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Title:Analiza zaostalih napetosti med procesom izdelave teleskopske roke : magistrsko delo
Authors:Mlinarič, Janez (Author)
Vuherer, Tomaž (Co-mentor)
Files:.pdf MAG_Mlinaric_Janez_2021.pdf (5,16 MB)
MD5: FE01224E492842AB240DA263D76D87DC
 
Language:Slovenian
Work type:Master's thesis/paper (mb22)
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:V magistrski nalogi smo analizirali zaostale napetosti med procesom izdelave teleskopske roke. Zaostale napetosti v materialu se pogosto pojavijo kot posledica preoblikovalnih procesov, ki povzročijo plastično deformacijo materiala ali vnos toplote vanj. So zelo nezaželene zaradi možnega padca nosilnosti in drugih težav. Spremljali smo vrednosti in porazdelitev zaostalih napetosti na dveh enakih delih teleskopskih rok, narejenih iz plošč različnih šarž. Zaostale napetosti smo spremljali v štirih fazah – pred obdelovalnimi procesi, po laserskem izrezu, upogibu in varjenju. Zaostale napetosti smo merili s pomočjo magnetne metode z napravo SMMT-1. Nadaljnjo obdelavo signalov smo izvedli v Excelu in rezultate prikazali s prostorskimi grafi, ki smo jih primerjali med sabo. Odkrili smo razlike med polji zaostalih napetosti v vseh meritvenih fazah, največje so bile po upogibanju.
Keywords:zaostale napetosti, teleskopska roka, analiza, magnetna metoda, merjenje
Year of publishing:2021
Place of performance:Maribor
Publisher:[J. Mlinarič]
Number of pages:XI, 58 str.
Source:Maribor
UDC:620.172.21:621.7.011(043.3)
COBISS_ID:62124547 New window
Views:30
Downloads:9
Metadata:XML RDF-CHPDL DC-XML DC-RDF
Categories:KTFMB - FS
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:06.04.2021

Secondary language

Language:English
Title:Analysis of residual stresses during process of telescopic arm production
Abstract:In master thesis we focused on analysing residual stresses during process of telescopic arm production. Residual stresses in the material often occur due to transformation processes which cause plastic deformation or heat input to the material. They are undesirable since they may decrease load capacity or cause other problems. We monitored residual stress values and its distribution in two segments of telescopic arm. The segments were made from a shell plate with different batches. Residual stresses were observed during four phases - in base material before transformation, after laser cutting, bending, and welding. We measured residual stress with directional effective permeability method using SMMT-1. Measurements were processed in Excel and presented in 3D charts. We compared results between different plates. We found differences between fields of residual stresses in all measuring phases, the substantial difference was observed after bending.
Keywords:Residual Stresses, Telescopic Arm, Analysis, Directional Effective Permeability, Measuring


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