Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers
The fracture of materials can take place below the critical failure condition via the slow accumulation of internal damage followed by fast crack propagation. While failure due to subcritical fracture accounts for most of the structural failures in use, it is theoretically challenging to bridge the...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2023-05-01
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| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.13.021030 |
| _version_ | 1827940689516691456 |
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| author | Jianzhu Ju Gabriel E. Sanoja Med Yassine Nagazi Luca Cipelletti Zezhou Liu Chung Yuen Hui Matteo Ciccotti Tetsuharu Narita Costantino Creton |
| author_facet | Jianzhu Ju Gabriel E. Sanoja Med Yassine Nagazi Luca Cipelletti Zezhou Liu Chung Yuen Hui Matteo Ciccotti Tetsuharu Narita Costantino Creton |
| author_sort | Jianzhu Ju |
| collection | DOAJ |
| description | The fracture of materials can take place below the critical failure condition via the slow accumulation of internal damage followed by fast crack propagation. While failure due to subcritical fracture accounts for most of the structural failures in use, it is theoretically challenging to bridge the gap between molecular damage and fracture mechanics, not to mention predicting the occurrence of sudden fracture, due to the lack of current nondestructive detection methods with suitable resolution. Here, we investigate the fracture of elastomers by using simultaneously space- and time-resolved multispeckle diffusing wave spectroscopy (MSDWS) and molecular damage mapping by mechanophore. We identify a fracture precursor that accelerates the strain-rate field over a large area (cm^{2} scale), at considerably long times (up to thousands of seconds) before macroscopic fracture occurs. By combining deformation or damage mapping and finite-element simulations of the crack-tip strain field, we unambiguously attribute the macroscopic response in elastic deformation to highly localized molecular damage that occurs over a sample area of about 0.01 mm^{2}. By unveiling this mechanism of interaction between the microscopic molecular damage and the minute but long-ranged elastic deformation field, we are able to develop MSDWS as a flexible, well-controlled tool to characterize and predict microscopic damage well before it becomes critical. Tested using ordinary imaging and simple image processing, MSDWS predictions are proven applicable for unlabeled and even opaque samples under different fracture conditions. |
| first_indexed | 2024-03-13T09:14:14Z |
| format | Article |
| id | doaj.art-7ab77651772d4a8d9dfee902a377954f |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-03-13T09:14:14Z |
| publishDate | 2023-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-7ab77651772d4a8d9dfee902a377954f2023-05-26T14:03:29ZengAmerican Physical SocietyPhysical Review X2160-33082023-05-0113202103010.1103/PhysRevX.13.021030Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft ElastomersJianzhu JuGabriel E. SanojaMed Yassine NagaziLuca CipellettiZezhou LiuChung Yuen HuiMatteo CiccottiTetsuharu NaritaCostantino CretonThe fracture of materials can take place below the critical failure condition via the slow accumulation of internal damage followed by fast crack propagation. While failure due to subcritical fracture accounts for most of the structural failures in use, it is theoretically challenging to bridge the gap between molecular damage and fracture mechanics, not to mention predicting the occurrence of sudden fracture, due to the lack of current nondestructive detection methods with suitable resolution. Here, we investigate the fracture of elastomers by using simultaneously space- and time-resolved multispeckle diffusing wave spectroscopy (MSDWS) and molecular damage mapping by mechanophore. We identify a fracture precursor that accelerates the strain-rate field over a large area (cm^{2} scale), at considerably long times (up to thousands of seconds) before macroscopic fracture occurs. By combining deformation or damage mapping and finite-element simulations of the crack-tip strain field, we unambiguously attribute the macroscopic response in elastic deformation to highly localized molecular damage that occurs over a sample area of about 0.01 mm^{2}. By unveiling this mechanism of interaction between the microscopic molecular damage and the minute but long-ranged elastic deformation field, we are able to develop MSDWS as a flexible, well-controlled tool to characterize and predict microscopic damage well before it becomes critical. Tested using ordinary imaging and simple image processing, MSDWS predictions are proven applicable for unlabeled and even opaque samples under different fracture conditions.http://doi.org/10.1103/PhysRevX.13.021030 |
| spellingShingle | Jianzhu Ju Gabriel E. Sanoja Med Yassine Nagazi Luca Cipelletti Zezhou Liu Chung Yuen Hui Matteo Ciccotti Tetsuharu Narita Costantino Creton Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers Physical Review X |
| title | Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers |
| title_full | Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers |
| title_fullStr | Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers |
| title_full_unstemmed | Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers |
| title_short | Real-Time Early Detection of Crack Propagation Precursors in Delayed Fracture of Soft Elastomers |
| title_sort | real time early detection of crack propagation precursors in delayed fracture of soft elastomers |
| url | http://doi.org/10.1103/PhysRevX.13.021030 |
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