Notch Effects on the Stress Intensity Factor and on the Fatigue Crack Path for Eccentric Circular Internal Cracks in Elliptically Notched Round Bars under Tensile Loading

Article Construction & Building Technology

Study on corrosion-induced cracks for the concrete with transverse cracks using an improved CDM-XFEM

Hao Jin et al.

Summary: An improved CDM-XFEM method is proposed to calculate corrosion-induced cracks in concrete with transverse cracks, and the results suggest that the form of transverse cracks influences the width and angle of corrosion-induced cracks.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Materials Science, Multidisciplinary

Effect of carburizing process on high cycle fatigue behavior of 18CrNiMo7-6 steel

Shengwei Qin et al.

Summary: This research studied the effects of carburizing process on the material properties and fatigue performance of 18CrNiMo7-6 gear steel. The evolution processes of hardness, microstructure, and residual stress of carburized specimens during fatigue testing were observed, and the initiation of fatigue cracks and the transformation of retained austenite were analyzed. The results showed that the fatigue strength of carburized specimens increased and then decreased with the increase of effective case depth, and the fatigue failure mode changed from surface failure to internal failure after carburizing.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2022)

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Article Mechanics

Fracture of brittle solid with an internal penny-shaped crack: Semi-circular bending test and numerical simulation

Haijun Wang et al.

Summary: The propagation and fracture characteristics of internal cracks in SCB tests were investigated. Through numerical simulations and experimental verification, it was found that the presence of internal cracks significantly reduces the failure load of the samples.

ENGINEERING FRACTURE MECHANICS (2022)

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Article Engineering, Mechanical

A Structural Stress Approach Accounting for Notch Effects on Fatigue Propagation Life: Part I Theory

Yifei Yu et al.

Summary: This paper presents the Notch Structural Stress method, which reflects the impact of the notch effect on fatigue crack propagation lives. The validity of the method is verified through experiments, and it is found that the Notch Structural Stress parameter provides a more effective consolidation of fatigue data under different notch conditions.

INTERNATIONAL JOURNAL OF FATIGUE (2022)

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Article Chemistry, Multidisciplinary

Numerical Evaluation of Fatigue Crack Growth of Structural Steels Using Energy Release Rate with VCCT

Yusuf O. Busari et al.

Summary: This research numerically evaluates fatigue crack growth of structural steels S355 and S960 using Paris' law parameters determined experimentally. The crack propagation is modeled using 3D FEM with adaptive remeshing, showing acceptable agreement with experimental investigation.

APPLIED SCIENCES-BASEL (2022)

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Proceedings Paper Construction & Building Technology

Review and synthesis of stress intensity factor (SIF) solutions for circular inner cracks in round bars under tension loading

Jesus Toribio et al.

Summary: In this paper, the stress intensity factor (SIF) in a bar subjected to tensile loading is calculated using the finite element method (FEM) and the J-integral. The results show that the SIF is higher at the point of the crack front closest to the bar surface, and an increase in crack eccentricity or diameter raises the difference between the SIF values at the opposite crack points.

4TH INTERNATIONAL CONFERENCE ON STRUCTURAL INTEGRITY (ICSI 2021) (2022)

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Review Engineering, Manufacturing

Defect inspection technologies for additive manufacturing

Yao Chen et al.

Summary: This paper describes defect inspection technologies and their applications in additive manufacturing processes, summarizes traditional defect detection technology and surface defect detection methods based on deep learning, and suggests future directions.

INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING (2021)

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Proceedings Paper Engineering, Civil