| Summary: | This paper conducts a comprehensive investigation into the behavior of API 5L X42 pipelines under the influence of artificial corrosion and combined loads, specifically bending and burst pressure. Three primary objectives guide the research: the development of finite element models for bare pipes and those corroded to 10%, 25%, and 50% of their original integrity; the evaluation of residual strength and stress patterns in corroded pipelines under both combined and uncombined loadings; and the rigorous validation of findings through comparison with previous research. Using finite element analysis in Abaqus software, the study scrutinizes the structural behavior of pipelines under various conditions, emphasizing the effects of corrosion and combined loads. The results highlight that those pipes with 50% artificial corrosion exhibit reduced burst pressure due to heightened stress concentration. Moreover, the investigation into combined loads on pipelines with 50% artificial corrosion shows minimal variation in burst pressure compared to uncombined loads, confirming the reliability of the findings through validation with previous research. In summary, this research significantly contributes to our understanding of API 5L X42 pipeline behavior, particularly in burst pressure analysis, accounting for factors like material integrity, bending, and artificial corrosion. To further enhance future studies, expanding data collection and testing, especially in high-temperature environments, is recommended to provide a more comprehensive perspective on the behavior of API 5L X42 pipelines in practical engineering applications. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
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