Published Innovation

0
Journal Papers
0
Patents
0
Conference Papers
0
Journal Papers
0
Patents
0
Conference Papers
0
Cited Articles

Table of Contents

Conference Papers

Conference Papers

2019

2019

Three dimensional numerical simulations for wet-RTM process
Hsun Yang, Chih-Chung Hsu, and Chia-Hsiang Hsu
PPS
Wet-RTM (Resin Transfer Molding) molding applies the resin onto the surface of the reinforcements and then the resin flows into the fabric with mold compression. This process is gaining attention thanks to car marker’s use in recent years. Since both the fabric layup and...
3D simulation of suspension balance model on fiber concentration for injection molding process
Shi-Dong Lee, Rong-Yeu Chang, Chia-Hsiang Hsu, and Huan-Chang Tseng
JSPP
The Suspension Balance (SB) model describes the phenomenon of particle migration under the simple shear flow of particle suspension. In the recent work, the SB model has proven successful in predicting fiber concentration with the“like-rod”suspensions. The SB model...
High temperature dilatometry design and application considering thermal history
Chen-Chieh Wang, Maw-Ling Wang and R-Y Chang
JSPP
A new dilatometry which up to 450 is designed and tested in this work. CAE software Moldex3D is used to aid the design of mold and the improvement of the control of temperature distribution. The thermal history and pressure effect on specific volume are studied for both...
Optimizing process condition of pu chemical foaming: validation of material properties for numerical simulation
C-W. Wang, L-Y. Chang, S-P. Sun, C-C. Hsu, C-H. Hsu, and R-Y Chang
ANTEC
Herein, we present the recent development in PU chemical foaming simulation by simultaneously considering the two competing major reactions governing PU chemical foaming, namely, the foaming reaction between isocyanate and water, and curing reaction...
Computer-aided engineering approach to composite manufacturing solutions of resin transfer molding process
Hsi-Hung Chang, Hsun Yang, Chih-Chung Hsu
ANTEC
Herein, we present the recent development in PU chemical foaming simulation by simultaneously considering the two competing major reactions governing PU chemical foaming, namely, the foaming reaction between isocyanate and water, and curing reaction...
A new flow-orientation coupling analysis in injection molding simulation of fiber composites
Huan-Chang Tseng, and Anthony J. Favaloro
ANTEC
Fiber reinforced plastic composites provide improved part performance in a wide variety of applications. One of the most promising manufacturing processes nowadays is resin transfer molding (RTM). Latest advancements in simulation technology make the advanced...
Wei Keat Loh, Kang Eu Ong, Chih Chung Hsu, Jenn An Wang, Ron W. Kulterman, Haley Fu
ICEPT
An accurate predictive analysis of fiber orientation is crucial for practical injection molded fiber composite applications. Recently, an objective model, iARD-RPR (Improved Anisotropic Rotary Diffusion and Retarding Principal Rate), has been significant to provide anisotropic distribution...
2018

2018

Simulating pu chemical foaming: from material properties to numerical simulation
C-W. Wang, S-P Sun, Hsien-Sen Chiu, C-H Hsu, and R-Y Chang
PPS
We present in this study the latest advancements in PU foaming simulation technology by simultaneously considering the two competing major reactions governing PU chemical foaming, namely, the foaming reaction between isocyanate and water, and curing reaction...
Numerical simulation for predicting sink marks on injection molding and injection compression molding process
Yen-Chih Chen, Chih-Chung Hsu, and Chia-Hsiang Hsu
PPS
Sink marks are small depressions on the surface of molded parts due to the localized uneven shrinkage and varying thicknesses. Although the sink mark depth is so shallow that it has no influence on the strength of the product, sink marks would be visible through the reflection of...
Application of non-matching mesh in injection molding simulation
Yao-Chen Tsai, Chung-Yi Huang, Chien-Hung Lin, Jing Wei, Yan-Chen Chiu, Hung-Chou Wang
PPS
For numerical analysis methods, such as finite element method or finite volume method, the domain needs to be discretized by meshing it. In general, In order to analyze the continuous field in the domain, the elements of different components need to be connected by shared...
Warpage study on viscoelasticity effect
Ru-Jing Jhang, Tung-Huan Su, Hsien-Sen Chiu, Rong-Yeu Chang
PPS
Warpage issue of injection molding product is widely concerned by designer and molder because it is critical to product quality. How to control warpage within tolerance is the ultimate goal for injection molding industry. Accurate computer aided engineering (CAE) warpage...
3D numerical simulation for polyurethane foam molding process
Li-Yang Chang, Yuan-Jung Chang, and Chia-Hsiang Hsu
PPS
Three-dimensional simulation for polyurethane (PU) foam produced in a mold is developed in this study. Reaction kinetics model, density model, and viscosity model are applied to describe the complex polyurethane foam system in the simulation study. The effect of mold rotation...
Coupled flow and fiber orientation analysis for 3D injection molding simulations of fiber composites
Huan-Chang Tseng and Tung-Huan Su
PPS
In the past, many injection molding simulations based on the Hele-Shaw approximation to predict fiber orientation have been developed. Some researchers have also performed the coupling analysis of flow field and fiber orientation by the Lipscomb constitutive equation of...
A CAE approach to advanced composite manufacturing solutions with resin transfer molding process
Hsi-Hung Chang, Hsun Yang , Chih-Chung Hsu
模具公會
Fiber reinforced plastic (FRP) composites provide improved part performance in a wide variety of applications. One of the most promising manufacturing processes available today is the Resin Transfer Molding (RTM). Latest advancements in simulation technology allow for such...
Later theoretical model makes simulation analysis on the orientation of fiber reinforced plastics
Huan-Chang Tseng, Rong-Yeu Chang, Chia-Hsiang Hsu
模具公會
According to a recent report published by the U.S. Department of Energy (DOE), since it is difficult to observe the micromechanical structures of complicated composites geometries through experiments, it is important to develop predictive engineering tools for injection...
Accurate predictions of fiber orientation in high fiber concentrations for injection-molded fiber composites
Huan-Chang Tseng, Hsien-Sen Chiu, Rong-Yeu Chang, and Chia-Hsiang Hsu
JSPP
Accurate fiber orientation prediction is crucial for practical structural analysis of injection-molded fiber composite applications. Recently, an objective fiber orientation model, iARD-RPR (Improved Anisotropic Rotary Diffusion and Retarding Principal Rate), has been significant to...
Optimizing process condition of pu chemical foaming: determining material properties for numerical simulation
C-W. Wang, S-P Sun, Hsien-Sen Chiu, C-H Hsu, and R-Y Chang
JSPP
Herein, we present the recent development in PU chemical foaming simulation by simultaneously considering the two competing major reactions governing PU chemical foaming, namely, the foaming reaction between isocyanate and water, and curing reaction...
Optimizing process condition of pu chemical foaming: determining material properties for numerical simulation
C-W. Wang, S-P. Sun, C-H. Hsu, and R-Y Chang
ANTEC
Herein, we present the recent development in PU chemical foaming simulation by simultaneously considering the two competing major reactions governing PU chemical foaming, namely, the foaming reaction between isocyanate and water, and curing reaction...
Viscoelasticity study on warpage validation
Ru-Jing Jhang, Tung-Huan Su, Hsien-Sen Chiu, Rong-Yeu Chang
ANTEC
Herein, we present the recent development in PU chemical foaming simulation by simultaneously considering the two competing major reactions governing PU chemical foaming, namely, the foaming reaction between isocyanate and water, and curing reaction...
Dynamic water penetration prediction for push-back process in water-assisted injection molding
Chih-Chung Hsu, Gorka Jaio Beloki, Stephen Chung, Henry Hung and William Wu
ANTEC
Warpage is an important indicator when evaluating the quality of an injection molding product. How to control the warpage within tolerance is a critical issue concerned by designer and molder. An accurate Computer-Aided Engineering (CAE) warpage prediction helps designer to...
Investigation on the viscosity characterization of the glass mat thermoplastics (GMT) in compression molding system
Tse-Yu Chien, Chao-Tsai (CT) Huang, Gwo-Geng Lin, Shih-Po Sun, Chih-Wei Wang, David Hsu, Rong-Yeu Chang
ANTEC
Water-assisted injection molding (WAIM) process has brought a breakthrough development for the traditional injection molding industry. The water cores out a network of hollow channels throughout the mold cavity to reduce the cost of energy and plastic evidently. In the recent...
Experimental verification on moldex3D fiber orientation prediction in high fiber concentrations
Huan-Chang Tseng, Rong-Yeu Chang, and Chia-Hsiang Hsu
ANTEC
In compression molding development using the glass fiber mat thermoplastics (GMT) material, CAE is not mature enough yet due to the rheological properties of the GMT material are not measured properly. In this study, we have proposed a method to measure the rheological...
2017

2017

Experimental verification on moldex3D fiber orientation prediction in injection-molded tensile bar and ribbed plates
Huan-Chang Tseng, Lucien Douven
PPS
The prediction of fiber orientation has become a standard calculation in injection-molding simulation of fiber-reinforced thermoplastic parts. Recently, commercially available injection molding software, Moldex3D, developed a new fiber orientation model, iARD-RPR. For simple...
Predict and solve stress mark on injection molding product’s surface using controlled sequential valve gating simulation
Edward Suhartono, Hsien-Sen Chiu, Chih-Chung Hsu, Chen-Chieh Wang, Chih-Wei Wang, Nicola Pavan
模具公會
Surface defect like stress mark has been a major issue in automotive part produced by Sequential Valve Gating (SVG). This defect may still even show up as uneven gloss after painting and drying, which is critical for cosmetic surface appearance. To solve it, controlled...
Ink-wash and warpage defect prediction from the in-mold decoration process simulation
Shih-Po Sun, Tung-Huan Su, Chia-Hsiang Hsu
模具公會
We introduced in this paper a simulation tool designed to predict the most common defects related to the in-mold decoration process. Ink-wash is the most obvious aesthetic problem caused by high temperature or high shear from the incoming melt. Warpage is another...
Kuo-Cheng Li, Yao-Chen Tsai, Chih-Chung Hsu, Chao-Tsai Huang
IMPACT
The development of SiP (System in Packaging) product is complicated due to the complexity of different components structures and resin material properties while processing. This process contains the interconnection between diverse electronic components and curing phenomenon...
Numerical simulation and material characterization of polyurethane foaming process
Li-Yang Chang, Yuan-Jung Chang, Chia-Hsiang Hsu
JSPP
We present the recent development of three-dimensional water blown polyurethane foam injection molding. Front tracking experiment is employed to investigate the foaming kinetics of polyurethane. Reaction kinetics model, density model and viscosity model are applied to...
Numerical integration method for smc in compression molding process
Yi-Cheng Chen, Ming-Ju Chang, Chi-Wei Chan
JSPP
In this work, SMC, formed using compression molding process, was investigated by numerical simulation. As part of this work, LS-DYNA, a commercially available FEA software, and Moldex3D were applied to investigate the CSM and CFD behavior respectively in compression...
Long fiber orientation and structural analysis using moldex3D, digimat and abaqus simulations
Huan-Chang Tseng, Chia-Hsiang Hsu, Rong-Yeu Chang
ANTEC
Long fiber-reinforced thermoplastic composites open up exciting new possibilities for the green automotive industry, owing to excellent mechanical properties, advantageous weight reduction, and economical fuel consumption. However, fiber microstructure including fiber orientation...
Predict and solve stress mark on product cosmetic surface using controlled sequential valve gating simulation
Edward Suhartono, Hsien-Sen Chiu, Chih-Chung Hsu, Chen-Chieh Wang, Chih-Wei Wang, Nicola Pavan
ANTEC
Long fiber-reinforced thermoplastic composites open up exciting new possibilities for the green automotive industry, owing to excellent mechanical properties, advantageous weight reduction, and economical fuel consumption. However, fiber microstructure including fiber orientation...
Optimizing process condition of resin transfer molding (RTM): determing material properties for numerical simulation
C-W. Wang, C-T. Heng, L-J. Bin, S-P. Sun, C-H. Hsu, Y. Yao, and R-Y Chang
ANTEC
Surface defect like stress mark has been a major issue in automotive part produced by Sequential Valve Gating (SVG). This defect may still even show up as uneven gloss after painting and drying, which is critical for cosmetic surface appearance. To solve it, controlled...
Ink-wash and warpage defect prediction from the in-mold decoration process simulation
Shih-Po Sun, Tung-Huan Su, David Hsu
ANTEC
Herein, we present the recent development in permeability measurement by an optical visualization method. We applied this technique to investigate materials commonly used in wind turbine industry, such as different types of fiber mats, distribution medium, PVC core...
Numerical simulation of polyurethane chemical foaming process
Li-Yang Chang, Yuan-Jung Chang, Chia-Hsiang Hsu
PPS
Polyurethane (PU) foam simulation has become a common application for chemical foaming molding industry in recent years. In this study, we apply the three-dimensional model to simulate the water blown polyurethane foam injection molding. The foaming result will be...
2016

2016

Investigation of fiber breakage phenomena for different fiber types in injection molding
Chao-Tsai (CT) Huang, Huan-Chang Tseng, Rong-Yeu Chang, Sheng-Jye Hwang
模具公會
The lightweight technologies become the driving force for people in automotives and other developments in recent years. Among those technologies, using short and long fiber-reinforced thermoplastics (FRT) to replace some metal components can reduce the weight of an...
Chia-Peng Sun , Chih-Chung Hsu , Chao-Tsai Huang, Rong-Yeu Chang
IMPACT
In this study, a general-purpose, 3D simulationy technique is proposed to track the propagation of the underfill in microchips. The capillary underfill flow, which is mainly driven by the surfacetension force based on the contact angle between bumps and substrate, of dispensing..
How to optimize compression molding process parameters with simulation tools: from material properties to CAE simulation
Adam Miller
TPO
How to improve product quality with the latest process simulation technology
Anthony Wen-Hsien Yang, Lye Wang,
TPO
Optimizing process condition of compression molding: from material properties characterization to numerical simulation
C-W. Wang, W-C. Tsai, S-B. Sun, C-H. Hsu, R-Y. Chang
ANTEC
Herein, we present the recent development in viscosity measurement by squeeze flow method. We applied this technique to investigate to fiber reinforced plastic (FRP) systems including, polypropylene-based glass mat thermoplastic (PP-GMT), and thermosetting sheet molding...
Investigation of fiber breakage phenomena for different fiber types in injection molding
Chao-Tsai (CT) Huang, Shi-Chang Tseng, Rong-Yeu Chang, and Sheng-Jye Hwang
ANTEC
Herein, we present the recent development in viscosity measurement by squeeze flow method. We applied this technique to investigate to fiber reinforced plastic (FRP) systems including, polypropylene-based glass mat thermoplastic (PP-GMT), and thermosetting sheet molding...
Cavity effect on core penetration in co-injection multi-cavity molding
Chao-Tsai (CT) Huang, Chih-Chung Hsu, Rong-Yeu Chang, and Shi-Chang Tseng
ANTEC
The lightweight technologies become the driving force for people in automotives and other developments in recent years. Among those technologies, using short and long fiber-reinforced thermoplastics (FRT) to replace some metal components can reduce the weight of an...
Optimizing process condition of compression molding: from material properties characterization to numerical simulation
Chi-Wei Wang, Wan-Cheng Tsai, Shih-Po Sun, Chia-Hsiang Hsu, Rong-Yeu Chang
模具公會
Herein, we present the recent development in viscosity measurement by squeeze flow method. We applied this technique to investigate to fiber reinforced plastic (FRP) systems including, polypropylene-based glass mat thermoplastic (PP-GMT), and thermosetting sheet molding...
2015

2015

Chih-Chung Hsu, Huan-Chang Tseng, Tzu-Cheng Wang, Chao-Tsai Huang, Rong-Yeu Chang
IMPACT
Due to the tighter and tighter requirement for modern electronic product, the smaller dimensional specification is expected to fit under the evolution of continuous process. On the other hand, under the pressure of time-to-market, how to provide qualified modern electronic...
3D volume shrinkage compensation method xin mold design optimization
Chen-Han Tseng, Chao-Tsai (CT) Huang, Yu-Chih Liu, Wen-Li Yang, and Rong-Yeu Chang
模具公會
Injection molding is used widely in plastic production at present. However, how to optimize the manufacturing process will be the key factor in the success of the product. To make the product development process more successfully, and less cost, CAE is essential to integrate...
Screw design and operation effects on fiber breakage
Chao-Tsai (CT) Huang, Huan-Chang Tseng, Cheng-Han Tsai, Hsien-Sen Chiu, and Jiri Vlcek
JSPP
In recent years, the lightweight technologies have become the driving force for people in automotives and others development. Among those technologies, using short and long fiber-reinforced thermoplastics (FRT) to replace some metal components can reduce the weight of...
Prediction of black line for metal injection molding
Shun-Tian Lin, Chao-Zong Ruan, Huan-Chang Tseng, Chao-Tsai(CT) Huang, Hsien-Sen Chiu, Cheng-Han Tsai, Chia-Hsiang Hsu
JSPP
Metal Injection Molding (MIM) that is a novel advanced manufacturing technology with a complex feedstock consisting of powder and binder can rapidly produces various high precision metal components. However, the MIM feedstock, including metal power and polymer binder...
Accurate prediction of fiber orientation in injection molding of fiber-reinforced plastics composite
Huan-Chang Tseng, Chia-Hsiang Hsu, Chao-Tsai(CT) Huang, Hsien-Sen Chiu, Cheng-Han Tsai, Rong-Yeu Chang
JSPP
The widespread use of fiber-reinforced thermoplastic (FRT) composites in automotive industrial fabrication is more requirement than metal. Mechanical properties of FRT products contain strength, stiffness, and impact, which are dominated upon fiber orientation within the part...
Long fiber orientation and length attrition for filling simulation of injection molded fiber-reinforced thermoplastics
Huan-Chang Tseng, Yuan-Jung Chang, Chia-Hsiang Hsu, Rong-Yeu Chang
Plastics-in-Motion
Numerical investigation and experimental validation for wax pattern formation through injection in investment casting
Wen-Yen Chang, Chao-Tsai Huang, Chih-Kang Lee, and Rong-Yeu Chang
ANTEC
Lost wax process is widely used in metal casting to manufacture high precision metal products. However, since it covers a lot of procedures, high precision quality is very difficult to obtain via conventional trial-and-error method. In this study, we have proposed numerical method to...
In-depth study for the different physical mechanism between over-molding and co-injection molding
Che-Ping Lin, Shih-Po Sun, Chao-Tsai (CT) Huang, and Shi-Chang Tseng
ANTEC
Lost wax process is widely used in metal casting to manufacture high precision metal products. However, since it covers a lot of procedures, high precision quality is very difficult to obtain via conventional trial-and-error method. In this study, we have proposed numerical method to...
Post shrinkage effect on thick optical lens development
Heng-Tseng Liao, Chao-Tsai Huang and Ying-Mei Tsai,,Rong-Yeu Chang, Ming-Yan Yu, Wei-Sian Wang , Yi-Jen Yang, and Chung-Ching Huang
ANTEC
Multi-component molding (MCM) has been developed and applied in our life for many decades. However, due to the complicated combination from materials to processes, it is very difficult to control and management for this type of product development. In this study, we have extended..
Dynamic behavior of core-material penetration in multi-cavity co-injection molding
Hsiu-Hui (Jackie) Yang, and Chao-Tsai (CT) Huang
ANTEC
This study investigates the geometric accuracy of thick fisheyes lens under injection molding. The effects on the geometric accuracy resulting from processing parameters in conventional injection molding (melt temperature, packing pressure, and filling time) and in injection...
3D volume shrinkage compensation method in injection mold design optimization
Chen-Han Tseng, Chao-Tsai (CT) Huang, Yu-Chih Liu, Wen-Li Yang, and Rong-Yeu Chang
ANTEC
Co-Injection Molding and multi-cavity molding are very common processes for plastic manufacturing. Sometimes, co-injection and multi-cavity molding combined system is applied in some forks structure products. Since the core penetration and flow balance control...
Through 3D simulation to study resin transfer molding (RTM) process with sandwich structure and gravity effects
Tsu-Min Ho , Hsun Yang,Chih-Chung Hsu, Yu-Sung Chang, Yuan Yao, and Rong-Yeu Chang
ANTEC
Injection molding is used widely in plastic production at present. However, how to optimize the manufacturing process will be the key to the product quality. To make the product development more successful and economical, CAE is essential to integrate instead of trial and error...
Numerical simulation and experimental verification in cell nucleation and growth with core-back foam injection molding
Li-Yang Chang, Yuan-Jung Chang, Chia-Hsiang Hsu, Masahiro Ohshima
ANTEC
This study presents an integrated and novel analytical system to predict the resin transfer molding (RTM) process. Recently, the multilayer fiber mats perform, called sandwich structure [1], is used widely on the boat and aircraft parts to strengthen the construction. This study...
Numerical simulation for screw geometry design and performance effects on fiber breakage study
Chao-Tsai (CT) Huang, Huan-Chang Tseng, Meng-Chih Chen, and Jiri Vlcek
ANTEC
This study presents the recent development of three-dimensional prediction of microcellular foam injection molding with core-back operation by supercritical fluids (SCFs) nitrogen. In addition to the filling behavior in whole core-back process, effects of nitrogen gas...
Application of CAE simulation technology for the filling behavior of resin in vaRTM process of sandwich structure and wind turbine blades manufacturing
Hua-Zhan Chou, Hsun Yang, Chih-Chung Hsu, Yu-Sung Chan, Yuan Yao, Rong-Yeu Chang
模具公會
Sandwich structure has been widely used in the aircraft and automotive parts, because its high strength and stiffness material property. After mixing epoxy resin and hardener, it begins a chemical reaction. The viscosity and the conversion rate increase with time in the resin filling...

Test drive Moldex3D

Join the thousands of companies using Moldex3D

Talk to Sales

Schedule a product demo with our sales team