Development of an Innovative Extension for Fatigue Life Monitoring Using a Piezoelectric Sensor

Ghaderiaram, Aliakbar; Mohammadi, Reza; Schlangen, Erik; Fotouhi, Mohammad

doi:10.1016/j.prostr.2023.12.057

Procedia Structural Integrity

2024

DOI: 10.1016/j.prostr.2023.12.057

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Development of an Innovative Extension for Fatigue Life Monitoring Using a Piezoelectric Sensor

Aliakbar Ghaderiaram,

Reza Mohammadi,

Erik Schlangen

et al.

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2024

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Methodology for fatigue life maximization of a ship by minimizing fatigue induce stress values at hot spots

Kapnopoulou,

Samuelides

2024

Preprint

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The fatigue life of a ship is as high as the fatigue life of its most vulnerable connection. In the present study it is sought to extend the fatigue life of a ship by extending the fatigue life of its hot spot locations. The ship structural details studied are approached at a macroscopic level and a novel two-step approach methodology is proposed that aims in minimizing the fatigue-induce stress values developed at hot spot locations. Therefore, fatigue life is maximized. This is attained by developing and solving structural optimization problems. The methodology is implemented into three separate ship structural details at a Bulk Carrier; the lower hopper knuckle connection, the lower side frame bracket toe and the side framing bracket to upper sloping connection. The steps of the methodology proposed include: (a) the identification of fatigue-induce stress component, (b) picking out critical structural member(s) of the connections, (c) implement modifications by setting up and solving a size optimization problem for the details studied (1st step), and (d) implement geometry modifications by setting up and solving a topology optimization problem for the details studied (2nd step). Fatigue analyses are conducted in both steps in order to appraise the changes implemented. The implementation of the proposed methodology manages to increase the fatigue life of the connections up to 17.24 years.

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Methodology for fatigue life maximization of a ship by minimizing fatigue induce stress values at hot spots

Kapnopoulou,

Samuelides

2024

Preprint

View full text Add to dashboard Cite

show abstract

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Development of an Innovative Extension for Fatigue Life Monitoring Using a Piezoelectric Sensor

Cited by 1 publication

References 14 publications

Methodology for fatigue life maximization of a ship by minimizing fatigue induce stress values at hot spots

Methodology for fatigue life maximization of a ship by minimizing fatigue induce stress values at hot spots

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