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"Duc-Toan Nguyen"

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"Duc-Toan Nguyen"

Articles
Application/Comparison Study of a Graphical Method of Forming Limit Curve Estimation for DP590 Steel Sheets
The-Thanh Luyen, Quoc-Tuan Pham, Young-Suk Kim, Duc-Toan Nguyen
J. Korean Soc. Precis. Eng. 2019;36(9):883-890.
Published online September 1, 2019
DOI: https://doi.org/10.7736/KSPE.2019.36.9.883
Since its introduction, the Modified Maximum Force Criterion proposed by Hora et al., has been widely used to theoretically estimate the forming limit curve of metal sheets. On the basis of this criterion, a graphical method was presented in our previous study to simplify the evaluation of the forming limit curve (FLC) of metal sheets. This paper presents an application of the graphical method to estimate the FLCs of an advanced high-strength steel sheet material, DP590. The material is frequently used in the automotive industry. To verify the ability of the graphical method, various hardening laws and yield functions were used to estimate the forming limiting curves for the examined material. The calculated forming limiting curves are then adopted for the finite element method (FEM) to predict the fracture heights of different notch specimens desired by the Hecker’s punch stretching tests. The results of the finite element method simulations agree well with the values of the fracture heights, in comparison to the experimental data. This verifies the ability and potential of the graphical method in industrial engineering.

Citations

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  • Simulation and experimental comparison study based on predicting forming limit curve of SUS304 sheet material
    The-Thanh Luyen, Thi-Bich Mac, Duc-Toan Nguyen
    Modern Physics Letters B.2023;[Epub]     CrossRef
  • Enhancing/Improving Forming Limit Curve and Fracture Height Predictions in the Single-Point Incremental Forming of Al1050 Sheet Material
    Trung-Kien Hoang, The-Thanh Luyen, Duc-Toan Nguyen
    Materials.2023; 16(23): 7266.     CrossRef
  • Investigating the impact of yield criteria and process parameters on fracture height of cylindrical cups in the deep drawing process of SPCC sheet steel
    The-Thanh Luyen, Thi-Bich Mac, Tien-Long Banh, Duc-Toan Nguyen
    The International Journal of Advanced Manufacturing Technology.2023; 128(5-6): 2059.     CrossRef
  • A simulation and experimental study on the deep drawing process of SPCC sheet using the graphical method
    The-Thanh Luyen, Van-Canh Tong, Duc-Toan Nguyen
    Alexandria Engineering Journal.2022; 61(3): 2472.     CrossRef
  • Graphical method based on modified maximum force criterion to indicate forming limit curves of 22MnB5 boron steel sheets at elevated temperatures
    The-Thanh Luyen, Quoc-Tuan Pham, Thi-Bich Mac, Tien-Long Banh, Duc-Toan Nguyen
    Journal of Iron and Steel Research International.2021; 28(8): 1009.     CrossRef
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A Study on Partitioning Freeform Surface and Tool Selection Method for 3-Axes CNC Machining
Bui Ngoc Tuyen, Hoang Van Quy, Duc-Toan Nguyen
J. Korean Soc. Precis. Eng. 2019;36(9):813-819.
Published online September 1, 2019
DOI: https://doi.org/10.7736/KSPE.2019.36.9.813
Freeform surfaces are widely used in various industries. However, they require much time to be machined because of complicated geometry. To increase machining productivity, partitioning methods for freeform surface have been proposed by several previous studies regarding selection of cutting tools and tool-path. This paper proposes a new partitioning method based on Gaussian and mean curvatures to define boundaries of local patches using Freeman algorithm. Simulation results with a B-Spline surface show that the proposed method combined with cutting tool selection strategies can reduce machining time and surface roughness when compared with the non-partitioned method.

Citations

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  • Simulation and experimental verification of the precision finishing method for optical free-form surface segmentation
    Chenhua Jiang, Enzhong Zhang, Wei Zhang, Jiaqi Hu, Jiechen Guo, Xiaodong Li, Jefferson Stafusa Elias Portela
    PLOS ONE.2025; 20(2): e0314489.     CrossRef
  • Free-Form Surface Partitioning and Simulation Verification Based on Surface Curvature
    Hongwei Liu, Enzhong Zhang, Ruiyang Sun, Wenhui Gao, Zheng Fu
    Micromachines.2022; 13(12): 2163.     CrossRef
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Study on Cutting Force and Chip Shrinkage Coefficient during Thermal - Assisted Machining by Induction Heating of SKD11 Steel
Thi-Bich Mac, Tien-Long Banh, Duc-Toan Nguyen
J. Korean Soc. Precis. Eng. 2019;36(9):803-811.
Published online September 1, 2019
DOI: https://doi.org/10.7736/KSPE.2019.36.9.803
In this work, we present an experimental study on cutting force and chip shrinkage coefficient during the milling of SKD11 steel at elevated temperatures using a high-frequency induction heating method. To improve the determination of the chip shrinkage coefficient, a 3D scanning method incorporating GOM Inspect 3D data analysis software was used to measure the chip length. To evaluate the effect of the heating process on output data such as chip geometry, cutting force, and chip shrinkage coefficient, cutting experiments were conducted at room and elevated temperatures with the same machining parameters of cutting speed, feed rate, and cutting depth. The Taguchi orthogonal array method was subsequently used for experimental design to obtain optimum values of the machining parameters. The analysis of variance method was also performed to indicate the percentage effect of the machining parameters on the cutting force and chip shrinkage coefficient. Finally, models of the cutting force and chip shrinkage coefficient during thermal-assisted milling of SKD11 were established and compared with experimental data.

Citations

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  • The influence of induction-assisted milling on the machining characteristics and surface integrity of γ-TiAl alloys
    Tao Fan, Changfeng Yao, Liang Tan, Yilong Cao, Yunqi Sun, Wenhao Tang
    Journal of Manufacturing Processes.2024; 118: 215.     CrossRef
  • Assessment of the Effect of Thermal-Assisted Machining on the Machinability of SKD11 Alloy Steel
    Thi-Bich Mac, The-Thanh Luyen, Duc-Toan Nguyen
    Metals.2023; 13(4): 699.     CrossRef
  • The Impact of High-Speed and Thermal-Assisted Machining on Tool Wear and Surface Roughness during Milling of SKD11 Steel
    Thi-Bich Mac, The-Thanh Luyen, Duc-Toan Nguyen
    Metals.2023; 13(5): 971.     CrossRef
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