Work

Experimental investigations on characterizing the uniaxial mechanical property variations along the thickness of hydrogenation reactor welded joints by spherical indentation tests

Year: 2024

Type: article

Abstract: To meet the demands for non-destructive testing of uniaxial mechanical properties of welded joints of thick-wall hydrogenation reactors, this study provides an experimental investigation on whether the spherical indentation tests (SITs) can accurately characterize the uniaxial mechanical property variations along the thickness of welded joints. The phenomenologically summarized empirical method (i.e., the Kwon method) and the semi-analytical method (i.e., the simplified-IIEM) were selected as representatives, and their reliability was judged from the viewpoints of stress-strain prediction, the inversion accuracy and repeatability of strength, and the ability to characterize the variation of uniaxial mechanical properties along the thickness of welded joints. Characteristics of the inverse predictions were analyzed, and the source of errors in each method were extensively investigated. This study provides a theoretical and technical guidance for the engineering application and promotion of SITs.

Source: Heliyon

DOI: 10.1016/j.heliyon.2024.e37656

Authors: Xin Ma, Zhiqiang Ge, Tairui Zhang, Weiwei Zheng

Institutions: Nanjing Tech University, Southeast University

Language: English

Topic: Welding Techniques and Residual Stresses

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,100

Funders: National Natural Science Foundation of China, General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, National Key Research and Development Program of China, Fundamental Research Funds for the Central Universities