Analysis of Ultimate Compressive Strength of Cracked Plates with the Use of DoE Techniques

Woloszyk, Krzysztof; Garbatov, Y.

doi:10.2478/pomr-2020-0052

Cited by 6 publications

(8 citation statements)

References 32 publications

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“…In our previous work [31], the validation of the FE model of the intact plate was performed, and showed good agreement with available experimental data and empirical formulations. In the case of degradation effects, the corrosion model was already verified in [1], where subsequent thickness reduction and changes in mechanical properties were adopted in the FE model of stiffened plates, showing good agreement with experimental results.…”

Section: Fig 4 Fe Model Of the Cracked And Corroded Plate With Applied Boundary Conditionsmentioning

confidence: 60%

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Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Woloszyk

Garbatov

2021

Polish Maritime Research

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The work presented here investigates the structural response of cleaned corroded plates, subjected to compressive load in the presence of a locked crack, where the change of mechanical properties as a result of corrosion development and the cleaning process is also accounted for. A Finite Element model for assessing the compressive strength, considering geometric and material nonlinearities, is developed, and the analysed plates are compared with the available experimental data. An experimental design plan is generated using the Design of Experiments techniques, which quantifies the influence of the governing variables and their interactions with respect to the plate’s ultimate compressive strength. With a limited number of observations, the most significant effects are identified. The corrosion degradation is revealed to be the most crucial effect leading to an effective strength reduction. It was found that, in the case of a corroded plate with a locked crack subjected to a compressive load, the most severe case is when the crack is transversely oriented. The strength reduction is slightly lower than when the corrosion degradation and the presence of a crack are considered to be a simple summation of these two effects but acting separately. The outcome of the analysis is the development of several empirical formulations that allow a fast estimation of the ultimate strength of a corroded plate, subjected to compressive load in the presence of a locked crack, accounting for different cleaning.

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Section: Fig 4 Fe Model Of the Cracked And Corroded Plate With Applied Boundary Conditionsmentioning

confidence: 60%

“…The most severe case was found to be a transverse crack in the loading direction. Some empirical formulations to assess the ultimate strength of cracked plates were derived [22], [30], [31].…”

Section: Introductionmentioning

confidence: 99%

Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Woloszyk

Garbatov

2021

Polish Maritime Research

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“…Analyzing the results presented in Table 1, one can first obtain the model's response factors' influence. More detailed information about the factorial analysis can be found in (Woloszyk and Garbatov 2020b). One of the most efficient methods is to use the half-normal probability plots (Daniel 1959).…”

Section: Resultsmentioning

confidence: 99%

Modern Trends in Research on Steel, Aluminium and Composite Structures

Giżejowski¹,

Kozłowski²,

Chybiński³

et al. 2021

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involvement in the organisation of the 14th International Conference of Metal Structures is perceived by me as a distinction, but also as a proof of trust in the University. This activity fits perfectly the University mission to educate at all levels of higher education and in lifelong learning programs in close connection with scientific and research development. Nowadays, Poznan University of Technology offers education at 9 fac ulties, covering a total of 33 fields of study. Nearly 16,000 students study here and over 1,300 academic teachers cater to their education. The didactic offer of Poznan University of Tech nology covers the most important fields related to modern technology with a recently launched program in Artificial Intelligence; it is also well adapted to the requirements of both domestic and foreign employers. High-quality scientific research is an integral element of Poznan University of Technology strategy, characterized by scientific achievements of its employees who published more than 2,000 scientific contributions: highly ranked articles, monographs, textbooks and other publications. The total number of PUT Library collections is over 450,000 volumes. Among numerous achievements, the University is proud of the H2020 Marie Sklodowska-Curie Global Fellowships and ERC grants. Furthermore, our sci entists are among the authorities of the Polish Academy of Sciences (9 representatives) and are also members of numerous international scientific societies. According to Shanghai Rank ing 2020 edition in disciplines, PUT was classified among the best 400 universities in the world in Mechanical Engineering. Also, we are ranked by students as the most popular university in Poland according to the Ministry of Science and Higher Education in the 2020/2021 academic year.Owing to EU funding, recent years have introduced the development of research infrastruc ture at the Warta university campus. In 2020 our University also became a leader of European University EUNICEa project funded by the European Commission with a budget of more than 6 million EUR. Our university consortium partners originate from Belgium, Germany, France, Finland, Italy and Spain. EUNICE's main goal is to build a common European Uni versity of the future, and prepare its structure and management design within 3 years. EUNICE is aspiring to provide a high-quality digital learning, offering flexible and multidis ciplinary studies, as well as opportunities for students and staff for international exchange and networking. EUNICE will develop modern and innovative pedagogical methods and provide enhanced student services, in terms of enrolment, recognition, student counselling and guid ance aimed at boosting the employability of all students. Just recently, PUT was also granted by the European Commission a follow-up scientific project REUNICE. This H2020 strategic project for the European University Alliance EUNICE aims at aligning its education, research and innovation strategies through an ambitious and transformative agenda.Therefore, I am ...

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“…Stiffened plates made of normal strength steel (minimum yield stress of 235 MPa) with three different thicknesses (5,6, and 8 mm) were tested, where the plate and the stiffener are of the same thickness. The stiffened plates were 1,260 mm long and 400 mm wide with the stiffener 100 mm in height.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…Series of experiments on plates subjected to different types of loading may be found, for example, in [5], and numerical analysis e.g. in [6]. Based on that, different empirical formulations were proposed.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations of Ultimate Strength of Imperfect Stiffened Plates of Different Slenderness

Woloszyk

Garbatov

Kowalski

et al. 2020

Polish Maritime Research

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The objective of this study is to analyse the behaviour of compressed stiffened plates of different slenderness using experimental and numerical methods. The presented results are part of a long-term project to investigate the ultimate strength of geometrically imperfect structures subjected to different degradation phenomena, including corrosion degradation and locked cracks. Several specimens were subjected to a uniaxial compressive force, and the most important quantities related to the structural behaviour were captured and analysed. A finite element model, accounting for material and geometrical nonlinearities and initial geometrical imperfections, was developed using the commercial software ANSYS. The residual welding-induced stresses were measured in the middle cross-section for two specimens. The initial imperfection was identified by employing a close-range photogrammetry approach. It was concluded that the numerical analyses, based on the finite element model, predict the ultimate strength of stiffened plates accurately, although some deviations were also observed. The detailed analysis with the indication of possible uncertainty is presented, and several conclusions are derived.

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Analysis of Ultimate Compressive Strength of Cracked Plates with the Use of DoE Techniques

Cited by 6 publications

References 32 publications

Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Ultimate Compressive Strength Assessment of Uncleaned and Cleaned Corroded Plates with Locked Crack

Modern Trends in Research on Steel, Aluminium and Composite Structures

Experimental and Numerical Investigations of Ultimate Strength of Imperfect Stiffened Plates of Different Slenderness

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