Premium
Photographic evaluation techniques in photoelasticity—Part 2
Author(s) -
Meyer M. L.,
Mehrotra L.
Publication year - 1986
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1986.tb00609.x
Subject(s) - line (geometry) , photoelasticity , order (exchange) , calibration , line drawings , optics , mathematics , white (mutation) , physics , engineering drawing , geometry , mathematical analysis , engineering , chemistry , statistics , biochemistry , finance , cauchy stress tensor , economics , gene
In Part 1, boundaries between black and white on high contrast photographs (e.g. Fig. 10) and lines on Agfacontour photographs (e.g. Fig. 15) have both been called E‐lines. On any given photograph of isochromatics, each E‐line denotes a specific fractional fringe order N = N i |δN|, with integer orders Nit and all E‐lines have the same fractional order modulus. |δN| (0 ≤ |δN| ≤ 1/2). Exposure or processing changes lead to photographs with different E‐lines and |δN| values. Part 2 treats evaluation and calibration of isochromatic E‐lines, gives examples and notes on illustrations of Part 1, discusses applications to isoclinics, and summarises some main features.