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Nadgradnja stroja za preskušanje mehanskih lastnosti materialov
ID Štendler, Grega (Author), ID Fajdiga, Gorazd (Mentor) More about this mentor... This link opens in a new window, ID Gospodarič, Bojan (Comentor)

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Abstract
V nalogi smo preverili skladnost preizkusov in obstoječega preizkuševališča s standardi. V analizi smo ugotovili, da preizkusi in preizkuševališče niso skladni z veljavnimi standardi, ki za to področje veljajo v Evropski uniji. Les uvrščamo med inženirske materiale, zato je preizkušanje njegovih lastnosti pomembno, ker na ta način pridobimo pravilne podatke o fizikalnih in mehanskih lastnostih. Ugotovili smo, da nadgradnja preizkuševališča ni smiselna, zato smo izdelali projekt novega preizkuševališča in določili potek preizkusa ter pripravo vzorcev za določanje upogibne trdnosti. Projekt novega preizkuševališče smo vsebinsko razdelili na dva dela. Prvi del vsebuje konstruiranje in dimenzioniranje. Sestavnim delom smo določili obliko, dimenzijo in naredili trdnostni preračun. Pripravili smo sestavni načrt preizkuševališča, ki je osnova za pripravo delavniških risb sestavnih delov. V drugem delu smo določili pogon, merilno krmilni sistem in programsko opremo za zajem podatkov. Za pogon smo izbrali servo motor z ustreznim navorom. Za merjenje sile smo uporabili dinamometer. Izhodne podatke dinamometra v obliki električne veličine, smo preko ojačevalnika in merilne kartice s pomočjo programske opreme LabView zajemali na osebnem računalniku v obliki elektronskih preglednic. S tem omogočimo njihovo nadaljnjo obdelavo. Izdelali smo stroškovnik materialov. S tem smo želeli ugotoviti ali je smiselno preizkuševališče kupiti na trgu.

Language:Slovenian
Keywords:preizkušanje, konstruiranje, zajem podatkov
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:BF - Biotechnical Faculty
Publisher:[G. Štendler]
Year:2019
PID:20.500.12556/RUL-110601 This link opens in a new window
UDC:674.05:620.17
COBISS.SI-ID:3114633 This link opens in a new window
Publication date in RUL:18.09.2019
Views:1720
Downloads:211
Metadata:XML DC-XML DC-RDF
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Secondary language

Language:English
Title:Upgrade of machine for testing the mechanical properties of materials
Abstract:
In the experiment we checked the compatibility of the tests and the existing testing station with the standards. In the analysis, we found that the tests and the test station were not compatible with the standards that apply in this field. Wood is classified as an engineering material in the European Union and thus testing of its properties is important, as we can then obtain the correct data on its physical and mechanical properties. We thus aimed to develop a new testing machine and determined the course of the test and the preparation of samples for determining the bending strength. The project was divided into two parts. The first was construction and sizing of the machine. In this we determined the shape, dimensions and for some parts the solidity of the machine. We have prepared a blueprint of the testing machine and a plan of parts. In the second part of the project, we determined the drive, the measurement system and the software used for data acquisition. For the drive we selected a servo motor with a suitable torque. To measure the force, we chose a dynamometer. The output data of the dynamometer is in the form of an electric signal, which is captured on a personal computer in the form of electronic spreadsheets, which allows for further processing. We made a price analysis and compared the price of our proposed system with that of the testing stations on the market, as we wanted to know if it would be better to buy a new test station that is currently commercially available.

Keywords:experiment, fabrication, capture

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