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Effects of several TIG weld repairs on the axial fatigue strength of AISI 4130 aeronautical steel-welded joints
(Wiley-Blackwell, 2012-03-01)
Welded joints of airframes critical to the flight-safety are commonly repair welded during its operational live. In this study, the effect of up to three weld repairs by gas tungsten arc welding (GTAW) on the axial fatigue ...
Investigation of the metal/porcelain interface in LASER-welded Ni-Cr-Mo alloy
(2009-07-22)
The interface formed between the metal and the porcelain of laser-welded Ni-Cr-Mo alloy was studied on a metallurgical basis. The characterization was carried out by using optical microscope, electron scan microscopy and ...
Mechanical Strength and Analysis of Fracture of Titanium Joining Submitted to Laser and Tig Welding
(Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, 2012-11-01)
This study compared the tensile strength and fracture mechanism of tungsten inert gas (TIG) welds in cylindrical rods of commercially pure titanium (cp Ti) with those of laser welds and intact samples. Thirty dumbbell-shaped ...
Fatigue strength of tungsten inert gas-repaired weld joints in airplane critical structures
(Elsevier B.V. Sa, 2011-06-01)
In this work the effect of Gas Tungsten Arc Welding (GTAW) repairs on the axial fatigue strength of an AISI 4130 steel welded joint used in airframe critical to the flight-safety was investigated. Fatigue tests were performed ...
Mechanical and microstructural characterization of laser-welded joints of 6013-T4 aluminum alloy
(Springer, 2015-01-01)
Laser beam welding may be used in the place of the traditional riveting process for the welding of the stringers to the skin in aircrafts. This work intends to investigate the mechanical behavior of laser-welded aluminum ...
Assessment of the interlaminar strength of resistance-welded PEI/carbon fibre composite
(2018-02-01)
This study has as its main objective to evaluate the effectiveness of the welding process by electrical resistance in a composite poly (ether-imide) matrix reinforced with continuous fibres of carbon, from the study of the ...
Tensoes Residuais na Soldagem, Aspectos Basicos
(1995-12-01)
The purpose of this paper is to analyze the basic aspects of the residual stresses in welding. Concepts about macro and micro residual stresses in metals are considered in welding. In a simple welding model is shown how ...
Corrosion assessment of ASME qualified welding procedures for grade 2101 lean duplex stainless steel
(2019-01-01)
ASME qualified welding procedures do not guarantee suitable corrosion and passivation properties for lean duplex stainless steel welds. An evaluation of two ASME qualified welding procedures to optimize the corrosion ...
Considerations about the welding repair effects on the structural integrity of an airframe critical to the flight-safety
(Elsevier B.V., 2010-01-01)
Structures critical to the flight-safety are commonly submitted to several maintenance repairs at the welded joints in order to prolong the in-service life of aircrafts. The aim of this study is to analyze the effects of ...
Friction Stir Welding Of Duplex Stainless Steels
(Associação Brasileira de SoldagemSão Paulo, 2016)