Residual stresses and thermoviscoelastic deformation of laminated film prepared for film insert molding

2011 ◽  
Vol 52 (5) ◽  
pp. 1121-1127 ◽  
Author(s):  
Sung Ho Kim ◽  
Seong Yun Kim ◽  
Seung Hwan Lee ◽  
Jae Ryoun Youn
Keyword(s):  
Residual Stresses ◽  
Film Insert Molding ◽  
Insert Molding

Film Insert Molding of Automotive Door Grip Using Injection-Compression Molding

2014 ◽  
Vol 38 (7) ◽  
pp. 771-777 ◽  
Author(s):  
Ho Sang Lee ◽  
Young Gil Yoo ◽  
Tae An Kim
Keyword(s):  
Compression Molding ◽  
Film Insert Molding ◽  
Injection Compression Molding ◽  
Insert Molding

Method for Producing Three-Dimensional Designs in Film Insert Molding

2017 ◽  
Author(s):  
Shoko Fujii ◽  
Hideki Aoyama ◽  
Yukio Mori ◽  
Youichi Azagami ◽  
Syouji Harada
Keyword(s):  
Product Design ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Molding Method ◽  
Important Material ◽  
Design Generation ◽  
Film Insert Molding ◽  
Insert Molding ◽  
Plastic Products

Plastic is an important material in product design because it easily transforms, is very light, and has multifarious structural characteristics. Nevertheless, it gives the customer the impression of a cheap product. Therefore, decorative techniques are often applied to plastic products. Decorative techniques can improve the appearance of a plastic product while making use of its beneficial characteristics. At present, film insert molding method is predominantly used in decorating plastic products. In general, a designer creates a three-dimensional design but the film insert molding method uses a two-dimensional pattern. Thus, it is difficult to reproduce a three-dimensional design with a two-dimensional film; no study has been conducted on the reproduction of three-dimensional design using film insert molding method to-date. The objective of this study is to develop a design generation method to reproduce a three-dimensional design with a two-dimensional film pattern. The effectiveness of the proposed method is experimentally validated.

scholarly journals Study on the Influence of Process Parameters on Interface Strength of Film-insert Molding

2018 ◽  
Vol 436 ◽  
pp. 012023
Author(s):  
Zhangyong Hu ◽  
Annan Zhang ◽  
Zhiyong Wang ◽  
Yang Li
Keyword(s):  
Process Parameters ◽  
Interface Strength ◽  
Influence Of Process Parameters ◽  
Film Insert Molding ◽  
Insert Molding

Film insert molding as a novel weld-line inhibition and strengthening technique

2008 ◽  
Vol 48 (11) ◽  
pp. 2147-2158 ◽  
Author(s):  
Yew Wei Leong ◽  
Toshikazu Umemura ◽  
Hiroyuki Hamada
Keyword(s):  
Weld Line ◽  
Film Insert Molding ◽  
Strengthening Technique ◽  
Insert Molding

Method to evaluate residual stresses in the laser cutting process

2002 ◽  
Vol 12 (1) ◽  
pp. 27-41 ◽  
Author(s):  
Y. Zamachtchikov ◽  
F. Breaban ◽  
P. Vantomme ◽  
A. Deffontaine
Keyword(s):  
Residual Stresses ◽  
Laser Cutting ◽  
Cutting Process

Prediction of residual stresses and springback after bending of a textured aluminium plate

2003 ◽  
Vol 105 ◽  
pp. 175-182 ◽  
Author(s):  
L. Delannay ◽  
R. E. Logé ◽  
Y. Chastel ◽  
P. Van Houtte
Keyword(s):  
Residual Stresses

Theoretical study of the prestressing strand's stress by computer modeling methods

2020 ◽  
Vol 76 (11) ◽  
pp. 1139-1148
Author(s):  
A. G. Korchunov ◽  
E. M. Medvedeva ◽  
E. M. Golubchik
Keyword(s):  
Residual Stresses ◽  
High Strength ◽  
Pearlitic Steel ◽  
Internal Stresses ◽  
Steel Microstructure ◽  
Compressive Stresses ◽  
Wide Range ◽  
Prestressing Strands ◽  
Increasing Temperature ◽  
Wire Strand

The modern construction industry widely uses reinforced concrete structures, where high-strength prestressing strands are used. Key parameters determining strength and relaxation resistance are a steel microstructure and internal stresses. The aim of the work was a computer research of a stage-by-stage formation of internal stresses during production of prestressing strands of structure 1х7(1+6), 12.5 mm diameter, 1770 MPa strength grade, made of pearlitic steel, as well as study of various modes of mechanical and thermal treatment (MTT) influence on their distribution. To study the effect of every strand manufacturing operation on internal stresses of its wires, the authors developed three models: stranding and reducing a 7-wire strand; straightening of a laid strand, stranding and MTT of a 7-wire strand. It was shown that absolute values of residual stresses and their distribution in a wire used for strands of a specified structure significantly influence performance properties of strands. The use of MTT makes it possible to control in a wide range a redistribution of residual stresses in steel resulting from drawing and strand laying processes. It was established that during drawing of up to 80% degree, compressive stresses of 1100-1200 MPa degree are generated in the central layers of wire. The residual stresses on the wire surface accounted for 450-500 MPa and were tension in nature. The tension within a range of 70 kN to 82 kN combined with a temperature range of 360-380°С contributes to a two-fold decrease in residual stresses both in the central and surface layers of wire. When increasing temperature up to 400°С and maintaining the tension, it is possible to achieve maximum balance of residual stresses. Stranding stresses, whose high values entail failure of lay length and geometry of the studied strand may be fully eliminated only at tension of 82 kN and temperature of 400°С. Otherwise, stranding stresses result in opening of strands.

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