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Comprehensive study of structural integrity of non-load-carrying fillet-welded joint effect with large gap size

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Abstract

The structural integrity of the fillet-welded joint with large gap sizes made by semi-automatic CO2 gas shielded welding is investigated to suggest for the improvement of construction quality standards. An allowable limit on the gap size of welded joints is specified in many construction quality standards based on experimental and empirical results from the welded joints made by manual metal arc welding. Mechanical tests such as hardness, tensile, bending and fatigue were performed to confirm the welded specimen’s quality. Macro observation and dye penetrants inspection were performed on the welded specimen face and weld toe area to verify if any defects are present. Obtained S–N curves from experimental results for the welded specimen with large gap present higher performance compared to the fatigue design S–N curves proposed by the International Institute of Welding (IIW) and UK-HSE.

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Acknowledgments

The first author gratefully acknowledged the Malaysian Government (Public Service Department), especially Department of Occupational Safety and Health Malaysia for their supports through scholarships provided. The authors also acknowledge Mr. Koji Murakami, senior technical staff of Kyushu University for the support during experimental work.

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Author notes

  1. Ezzarhan Abdullah

    Present address: Department of Occupational Safety and Health, Putrajaya, WP, Malaysia

Authors and Affiliations

  1. Department of Civil and Structural Engineering, Kyushu University, Fukuoka, Japan

    Ezzarhan Abdullah

  2. Department of Marine Systems Engineering, Kyushu University, Fukuoka, Japan

    Koji Gotoh

  3. Production Control Section, Construction Department, Oshima Shipbuilding Co. Ltd., Nagasaki, Japan

    Junichi Deguchi

Authors
  1. Ezzarhan Abdullah
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  2. Koji Gotoh
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  3. Junichi Deguchi
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Correspondence to Koji Gotoh.

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Abdullah, E., Gotoh, K. & Deguchi, J. Comprehensive study of structural integrity of non-load-carrying fillet-welded joint effect with large gap size. J Mar Sci Technol 20, 752–764 (2015). https://doi.org/10.1007/s00773-015-0328-z

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  • DOI: https://doi.org/10.1007/s00773-015-0328-z

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