On the evolution of welding residual stress after milling and cutting machining

Dattoma, V.; Giorgi, M. De; Nobile, R.

doi:10.1016/j.compstruc.2006.08.008

Cited by 34 publications

(21 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the structural effects are restricted locally, provided that no reinforcing element is embedded in the machined zone. Furthermore, the magnitude of these effects is small and negligible if heat dominated manufacturing processes are involved [18]. Additionally, these assumptions are corroborated by the results of the simulation of the milling process shown above.…”

Section: Simulation Fundamentalssupporting

confidence: 58%

Integrated simulation of the process chain composite extrusion–milling–welding for lightweight frame structures

Zaeh

Tekkaya

Biermann

et al. 2009

Prod. Eng. Res. Devel.

View full text Add to dashboard Cite

Generally, the manufacturing of lightweight frame structures involves various processes that yield the final product. Simulation methods can be used to optimise the different process steps. When chaining these process steps together in the simulation, software interfaces become necessary to realise an integrated virtual process chain. In this paper two approaches are presented that solve this issue and demonstrate it for an exemplary part. Different software tools with appropriate interfaces and the use of only one software tool for the simulation of the whole process chain are investigated respectively. The results of both approaches are analysed and relevant conclusions are deduced.

show abstract

Section: Simulation Fundamentalssupporting

confidence: 58%

Integrated simulation of the process chain composite extrusion–milling–welding for lightweight frame structures

Zaeh

Tekkaya

Biermann

et al. 2009

Prod. Eng. Res. Devel.

View full text Add to dashboard Cite

show abstract

“…This width is sufficiently high to neglect significant changes in transversal residual stress distribution. It was numerically shown in literature [20] that cutting the transversal joints, starting from the whole plate, does not alter stress distribution, but further reduces peak values.…”

Section: Geometry and Methodsmentioning

confidence: 98%

“…A numerical model for the prediction of the modifications produced in the residual stress field is discussed extensively in literature [20]. In this paper, the authors show that peak values of longitudinal residual stress are reduced by about 50%, and that they are localized in the Heat Affected Zone.…”

Section: Geometry and Methodsmentioning

confidence: 98%

“…As explicitly reported in the literature [13], the influence of residual stress on the fatigue life of welded joints is inconsistent; specifically, some studies show the existence of an alteration of the fatigue behaviour of welded parts, while other studies show no effect [14][15][16]. Furthermore, other works by the authors [17][18][19][20][21] do not allow a reliable clarification of the problem. It is, in general, true that, qualitatively, the effects depend on the relationship between residual and applied stress.…”

Section: Introductionmentioning

confidence: 99%

“…It is also important to note that the resulting residual stress field is altered after machining with respect to as-welded joints [22][23][24][25][26][27][28][29]. This is numerically shown in the literature [20]. This fact does not influence the aim of the experimental work, which is completely devoted to the evaluation of residual stress effects on fatigue.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Some considerations about fatigue failure in milled butt-welded joints affected by residual stress

2010

Self Cite

View full text Add to dashboard Cite

Many factors are involved in determining the fatigue strength of welded joints. It is, however, very difficult to consider their relative importance. The aim of this paper is to isolate the effect of residual stress from other factors, establishing a relation between the amount of residual stress and fatigue life. A geometrical notch due to the weld bead is removed by milling the upper surface of the welded plates. Moreover, specimens are subjected to four-point bend loading. Before conducting the fatigue test, the magnitude of residual stress for each specimen is experimentally evaluated, and then linked to the number of cycles to failure. This relation is analyzed for three different plate thicknesses and for different stress amplitude levels in the high cycle regime. The results clearly show the significant influence of residual stress on fatigue behaviours when the load level is near the fatigue limit.

show abstract

Carbon Nanotubes‐Polyurethane Vitrimer Nanocomposites with the Ability of Surface Welding Controlled by Heat and Near‐Infrared Light

Yan

Zhao

Wang

et al. 2017

Macro Chemistry & Physics

View full text Add to dashboard Cite

Welding technology of polymer materials, serving as an exceedingly good tactics to save materials, reduce cost, and reduce material loss, is only extensively applied in thermoplastic materials for the moment. Recently, a new class of polymer, known as vitrimer, has attracted the eye of researchers because it realizes the reprocessing and reshape of thermosets and possesses many excellent functions, such as multishape memory, healing, and surface welding. Among these, the vitrimer makes the surface welding of thermosetting material possible. In this paper, carbon nanotubes‐polyurethane vitrimer nanocomposites with the capability of surface welding controlled by heat and near‐infrared (NIR) light are successfully prepared. Here, the effects of surface welding are characterized by lap shear tests and optical microscope. In addition, from the control experiments, it is found that the shear strength of the light‐welding sample under NIR illumination for 1 min is greater than that of the heat‐welding sample at 110 °C for 10 min. Furthermore, thermosetting polyurethane has been applied in many fields, and it is hoped that the findings, especially near‐infrared welding technology, will make some contributions for welding technology of polymer.

show abstract

On the evolution of welding residual stress after milling and cutting machining

Cited by 34 publications

References 20 publications

Integrated simulation of the process chain composite extrusion–milling–welding for lightweight frame structures

Integrated simulation of the process chain composite extrusion–milling–welding for lightweight frame structures

Some considerations about fatigue failure in milled butt-welded joints affected by residual stress

Carbon Nanotubes‐Polyurethane Vitrimer Nanocomposites with the Ability of Surface Welding Controlled by Heat and Near‐Infrared Light

Contact Info

Product

Resources

About