The development of several grades of high-performance steel (HPS) with yield strengths of the order of 480 to 690 MPa (even more) with improved weldability, toughness and corrosion resistance have changed the scenario of fabrication of welded steel bridges for highway and rail bridge constructions. The HPS possesses the optimum combination of properties required to build cost-effective structur...

This paper proposes the use of artificial neural networks to predict the flexural resistance and initial stiffness of beam-to-column steel joints using the back propagation supervised learning algorithm. Three types of steel beam-to-column joints were investigated: welded, endplate and bolted with top, seat and double web angles, respectively. The neural networks results proved to be consistent...

I. Sărăcin University of Craiova, Faculty of Agriculture, Romania. G. Paraschiv, Polytechnic University of Bucharest, Romania. O. Pandia, I Bozgă, D. Toma University of Agricultural Sciences and Veterinary Medicine Bucharest, Romania Welded construction equipments for agriculture are strongly stressed in terms of mechanics, but also in terms of environmental action and thus in many cases appear...

Recently, steel structures have been accounted for a large percentage of the buildings due to their advantages such as higher execution speed and easier construction. In steel structures, welded joints are commonly used and their quality plays a key role in stability of buildings under applied loads. Hence, to increase resiliency of welded steel structures against natural hazards, welded joints...

V. Marušić, I. Samardžić, I. Opačak. Faculty of Mechanical Engineering in Slavonski Brod University of Osijek, Croatia. The research investigated properties of aluminum bronze welded to structural steel St 52-3 N. Surface material CuAl-A3 was welded in one and two layers. There were dimension, metallographic examination of structures and hardness measured before and after heat treatment and aft...

To improve the usage of material in fatigue loaded complex welded structures a better calculation method (based on FEA) is needed than what is available on the market and an improved management of weld quality. Improved FE-procedures are directly applicable to design of generic structural components within virtually all industries using CAD and FEtools, irrespective of industrial sector. More a...

A crack detection (CD) paint was applied to weld lines of a transverse rib welded joint specimen of a rolled steel for welded structures, and the effects of the paint on visual detection of fatigue cracks were evaluated by performing a fatigue test. Remarkable color development was observed in the CD paint when fatigue cracks propagated along the weld toe lines. At intervals in the fatigue test...

The production of custom and specific tube end shapes by cold end forming using a die is generally limited to seamless tubular parts. Current research work in the field follows the same trend as that of industry and, therefore, there is no accumulated experience, no practical design rules, and no information available in the specialized literature concerning the utilization of tube end forming ...

Limiting dome height (LDH) tests were used to evaluate the formability of laser butt welded blanks of the dual phase 980 steel in comparison with the base metal. Two different lasers were used: diode and Nd:YAG, giving a wide range of welding thermal cycles. A sharp decrease in LDH was observed in the welded specimens due to the formation of a softened zone in the outer heat affected zone. Soft...

The detection and classification of the defects in the welded components are very important in order to ensure the structural integrity of the fabricated components of the test blanket module (TBM). RAFM steel is used as structural material for the TBM, therefore ultrasonic based technique are the most suitable for high sensitive defect detection. In this work ultrasonic pulse echo technique is...