David Rodrigues | University of Porto/ University Nova de Lisboa/Instituto Superior de Engenharia do Porto (original) (raw)
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The states of damage along a reformer tube in service for 09 years are metallographically analyze... more The states of damage along a reformer tube in service for 09 years are metallographically analyzed[ Damage levels are ranked relating to remaining life[ The damage distribution is obtained for the whole reformer tube[ The results show that the accumulated damage of the tube is non!uniform[ The damage level in the lower part of the reformer tube is signi_cantly higher than that in the upper part\ especially in the weld region[ The damage localization is also veri_ed by use of a continuum damage mechanics _nite element technique[ Accordingly it is proposed that local replacement might be a desirable method to extend the service life when the lower part of the reformer tube reaches the safe rupture life[ Þ 0888 Elsevier Science Ltd[ All rights reserved[
The states of damage along a reformer tube in service for 09 years are metallographically analyze... more The states of damage along a reformer tube in service for 09 years are metallographically analyzed[ Damage levels are ranked relating to remaining life[ The damage distribution is obtained for the whole reformer tube[ The results show that the accumulated damage of the tube is non!uniform[ The damage level in the lower part of the reformer tube is signi_cantly higher than that in the upper part\ especially in the weld region[ The damage localization is also veri_ed by use of a continuum damage mechanics _nite element technique[ Accordingly it is proposed that local replacement might be a desirable method to extend the service life when the lower part of the reformer tube reaches the safe rupture life[ Þ 0888 Elsevier Science Ltd[ All rights reserved[