scholarly journals Polyurethanes (Dombrow, Bernard A.); Polyamide Resins (Floyd, Donald E.); Plastic Sheet Forming (Butzko, Robert L.)

1958 ◽  
Vol 35 (7) ◽  
pp. A323
Author(s):  
Thomas Ferington
Keyword(s):  
Sheet Forming ◽  
Plastic Sheet

PVC Sheet Blow Forming Finite Element Simulation and Experimental Study

2011 ◽  
Vol 467-469 ◽  
pp. 1846-1851 ◽  
Author(s):  
Chao Zheng ◽  
Yi Sheng Zhang ◽  
De Qun Li
Keyword(s):  
Finite Element ◽  
Complex Geometry ◽  
Experimental Testing ◽  
Thickness Distribution ◽  
Dimensional Accuracy ◽  
Sheet Forming ◽  
Forming Process ◽  
Plastic Sheet ◽  
Element Simulation

The plastic sheet forming technique is simple and easy to realize, that is why, it is widely used for packaging commodities. Similarly, in In-Mold-Decoration (IMD) molding technology, due to the complex geometry of the membrane and the high requirement of the dimensional accuracy, geometric design and molding technique for the product should be focused on controlling the thickness distribution of shell or membrance plastic products in order to achieve high precision manufacturing. This paper started with analyzing the performance data of the plastic sheet molding material, using nonlinear finite element method and multi-physics coupling method to simulate the plastic sheet forming process, and the result gives the required parameters for product design and quality control. For the thickness deviation, the experimental testing shows that the maximum discrepancy between the simulation and actual result is less than15%. The research proved that computer simulation can contribute to control the inhomogeneity of the shell or membrane so as to improve the design and the quality of manufacturing.

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.

scholarly journals STUDIES OF HEMOLYSIS WITH A PLASTIC-SHEET BUBBLE OXYGENATOR

1958 ◽  
Vol 36 (1) ◽  
pp. 23-32
Author(s):  
Eduard W. Ferbers ◽  
John W. Kirklin
Keyword(s):  
Plastic Sheet ◽  
Bubble Oxygenator

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
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