Experimental investigations and statistical analysis of pulsed laser bending of AISI 304 stainless steel sheet

Maji, Kuntal; Pratihar, Dilip Kumar; Nath, Ashish Kumar

doi:10.1016/j.optlastec.2012.12.006

Cited by 47 publications

(10 citation statements)

References 11 publications

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“…This feature is similar to laser bending. Laser rapid heating effect on materials of laser bending is studied by a group of scholars [13][14][15][16][17][18]. The research of Shen [16] is typical among these studies.…”

Section: Materials Performance Studies Of Formed Sheetsmentioning

confidence: 99%

Laser bending process of preloaded sheet metal

Wan

et al. 2015

MATEC Web of Conferences

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Abstract. Laser bending process of preloaded sheet metal was reviewed on theoretical researches, forming experiments, numerical simulations and material performance studies of formed sheets. Considering the pre-bending platforms that used in the forming experiments can only work on few simple pre-bending types and small sized sheet metals, a large and flexible pre-bending platform was developed by authors. Experiments were done on this platform. The results of experiments showed that different prebending types lead to bending sheet metals into different curved shapes and large sized structure components of flight vehicles can be formed using this process. Based on the current research status, further developments and challenges of this process are discussed.

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Section: Materials Performance Studies Of Formed Sheetsmentioning

confidence: 99%

Laser bending process of preloaded sheet metal

Wan

et al. 2015

MATEC Web of Conferences

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“…In terms of the experiment, Carey et al [8] investigated the effect of a number of variables including stacking sequence and fiber layer parameters on laser forming for fiber metal laminates. Maji et al [9] used a response surface methodology to determine the relationship between the bending angle of an AISI 304 stainless steel plate and the process variables and analyzed statistically the effects of process parameters. Ma et al [10] measured the grain size of the carbon steel layer in the bending zone of SCLP by image processing software from the perspective of material detection.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Stainless Steel-Carbon Steel Laminated Plate Considering Interface in Pulsed Laser Bending

Wang

2019

Materials

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According to ANSYS software and an electron probe experiment, a multi-layer finite element model (FEM) of pulsed laser bending of stainless steel-carbon steel laminated plate (SCLP) including interfaces has been established. Compared with a single-layer stainless steel plate (SLSP), based on a temperature gradient mechanism considering the depth of the plastic zone, the influence of the interfaces and carbon steel layer in the model of the SCLP on the bending angle has been studied by analyzing the distributions of the temperature field, stress field and strain field in the thickness direction. The simulation results show that the temperature of the SCLP in the thickness direction is lower than that of the SLSP due to interfacial thermal resistance of the interface and fast heat conduction of the carbon steel layer, resulting in a smaller depth of the plastic zone of the SCLP defined by the recrystallization temperature. Affected by the temperature distribution, the plastic stress and strain of the SCLP in the plastic zone are smaller than those of the SLSP, leading to a smaller bending angle of the SCLP. When the laser power is 140 W, the scanning speed is 400 mm/min, the defocus distance is 10 mm, and the scanning time is 1, the bending angle of the SCLP is 1.336°, which is smaller than the bending angle 1.760° of the SLSP. The experimental verifications show that the maximum error of the bending angle is 3.74%, which verifies that the model of laser bending is usable and contributes to refining the laser bending mechanism of the SCLP.

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“…Also, increase in sheet thickness, scan speed, and pass number leads to decrease of longitudinal distortion. Pulsed laser bending of AISI 304 stainless steel sheet was investigated by Maji et al 15 They presented an optimum quantity of process parameters to achieve the maximum bending angle in these sheets. Safari and Farzin 16 studied LF of tailor machine blanks (TMBs).…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of parameters effect on laser forming of Al6061-T6 sheets

Roohi

Naeini

Gollo

2015

Proceedings of the Institution of Mechanical Engineers, Part L:

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Laser forming, which is categorized as a thermal forming process, is used in forming and bending of metallic and nonmetallic sheets. Laser beam irradiation causes a localized temperature increase and a localized mechanical strength decrease. In this article, the effects of four process parameters, comprising laser power, scan velocity, the number of scan passes, and sheet thickness, on laser forming of Al6061-T6 sheets are studied. A design of experiment, including response surface methodology, is carried out to limit the experimental runs and costs and to identify the parameter effects on the bending angle of the sheet. Experiment results show that bending angle increases due to the decrease of scan velocity and sheet thickness. In addition, laser power and number of scan passes have a direct relation with a final sheet forming. KeywordsLaser forming process, Al6061-T6 aluminium alloy, design of experiment, bending angle Date

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Experimental investigations and statistical analysis of pulsed laser bending of AISI 304 stainless steel sheet

Cited by 47 publications

References 11 publications

Laser bending process of preloaded sheet metal

Laser bending process of preloaded sheet metal

Numerical Simulation of Stainless Steel-Carbon Steel Laminated Plate Considering Interface in Pulsed Laser Bending

An experimental investigation of parameters effect on laser forming of Al6061-T6 sheets

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