Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor method
This study investigates the fracture behavior of magnesium-based wood-like material (MWM) under three-point bending using digital image correlation (DIC). The load-displacement curve exhibits asymmetric nonlinearity, reflecting sequential elastic deformation, plastic hardening, and post-peak progres...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525006011 |
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| author | Chunjie Li Jun Cai Xingrong Chen Johnny F.I. Lam Hongniao Chen |
| author_facet | Chunjie Li Jun Cai Xingrong Chen Johnny F.I. Lam Hongniao Chen |
| author_sort | Chunjie Li |
| collection | DOAJ |
| description | This study investigates the fracture behavior of magnesium-based wood-like material (MWM) under three-point bending using digital image correlation (DIC). The load-displacement curve exhibits asymmetric nonlinearity, reflecting sequential elastic deformation, plastic hardening, and post-peak progressive softening. A novel Variation Factor Method (VFM) is proposed to quantify fracture process zone (FPZ) tip localization through displacement variation analysis. VFM achieves < 2.14 % deviation from conventional methods while significantly improving computational efficiency. The FPZ strain threshold εxx of MWM is determined as 2.1 × 10−3, AFPZ measures 315.02 mm2 at peak load and reaches a maximum value of 639.33 mm2 during post-peak damage progression. Plant fibers suppress crack propagation through a dual mechanism: plastic deformation dissipates energy within the FPZ, while elastic bridging redistributes stress, delaying post-peak degradation. These findings provide critical insights into multiscale damage mechanisms and offer a foundation for optimizing fracture-resistant quasi-brittle composites. |
| format | Article |
| id | doaj-art-b849c04c4a574b5f8b5d9558aca7d6a1 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-b849c04c4a574b5f8b5d9558aca7d6a12025-08-20T03:48:19ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0480310.1016/j.cscm.2025.e04803Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor methodChunjie Li0Jun Cai1Xingrong Chen2Johnny F.I. Lam3Hongniao Chen4Faculty of Humanities and Social Sciences, Macao Polytechnic University, Macao, China; Corresponding authors.Faculty of Humanities and Social Sciences, Macao Polytechnic University, Macao, China; School of Architecture and Electrical Engineering, Hezhou University, Hezhou, ChinaFaculty of Humanities and Social Sciences, Macao Polytechnic University, Macao, ChinaFaculty of Humanities and Social Sciences, Macao Polytechnic University, Macao, ChinaResearch Center of Space Structures, Guizhou University, Guiyang, China; Corresponding authors.This study investigates the fracture behavior of magnesium-based wood-like material (MWM) under three-point bending using digital image correlation (DIC). The load-displacement curve exhibits asymmetric nonlinearity, reflecting sequential elastic deformation, plastic hardening, and post-peak progressive softening. A novel Variation Factor Method (VFM) is proposed to quantify fracture process zone (FPZ) tip localization through displacement variation analysis. VFM achieves < 2.14 % deviation from conventional methods while significantly improving computational efficiency. The FPZ strain threshold εxx of MWM is determined as 2.1 × 10−3, AFPZ measures 315.02 mm2 at peak load and reaches a maximum value of 639.33 mm2 during post-peak damage progression. Plant fibers suppress crack propagation through a dual mechanism: plastic deformation dissipates energy within the FPZ, while elastic bridging redistributes stress, delaying post-peak degradation. These findings provide critical insights into multiscale damage mechanisms and offer a foundation for optimizing fracture-resistant quasi-brittle composites.http://www.sciencedirect.com/science/article/pii/S2214509525006011Magnesium-based wood-like materialDICThree-point bendingFPZVariation factor method |
| spellingShingle | Chunjie Li Jun Cai Xingrong Chen Johnny F.I. Lam Hongniao Chen Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor method Case Studies in Construction Materials Magnesium-based wood-like material DIC Three-point bending FPZ Variation factor method |
| title | Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor method |
| title_full | Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor method |
| title_fullStr | Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor method |
| title_full_unstemmed | Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor method |
| title_short | Quantifying fracture process zone evolution in magnesium-based wood-like material: Analysis based on digital image correlation and variation factor method |
| title_sort | quantifying fracture process zone evolution in magnesium based wood like material analysis based on digital image correlation and variation factor method |
| topic | Magnesium-based wood-like material DIC Three-point bending FPZ Variation factor method |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525006011 |
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