Mixed-mode fracture of compacted tailing soils. II: Crack properties from full-field displacement fields

Nan Zhang; Ahmadreza Hedayat; Héctor Gelber Bolaños Sosa; Néstor Tupa; Isaac Yanqui Morales

doi:10.1016/j.tafmec.2022.103707

Mixed-mode fracture of compacted tailing soils. II: Crack properties from full-field displacement fields

Nan Zhang, Ahmadreza Hedayat, Héctor Gelber Bolaños Sosa, Néstor Tupa, Isaac Yanqui Morales

Research output: Contribution to journal › Article › peer-review

Abstract

This paper deals with the acquisition of the crack evolution and propagation behaviors of the compacted tailing soils from full-field displacement fields by incorporating two-dimensional optical technique-digital image correlation (2D DIC). Meanwhile, the fracture properties, such as mode I+II fracture toughness were also measured and compared to the results obtained in Part I. Cracking properties, such as strain energy rate, cracking initiation angle, and size of critical distance were investigated from the perspective of full-field displacement field and compared to the classic fracture mechanics. It is more intuitive to recognize the mixed mode fracture properties of the compacted tailing soils under asymmetric loading conditions by using optical techniques in full-field displacement fields. This work largely enriched the database of the fracturing properties of compacted tailings soils.

Original language	English
Article number	103707
Journal	Theoretical and Applied Fracture Mechanics
Volume	124
DOIs	https://doi.org/10.1016/j.tafmec.2022.103707
State	Published - Apr 2023

Bibliographical note

Funding Information:
The financial support provided by the Universidad Nacional de San Agustín (UNSA) through the joint Center for Mining Sustainability with the Colorado School of Mines is highly acknowledged.

Publisher Copyright:
© 2022

Keywords

Asymmetric semi-circular bending tests
Compacted tailing soils
Digital image correlation
Mixed mode I/II fracture properties
Silty sandy soil

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10.1016/j.tafmec.2022.103707

Cite this

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title = "Mixed-mode fracture of compacted tailing soils. II: Crack properties from full-field displacement fields",

abstract = "This paper deals with the acquisition of the crack evolution and propagation behaviors of the compacted tailing soils from full-field displacement fields by incorporating two-dimensional optical technique-digital image correlation (2D DIC). Meanwhile, the fracture properties, such as mode I+II fracture toughness were also measured and compared to the results obtained in Part I. Cracking properties, such as strain energy rate, cracking initiation angle, and size of critical distance were investigated from the perspective of full-field displacement field and compared to the classic fracture mechanics. It is more intuitive to recognize the mixed mode fracture properties of the compacted tailing soils under asymmetric loading conditions by using optical techniques in full-field displacement fields. This work largely enriched the database of the fracturing properties of compacted tailings soils.",

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AU - Tupa, Néstor

AU - Yanqui Morales, Isaac

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Mixed-mode fracture of compacted tailing soils. II: Crack properties from full-field displacement fields

Abstract

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Keywords

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