Optimization for the prepreg compression molding of notebook computer cover using design of experiment and finite element method

Abstract

Composite materials can be successfully applied to the manufacturing process in the consumer electronics field and can drastically reduce the weight of the several parts. For this reason, it is important to predict the shape change after carrying out compression molding of composite material and to determine the key parameters of the manufacturing process. In this paper, the compression molding process of a notebook computer cover using composite materials was analyzed by the finite element method. In addition, the signal-to-noise ratio has been calculated for the warpage deformations that occurred on the surface of the notebook computer cover. The design of experiment method was applied to determine the optimal parameters in the process. Levels of the optimal process factors were selected for minimum warpage deformation and to verify the proposed method; a physical notebook computer cover was manufactured using these optimal conditions. Experimental results, including those on warpage deformations, show that the proposed method can be useful in the manufacturing of lightweight notebook computer covers using a compression molding machine.

Analysis of the main factors affecting mass production in the plastic molding process by using the finite element method

“…In [12], the warpage deformation results from simulation show that the analysis method is so useful in injection molding and can cover and diagnose the main manufacturing shortage before investment in tooling. The data obtained in [13] show that the product is exposed to different mechanical and thermal conditions during the removal and ejection from the cavity.…”

Study on Bearing Strength and Failure Modes of Single Bolted Joint Carbon/Epoxy Composite Materials

“…Composite materials are widely sought after in a variety of industries due to their superior mechanical qualities, which include a high strength-to-weight ratio and a low stiffness-to-weight ratio, allowing for the creation of lightweight solutions [1][2][3][4][5][6][7]. They have several uses in transportation, including the aerospace, automotive, and marine sectors, where they make up more than half of all aircraft structural components [8][9][10][11][12][13][14]. Furthermore, they are used in the automobile and sports industries [15][16][17][18][19][20].…”

Optimization of Compression Molding Process Parameters for NFPC Manufacturing Using Taguchi Design of Experiment and Moldflow Analysis

“…The polymer material in the composites is usually virgin, however, recycled polymer material is also receiving increasing interest from researchers and manufacturers [6,7]. NFPCs are fabricated using various manufacturing techniques, including injection molding, compression molding, extrusion, and resin transfer molding [2,8,9]. Compression molding is widely used for the fabrication of NFPCs due to its high-volume productivity, simplicity, and low-cost operation [2,10].…”

“…This is usually good for the processing of polymer material alone because with NFPCs there is always a possibility of fibers becoming stuck at the gate or runner due to their small size [9]. Meanwhile, compression molding requires the composite charge to be placed in between male and female tools, and the material is formed by the application of pressure and heat [8,10,11].…”