Browsing by Source "Ultragarsas"
Dabar rodomi įrašai 1-20 iš 20
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Calculations for diagnostics of influence of grinding wheel and electric motor unbalance on grinding wheel wear at cylindrical grinding
(Ultragarsas, 2006)Different aspects of grinding, its stability and arising of self excited vibrations are investigated by many authors. Part of them researched the phenomenon in practice at grinding, the other theoretically and proposed the ... -
Dependence of sound insulation of building constructions on the acoustic properties of materials
(Ultragarsas, 2008)The article deals with some acoustic properties of materials that have an impact on the sound insulation of building constructions, including sound absorption (abatement). These are namely, the capacity of materials to ... -
Diagnostic testing of the comparator carriage vibrations
(Ultragarsas, 2006)Diagnostic testing of the comparator carriage vibrations is discussed in this paper. A dynamic model of a carriage and mathematical equations are presented. A level of carriage vibrations is experimentally determined in ... -
Diagnostics of aviation engines according to the functional characteristics using computer systems
(Ultragarsas, 2006)Opportunities to use of computer systems for the analysis and calculations of functional characteristics of aviation engines of aircraft are investigated. The methodology of the analysis and visualization of throttle ... -
Experimental-diagnostic investigation of operation parameters variations of industrial-technological system
(Ultragarsas, 2009)Defibrator of vertical working of wood chip nemalining and milling is investigated in this work. The principle of defibrator operation is described and principal and functional schemes are given. Diagnostic investigation ... -
Investigation of dynamics of the mechatronical comparator
(Ultragarsas, 2009)Investigation of the influence of dynamic properties of the high precision line scales calibration comparator to its accuracy is analyzed in the paper. Therefore, multi- body dynamic and mathematical models of the comparator ... -
Investigation of resonance frequencies of a rotor system with segmental sliding bearings
(Ultragarsas, 2007)This paper is based on investigation of self-vibrations of rotary systems with segmental sliding bearings, having different frequencies of rotor revolution. The graph of resonant frequencies of operating rotary system ... -
Investigation of the oscillatory dynamics of the interacting plates
(Ultragarsas, 2003)The interaction of the plates through the simplified model of the layer of material is analysed. The layer is represented by the distributed springs performing vertical motion and without mutual interaction. Such model is ... -
Investigation of vibrations acting on the mechatronical comparator
(Ultragarsas, 2007)Oscillations of the comparator, which is used for the dynamic calibration of long optical line scales, are analyzed in the paper. The accuracy of determination of the position of optical lines on the scale depends on the ... -
Methods of computer modeling and recognition of functional characteristics during the diagnosis of aviation engines
(Ultragarsas, 2009)In Lithuania non-destructive testing and quality monitoring is used in the aviation enterprises of civil aviation, in the department of Mathematical modeling, in the Faculty of Transport engineering and in Aviation Institute ... -
Modeling of adaptive hydrodynamic segmental bearings
(Ultragarsas, 2010)There are a lot of mechanics vibrant systems in the modern technique, therefore research of vibrations have a big academic and practical importance. Physical, dynamic and mathematic modeling is done researching modern ... -
Non-destructive diagnostic of influence of different factors on rotary systems with bearings of sliding
(Ultragarsas, 2006)In the paper it is studying influence of different factors on rotary system with bearings of sliding with way of non-destructive diagnostic. It is describing experimental-research stand that consist: gears of refrigerati ... -
Non-destructive testing and diagnostics of made gliders and motor-gliders
(Ultragarsas, 2006)Prospects of development of manufacturing gliders in AB „ Sportinė aviacija “ are submitted. Characteristic malfunctions of gliders, methods of definition of malfunctions and methods of non-destructive testing and diagnostics ... -
Peculiarities of sound insulation in building and technological constructions
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Relationship between draft Lithuanian regulation "Protection against noise" and Nordic standards
(Ultragarsas, 2003)Transposition of construction works EC Directive 89/106 and his essential requirement "Protection against noise" in Lithuanian legislation, initiated revision of corresponding part in building code. As the new approach in ... -
Sound insulation of technological pipelines in premises
(Ultragarsas, 2003)The paper describes a case when technological pipelines run through silent premises from one wall to another. If a certain medium (air or any liquid) is moving in pipelines, their walls propagate noise into silent premises. ... -
Stability of length measurement comparator's carriage under artificial excitation
(Ultragarsas, 2008)Response to external excitation of length measurement comparator’s carriage is analyzed in the article. For this purpose measurement and external excitation systems were composed. The measurement system consisted of an ... -
Statistical quality assurance of vehicles
(Ultragarsas, 2009)The method of the computerized assessment of vehicles, their materials and equipment was developed, calculation and visualization of statistical quality and quality control was prepared by the application of computer ... -
Study of the interaction between particles in the acoustic cyclone separator
(Ultragarsas, 2011)This paper investigates precipitation process of small particles in the secondary air flow of the cyclone separator. It was established that in presence of acoustic field particles smaller than 5 μm are stuck together, ... -
Tribology of particles in acoustic field
(Ultragarsas, 2011)This paper analyzes tribological aspects of particle adhesion in presence of acoustic field. It is shown that acoustic field forces create favourable conditions for contact and adhesion between particles.