theoretical and experimental work has gradua...
Measurement and characterization of thermo-mechanical fatigue in compacted graphite iron
