%0 Conference Proceedings
%T Critical imaging parameters in time resolved digital image correlation (TRDIC): effect of optical blur during drop test on composite structures
%+ Durabilité des éco-Matériaux et Structures (DMS)
%+ EuroMov - Digital Health in Motion (Euromov DHM)
%A Boukar, Ahmed
%A Ienny, Patrick
%A Corn, Stéphane
%A Slangen, Pierre
%< avec comité de lecture
%( Proceedings of SPIE
%B SPIE Optical Metrology
%C Munich, Germany
%Y Joel Shields
%3 EOM21-OM101
%V 11782
%8 2021-06-21
%D 2021
%R 10.1117/12.2593708
%K high speed imaging
%K blur
%K exposure time
%K digital image correlation
%K drop test
%K composites
%Z Engineering Sciences [physics]/Materials
%Z Physics [physics]/Physics [physics]/Optics [physics.optics]Conference papers
%X High speed imaging is applied for drop test on composite samples. The effect of optical blur on image correlation accuracy is described. Blur magnitude is tuned by decreasing the exposure time (at constant sensor sensitivity) for the same drop test series on flyspecked composite plates, while focus, aperture and 1:1 magnification are kept constant. Frame rate (80-20kfps) and lighting are changed while keeping the same image contrast. Results show correlation quality is already altered with subpixel blur. This study enables to define blur criterion in high-speed imaging and completes study about sampling rate effect in time resolved image correlation by high-speed imaging.
%G English
%2 https://imt-mines-ales.hal.science/hal-03248381/document
%2 https://imt-mines-ales.hal.science/hal-03248381/file/11782-7-slangenFIN.pdf
%L hal-03248381
%U https://imt-mines-ales.hal.science/hal-03248381
%~ INSTITUT-TELECOM
%~ CNRS
%~ EM-ALES
%~ LMGC
%~ MIPS
%~ UNIV-MONTPELLIER
%~ INSTITUTS-TELECOM
%~ TEST-HALCNRS
%~ EUROMOV-DHM
%~ UM-2015-2021