โ Scribed by Xie Heping; David J. Sanderson; D.C.P. Peacock
No coin nor oath required. For personal study only.
show that en echelon fractures within fracture zones have a Riedel within Riedel structure. The tensile failure mechanism of formation of en echelon fractures can be described by the pile-ups of shear crack-dislocations.
A fractal model can be used to simulate the Riedel within Riedel geometry, allowing the direct measurement of the fractal dimensions of en echelon fracture systems. The energy dissipation of the en echelon fracture system can be deduced using a fractal damage evolution model which explains the evolution process of the system. The fractal nature of the fractures can be used to derive an accurate estimate of total energy dissipation.
๐ SIMILAR VOLUMES
Upon irradiation, 5-dicyanomethylenebicyclo[2.2.2]octene (2) gives a highly strained compound, 2,2-dicyanotricyclo[4.2.1.01'3]nonene (6) in good yield. Of additional interest is the observation that the starting material 3 can be quantitatively regenerated from the photoproduct 6 with release of 28.