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Rehabilitation techniques ?weld toe grinding? and ?WIG remelting weld toe? have an beneficial influence on the increase of the fatigue life of welded structures by reducing the stress concentrators at the intersection between filler and base material. This stress concentrators reduction is achieved by increasing the radius of the connection between those two elements of the welded joint, horizontal and vertical plates. From those two techniques mentioned above, the technique that causes the greatest fatigue life i...

Variable stresses where the load value varies between a maximum and a minimum value, or varies the position in time, cause after accumulating a large number of load cycles in those structures, the fatigue failure. Fatigue is characterized by failure on values of the applied stress from the load cycles, below the material yield, values which in case of static stress would not have caused problems. Knowing that the variable stressed structures are sensitive to stress concentrators, the paper aims is to highlight the...

Machinery from all industries is subject to aging processes. For economic and time reasons, damage cannot be repaired by replacing worn or damaged parts, but the product must be reconditioned. One of the most used reconditioning technologies in the industry is welding. Reconditioning technologies are credible, when samples are tested standardized. In most cases, welded structures have undergone various types of destructive tests: tension, compression, torsion and fatigue.[1] Since fatigue tests cannot be made duri...

In the automotive industry, but also in other sectors, since the 80s one of the most used methods of reconditioning is welding. In this way, various technologies have been developed for each batch taking into consideration their characteristics and use. To observe and determine the correctness and economic impact of these technologies, the samples must be checked by different types of destructive and non-destructive standard tests.The most demanding destructive testing on samples is the fatigue test with alternati...