Basic Study on Laser Forming of Curved Surfaces with Simulation

Kishida, Ken; Nakamura, Tadahisa; Aoyama, Hideki; Matsushita, Naohisa; Ushimaru, Akihiko

doi:10.20965/ijat.2013.p0024

Int. J. Automation Technol.

2013

DOI: 10.20965/ijat.2013.p0024

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Basic Study on Laser Forming of Curved Surfaces with Simulation

Ken Kishida¹,

Tadahisa Nakamura²,

Hideki Aoyama³

et al.

Abstract: Laser forming is a technology that produces plastic deformations in sheet materials by generating local heat stress. It is useful for prototype or small-quantity production because it does not require dies or molds. Although many studies on laser forming have been done, few have been on forming curved shapes. This paper deals with a method for generating the scanning paths and determining the scanning conditions for laser forming of a curved shape. The scanning paths are derived as the maximum and minimum curv… Show more

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Cited by 3 publications

References 8 publications

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Moiré Techniques Based on Memory Function of Laser Scanning Microscope for Deformation Measurement at Micron/Submicron Scales

Wang¹,

Tsuda²,

Kishimoto³

et al. 2015

Int. J. Automation Technol.

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This paper presents two up-to-date moiré techniques for deformation measurement based on the memory function of a laser scanning microscope (LSM). The two techniques are the LSM overlapping moiré method and the LSM secondary moiré method. The formation principles and the measurement principles of these two methods are presented and compared to those of the traditional scanning moiré method for the first time. The applicable conditions and characteristics of these three moiré techniques are analyzed. Some typical moiré fringes on a strain gauge, carbon fiber reinforced plastics, a polyimide film, and a silicon wafer are illustrated. Our proposed LSM overlapping moiré method and LSM secondary moiré method are able to expand the application range of the LSM in deformation measurement to the micron and the submicron scales.

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Moiré Techniques Based on Memory Function of Laser Scanning Microscope for Deformation Measurement at Micron/Submicron Scales

Wang¹,

Tsuda²,

Kishimoto³

et al. 2015

Int. J. Automation Technol.

View full text Add to dashboard Cite

show abstract

Development of Warm-Press-Forming Method of CFRTP Motor Vehicle Floors with Complicated Shapes

Kurose¹,

Nakamura²,

Nishi³

et al. 2017

Int. J. Automation Technol.

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In this paper, some large automotive parts with complex shapes are produced to report the results of our efforts to develop press molding technologies for thermoplastic carbon fiber-reinforced plastic (CFRTP). Members of industry, academia, and the government collaborated to realize this project. The project includes a molding experiment, CAE analysis, and material strength measurements. In the material test, a tensile test, bending test, heat distortion test, and torsion test are carried out to produce several stress-strain curves. Applying the new analytical model in the simulation shows that accuracy is improved. As a result, by measuring the temperature change during the forming of complex shapes, a large automotive part with a complex shape was successfully molded in a short time. Other productivity improvements are also reported on.

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Curved Surfaces Forming of Sheet Material by Laser Irradiation

Kishida

Aoyama

Mastushita

et al. 2014

AMR

Self Cite

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Laser forming is a technology which can form sheet material such as steel and plastic by irradiating a laser beam on the surfaces of material. In the forming, it does not need costly dies and molds, and forming degrees of freedom are high. However, since the forming mechanisms are complex, complete forming technology for practical use has not been developed. The objectives of this paper are to explain phenomena of laser forming by experiments and FEM analysis and to develop a forming method of curved surfaces by laser forming. The phenomena are explained by the temperature change, stress change, and plastic strain change at a laser irradiation point which was obtained by FEM analysis. Line energy is proposed for explanation of laser forming phenomena to classify the forming mechanisms, and a method is proposed in order to form curved surfaces of sheet material by irradiating a laser beam on maximum and minimum curvature lines. The effectiveness of the method was verified by a basic experiment.

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Basic Study on Laser Forming of Curved Surfaces with Simulation

Cited by 3 publications

References 8 publications

Moiré Techniques Based on Memory Function of Laser Scanning Microscope for Deformation Measurement at Micron/Submicron Scales

Moiré Techniques Based on Memory Function of Laser Scanning Microscope for Deformation Measurement at Micron/Submicron Scales

Development of Warm-Press-Forming Method of CFRTP Motor Vehicle Floors with Complicated Shapes

Curved Surfaces Forming of Sheet Material by Laser Irradiation

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