Open AccessDynamic optical studies in materials testing with spectral-domain polarization-sensitive optical coherence tomography
Author(s) -
David Stifter,
Elisabeth LeissHolzinger,
Zoltán Major,
Bernhard Baumann,
Michael Pircher,
Erich Götzinger,
Christoph K. Hitzenberger,
Bettina Heise
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.025712
Subject(s) - optical coherence tomography , materials science , optics , photoelasticity , polarization (electrochemistry) , optical fiber , nondestructive testing , tomography , composite material , physics , chemistry , quantum mechanics , solid mechanics
By combining dynamic mechanical testing with spectral-domain polarization-sensitive optical coherence tomography (SD-PS-OCT) performed at 1550 nm we are able to directly investigate for the first time changes within scattering technical materials during tensile and fracture tests. Spatially and temporally varying polarization patterns, due to defects and material inhomogeneities, were observed within bulk polymer samples and used to finally obtain--with the help of advanced image processing algorithms--quantitative maps of the evolving internal stress distribution. Furthermore, locally increased stress within fiber-reinforced composite materials was identified in situ with SD-PS-OCT to cause depolarizing sites of fiber-matrix debonding prior the onset of complete structural failure.