Dynamic stress corrosion cracking in silicon crystal
| Autor: | Merna Shaheen-Mualim, Anna Gleizer, Dov Sherman |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Strain energy release rate
Physics Condensed matter physics Computational Mechanics Cleavage (crystal) Fracture mechanics 02 engineering and technology Crystal structure 01 natural sciences Thermal expansion 010101 applied mathematics Monocrystalline silicon 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Modeling and Simulation Free surface 0101 mathematics Stress corrosion cracking |
| Zdroj: | International Journal of Fracture. 219:161-174 |
| ISSN: | 1573-2673 0376-9429 |
| Popis: | We investigated, experimentally, the stress corrosion cracking (SCC) phenomenon in dynamic cracks propagating on two low energy cleavage systems (LECSs) of silicon crystal, (111)[ $$11\,\bar{{2}}$$ ] and (110)[ $$1\,\bar{{1}}\,0$$ ], under air and under Ar at atmospheric pressure. We used our high resolution Coefficients of Thermal Expansion Mismatch (CTEM) method to initiate and propagate the cracks. An important variable in this investigation was the gradient of the energy release rate (ERR) flow to the crack front for unit length of crack advance, $$dG_{0}/da$$ , denoted $$\varTheta $$ , in units of $$\hbox {J}/\hbox {m}^{2}/\hbox {mm}$$ . The CTEM method is capable of manipulating the value of $$\varTheta $$ . When loaded by low ERR gradient, e.g., when $$\varTheta |
| Databáze: | OpenAIRE |
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