magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Ivan Hristov (Author), Jože Kutin (Mentor), Andrej Svete (Co-mentor)

Abstract

V magistrski nalogi so predstavljeni vibracijski vplivi na brezmembransko udarno cev, ki je bila razvita za dinamično umerjanje merilnikov tlaka. Z namenom določitve vibracijskih vplivov smo uporabili tri pospeškomere, ki smo jih prilepili na tri različne lokacije sistema. Izhodni signali pospeškomerov in merilnika tlaka so bili prikazani v časovnem in frekvenčnem prostoru preko izdelanega nadzornega programa v programskem okolju LabVIEW. Z namenom ocene občutljivosti merilnika tlaka na vibracije je bila impulzno vzbujana prirobnica, v kateri je vgrajen merilnik tlaka. Iz občutljivosti in opravljenih meritev pri različnih začetnih tlakih v visokotlačnem delu cevi so bili ocenjeni vibracijski vplivi na udarno cev. Izkazalo se je, da so vibracije minorne motnje v primerjavi z drugimi, ki so verjetno povezane z značilnostmi udarnega vala.

Keywords

magistrske naloge;udarna cev;vibracije;piezoelektrični pospeškomeri;časovno-spreminjajoči tlak;dinamično umerjanje;LabVIEW;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [I. Hristov]
UDC: 534:531.787(043.2)
COBISS: 69985027 Link will open in a new window
Views: 841
Downloads: 120
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Other data

Secondary language: English
Secondary title: Vibrational effects on the dynamic pressure measurement standard based on shock tube
Secondary abstract: This master's thesis determines the vibrational effects on a diaphragmless shock tube, which was developed for dynamic calibrations of pressure meters. In order to determine the vibrational effects, we used three accelerometers, which were glued to three different system locations. The accelerometers and the pressure transducer output signals were displayed in a time and frequency domain through a developed program in the LabVIEW software environment. In order to assess the sensitivity of the piezoelectric pressure transducer, the end-wall shock tube flange with the integrated pressure transducer was excited. Considering the obtained acceleration sensitivity of the pressure transducer and measured accelerations during the operation of the shock tube at different initial driver gauge pressures, the vibrational effects on the operating shock tube were estimated. The vibrations turned out to be minor disturbances compared to others, which are probably related to the characteristics of the shock wave.
Secondary keywords: master thesis;shock tube;vibrations;piezoelectric accelerometer;time-varying pressure;dynamic calibration;LabVIEW;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. Ljubljana, Fak. za strojništvo
Pages: XXII, 57 str.
ID: 12947121
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