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首页> 外文期刊>Welding and cutting >Increasing the fatigue strength of welded structural details in corrosive environments by applying high frequency mechanical impact treatment
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Increasing the fatigue strength of welded structural details in corrosive environments by applying high frequency mechanical impact treatment

机译：通过进行高频机械冲击处理，增加腐蚀环境下焊接结构零件的疲劳强度

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摘要

The fatigue strengths of certain structural details can be raised significantly by utilising high frequency mechanical impact treatment (HFMI) procedures on welded structures. The application of HFMI procedures on offshore structures could thus lead to structures with substantially greater economic viabilities. However, investigations have not yet been conducted concerning efficiencies of the procedures in corrosive environments. The latest results from investigations on corroded structural details with the S355 material show that, even in extremely corrosive environments, the fatigue strength in comparison with the untreated notch cases can be increased by means of the HFMI post-weld treatment. Based on this test data, S-N curves and FAT classes were elaborated for the structural details of HFMI-treated butt welds and transverse attachments in corrosive environments. These are presented in this article.
机译：通过对焊接结构进行高频机械冲击处理（HFMI）程序，可以显着提高某些结构细节的疲劳强度。因此，在离岸结构上应用HFMI程序可能会导致结构具有更大的经济可行性。但是，尚未进行关于腐蚀性环境中程序效率的调查。对S355材料腐蚀的结构细节进行调查的最新结果表明，即使在极端腐蚀的环境中，通过HFMI焊接后处理，与未处理的缺口情况相比，疲劳强度也可以提高。根据该测试数据，详细阐述了S-N曲线和FAT类，以了解在腐蚀环境中经过HFMI处理的对接焊缝和横向附件的结构细节。这些在本文中介绍。

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