Strength analysis of fillet welds under longitudinal and transverse shear conditions

Lu, Hanqing; Dong, Ping; Boppudi, Srimanth

doi:10.1016/j.marstruc.2015.06.003

Cited by 33 publications

(6 citation statements)

References 6 publications

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“…In the first phase, a semi mechanized gas metal arc welding (GMAW or MAG) process was used, but, to reduce the scatter in the experimental results, a fully mechanized GMAW process was used in the second phase, which resulted in more coherent test results. The difference in strength for the transverse and longitudinal loading directions was also confirmed in [18]- [19] and later for stainless steel in [5]. The fracture angles in [18]- [19] for the transverse welds are considerably lower than the theoretical critical angle of 45° with failure angles around 20°, which could explain the higher strength.…”

Section: Reference Research On the Strength Of Stainless Steel Fillet Weldsmentioning

confidence: 63%

“…11) that a division into subsets based on loading direction and stainless steel family is reasonable since the correction factor b clearly differs in between subsets. Moreover, the longitudinal loading direction is the most critical direction in the design of fillet welds, which was also mentioned by numerous authors in the literature [5], [18], [19]. However, within these subsets the correction factor b remains inconsistent, resulting in high (to sometimes very high) coefficients of variation Vδ.…”

Section: Measurement Of the Weld Surfacementioning

confidence: 97%

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On the strength of stainless steel fillet welds

Fortan

Dejans

Karabulut

et al. 2020

Journal of Constructional Steel Research

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This paper describes 24 tests performed on welded specimens made of 3 stainless steel grades: EN 1.4307 (304L) and EN 1.4404 (316L) austenitic grades and EN 1.4062 duplex grade. For each grade, tests were carried out parallel to the weld and along the transverse direction. The austenitic grades were welded using GMAW (MAG), while the duplex grades were welded using Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW or TIG). After failure, the fracture surfaces were measured using Digital Image Correlation (DIC) and compared to measurements before testing. The results were compared to 70 experiments on welded stainless steel samples, gathered from the literature. A relatively high scatter was found among the different sources as well as differences between grades and loading directions. A reliability study was then performed in agreement with EN 1990EN :2002 Annex D on the complete experimental data pool and recommendations for the correlation factor βw are then provided.

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Section: Reference Research On the Strength Of Stainless Steel Fillet Weldsmentioning

confidence: 63%

Section: Measurement Of the Weld Surfacementioning

confidence: 97%

On the strength of stainless steel fillet welds

Fortan

Dejans

Karabulut

et al. 2020

Journal of Constructional Steel Research

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show abstract

“…It reaches, on average, 19% for the austenitic grades and 6% for the duplex grade. This difference was noticed by numerous authors in the literature [3,5,18,19].…”

Section: Assessment Of the Design Rulesmentioning

confidence: 84%

Experimental Study on the Strength of Stainless Steel Fillet Welds

Fortan

Dejans

Debruyne

et al. 2018

The 18th International Conference on Experimental Mechanics

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This paper describes 18 tensile tests performed on welded specimens made of 3 stainless steel grades: EN 1.4307 (304L) and EN 1.4404 (316L) austenitic grades and EN 1.4062 duplex grade. For each grade, 3 tests were carried out parallel to the weld causing shear stresses (in the weld throat plane, parallel to the weld throat axis) and 3 tests along the transverse direction, perpendicular to the weld, causing a combination of normal (perpendicular to the weld throat plane) and shear (in the weld throat plane, perpendicular to the weld throat axis) stresses. The digital image correlation (DIC) technique was used to measure the fracture surface. Based on these experiments, an assessment of the current design rules was made.

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“…Here, work is extended by creating the HSS by joining two L-shaped sections via a fillet web. The fillet weld is selected in this study because it provides high shear strength and is typically applied to join two pieces of metal perpendicularly with small joint preparation required [49], and the test setup can be used to mimic a plate-to-web orthogonal weld connection. Four specimens were constructed (numbered 0-3), equipped with the cSEC, and tested under the developed fatigue load protocol.…”

Section: Methodsmentioning

confidence: 99%

Investigation of textured sensing skin for monitoring fatigue cracks on fillet welds

Liu¹,

Laflamme²,

Li³

et al. 2022

Meas. Sci. Technol.

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Load-induced fatigue cracking in welds is a critical safety concern for steel transportation infrastructure, and the automation of their detection using commercial sensing technologies remains challenging due to the randomness in crack initiation and propagation. The authors have previously proposed a corrugated soft elastomeric capacitor (cSEC), which is a flexible and ultra-compliant thin-film strain gauge that transduces strain into a measurable change in capacitance. The cSEC technology has been successfully demonstrated for measuring bending strain as well as angular rotation in a folded configuration. This study builds on prior discoveries to characterize the sensor’s capability at monitoring fatigue cracks in corner welds, for which the sensor needs to be installed in a folded configuration. A crack monitoring algorithm is developed to fuse the cSEC data into actionable information. Experimental work is conducted on an orthogonal welded connection, mimicking a plate-to-web joint in steel bridges, with cSECs folded over the fillet welds. The sensor’s electromechanical behavior is characterized, and results confirm that the cSEC is capable of fatigue crack detection and quantification. In particular, results show that the cSEC can detect a minimum crack length of 0.48 mm and that its overall sensing performance, including signal linearity, resolution, and accuracy, is adequate under no damage, yet decreases with increasing crack size, likely attributable to the simplification of the electromechanical model and higher noise produced by the loading equipment under smaller applied displacement.

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Strength analysis of fillet welds under longitudinal and transverse shear conditions

Cited by 33 publications

References 6 publications

On the strength of stainless steel fillet welds

On the strength of stainless steel fillet welds

Experimental Study on the Strength of Stainless Steel Fillet Welds

Investigation of textured sensing skin for monitoring fatigue cracks on fillet welds

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