Experimental and Simulation Study on Fatigue Damage Characteristics of HNBR by HTHP Aging in Oil-Based Mud Environment

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2024-12-17 DOI:10.1111/ffe.14540

Gang Hu, Jie Deng, Guorong Wang, Kai Tang, Guohui Ren, Xinming Wen

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引用次数: 0

Abstract

Hydrogenated nitrile butyl rubber (HNBR) elastomers are widely used in high-temperature and high-pressure (HTHP) corrosive environments, especially in the oil and gas sector. However, fatigue failure, which is often encountered in rubber components, remains a critical issue. In this paper, the effect of HTHP aging on the fatigue damage characteristics of HNBR in an oil-based mud environment is investigated through experiments and numerical simulations. The experimental results showed that the elongation at break of the specimens decreased by 260% and the compressive stiffness increased with strain after high-temperature and high-pressure exposure in the oil-based mud. Furthermore, tear tests showed that the rate at which the aged HNBR produced unit crack surfaces was significantly accelerated. Finally, the fracture and fatigue crack extension simulation results show the similarity between the damage evolution law of HNBR materials and the stress–strain curve of typical rubber materials.

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.