Fracture of V-notched natural rubber composites used in heavy-duty tire tread

Goswami, Mohit, Sharma, Sujit, Roychowdhury, Soumya, Bordas, Stéphane P.A. ORCID: https://orcid.org/0000-0001-8634-7002 and Chattopadhyay, Santanu 2023. Fracture of V-notched natural rubber composites used in heavy-duty tire tread. Engineering Failure Analysis 150 , 107358. 10.1016/j.engfailanal.2023.107358

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Abstract

Natural rubber-based composites have proven efficacy as candidate materials for heavy-duty tire tread. The mechanical properties of these composites depend on the type of filler and their loading; thus, a comparative investigation of material properties was carried out in this study for carbon black and silica-filled natural rubber composites. The mechanical properties of silica-filled rubber composites with silane loading of 16 wt% of silica were found to have optimum mechanical and fracture properties, but carbon black had better reinforcing efficacy after 300% elongation. The experimental investigations and finite element analysis show that the J-integral decreases with increasing crack opening angle. A decrement of 22% is observed in J-integral when crack opening angle varies from 300 to 600 for rubber composites with a pre-crack length of 5 mm. The geometry factor depended on the type of filler when the crack opening angle is increased for the composites having a large pre-crack length. We envisage that this study will be helpful for rectifying design faults of different rubber composites used in industrial applications, especially for passenger and heavy-duty tires.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	1350-6307
Date of Acceptance:	24 May 2023
Last Modified:	23 Jun 2023 12:00
URI:	https://orca.cardiff.ac.uk/id/eprint/160516

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