Extending the Modified Transverse Crack Tensile test for Mode II Fracture Toughness Characterisation of Hybrid Interfaces

Scalici, Tommaso; Dalli, Denis; Ullah, Zahur; Catalanotti, Giuseppe

Abstract

Measuring mode II fracture toughness at a dissimilar interface using the Transverse Crack Tensile may be challenging, particularly if geometric and elastic symmetry conditions are not maintained during crack propagation. Building on previous results, the authors propose to extend the modified Transverse Crack Tensile test setup to hybrid interfaces. A preliminary parametric calibration was carried out to determine key design parameters. The proposed method was experimentally validated through mechanical testing with the assistance of DIC to evaluate the full-field strain. A Finite Element model was appropriately implemented to study the extension of potential plastic zones. The results obtained for the chosen metal-composite interface demonstrate that the proposed test setup can be successfully extended to hybrid interfaces, confirming its robustness. Additionally, guidelines for the design of the test samples are provided.

Citation

Scalici, T., Dalli, D., Ullah, Z., & Catalanotti, G. (online). Extending the Modified Transverse Crack Tensile test for Mode II Fracture Toughness Characterisation of Hybrid Interfaces. Composites Part B: Engineering, Article 112063. https://doi.org/10.1016/j.compositesb.2024.112063

• Journal Article Type: Article
• Acceptance Date: Dec 2, 2024
• Online Publication Date: Dec 4, 2024
• Deposit Date: Dec 6, 2024
• Publicly Available Date: Dec 6, 2024
• Journal: Composites Part B: Engineering
• Print ISSN: 1359-8368
• Electronic ISSN: 1879-1069
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Article Number: 112063
• DOI: https://doi.org/10.1016/j.compositesb.2024.112063
• Public URL: https://durham-repository.worktribe.com/output/3202146