%0 Journal Article
%T Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers
%+ Sciences et Ingénierie de la Matière Molle (UMR 7615) (SIMM)
%+ University of Texas at Austin [Austin]
%+ Laboratoire Charles Coulomb (L2C)
%+ Institut universitaire de France (IUF)
%+ Sibley School of Mechanical and Aerospace Engineering (MAE)
%+ Hokkaido University [Sapporo, Japan]
%+ Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris)
%A Ju, Jianzhu
%A Sanoja, Gabriel
%A Nagazi, Med Yassine
%A Cipelletti, Luca
%A Liu, Zezhou
%A Hui, Chung Yuen
%A Ciccotti, Matteo
%A Narita, Tetsuharu
%A Creton, Costantino
%Z This work was funded by the European Union’s Horizon 2020 Programme for Research and Innovation under the Marie Skłodowska-Curie grant agreement no. 765811 (DoDyNet) and grant agreement AdG no. 695351 (CHEMECH). This work was partially supported by ANRT (grant no. 2014/0109) and ANR MultiNet (grant no. ANR-20-CE06-0028-01). LC gratefully acknowledges support from the Institut Universitaire de France.
%< avec comité de lecture
%@ 2160-3308
%J Physical Review X
%I American Physical Society
%V 13
%N 2
%P 021030
%8 2023-05
%D 2023
%R 10.1103/PhysRevX.13.021030
%Z Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]Journal articles
%X The fracture of materials can take place below the critical failure condition via the slow accumulation ofinternal damage followed by fast crack propagation. While failure due to subcritical fracture accounts formost of the structural failures in use, it is theoretically challenging to bridge the gap between moleculardamage and fracture mechanics, not to mention predicting the occurrence of sudden fracture, due to thelack of current nondestructive detection methods with suitable resolution. Here, we investigate the fractureof elastomers by using simultaneously space- and time-resolved multispeckle diffusing wave spectroscopy(MSDWS) and molecular damage mapping by mechanophore. We identify a fracture precursor thataccelerates the strain-rate field over a large area (cm2 scale), at considerably long times (up to thousands ofseconds) before macroscopic fracture occurs. By combining deformation or damage mapping and finiteelementsimulations of the crack-tip strain field, we unambiguously attribute the macroscopic responsein elastic deformation to highly localized molecular damage that occurs over a sample area of about0.01 mm2. By unveiling this mechanism of interaction between the microscopic molecular damage and theminute but long-ranged elastic deformation field, we are able to develop MSDWS as a flexible, wellcontrolledtool to characterize and predict microscopic damage well before it becomes critical. Tested usingordinary imaging and simple image processing, MSDWS predictions are proven applicable for unlabeledand even opaque samples under different fracture conditions.
%G English
%2 https://hal.science/hal-04242193/document
%2 https://hal.science/hal-04242193/file/PRX%20paper.pdf
%L hal-04242193
%U https://hal.science/hal-04242193
%~ ESPCI
%~ CNRS
%~ PARISTECH
%~ L2C
%~ SIMM
%~ INC-CNRS
%~ PSL
%~ UNIV-MONTPELLIER
%~ SORBONNE-UNIVERSITE
%~ SORBONNE-UNIV
%~ SU-SCIENCES
%~ ESPCI-PSL
%~ SU-TI
%~ ANR
%~ ALLIANCE-SU
%~ UM-2015-2021
%~ UM-EPE
%~ CHIMIE-SU