Open AccessThe Stress around a Fault according to a Photoelastic Model Experiment
Author(s) -
Duda Seweryn J.
Publication year - 1965
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1965.tb03893.x
Subject(s) - aftershock , stress field , geology , photoelasticity , seismology , fault (geology) , field (mathematics) , stress (linguistics) , shear stress , shear (geology) , mechanics , geometry , structural engineering , materials science , physics , mathematics , engineering , composite material , petrology , linguistics , philosophy , finite element method , pure mathematics , solid mechanics
Summary A report is given of preliminary photoelastic measurements of the two‐dimensional stress field around a fault or crack in a plate. The measurements include the following cases: open slit with the uniaxial applied pressure field making an angle of 45|Mo with the slit; closed slit (zone of weakness) with two different thicknesses of the weak zone and again 45|Mo to the external pressure field; the measurements for the weakest slit were made also with an angle of 22.5|Mo to the pressure field. The determined normal and shear stresses are represented in graphical form. The results provide explanations for some earthquake characteristics, for example distribution of shear stress and patterns of geographical extension of seismic activity during an aftershock sequence.