Mixed-mode fracture (KI and KII) evaluation in epoxy resin using ASENB configuration

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Authors

  • L. C. Shashidhara
     ,IN
  • H. K. Srinivas
     ,IN
  • C. Anil Kumar
     ,IN
  • K. S. Narayanaswamy
     ,IN
  • H. R. Vitala
     ,IN

DOI:

https://doi.org/10.18311/jmmf/2021/30141

Keywords:

Epoxy resin, fracture toughness, asymmetric single edge notched bend (ASENB) specimen, stress intensity factor (SIF), 3-point bending

Abstract

Asymmetric Single Edge Notched Bend (ASENB) specimen which is exposed to asymmetric 3-point bending is used to estimate the mixed-mode fracture (I/II) in epoxy. The mode I and mode II combination stress intensity factors (SIF) were calculated for various locations of loading points and different crack lengths using the finite element analysis tool ANSYS. By selecting suitable points for the support positions with the loading point mode I to mode II mixities can be achieved. Then, several fracture tests on epoxy resin were conducted using the suggested ASENB specimen. The crack path follows a straight line for mode I fracture and a curved path from the crack initiation angle for mode II fracture and mode II dominant loading. The broken specimen surfaces under various conditions of loading were observed using scanning electron microscopy (SEM). Fractured specimen surfaces of the tested specimens showed reasonably smooth patterns indicating cleavage fracture.

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Published

2022-04-28

How to Cite

Shashidhara, L. C., Srinivas, H. K., Anil Kumar, C., Narayanaswamy, K. S., & Vitala, H. R. (2022). Mixed-mode fracture (K<sub>I</sub> and K<sub>II</sub>) evaluation in epoxy resin using ASENB configuration. Journal of Mines, Metals and Fuels, 69(12A), 129–136. https://doi.org/10.18311/jmmf/2021/30141

Issue

Volume 69, Issue 12A, December 2021

Section

Articles
Crossref
Scopus
Google Scholar
Europe PMC
Received 2022-04-28
Accepted 2022-04-28
Published 2022-04-28

 

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