Steel and Composite Structures

  • 제24권5호
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  • Pages.615-633
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  • 2017
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Static test on failure process of tubular T-joints with initial fatigue crack

  • Wang, Yamin (School of Mechatronic Engineering, Southwest Petroleum University) ;
  • Shao, Yongbo (School of Mechatronic Engineering, Southwest Petroleum University) ;
  • Song, Shengzhi (R&D centre of Jungian Construction safety and disaster mitigation, Jiangsu Jianzhu Institute) ;
  • Yang, Dongping (Technology Inspection Center, China Petroleum & Chemical Corporation)
  • 투고 : 2016.12.24
  • 심사 : 2017.05.17
  • 발행 : 2017.08.10
⟨ 이전 논문 다음 논문 ⟩

초록

Fatigue crack initiated in welded tubular joints due to cyclic loading may produce harmful effect on the integrity of the tubular structures. To study such effect, both fatigue and static tests on nine circular tubular T-joint specimens made of carbon steel materials were carried out. The specimens were subjected to tensile loading in both fatigue and static tests. The load-displacement relation, the crack propagation and the failure mode of the specimens are all analyzed. The deterioration of the static strength of the cracked T-joints is also investigated and evaluated through an area reduction factor. Experimental results indicate that the static strength of a tubular T-joint with a surface crack seems to decrease slightly while a through crack has relatively remarkable effect on the reduction of the static strength. Additionally, experimental results also show that the toughness of the materials and the geometry of the specimens play an important role on the failure process of cracked tubular T-joints.

키워드

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피인용 문헌

  1. Strength Reduction Factors for Cracked Multi-planar Tubular DT-joints vol.23, pp.1, 2019, https://doi.org/10.1007/s12205-018-0547-z
  2. Effect of chord axial stresses on the static strength of cracked tubular T/Y-joints under out-of-plane and in-plane bending vol.22, pp.7, 2019, https://doi.org/10.1177/1369433218824487