Browsing by Author "cb3a397d-225c-42c0-9e2a-e62b8ad63dc0"
Now showing items 1-20 of 27
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Zhou, Taotao; López Droguett, Enrique; Modarres, Mohammad (Elsevier, 2020)This paper discusses component age-related degradation and failure initiated from a shared cause and coupling factor (or mechanism) and the likelihood of the resulting common cause failure (CCF). For these components a CCF ...
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Valença Azevedo, Rafael; Chagas Moura, Márcio das; Didier Lins, Isis; López Droguett, Enrique (Elsevier, 2020)This paper proposes a multi-objective approach to model a replacement policy problem applicable to equipment with a predetermined period of use (a planning horizon), which may undergo critical and non-critical failures. ...
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Oliveira Duarte, Heitor; López Droguett, Enrique; Chagas Moura, Márcio das; Campos Siqueira, Paulo Gabriel Santos; de Lira Júnior, José Claudino (Taylor and Francis Inc., 2020)© 2019, © 2019 Taylor & Francis Group, LLC.The environment is a complex system where humans, materials (e.g. pollutants), and ecological (e.g. plants, animals, microbes) and meteorological conditions interact with each ...
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A prognostics approach based on the evolution of damage precursors using dynamic Bayesian networks Rabiei, Elaheh; López Droguett, Enrique; Modarres, Mohammad (SAGE, 2016)During the lifetime of a component, microstructural changes emerge at its material level and evolve through time. Classical empirical degradation models (e.g. Paris Law in fatigue crack growth) are usually established ...
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Zhou, Taotao; Modarres, Mohammad; López Droguett, Enrique (Elsevier Science BV, 2018)This paper proposes an improved approach to external event probabilistic risk assessment for multi-unit sites. It considers unit-to-unit dependencies based on the integration of the copula notion, importance sampling, and ...
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Das Chagas Moura, Márcio; Mateus Santana, Mateus Santana; López Droguett, Enrique; Didier Lins, Isis; Nunes Guedes, Bruno (Elsevier, 2017)Healthcare institutions make use of technology-intensive equipment that follows tight quality standards. These companies aim at ensuring service continuity and safety of patients. In this context, maintenance services are ...
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Ayele, Yonas Zewdu; Aliyari, Mostafa; Griffiths, David; López Droguett, Enrique (MDPI, 2020)Bridges are a critical piece of infrastructure in the network of road and rail transport system. Many of the bridges in Norway (in Europe) are at the end of their lifespan, therefore regular inspection and maintenance are ...
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Figueroa Barraza, Joaquín; López Droguett, Enrique; Meruane Naranjo, Viviana; Ramos Martins, Marcelo (Elsevier, 2020)One of the current challenges in structural health monitoring (SHM) is to take the most advantage of large amounts of data to deliver accurate damage measurements and predictions. Deep Learning methods tackle these ...
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Lins, Isis Didier; Moura, Marcio das Chagas; López Droguett, Enrique; Correa, Thais Lima (MDPI, 2018-04)The Generalized Renewal Process (GRP) is a probabilistic model for repairable systems that can represent the usual states of a system after a repair: as new, as old, or in a condition between new and old. It is often coupled ...
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Mahmoodzadeh, Zahra; Wu, Keo-Yuan; López Droguett, Enrique; Mosleh, Ali (MDPI, 2020)Gas pipeline systems are one of the largest energy infrastructures in the world and are known to be very efficient and reliable. However, this does not mean they are prone to no risk. Corrosion is a significant problem in ...
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Verstraete, David; Ferrada, Andrés; López Droguett, Enrique; Meruane Naranjo, Viviana; Modarres, Mohammad (Hindawi Ltd., 2017)Traditional feature extraction and selection is a labor-intensive process requiring expert knowledge of the relevant features pertinent to the system. This knowledge is sometimes a luxury and could introduce added uncertainty ...
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Figueroa Barraza, Joaquín Eduardo; Guarda Brauning, Luis; Benites Pérez, Ruben; Bittencourt Morais, Carlos; Ramos Martins, Marcelo; López Droguett, Enrique (Sage, 2020)Due to its capital-intensive nature, the Oil and Gas industry requires high operational standards to meet safety and environmental requirements, while maintaining economical returns. In this context, maintenance policies ...
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San Martin, Gabriel; López Droguett, Enrique; Meruane Naranjo, Viviana; das Chagas Moura, Márcio (SAGE Publications Ltd, 2019)© The Author(s) 2018.One of the main challenges that the industry faces when dealing with massive data for failure diagnosis is high dimensionality of such data. This can be tackled by dimensionality reduction method such ...
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Dynamic Bayesian Network-Based Risk Assessment for Arctic Offshore Drilling Waste Handling Practices Ayele, Yonas Zewdu; Barabady, Javad; López Droguett, Enrique (2016)The increased complexity of Arctic offshore drilling waste handling facilities, coupled with stringent regulatory requirements such as zero "hazardous" discharge, calls for rigorous risk management practices. To assess and ...
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García, José; Lalla Ruiz, Eduardo; Voss, Stefan; López Droguett, Enrique (Springer, 2020)Solving combinatorial optimization problems is of great interest in the areas of computer science and operations research. Optimization algorithms and particularly metaheuristics are constantly improved in order to reduce ...
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Chagas Moura, Márcio das; Valença Azevedo, Rafael; López Droguett, Enrique; Rego Chaves, Leandro; Didier Lins, Isis; Fernando Vilela, Romulo; Sales Filho, Romero (Elsevier, 2016)Occupational accidents pose several negative consequences to employees, employers, environment and people surrounding the locale where the accident takes place. Some types of accidents correspond to low frequency-high ...
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Chagas Moura, Márcio das; Valença Azevedo, Rafael; López Droguett, Enrique; Rego, Leandro; Didier Lins, Isis; Fernando Vilela, Romulo; Sales Filho, Romero (Elsevier, 2016)
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Rabiei, Elaheh; López Droguett, Enrique; Modarres, Mohammad (MDPI, 2018)A fully adaptive particle filtering algorithm is proposed in this paper which is capable of updating both state process models and measurement models separately and simultaneously. The approach is a significant step toward ...
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Martins Pereira de Abreu, Danilo Taverna; Coelho Maturana, Marcos; López Droguett, Enrique; Ramos Martins, Marcelo (ASME, 2020)During a ship life cycle, one of the most critical phases in terms of safety refers to harbor maneuvers, which take place in restricted and congested waters, leading to higher collision and grounding risks in comparison ...
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Díaz, Nicole; Pascual, Rodrigo; Ruggeri, Fabrizio; López Droguett, Enrique (Elsevier, 2017)This paper offers an original methodology to set multi-dimensional maintenance policies for machines whose aging processes require using multiple time scales. It can be considered a generalization of the traditional approach, ...