Hae LUTPubista
Aineistot 11-20 / 20
Use of the quasi-static Johnson-Cook model in the failure assessment of tensile specimens with metallurgical constraints
(Elsevier, 2020-04-10)
Direct quenching has recently been used to develop cost-effective novel high and ultra-high strength steels. In weldments made of these steels, a distinct soft zone, which can lower the ultimate strength and deformation ...
Fatigue strength of misaligned non-load-carrying cruciform joints made of ultra-high-strength steel
(Elsevier, 2020-09-13)
Misalignments and distortions in welded plate components act as stress raisers and can significantly decrease the fatigue strength of welded connections. This paper investigates the effect of the plate misalignment of ...
Mechanical properties and microstructural evaluation of the heat-affected zone in ultra-high strength steels
(Elsevier, 2020-09-17)
This paper presents an investigation into the mechanical properties of ultra-high strength steels (UHSSs) (with nominal yield stress of 960 and 1100 MPa) after welding. Seven weld thermal cycles were simulated using a ...
Fatigue strength of longitudinal load-carrying welds in beams made of ultra-high-strength steel
(Elsevier, 2021-02-06)
The present study experimentally investigates the fatigue strength of longitudinally loaded welded joints in beam structures made of ultra-high-strength steel. Hereby, the effects of different manufacturing methods and ...
Mechanical properties of butt-welded ultra-high strength steels at elevated temperatures
(Elsevier, 2022-09-09)
Variety of ultra-high strength steels (UHSS) with different microstructural characteristics is becoming available with continuous development of the manufacturing process in the steel industries. In order to effectively ...
Fatigue strength characterization of high and ultra-high-strength steel cut edges
(Elsevier, 2020-12-04)
This paper investigates the fatigue strength characteristics of CO2 laser, fiber laser and plasma cut edges of S690 and S1100 steel grades. The effect on fatigue performance of surface quality, which was examined by contact ...
Re-evaluation of weld root fatigue strength for load-carrying fillet welded joints using the notch stress concept
(Elsevier, 2020-12-09)
The re-evaluation of fatigue strength, applying nominal and notch stress concepts has been carried out, using extracted experimental fatigue data for load-carrying fillet welded joints failing from weld root. Various ...
Fatigue strength assessment of ground fillet-welded joints using 4R method
(Elsevier, 2020-08-29)
In the present paper, a fatigue analysis for welded joints made of mild, and high- and ultra-high-strength steel grades and post-weld-treated with grinding and combined grinding and peening methods is carried out using ...
Fatigue strength assessment of TIG-dressed ultra-high-strength steel fillet weld joints using the 4R method
(Elsevier, 2020-06-10)
Post-weld treatments can enhance the fatigue strength of weldments by means of improving their geometry or residual stresses, or both. In this study, the fatigue strength of TIG-dressed non-load-carrying cruciform joints ...
CFRP strengthening of butt-welded ultra-high strength steels under quasi-static tensile loading
(Elsevier, 2021-08-25)
Due to the softening at the heat-affected zone (HAZ) in ultra-high strength steels (UHSS), the mechanical properties can deteriorate depending on the steels’ grade, welding heat input, and its associated cooling rate. ...