Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Marius Tufoi"'
Autor:
Gilbert-Rainer Gillich, Nuno M. M. Maia, Ion-Cornel Mituletu, Zeno-Iosif Praisach, Marius Tufoi, Ionica Negru
Publikováno v:
Latin American Journal of Solids and Structures, Vol 12, Iss 12, Pp 2311-2329
Abstract This paper introduces a method to identify damages in beam-like structures by analyzing the natural frequency changes of the first six transversal vibration modes. A correlation between the damage location and frequency change is established
Externí odkaz:
https://doaj.org/article/df664d08e34345dca65cdf52d2072b1f
Autor:
Gilbert-Rainer Gillich, Nuno M. M. Maia, Ion-Cornel Mituletu, Marius Tufoi, Vasile Iancu, Zoltan Korka
Publikováno v:
Latin American Journal of Solids and Structures, Vol 13, Iss 8, Pp 1526-1544
Abstract Nowadays, the damage severity evaluation in mechanical structures is mostly performed by analyzing the natural frequency shift. The non-isotropic materials, as the multi-layered ones, are wide-spread in industrial applications, due to their
Externí odkaz:
https://doaj.org/article/0785d3cbbee3481daa6f81429c27846c
Publikováno v:
Iranian Journal of Science and Technology, Transactions of Mechanical Engineering. 41:233-242
Vibration-based damage detection methods able to recognize cracks in the early state require accurate frequency evaluation in order to identify small modal changes. Because of higher order, the natural frequencies are rapidly damped, time history pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b11ce91fcbeb0194395910be01ba7979
https://doi.org/10.1007/s40997-016-0059-8
https://doi.org/10.1007/s40997-016-0059-8
Publikováno v:
Applied Mechanics and Materials. 801:142-147
Transverse cracks affect the stiffness and consequently the dynamic behavior of beams, by altering the natural frequencies. Actual cracked beam models are not able to explain in-deep the vibration mechanism and, therefore, no mathematical relation ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acd6c29bd01895894287f28d99d56c9c
https://doi.org/10.4028/www.scientific.net/amm.801.142
https://doi.org/10.4028/www.scientific.net/amm.801.142
Autor:
Cornel Hatiegan, Marian-Dumitru Nedeloni, Cristinel Popescu, Marius Tufoi, Ioan Pădureanu, Cristian Rudolf
Publikováno v:
Analele Universităţii "Eftimie Murgu" Reşiţa: Fascicola I, Inginerie, Vol XXII, Iss 2, Pp 148-161 (2015)
This paper presents a comparative study of four types of plates in the form of trapeze, clamped on the contour, regarding modal analysis. After this analysis, there have been obtained the Eigen frequencies for 30 vibration modes between the limits 18
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::59e58fe32cab78939dae5896b3d33b80
http://anale-ing.uem.ro/2015/216.pdf
http://anale-ing.uem.ro/2015/216.pdf
Publikováno v:
Advanced Materials Research. 1111:13-18
The number and diversity of global nondestructive testing methods applicable to welded structures have rapidly increased in last decades. Vibration-based damage detection methods make possible the evaluation of structures at once; the damage location
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f4e25a5d8496bfba4fab0f78bb8c8f9
https://doi.org/10.4028/www.scientific.net/amr.1111.13
https://doi.org/10.4028/www.scientific.net/amr.1111.13
Publikováno v:
Analele Universităţii "Eftimie Murgu" Reşiţa: Fascicola I, Inginerie, Vol XXII, Iss 1, Pp 23-28 (2015)
The paper presents the research results achieved in order to perform a comparison regarding the influence of natural and forced cooling process applied to the Nitinol active springs inside a linear motion actuator. SMAs offer attractive potentials su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::50ca01aa2900e80c643f2459934691bf
http://anale-ing.uem.ro/2015/2.pdf
http://anale-ing.uem.ro/2015/2.pdf
Publikováno v:
Environmental Engineering and Management Journal. 14:1433-1439
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::246d519ea392d913574514d24361becf
https://doi.org/10.30638/eemj.2015.155
https://doi.org/10.30638/eemj.2015.155
Autor:
Marius, Tufoi1 m.tufoi@uem.ro, Gillich, Gilbert-Rainer2 gr.gillich@uem.ro, Haţiegan, Cornel3 c.hatiegan@uem.ro, Mituleţu, Ion-Cornel1 c.mituletu@uem.ro, Vasile, Iancu1 v.iancu@uem.ro
Publikováno v:
Analele Universitatii 'Eftimie Murgu'. 2014, Vol. 21 Issue 1, p327-334. 8p.
Effects of Structural Damage on Dynamic Behavior at Sandwich Composite Beams – Part II- FEM Analysis
Autor:
Marius Tufoi, Gilbert-Rainer Gillich, Cornel Hațiegan, Ion-Cornel Mitulețu, Zoltan Iosif Korka
Publikováno v:
Analele Universităţii "Eftimie Murgu" Reşiţa: Fascicola I, Inginerie, Vol XXI, Iss 1, Pp 335-344 (2014)
This paper presents results obtained by modal analysis on composite beam like structures in healthy and damaged state. The aim is to obtain damage “signatures” for all possible damage scenarios and to use these data to assess transversal cracks b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doajarticles::1cde732e062e477533211e6479b61e41
http://anale-ing.uem.ro/2014/35.pdf
http://anale-ing.uem.ro/2014/35.pdf