Experimental and numerical evaluation of the effects of interaction between multiple small holes and a single notch on the mechanical behavior of artificial gypsum specimens

Abharian, S; Sarfarazi, V; Marji, MF; Rasekh, H

Experimental and numerical evaluation of the effects of interaction between multiple small holes and a single notch on the mechanical behavior of artificial gypsum specimens

Abharian, S Sarfarazi, V Marji, MF Rasekh, H

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Theoretical and Applied Fracture Mechanics, 2022, 121, pp. 103462
Issue Date:: 2022-10-01

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Field	Value	Language
dc.contributor.author	Abharian, S
dc.contributor.author	Sarfarazi, V
dc.contributor.author	Marji, MF
dc.contributor.author	Rasekh, H https://orcid.org/0000-0003-2064-0753
dc.date.accessioned	2023-04-11T03:40:53Z
dc.date.available	2023-04-11T03:40:53Z
dc.date.issued	2022-10-01
dc.identifier.citation	Theoretical and Applied Fracture Mechanics, 2022, 121, pp. 103462
dc.identifier.issn	0167-8442
dc.identifier.uri	http://hdl.handle.net/10453/169550
dc.description.abstract	The mechanical behavior of cubic gypsum specimens containing five small circular holes in a linear configuration and a single notch under uniaxial compression test were studied to evaluate interactions between these flaws during crack development under loading. Multiple angles between the line of holes and the horizontal axis were evaluated (15°, 45°, and 75°), as were different notch apertures (2, 4, 6 and 8 mm). Acoustic emission (AE) data were used to evaluate the fracture development process in each case. Following the experiments, numerical simulations of the tests were conducted using the particle flow code (PFC2D). The compressive strengths of the specimens were found to be associated with the failure mechanism and fracturing geometry, which were in turn controlled by the geometric attributes of the flaws considered. The compressive strength of specimens were affected by the number of tensile cracks. The induced tensile cracked number were increased by decreasing the joint length. Only few AE events were detected in the initial phase of loading, but then AE hits grew rapidly prior to reaching the peak stress. The AE hits increased by increasing the filling thickness. Failure pattern and compressive strength of specimens were nearly similar in both numerical and experimental approaches.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Theoretical and Applied Fracture Mechanics
dc.relation.isbasedon	10.1016/j.tafmec.2022.103462
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0102 Applied Mathematics, 0905 Civil Engineering, 0913 Mechanical Engineering
dc.subject.classification	Mechanical Engineering & Transports
dc.title	Experimental and numerical evaluation of the effects of interaction between multiple small holes and a single notch on the mechanical behavior of artificial gypsum specimens
dc.type	Journal Article
utslib.citation.volume	121
utslib.for	0102 Applied Mathematics
utslib.for	0905 Civil Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-04-11T03:40:49Z
pubs.publication-status	Published
pubs.volume	121

Abstract:

The mechanical behavior of cubic gypsum specimens containing five small circular holes in a linear configuration and a single notch under uniaxial compression test were studied to evaluate interactions between these flaws during crack development under loading. Multiple angles between the line of holes and the horizontal axis were evaluated (15°, 45°, and 75°), as were different notch apertures (2, 4, 6 and 8 mm). Acoustic emission (AE) data were used to evaluate the fracture development process in each case. Following the experiments, numerical simulations of the tests were conducted using the particle flow code (PFC2D). The compressive strengths of the specimens were found to be associated with the failure mechanism and fracturing geometry, which were in turn controlled by the geometric attributes of the flaws considered. The compressive strength of specimens were affected by the number of tensile cracks. The induced tensile cracked number were increased by decreasing the joint length. Only few AE events were detected in the initial phase of loading, but then AE hits grew rapidly prior to reaching the peak stress. The AE hits increased by increasing the filling thickness. Failure pattern and compressive strength of specimens were nearly similar in both numerical and experimental approaches.

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http://hdl.handle.net/10453/169550