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Conyu Grigorov Conev and Krasimir Stoianov Davidov

References [1] Brosh J. T., Mechanical Vibration and Shock Measurements , Bruel & Kjar, 1980, 63. [2] Кирилов В. М., Основи за устройството и проектирането на стрелковото оръжие , София, ДВИ, 1975, 303. [3] Пановко Я.Г., Основы прикладной теории колебаний и удара, Ленинград, масиностроене, 1976, 120. [4] Монтгомери Д.К., Планирование експеримента и анализ данных , Ленинград, Судостроене, 1980, 30.

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Alin-Constantin Sava, Ioan-Liviu Piticari, Diana-Georgeta Nistoran and Cristian-Emil Moldoveanu

References [1] *** Rheinmetall Handbook on Weaponry , Dusseldorf, 1982 [2] Roşca Aurel, Automatic weapons – The resultant vibration of the barrel. The influence on the firing precision , Military Technical Academy Press House, Bucharest, 2002 [3] Piersol Allan and Paez Thomas, Harris’ Shock and vibration Handbook , 6 th edition, McGraw Hill Handbooks, 2009

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Damjan Maletič, Matjaž Maletič, Viktor Lovrenčić, Basim Al-Najjar and Boštjan Gomišček

References Al-Najjar, B. (1996). Total quality maintenance. An approach for continuous reduction in costs of quality products. Journal of Quality in Maintenance Engineering , 2(3), 4-20, http://dx.doi. org/10.1108/13552519610130413 Al-Najjar, B. (1997). Condition-based maintenance: Selection and improvement of a cost-effective vibration-based policy in rolling element bearings. Doctoral thesis, ISSN 0280-722X, ISRN LUTMDN/TMIO-1006-SE, ISBN 91-628-2545-X, Lund University, Inst. of Industrial Engineering, Sweden. Al-Najjar, B. (2007). The lack of

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Friderika Kresal, Tine Bertoncel and Maja Meško

. & Bouteiller, J. (2010). La perception des liens travail/santé, Le rôle des normes de genre et de profession. Revue Française de Sociologie , 51, 247-280, http://doi.org/10.3917/rfs.512.024 Bovenzi, M. (2010). A longitudinal study of low back pain and daily vibration exposure in professional drivers. Industrial Health , 48(5), 584-595. http://doi.org/10.2486/indhealth.MSWBVI-02 Breuer, R. & Brettel, M. (2012). Short- and Long-term Effects of Online Advertising: Differences between New and Existing Customers. Journal of Interactive Marketing , 26(3), 155

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Damjan Maletič, Matjaž Maletič, Basim Al-Najjar, Katerina Gotzamani, Maria Gianni, T. Bartosz Kalinowski and Boštjan Gomišček

References Al-Najjar, B. (2002). Company´s business and competitiveness enhancement: A model of integrated vibration- based maintenance impact on company´s effectiveness. In Proceedings of COMADEM 2002: 15th International Congress on Condition Monitoring and Diagnostic Engineering Management. Paper presented at Condition monitoring and diagnostic engineering management (COMADEM 2002), Sep.2-4, 2002 Birmingham, UK (pp. 238-248). Al-Najjar, B. (2007). The lack of maintenance and not maintenance which costs: A model to describe

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Cornel Haţiegan, Gilbert Rainer Gillich, Gheorghe Popovici and Luminita Haţiegan

References [1] Cornel Haţiegan, Edwald-Viktor Gillich, Ovidiu Vasile, Marian-Dumitru Nedeloni, Ioan Pădureanu, Finite Element Analysis of thin plates clamped on the rim of different geometric forms. Part I: Simulating the Vibration Mode Shapes and Natural Frequencies, Romanian Journal of Acoustics & Vibration, Vol.XII, No.1, 2015. [2] Cornel Haţiegan, Edwald-Viktor Gillich, Ovidiu Vasile, Marian-Dumitru Nedeloni, Marcel Jurcu, Petru Magheţi, Finite Element Analysis of thin plates clamped on the rim of different geometric forms

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Svilen Spirdonov and Svilen Stefanov

Abstract

The following report shows methods for determination of the coefficients of stiffness and damping, for softening the vibrations, which ensue in an armoured vehicle’s suspension from the shooting of a mounted machine-gun. The methods are based on a model of the movement smoothness, in which is additionally included the signal of the machine gun’s recoil.

Open access

Galina Ivanova

References [1]. Bulgarian Standard БДС EN 60068-2-6:2007. Environmental Testing. Part 2-6: Tests. Test Fc: Vibration (Sinusoidal). [2]. Petkov, B. M. Artillery Fuzes. Theory, Estimate and Structures. Saint George MoD Publishing House, Sofia, 1994.

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Cornel Haţiegan, Mihaela Molnar, Sorin Trocaru, Ioan Pădureanu, Marcel Romulus Jurcu, Lidia Filip Nedeloni and Florin Ilie

Abstract

This paper presents thermal analysis with finite elements for a plate of steel covered on the surface with a thin layer of Teflon. There is the possibility of identification of that part responsible for beginning of the thermal degradation using the vibrational model. The thermal analysis with finite elements made with ANSYS program enables monitoring and determination of plate variation of temperature. This variation of temperature could cause significant changes in guided wave propagation.

Open access

Ioan Virca

Abstract

The use and maintenance of technical systems throughout their lifecycle aims at achieving goals that allow for high values of productivity and availability characteristics of these systems. In the economic policy of each state or private organization or state institution, there is the right to determine the type of adequate maintenance system within the maintenance strategy adopted. Thus, the types of maintenance systems recognized in the technical domain are analyzed from the point of view of the two previously-mentioned features, productivity and availability, thus making the predictive maintenance system, derived from the preventively-planned one, advantageous for all organizations. It is obvious that the current trend is to spread this predictive maintenance system, according to which the interventions will be carried out before the malfunction occurs, depending on the periodically measured values of global pressure, flow, energy consumption, temperature, current, voltage, vibrations, etc.