scholarly journals Fracture Behavior of Solid-State Welded Joints

2020 ◽  
Author(s):  
Dattaguru Ananthapadmanaban ◽  
K. Arun Vasantha Geethan
Keyword(s):  
Solid State ◽  
Welded Joints ◽  
Fracture Behavior

206 Fatigue Fracture Behavior of Two Types of Spot Welded Joints Subjected to Shear Loading

2009 ◽  
Vol 2009.58 (0) ◽  
pp. 87-88
Author(s):  
Takahiro YAMAMOTO ◽  
Keiichiro TOHGO ◽  
Yoshinobu SHIMAMURA ◽  
Hiroyasu ARAKI ◽  
Hiroya ITOH ◽  
...  
Keyword(s):  
Fatigue Fracture ◽  
Welded Joints ◽  
Fracture Behavior ◽  
Shear Loading ◽  
Fatigue Fracture Behavior ◽  
Spot Welded

Ti–6Al–4V welded joints via electron beam welding: Microstructure, fatigue properties, and fracture behavior

2014 ◽  
Vol 597 ◽  
pp. 225-231 ◽  
Author(s):  
Xiaoguang Yang ◽  
Shaolin Li ◽  
Hongyu Qi
Keyword(s):  
Electron Beam ◽  
Welded Joints ◽  
Fracture Behavior ◽  
Electron Beam Welding ◽  
Fatigue Properties

Investigation of ductile fracture behavior of lap-welded joints with 460 MPa steel

2017 ◽  
Vol 21 (9) ◽  
pp. 1376-1387 ◽  
Author(s):  
Gang Shi ◽  
Yufeng Chen
Keyword(s):  
Ductile Fracture ◽  
Welded Joints ◽  
High Strength Steel ◽  
Fracture Behavior ◽  
Steel Structures ◽  
High Strength ◽  
Welded Steel ◽  
Fracture Parameters ◽  
Tension Tests ◽  
Micromechanics Models

Fractures in welded connections usually occurred at Earthquake. The lap-welded joints are an important type of welded connections in high strength steel structures. In this article, the ductile fracture behavior of lap-welded joints has been studied experimentally and numerically with 460 MPa steel. A series of coupon tests were used to determine two corresponding weld materials (ER55-D2 and ER55-G) mechanical properties. Two micromechanics models (void growth model and stress-modified critical strain models) had been calibrated by circumferentially notched tension specimens and calculated the fracture parameters numerically, which had been applied in predicting in five lap-welded joints. The experimental study showed that the fracture mode of 460 MPa lap-welded joints exhibited plastic damage under the tension tests. Numerical analysis of the fracture parameters also showed that the ductile fracture behavior of lap-welded joint with ER55-G was better. The study establishes an accurate numerical model for analyzing the ductile fracture behavior of Q460 high strength steel lap-welded joints that is applicable in predicting the fracture failure of welded steel structures.

3D optical measurement and numerical simulation of the fracture behavior of Al6061 laser welded joints

2019 ◽  
Vol 206 ◽  
pp. 501-508
Author(s):  
Haoyun Tu ◽  
Siegfried Schmauder ◽  
Yan Li
Keyword(s):  
Numerical Simulation ◽  
Welded Joints ◽  
Fracture Behavior ◽  
Optical Measurement ◽  
3D Optical Measurement

scholarly journals Influence of Normalization on Impact Fracture Behavior of Friction-Welded Joints. Examination with 0.46%C Carbon Steel.

1996 ◽  
Vol 62 (602) ◽  
pp. 2236-2241 ◽  
Author(s):  
Masanori KATO ◽  
Chuji KAGAYA ◽  
Yukihiro KAWAGUCHI ◽  
Hiroshi TOKISUE
Keyword(s):  
Carbon Steel ◽  
Welded Joints ◽  
Fracture Behavior ◽  
Impact Fracture ◽  
Impact Fracture Behavior

A Non-Conventional Technique for Evaluating Welded Joints Based on the Electrical Conductivity

2014 ◽  
Vol 611-612 ◽  
pp. 671-676 ◽  
Author(s):  
Telmo G. Santos ◽  
Gonçalo Sorger ◽  
Pedro Vilaça ◽  
R.M. Miranda
Keyword(s):  
Electrical Conductivity ◽  
Solid State ◽  
Welded Joints ◽  
Conventional Technique ◽  
Carbon Steels ◽  
Fusion Welding ◽  
Friction Stir ◽  
Wide Range ◽  
Welding Processes ◽  
Non Destructive

Recent studies showed that electrical conductivity is a valuable technique to identify the different zones of solid-state welded joints with a good correlation with the microstructure and hardness. This is a relevant result since this technique is expedite and, in some cases, non destructive. The concept was applied to other welding processes as the ones involving fusion and to a wide range of materials. For this, a comprehensive study was performed using friction stir welding, tungsten inert gas (TIG) and gas metal arc (MAG) welding processes in either bead on plate or butt joints in: carbon steel, magnesium and titanium. Eddy current non-destructive testing (NDT) was used to measure the electrical conductivity at different depths in transverse sections of the processed materials. The obtained profiles were compared to the hardness profiles in the same sections. As a result, a good correlation was observed in most materials welded by solid state and by fusion processes. The variation of the electrical conductivity closely follows the one detected in the hardness. Another interesting conclusion is that, even for fusion welding of carbon steels, the technique has potential to complement the hardness measurements and microstructural observations, allowing to identify the distinct zones of welds in materials commonly used in industry.

scholarly journals Influence of the moisture content on the fracture characteristics of welded wood joint. Part 1: Mode I fracture

Holzforschung ◽  
2013 ◽  
Vol 67 (7) ◽  
pp. 747-754 ◽  
Author(s):  
Martin Rhême ◽  
John Botsis ◽  
Joël Cugnoni ◽  
Parviz Navi
Keyword(s):  
Moisture Content ◽  
Welded Joints ◽  
Fracture Behavior ◽  
Element Model ◽  
Mode I ◽  
Cohesive Law ◽  
Fracture Characteristics ◽  
Wood Joint ◽  
Negative Effect ◽  
Effect Of Moisture

Abstract Friction welding is a joining technique for wood materials. The positive aspects of this technique are the speed of processing and the absence of chemical or mechanical agents, but the welded joints are not water resistant. To understand better the effect of moisture on the fracture behavior of welded joints, their fracture characteristics have been investigated. The double cantilever beam specimens were tested, which permit to compute the mode I energy release rate of a welded joint. The results confirm the negative effect of moisture on the fracture properties of the joint. The data concerning the maximal tensile strength of the joining material were collected by uniaxial tests and implemented in a finite element model to establish a cohesive law, which describes the behavior of welded pieces in terms of moisture content.

Effect of a Single Overload on the Fracture Behavior in Safe-End Dissimilar Metal Welded Joints in Nuclear Power Plant

2014 ◽  
Vol 1049-1050 ◽  
pp. 600-604
Author(s):  
He Xue ◽  
Yuan Kui Gui ◽  
Wei Bing Wang ◽  
Xiao Bo Li ◽  
Ying Ru Wang ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Tensile Stress ◽  
Pressure Vessel ◽  
Welded Joints ◽  
Nuclear Power ◽  
Fracture Behavior ◽  
Welded Joint ◽  
Dissimilar Metal ◽  
Single Overload

To understand the effect of a single overload on the fracture behavior in welded joints, the stress and strain field at the crack tip in a safe-end dissimilar metal welded joint in nuclear pressure vessel is simulated and analyzed by using the elastic-plastic finite element method in the paper, in which the mechanical heterogeneity in welded joint is emphatically considered. The investigating results indicate that the tensile plastic strain at crack tip increases, but the tensile stress decreases as a single overload increases, and the influence of a single overload on tensile strain is larger than one on tensile stress, which provide a theoretical basis for quantitatively estimating the crack growth rate of environmentally assisted cracking in the welded structural material of pressure vessel and piping in the nuclear power plant.

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