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Photoelastic method of three‐dimensional stress determination around axisymmetric inclusions
Author(s) -
Pawlak Andrzej,
Galeski Andrzej
Publication year - 1996
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10673
Subject(s) - photoelasticity , rotational symmetry , materials science , tensor (intrinsic definition) , stress (linguistics) , cauchy stress tensor , optics , matrix (chemical analysis) , composite material , mechanics , geometry , mathematical analysis , solid mechanics , mathematics , physics , linguistics , philosophy
Using Aben's approach to three‐dimensional photoelasticity, a method for the determination of the stress tensor in a transparent matrix around an isolated axisymmetric inclusion is detailed. The method is useful for studies on a microscopic scale, the inclusion preferably above 10 to 20 µm in diameter, especially when the total retardation is below the first fringe order of isochrom. The polarization and phase data for normal and oblique light beams are necessary for full determination of the stress tensor, including the information on pressure. The analysis is nondestructive of the composite material studied.