Extending the fatigue performance of new and repaired welded T-specimens using High Frequency Mechanical Impact
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F25%3A43975795" target="_blank" >RIV/49777513:23210/25:43975795 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0142112325002786?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0142112325002786?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijfatigue.2025.109081" target="_blank" >10.1016/j.ijfatigue.2025.109081</a>
Alternative languages
Result language
angličtina
Original language name
Extending the fatigue performance of new and repaired welded T-specimens using High Frequency Mechanical Impact
Original language description
In this study, an experimental investigation was conducted to evaluate the benefit of high-frequency mechanical impact (HFMI) on both newly welded and repaired steel joints. Welded specimens in the as-welded condition, identical specimens treated with HFMI, and HFMI-treated repaired welds were subjected to constant-amplitude cyclic loading until failure. The testing involved structural steel joints representative of typical bridge and shipbuilding details. HFMI treatment was applied along the weld toes using a standard pneumatic impact tool, and all specimens were tested under controlled laboratory conditions to record S–N (stress–life) data. HFMI-treated specimens, including both new and repaired welds, exhibited significantly improved fatigue resistance compared to their as-welded counterparts. Specifically, the HFMI-treated welds endured 2–3 times longer life than as-welded joints under equivalent loading. Additionally, the application of HFMI to repaired welds further extended their fatigue life, demonstrating that HFMI is not only effective in new structures but also offers substantial benefits for welded-joint rehabilitation. The treated joints showed a notable increase in fatigue life and an improvement in the FAT class (allowable stress range at 2 × 10⁶ cycles)
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
INTERNATIONAL JOURNAL OF FATIGUE
ISSN
0142-1123
e-ISSN
1879-3452
Volume of the periodical
200
Issue of the periodical within the volume
NOV 2025
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
nestránkováno
UT code for WoS article
001512626100001
EID of the result in the Scopus database
2-s2.0-105007185513