scholarly journals Flexible Manufacturing of Concave–Convex Parts by Incremental Sheet Forming with Active Medium

2021 ◽  
pp. 549-561
Author(s):  
Sebastian Thiery ◽  
Noomane Ben Khalifa
Keyword(s):  
Active Medium ◽  
Flexible Manufacturing ◽  
Sheet Forming ◽  
Incremental Sheet Forming

scholarly journals Incremental sheet forming of thermoplastics: a review

2020 ◽  
Vol 111 (1-2) ◽  
pp. 565-587
Author(s):  
Hui Zhu ◽  
Hengan Ou ◽  
Atanas Popov
Keyword(s):  
Process Parameters ◽  
Flexible Manufacturing ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Metallic Materials ◽  
Processing Conditions ◽  
Geometric Accuracy ◽  
Significant Progress ◽  
Research Directions ◽  
Made In

Abstract Incremental sheet forming (ISF) is a promising flexible manufacturing process, which has been tested in sheet forming of various metallic materials. Although ISF-based forming of thermoplastics is relatively new, it has drawn considerable interests and significant progress has been made in recent years. This paper presents a review of concurrent research on the emerging trend of thermoplastic-focused ISF processes. Attention is given to the processing conditions including process setup, process parameters and forming forces. The deformation mechanism and failure behaviour during ISF of thermoplastics are evaluated, which leads to detailed discussions on the formability, effect of different process parameters and the forming quality such as geometric accuracy, surface finish and other consideration factors in ISF of thermoplastics. A comparison of important similarities and differences between ISF of thermoplastic and metallic materials is made. Finally, a brief discussion is provided on the technical challenges and research directions for ISF of thermoplastic materials in the future.

Incremental sheet forming with active medium

CIRP Annals ◽  
2019 ◽  
Vol 68 (1) ◽  
pp. 313-316 ◽  
Author(s):  
Noomane Ben Khalifa ◽  
Sebastian Thiery
Keyword(s):  
Active Medium ◽  
Sheet Forming ◽  
Incremental Sheet Forming

scholarly journals Closed-loop control of product geometry by using an artificial neural network in incremental sheet forming with active medium

2020 ◽  
Author(s):  
S. Thiery ◽  
M. Zein El Abdine ◽  
J. Heger ◽  
N. Ben Khalifa
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Active Medium ◽  
Closed Loop ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Closed Loop Control ◽  
Loop Control ◽  
Geometrical Accuracy ◽  
Artificial Neural

AbstractA strategy to adjust the product geometry autonomously through an online control of the manufacturing process in incremental sheet forming with active medium is presented. An axial force sensor and a laser distance sensor are integrated into the process setup to measure the forming force and the product height, respectively. Experiments are conducted to estimate the bulging behavior for different pre-determined tool paths. An artificial neural network is consequently trained based on the experimental data to continuously predict the pressure levels required to control the final product height. The predicted pressure is part of a closed-loop control to improve the geometrical accuracy of formed parts. Finally, experiments were conducted to verify the results, where truncated cones with different dimensions were formed with and without the closed-loop control. The results indicate that this strategy enhances the geometrical accuracy of the parts and can potentially be expanded to be implemented for different types of material and geometries.

Multiobjective optimization of process variables in single-point incremental forming using grey relational analysis coupled with entropy weights

2021 ◽  
pp. 146442072110204
Author(s):  
Abdulmajeed Dabwan ◽  
Adham E Ragab ◽  
Mohamed A Saleh ◽  
Atef M Ghaleb ◽  
Mohamed Z Ramadan ◽  
...  
Keyword(s):  
Grey Relational Analysis ◽  
Incremental Forming ◽  
Single Point ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Numerical Control ◽  
Single Point Incremental Forming ◽  
Process Variables ◽  
Relational Analysis ◽  
Grey Relational

Incremental sheet forming is a specific group of sheet forming methods that enable the manufacture of complex parts utilizing computer numerical control instead of specialized tools. It is an incredibly adaptable operation that involves minimal usage of sophisticated tools, dies, and forming presses. Besides its main application in the field of rapid prototyping, incremental sheet forming processes can be used for the manufacture of unique parts in small batches. The goal of this study is to broaden the knowledge of the deformation process in single-point incremental forming. This work studies the deformation behavior in single-point incremental forming by experimentally investigating the principal stresses, principal strains, and thinning of single-point incremental forming products. Conical-shaped components are fabricated using AA1050-H14 aluminum alloy at various combinations of fundamental variables. The factorial design is employed to plan the experimental study and analysis of variance is conducted to analyze the results. The grey relational analysis approach coupled with entropy weights is also implemented to identify optimum process variables for single-point incremental forming. The results show that the tool diameter has the greatest effect on the thinning of the SPIF product, followed by the sheet thickness, step size, and feed rate.

The influence of ultrasonic vibration on parts properties during incremental sheet forming

2021 ◽  
Author(s):  
Yan-Le Li ◽  
Zi-Jian Wang ◽  
Wei-Dong Zhai ◽  
Zi-Nan Cheng ◽  
Fang-Yi Li ◽  
...  
Keyword(s):  
Ultrasonic Vibration ◽  
Sheet Forming ◽  
Incremental Sheet Forming

scholarly journals Development of novel tools for electricity-assisted incremental sheet forming of titanium alloy

2015 ◽  
Vol 85 (5-8) ◽  
pp. 1137-1144 ◽  
Author(s):  
Runze Liu ◽  
Bin Lu ◽  
Dongkai Xu ◽  
Jun Chen ◽  
Fei Chen ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Sheet Forming ◽  
Incremental Sheet Forming

scholarly journals An efficient method for thickness prediction in multi-pass incremental sheet forming

2014 ◽  
Vol 77 (1-4) ◽  
pp. 469-483 ◽  
Author(s):  
Tingting Cao ◽  
Bin Lu ◽  
Dongkai Xu ◽  
Huan Zhang ◽  
Jun Chen ◽  
...  
Keyword(s):  
Efficient Method ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Thickness Prediction
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