DETERMINATION OF FRACTURE TOUGHNESS OF MILD STEEL UNDER MIXED-MODE CONDITIONS USING EXPERIMENTAL FINITE ELEMENT ANALYSIS

Authors:

Anita Pritam,Peer Mohamed Appa M.A.Y.,S. Rahamat Basha,Bujjibabu Penumutchi,D. Naga Purnima,Ansari Faiyaz Ahmed,Yogesh Diliprao Sonawane,Chandrabhanu Malla,Rabinarayan Sethi,

DOI NO:

https://doi.org/10.26782/jmcms.2025.07.00005

Keywords:

ANSYS,Critical Stress Intensity Factor,Finite Element Method,Fracture Toughness,SIF,

Abstract

This paper explores the fracture toughness of mild steel through experimental and finite element mixed-mode loading modeling. The experiment set the plate of size rectangular of a through-edge inclined crack to find out the critical stress. The experimental results were then applied as input for modeling the specimen in ANSYS, where both the Mode I and Mode II stress intensity factors were computed. The hoop stress approach obtained the maximum hoop stress theory by use of which the critical stress intensity factor is calculated, which shows the fracture toughness of the material. These showed that the mild steel fracture toughness was between 53 and 78 MPa/m1/2. An experimental parametric study of crack length as well as crack inclination on stress intensity factors was carried out, giving insightful conclusions regarding material behavior in fracture in mixed-mode conditions.

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