Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Cristian Tufisi"'
Publikováno v:
Studia Universitatis Babeş-Bolyai. Engineering, Vol 69, Iss 1 (2024)
With the rapid development of modern industry, the need for spare parts has increased. Most mechanical systems have transmission components which are composed of toothed gears. In most cases, the manufacturer of the spare part does not exist on the m
Externí odkaz:
https://doaj.org/article/912332f560934f5b8ced06a9f31f7c2f
Autor:
Catalin V. Rusu, Gilbert-Rainer Gillich, Cristian Tufisi, Nicoleta Gillich, Thu Hang Bui, Cosmina Ionut
Publikováno v:
Sensors, Vol 24, Iss 21, p 7019 (2024)
Traditional vibration-based damage detection methods often involve human intervention in decision-making, therefore being time-consuming and error-prone. In this study, we propose using Artificial Neural Networks (ANNs) to detect patterns in the stru
Externí odkaz:
https://doaj.org/article/9ffcd641d7a44dcda24ba977b39e52df
Publikováno v:
Studia Universitatis Babeş-Bolyai. Engineering, Vol 68, Iss Special Issue (2023)
This paper represents an investigation into spare parts longevity in the context of automotive production. By systematically examining the accuracy of the crimping process, our research unveils the potential for cost reduction by pushing the limits o
Externí odkaz:
https://doaj.org/article/afe732674afb449b9d4b1a85297e22f7
Publikováno v:
Studia Universitatis Babeş-Bolyai. Engineering, Vol 67, Iss 1, Pp 7-15 (2022)
The more our infrastructure is aging, the risk of structural failure is higher, making the detection of damage using modal parameters a very important factor that can be applied in structural health moni-toring. The most desired way to assess the hea
Externí odkaz:
https://doaj.org/article/223dff4f94094ab4b760e2f933c02cae
Publikováno v:
Studia Universitatis Babeş-Bolyai. Engineering, Vol 65, Iss 1, Pp 137-144 (2020)
This paper presents a method to find the severity of a crack for cantilever beams that can be used to estimate the frequency drop due to the crack. The severity is found for the crack located at the location where the biggest curvature (or bending mo
Externí odkaz:
https://doaj.org/article/21d3b579637640f9b76ec8d23e09cd93
Autor:
Cristian Tufisi, Catalin V. Rusu, Nicoleta Gillich, Marius Vasile Pop, Codruta Oana Hamat, Christian Sacarea, Gilbert-Rainer Gillich
Publikováno v:
Applied Sciences, Vol 12, Iss 14, p 7231 (2022)
Evaluating the integrity of structures is an important issue in engineering applications. The use of vibration-based techniques has become a common approach to assessing cracks, which are the most frequently occurring damage in structures. When invol
Externí odkaz:
https://doaj.org/article/e3465462bb2e4617972e585b9324c729
Autor:
Nicoleta Gillich, Cristian Tufisi, Christian Sacarea, Catalin V. Rusu, Gilbert-Rainer Gillich, Zeno-Iosif Praisach, Mario Ardeljan
Publikováno v:
Sensors, Vol 22, Iss 3, p 1118 (2022)
Damage detection based on modal parameter changes has become popular in the last few decades. Nowadays, there are robust and reliable mathematical relations available to predict natural frequency changes if damage parameters are known. Using these re
Externí odkaz:
https://doaj.org/article/a8fd4982ddc64ec4bd891b18c26a97b6
Autor:
Gilbert-Rainer Gillich, Nuno M. M. Maia, Magd Abdel Wahab, Cristian Tufisi, Zoltan-Iosif Korka, Nicoleta Gillich, Marius Vasile Pop
Publikováno v:
Sensors, Vol 21, Iss 15, p 5215 (2021)
Identifying cracks in the incipient state is essential to prevent the failure of engineering structures. Detection methods relying on the analysis of the changes in modal parameters are widely used because of the advantages they present. In our previ
Externí odkaz:
https://doaj.org/article/500de1700a3b4fc68982a1491ea0df40
Publikováno v:
Journal of Engineering Studies and Research, Vol 24, Iss 4 (2018)
The paper analyzes the effects of T-shaped cracks in beams regarding the manner in which the frequencies of the bending modes change. We determined the eigenfrequencies of the damaged beam involving the finite element method for five lengths of the b
Externí odkaz:
https://doaj.org/article/0bd02af6937442349caebdb683aaf2e8
Publikováno v:
Vibroengineering Procedia; Oct2024, Vol. 56, p157-162, 6p