Near-Threshold Fatigue Strength of a Welded Steel Bridge Detail

2008 ◽  
pp. 374-374-26 ◽  
Author(s):  
P Albrecht ◽  
WJ Wright
Keyword(s):  
Fatigue Strength ◽  
Steel Bridge ◽  
Welded Steel ◽  
Near Threshold

Lamellar Tearing Observations Regarding the Application of European Standards in the Field of Welded Steel Constructions

2018 ◽  
Vol 69 (6) ◽  
pp. 1352-1354
Author(s):  
Anamaria Feier ◽  
Oana Roxana Chivu
Keyword(s):  
Bearing Capacity ◽  
Brittle Failure ◽  
Engineering Practice ◽  
Steel Bridge ◽  
Railway Bridge ◽  
Welded Steel ◽  
Direct Replacement ◽  
Lamellar Tearing ◽  
European Standards ◽  
Comprehensive Study

The problem of corrosion for old steel bridges in operation is often solved by direct replacement of elements or structure. Only a few studies have been done to determine the efforts influenced by corrosion in those elements. In general, it is considered that a corroded element has exceeded the bearing capacity and should be replaced, but if the corroded element is secondary it could be treated and kept. A factor in the rehabilitation of an old steel bridge in operation is the aspect of structure. If the structure is corroded, rehabilitation decision is taken is easier. Lamellar tearing describes the cracking that occurs beneath the weld and can be characterized as a brittle failure of steel, in the direction perpendicular to the plane of rolling. The paper presents a comprehensive study on lamellar tearing and summarizes some conclusions about the prevention of them. The conclusions will be exemplified in the case of a railway bridge, with a main truss girder. The paper presents also some observations regarding the stress analysis in fillet welds, resulting from the engineering practice.

Thickness effects on the fatigue strength of welded steel cruciforms

1997 ◽  
Vol 19 (93) ◽  
pp. 311-316 ◽  
Author(s):  
David P Kihl ◽  
Shahram Sarkani
Keyword(s):  
Fatigue Strength ◽  
Welded Steel

scholarly journals Fatigue Strength of Welded Steel Wire Mesh made with Spot Welding

2002 ◽  
Vol 13 (2) ◽  
pp. 25-32
Author(s):  
Kazuo TATEISHI ◽  
Kenshi YOSHIMINE ◽  
Koji OTA ◽  
Takayoshi MATSUI
Keyword(s):  
Fatigue Strength ◽  
Spot Welding ◽  
Steel Wire ◽  
Wire Mesh ◽  
Welded Steel ◽  
Steel Wire Mesh

Statistical Analysis of Fatigue Data From an Interlaboratory Testing Program on Weld Improvement Techniques

2004 ◽  
Author(s):  
A. Naess ◽  
P. J. Haagensen
Keyword(s):  
Fatigue Strength ◽  
Fatigue Testing ◽  
Steel Plates ◽  
International Institute ◽  
Paper Briefly ◽  
Test Program ◽  
Welded Steel ◽  
Round Robin Test ◽  
Testing Program ◽  
Design Guidance

A fatigue testing program has been designed to determine the effect on the fatigue strength of several post weld improvement techniques. The program was organized by Commission XIII of the International Institute of Welding (IIW) and twelve testing laboratories in nine countries participated. The main objective of the round-robin test program was to check the reproducibility of the treatments, and secondly to establish design guidance in terms of level of improvement in fatigue strength. Twelve large welded steel plates were distributed and the treatments that included burr grinding, TIG dressing and three types of peening were performed on plate segments in each laboratory. Simple T-joint specimens were fabricated and fatigue testing was carried out following a prescribed procedure. Standard regression analysis was made and the results were reported by each laboratory. The paper briefly reviews the test program and the statistical analyses that were used to evaluate the results.

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