Premium
Evaluation of the strain energy density control volume for a nanoscale singular stress field
Author(s) -
Gallo P,
Sumigawa T,
Kitamura T,
Berto F
Publication year - 2016
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.12468
Subject(s) - nanoelectromechanical systems , materials science , microelectromechanical systems , strain energy density function , nano , nanoscopic scale , scale (ratio) , control volume , stress (linguistics) , volume (thermodynamics) , fracture (geology) , stress field , silicon , fracture mechanics , mechanical engineering , structural engineering , nanotechnology , composite material , engineering , mechanics , metallurgy , nanoparticle , finite element method , physics , nanomedicine , linguistics , philosophy , quantum mechanics
Fracture mechanics at micro‐ and nano‐scale has become a very attractive topic in the last years. However, the results are still few, mostly because of the lack of effective analytical tools and of the difficult to conduct experimental tests at those scales. In this study, the authors report preliminary analysis on the application of the Strain Energy Density (SED) method at nano‐scale. In detail, starting from mechanical properties experimentally evaluated on small single crystal silicon cracked specimens, a first evaluation of the control volume due to a nano‐size singular stress field is carried out. If the extension of the SED approach at micro‐ nano‐scale is given in near future, an easy and fast tool to design against fatigue will be provided for micro‐ nano‐devices such as MEMS and NEMS, resulting in a significant technological impact and providing an easy and fast tool to conduct static and fatigue assessment at micro‐ and nano‐scale.