scholarly journals Probabilistic models for the fatigue resistance of welded steel joints subjected to constant amplitude loading

2021 ◽  
pp. 106626
Author(s):  
Zbigniew Mikulski ◽  
Tom Lassen
Keyword(s):  
Fatigue Resistance ◽  
Probabilistic Models ◽  
Constant Amplitude ◽  
Welded Steel ◽  
Steel Joints

Fatigue Behaviour of Friction Stir Welded Steel Joints

2014 ◽  
Vol 891-892 ◽  
pp. 1488-1493 ◽  
Author(s):  
José Azevedo ◽  
Virgínia Infante ◽  
Luisa Quintino ◽  
Jorge dos Santos
Keyword(s):  
Base Material ◽  
Welding Process ◽  
Steel Structures ◽  
Fatigue Behaviour ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Welded Steel ◽  
Shipbuilding Industry ◽  
Friction Stir ◽  
Steel Joints

The development and application of friction stir welding (FSW) technology in steel structures in the shipbuilding industry provide an effective tool of achieving superior joint integrity especially where reliability and damage tolerance are of major concerns. Since the shipbuilding components are inevitably subjected to dynamic or cyclic stresses in services, the fatigue properties of the friction stir welded joints must be properly evaluated to ensure the safety and longevity. This research intends to fulfill a clear knowledge gap that exists nowadays and, as such, it is dedicated to the study of welded steel shipbuilding joints in GL-A36 steel, with 4 mm thick. The fatigue resistance of base material and four plates in as-welded condition (using several different parameters, tools and pre-welding conditions) were investigated. The joints culminate globally with defect-free welds, from which tensile, microhardness, and fatigue analyses were performed. The fatigue tests were carried out with a constant amplitude loading, a stress ratio of R=0.1 and frequency between 100 and 120 Hz. The experimental results show the quality of the welding process applied to steel GL-A36 which is reflected in the mechanical properties of joints tested.

Random Load Fatigue: Theory and Experiment

1985 ◽  
Vol 199 (3) ◽  
pp. 249-257 ◽  
Author(s):  
J M Tunna
Keyword(s):  
Traditional Method ◽  
Laboratory Tests ◽  
Stress Range ◽  
Constant Amplitude ◽  
Random Load ◽  
Welded Steel ◽  
Random Loads ◽  
Fatigue Design ◽  
Stress Signal ◽  
Theory And Experiment

This paper is concerned with the problem of fatigue design for random loads. A theory is outlined which allows the fatigue life to be predicted from the constant amplitude stress range–life curve and the standard deviation and ruling frequency of the stress signal. Laboratory tests are described which verify the theory for welded steel constructions in a railway environment. The results are also analysed by a more traditional method. Areas where the theory might usefully be extended are identified.

Fatigue-resistance evaluations for mixed mode damages under constant amplitude and overload

2020 ◽  
Vol 108 ◽  
pp. 102599
Author(s):  
Slobodanka Boljanović ◽  
Stevan Maksimović ◽  
Andrea Carpinteri
Keyword(s):  
Fatigue Resistance ◽  
Mixed Mode ◽  
Constant Amplitude
Sign in / Sign up

Export Citation Format

Share Document