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Estimation of hoop residual stress in the hot-rolled tubes


Damjanović, Darko; Kozak, Dražan; Gubeljak, Nenad; Ivandić, Željko
Estimation of hoop residual stress in the hot-rolled tubes // Proceedings of Second International Conference Modern methods of testing and evaluation in science / Petronić, Sanja ; Bojković, Nataša (ur.).
Beograd: Scientific association for development and affirmation of new technologies, 2015. str. 69-75 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Estimation of hoop residual stress in the hot-rolled tubes

Autori
Damjanović, Darko ; Kozak, Dražan ; Gubeljak, Nenad ; Ivandić, Željko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of Second International Conference Modern methods of testing and evaluation in science / Petronić, Sanja ; Bojković, Nataša - Beograd : Scientific association for development and affirmation of new technologies, 2015, 69-75

ISBN
978-86-918415-1-5

Skup
2nd International Conference Modern methods of testing and evaluation in science

Mjesto i datum
Beograd, Srbija, 14.12.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Residual stress; pipe; tube; hoop stress; incremental hole drilling method; splitting method

Sažetak
The aim of this work is to estimate the hoop residual stresses in the tubes manufactured by hot rolling technique, since in most cases they are delivered only normalized, but not stress relieved too. Therefore, there are surly residual stresses present in tubes which are result of manufacturing technique, but also of uneven cooling after production process. Within this work, hoop stress as the most relevant for pipes and tubes is estimated by two methods: incremental hole drilling method and splitting method. Splitting method is a method for direct assessment of hoop stress in pipe or tube, but the incremental hole drilling method gives the results of principal stresses, so in case of incremental hole drilling method, also the transformation of stresses is presented in order to obtain the hoop stress and make comparison to the splitting method. Although residual stresses are cause of collapse of many constructions, still in most cases of analysis and design of individual parts, structures and plants residual stresses are not taken into consideration. Residual stresses surly have significant effect on the fatigue behavior of materials as well as on the fracture toughness of material, therefore it is recommended to take them into account while calculating the lifetime of component or structure.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

Napomena
UDK 621.791: 66.026.2



POVEZANOST RADA


Projekt / tema
152-1201910-1909 - Analiza i procjena loma konstrukcija iz anizotropnih materijala (Dražan Kozak, )

Ustanove
Strojarski fakultet, Slavonski Brod