CV Lattes
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Universidade de São Paulo (USP). Escola Politécnica (EP) (Institutional affiliation from the last research proposal) Birthplace: Brazil
Claudio Ruggieri is Professor of Structural Engineering and Fracture Mechanics at University of São Paulo (USP), Brazil and principal investigator of the Fracture Mechanics and Structural Integrity Research Group (NAMEF) at USP. He received his Ph.D. from Osaka University in 1994 and was a research assistant and visiting professor at the University of Illinois at Urbana-Champaign (UIUC) from 1994-1997. He was a visiting researcher at University of California at Santa Barbara (UCSB) from 2014 to 2015 and at University of Manchester (UK) in 2018 supported by the Royal Academy of Engineering. He is currently a visiting researcher at the Dept. of Ocean Engineering, Texas AM University. Prof. Ruggieri has published extensively in the areas of fracture mechanics and structural integrity contributing with more than 75 papers in strongly refereed journals and more than 180 articles in national and international conferences. He has also received some research awards, most notably from the American Society of Mechanical Engineers (ASME) and is currently a Research Fellow with the Brazilian Research Council (CNPq 1A). Prof. Ruggieri is a member of various committees and editorial boards, including Committee E08 (Fracture and Fatigue) of the American Society for Testing and Materials (ASTM), Editorial Advisory Board for Engineering Fracture Mechanics, the European Structural Integrity Society (ESIS) and the Brazilian Society of Mechanical Sciences (ABCM). (Source: Lattes Curriculum)
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The rapid increase in oil and gas (O&G) exploration and production activities in the Brazilian pre-salt reserves, located in ultra-deep waters in the South and Southeast basins, has motivated Petrobras to develop new and more efficient technologies more applicable to the high depths, elevated temperatures and pressures (HTHP - high temperature high pressure), and the presence of highly ag…
Green hydrogen has a strong potential to become a central pillar of the energy transformation required to limit global warming. Incorporation of hydrogen into the energy production system will also help balance renewable electricity supply and demand and serve as long-term seasonal storage. Consequently, this increasing demand for using hydrogen as a widespread energy carrier will drastic…
This research addresses and further advances a local approach to cleavage fracture in terms of a modified form of the Weibull stress and associated probabilistic formulation. Within the present methodology, cleavage fracture is viewed as a multiscale problem in which the coupling between macroscopic (remote) loading, here characterized by the J-integral, and material failure at the microl…
Novel methodologies and innovative approaches have evolved over the past years to develop a theoretical framework capable of accurate predictions of cleavage fracture behavior in different cracked bodies by unifying toughness measures across different crack configurations and loading modes. A consensus has emerged in favor of micro mechanics models based upon a probabilistic interpretatio…
(Only some records are available in English at this moment)
The extension of service life and assessment of critical defects in flexible pipelines and risers represent a central element for the safe exploration and production of O&G in deep and ultra-deep waters. Specifically, in the case of tensile armor wires, there is clearly a significant and important gap regarding the proper assessment of their fracture resistance properties, namely: tensile…
The increasing demand for energy and natural resources has spurred a flurry of exploration and production activities of oil and natural gas in more hostile environments, including very deep water offshore hydrocarbon reservoirs. One of the key challenges facing the oil and gas industry is the assurance of more reliable and fail-safe operations of the infrastructure for production and tran…
This proposal includes a numerical and methodological research on the effects of stress triaxiality and J vs. CTOD relationships in SE(T) specimens with applications to the assessment of defects in pipelines and risers containing circumferential defects. The focus of this work is in agreement with the research conducted by the Center of Advanced Fracture Mechanics and Structural Integrity…
The offshore industry is moving to deeper waters to explore new oil and gas natural resources. It has motivated the development of efficient and innovative ocean systems; they have to meet severe design requirements, and some restrictions during installation and operation. Rigid risers are a key element to ensure a safe production. These risers are subjected to high levels of plastic def…
| 1 / 1 | Ongoing grants |
| 17 / 13 | Completed research grants |
| 1 / 1 | Ongoing scholarships in Brazil |
| 17 / 3 | Completed scholarships in Brazil |
| 1 / 1 | Completed scholarships abroad |
| 37 / 19 | All research grants and scholarships |
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