Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Hessamoddin Moshayedi"'
Publikováno v:
Journal of Thermal Stresses. 43:801-815
The residual stresses (RSs) generated from partial penetration repair welding of a specimen extracted from the 4th stage vane of a gas turbine replace studied. The RSs are maximum in the heat-affec...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2a0c80ee36756c2954074f61676e586
https://doi.org/10.1080/01495739.2020.1751759
https://doi.org/10.1080/01495739.2020.1751759
Publikováno v:
Journal of Mechanical Engineering and Sciences; Vol 13 No 1 (2019): (March 2019); 4536-4557
Tensile residual stress is a major issue in integrity of the welded structures. Undesirable tensile residual stress in welding may reduce fracture toughness and fatigue life of welded structures. The low transformation-temperature (LTT) fillers, due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5b3218bd019fcedf20a3910ff09f4f6
https://doi.org/10.15282/jmes.13.1.2019.14.0384
https://doi.org/10.15282/jmes.13.1.2019.14.0384
Publikováno v:
Engineering Failure Analysis. 97:189-200
Repetitive failures of high-temperature casing bolts of four 325 MW steam turbine units in a 1300 MW thermal power plant have been investigated. Ten of these Cr Mo V steel bolts were failed in less than two years, indicating the probability of repeat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ad07c67da0de99808ac0f3fc41831c8
https://doi.org/10.1016/j.engfailanal.2019.01.044
https://doi.org/10.1016/j.engfailanal.2019.01.044
Publikováno v:
International Journal of Pressure Vessels and Piping. 152:56-64
A 100 MW AP1000 Reactor was considered and welding processes were employed in joining of the main feed water nozzle, in primary circuit of nuclear reactors were simulated by means of finite element method. Distribution and magnitude of the residual s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::398e267bd7093b6cbf244db9792545d1
https://doi.org/10.1016/j.ijpvp.2017.05.009
https://doi.org/10.1016/j.ijpvp.2017.05.009
Publikováno v:
Theoretical and Applied Fracture Mechanics. 87:50-60
A linear applicable relationship is proposed to improve the cleavage failure probability prediction of preloaded specimens using the modified Beremin model. Maximum stress triaxility factor shows fracture load independency for enough high loads and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86564748fb025d8ed9884a9393258faf
https://doi.org/10.1016/j.tafmec.2016.10.005
https://doi.org/10.1016/j.tafmec.2016.10.005
Publikováno v:
International Journal of Pressure Vessels and Piping. 150:62-71
The present work aims to study residual stresses caused by circumferentially welding of two similar API X46 steel pipes by means of finite element modeling. Considering the metallurgical phase transformations and through thermal-mechanical uncoupled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::829cc63afb6cc84de0707744a4261563
https://doi.org/10.1016/j.ijpvp.2017.01.001
https://doi.org/10.1016/j.ijpvp.2017.01.001
Publikováno v:
Theoretical and Applied Fracture Mechanics. 108:102614
The present paper deals with the effects of repair welding residual stresses on the fracture behavior of IN939. A finite element (FE) model was developed using SYSWELD for the thermal-mechanical simulation of the welding process. The predicted residu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccadf4040e522b0cac52664c9b7241c8
https://doi.org/10.1016/j.tafmec.2020.102614
https://doi.org/10.1016/j.tafmec.2020.102614
Publikováno v:
Engineering Failure Analysis. 52:116-128
Residual stresses (RS) due to welding process, may change the load bearing capacity of cracked components. These stresses can also affect the benefit of warm pre-stressing (WPS) cycles which are used for improving structure behaviour. RS are obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::264b15e4716ce70f488fd0bd56d47b7f
https://doi.org/10.1016/j.engfailanal.2015.03.017
https://doi.org/10.1016/j.engfailanal.2015.03.017
Publikováno v:
International Journal of Pressure Vessels and Piping. :29-36
The change in brittle fracture properties due to the presence of welding residual stresses (RS) is studied in a pipe. Welding RS are simulated by using a 3-D finite element (FE) model and experimentally verified. An internal circumferential thumbnail
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d4237b9e68135388c043e47690562bb
https://doi.org/10.1016/j.ijpvp.2015.01.003
https://doi.org/10.1016/j.ijpvp.2015.01.003
Publikováno v:
Journal of Materials Processing Technology. 214:2545-2552
A 2-D finite element model is developed based on fully coupled electrical-thermal and incrementally coupled thermal-mechanical analysis. The growth rate of the weld nugget as a function of welding time and current is studied. Comparison of the predic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3396522ba2308ebfb6cd4314a7ca882
https://doi.org/10.1016/j.jmatprotec.2014.05.008
https://doi.org/10.1016/j.jmatprotec.2014.05.008