Laser forming of open-cell aluminium foams

Quadrini, Fabrizio; Guglielmotti, Alessandro; Squeo, Erica Anna; Tagliaferri, V.

doi:10.1016/j.jmatprotec.2010.04.010

Cited by 33 publications

(20 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different densities of AlSi7Mg open-cell foam aluminum and the effect of the main process parameters on the bending efficiency were investigated. Experimental results showed that the bending angle of open-cell aluminum foam [3] is quite different from closed-cell aluminum foam [2] under the same laser parameters. According to the theory of Coquard and Baillis [4], the difference has been attributed to the fact that thermal conductivity and other factors for open and closed-cell foam aluminum are different.…”

Section: Introductionmentioning

confidence: 94%

“…A good formability was observed for the laser processed panels and very high bending angles were reached with a proper combination of the process parameters. More recently, this study has been extended to open-cell Al foams by Quadrini et al [3]. Different densities of AlSi7Mg open-cell foam aluminum and the effect of the main process parameters on the bending efficiency were investigated.…”

Section: Introductionmentioning

confidence: 99%

“…These materials, however, are typically brittle under mechanical forming and shaping, and this fact severely limits their structure application. Recent studies [2,3] have shown that laser forming is feasible for foam panel forming.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental and Numerical Investigation of Laser Forming of Closed-Cell Aluminum Foam

Zhang

Chen

Brandal

et al. 2015

Journal of Manufacturing Science and Engineering

View full text Add to dashboard Cite

Aluminum foams are generally very attractive because of their ability of combining different properties such as strength, light weight, thermal, and acoustic insulation. These materials, however, are typically brittle under mechanical forming, and this severely limits their use. Recent studies have shown that laser forming is an effective way for foam panel forming. In this paper, the laser formability of Al–Si closed-cell foam through experiments and numerical simulations was investigated. The bending angle as a function of the number of passes at different laser power and scan velocity values was investigated for large- and small-pore foams. In the finite element analysis, both effective-property and cellular models were considered for the closed-cell foam. Multiscan laser forming was also carried out and simulated to study the accumulative effect on the final bending angle and stress states. The maximum von Mises stress in the scanning section was on the order of 0.8 MPa, which was lower than the yield strength of the closed-cell foam material. This paper further discussed the reasonableness and applicability of the two models.

show abstract

Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and Numerical Investigation of Laser Forming of Closed-Cell Aluminum Foam

Zhang

Chen

Brandal

et al. 2015

Journal of Manufacturing Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Previous studies have shown that laser forming can successfully bend metal foams as well. Guglielmotti et al [11] and Quadrini et al [12] investigated the feasibility of laser forming of Al-foam sandwich panels and open-cell Al-foams for different power levels, scanning speeds, sheet thicknesses, and foam densities. They found that laser forming of Al-foam is possible without cell collapse and skin delamination.…”

Section: Introductionmentioning

confidence: 99%

Effect of Geometrical Modeling on the Prediction of Laser-Induced Heat Transfer in Metal Foam

Bucher

Bolger

Zhang

et al. 2016

Journal of Manufacturing Science and Engineering

View full text Add to dashboard Cite

Over the past several decades, aluminum foam (Al-foam) has found increasing popularity in industrial applications due to its unique material properties. Unfortunately, till date Al-foam can only be affordably manufactured in flat panels, and it becomes necessary to bend the foam to the final shape that is required in engineering applications. Past studies have shown that thin cell walls crack and collapse when conventional mechanical bending methods are used. Laser forming, on the other hand, was shown to be able to bend the material without causing fractures and cell collapse. This study was focused on the thermal aspects of laser forming of closed-cell Al-foam. An infrared camera was used to measure the transient temperature response of Al-foam to stationary and moving laser sources. Moreover, three different numerical models were developed to determine how much geometrical accuracy is needed to obtain a good agreement with experimental data. Different levels of geometrical complexity were used, including a simple solid geometry, a Kelvin-cell based geometry, and a highly accurate porous geometry that was based on an X-ray computed tomography (CT) scan. The numerical results were validated with the experimental data, and the performances of the numerical models were compared.

show abstract

“…Recently, Lambiase et al [3] have shown that passive water cooling can drastically reduce cooling time between successive scans in multi-pass laser forming without affecting the final bending angle and thus, productivity can be improved. Quadrini et al [4] through experiments on laser bending of open-cell foam panels of AlSi7Mg (100 Â 30 Â 10 mm 3 ) with diode laser (940 nm wavelength) showed that with proper process parameters more than 50°bending angle could be generated in 150 scans without any crack, which could not be obtained by mechanical bending as the samples failed at much less bent angle. Guglielmotti et al [5] have also demonstrated the use of laser forming to bend aluminium foam sandwich panels.…”

Section: Introductionmentioning

confidence: 99%

Investigation on laser forming of stainless steel sheets under coupling mechanism

Chakraborty

Maji

Racherla

et al. 2015

Optics & Laser Technology

View full text Add to dashboard Cite

Laser forming of open-cell aluminium foams

Cited by 33 publications

References 12 publications

Experimental and Numerical Investigation of Laser Forming of Closed-Cell Aluminum Foam

Experimental and Numerical Investigation of Laser Forming of Closed-Cell Aluminum Foam

Effect of Geometrical Modeling on the Prediction of Laser-Induced Heat Transfer in Metal Foam

Investigation on laser forming of stainless steel sheets under coupling mechanism

Contact Info

Product

Resources

About