The Influence of Prefabricated Crack with Bias Angle on the Material’s Fracture Toughness

Guang Ping Zou; Chong Zhao; Zhong Liang Chang

doi:10.4028/www.scientific.net/KEM.754.210

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Application of the Williams Expansion near a Bi-Material Interface
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Numerical Computation of Stress Intensity Factors in Ultrasonic Very-High-Cycle Fatigue Tests
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 754The Influence of Prefabricated Crack with Bias...

The Influence of Prefabricated Crack with Bias Angle on the Material’s Fracture Toughness

Abstract:

In this work, the effect of the prefabricated crack offset angle on the fracture toughness of the CT specimen was studied by means of the numerical simulation of tensile fracture. It is found that offset angle has a great influence on the fracture toughness of the CT specimen with a straight crack, and the effect is obvious when the bias angle is greater than 3 degrees. For the CT specimen with an oblique crack tip, with the increase of the bias angle of the crack tip, the J-integral value and the fracture toughness are not significantly changed. At the same time, as the angle increases, the stress applied load has more obvious influence on the crack tip stress field.

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Periodical:

Key Engineering Materials (Volume 754)

Pages:

210-213

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.754.210

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Online since:

September 2017

Authors:

Guang Ping Zou*, Chong Zhao, Zhong Liang Chang

Keywords:

Crack Angle, CT Specimen, Fracture Toughness, Ĵ-Integral, Numerical Analysis

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