Advanced SearchSearch Tips
The Fiber Damage and Mechanical Properties of Short-fiber Reinforced Composite Depending on Nozzle Size Variations in Injection/Mold Sides
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
The Fiber Damage and Mechanical Properties of Short-fiber Reinforced Composite Depending on Nozzle Size Variations in Injection/Mold Sides
Lee, In-Seop; Lee, Dong-Ju;
  PDF(new window)
The mechanical properties of short carbon/glass fiber reinforced polypropylene are experimentally measured as functions of fiber content and nozzle diameter. Also, these properties are compared with the survival rate of reinforced fibers and fiber volume fraction using image analysis after pyrolytic decomposition. The survival rate of fiber aspect ratio as well as fiber volume fraction is influenced by injection processing condition, the used materials and mold conditions such as diameter of nozzle, etc. In this study, the survival rate of fiber aspect ratio is investigated by nozzle size variations in injection/mold sides. It is found that the survival rate of glass fiber is higher that the survival rate of glass fiber is higher than that of carbon fiber. Both tensile modulus and strength of short-fiber reinforced polypropylene are improved s the fiber volume fraction and nozzle diameter are increased.
Injection Molding;Fiber Damage;Fiber Volume Fraction;Aspect Ratio;Pyrolytic Decompositon;Survival Rate;Nozzle Size;Short Fiber;
 Cited by
Kelly, A. and Tyson, W. R., 1965, 'Tensile Properties of Fiber-Reinforced Metals : Copper/Tungsten and Copper/Molybdenum,' J. Mech. Phys. Solids, Vol. 13, pp. 329-350 crossref(new window)

Hancock, P. and Cuthbertson, R. C., 1970, 'The Effect of Fibre Length and Interfacial Bond in Glass Fibre-Epoxy Resin Composites,' J.Mater Sci. 5, pp. 762-768 crossref(new window)

Bowyer, W. H. and Bader, M. G., 1972, 'On the Reinforcement of Thermoplastics by Imperfectly Aligned Discontinuous Fibres,' J. Mater. Sci, 7, pp. 1315-1321 crossref(new window)

Ohsawa, T. Nakayama, A. Miwa, M. and Hasegawa, A., 1978, 'Temperature Dependence of Critical Fiber Length for Glass Fiber-Reinforced Thermosetting Resin,' J. Appl. Polym. Sci, Vol. 22, pp. 3203-3212 crossref(new window)

Miwa, M. Ohsawa, T. and Tahara, K., 1980, 'Effect of Fiber Length on the Tensile Strength of Epoxy/Glass Fiber and Polyester/Glass Fiber Composites,' J. Appl. Polym. Sci, Vol. 25, pp. 795-807 crossref(new window)

Turkovich, R. V. and Erwin, L., 1983, 'Fiber Fracture in Reinforced Thermoplastic Processing,' Polym. Eng. Sci, Vol. 23, No. 13, pp. 743-749 crossref(new window)

Silverman, E. M., 1987, 'Effect of Glass Fiber Length on the Creep and Impact Resistance of Reinforced Thermoplastics,' Polym. Composites, Vol. 8, No. 1, pp. 8-15 crossref(new window)

Fischer, G. and Eyerer, P., 1988, 'Measuring Spatial Orientation of Short Fiber Reinforced Thermoplastics by Image Analysis,' Polym. Composites, Vol. 9, No. 4, pp. 297-304 crossref(new window)

Spahr, D. E. Friedrich, K. Schultz, J. M. and Bailey, R. S., 1990, 'Microstructure and Fracture Behaviour of Short and Long Fiber-Reinforced Polypropylene Composites,' J. Mater. Sci, 25, pp. 4427-4439 crossref(new window)

Landis, C. M. Mcglockton, M. A. and Mcmeeking, R. M., 1999, 'An Improved Shear Lag Model for Broken Fibers in Composite Materials,' J. Composite Material, Vol. 33, No. 7, pp. 667-680 crossref(new window)

Fu, S. Y. Lauke, B. Mader, E. Hu, X. and Yue, C. Y., 1999, 'Fracture Resistance of Short-Glass Fiber-Reinforced and Short-Carbon Fiber-Reinforced Polypropylene under Charpy Impact Load and its Dependence on Processing,' J. Materials. Processing Technology, 89-90, pp. 501-507 crossref(new window)

Inberg, J. P. F. Hunse, P. H. and Gaymans, R. J., 1999, 'Long Fiber Reinforcedment of Polypropylene/Polystyrene Blends,' Polym. Eng. Sci, Vol. 39, No. 2, pp. 340-346 crossref(new window)

Nabi, Z. U. and Hashemi, S., 1998, 'Influence of Short Glass Fibers and Weldlines on the Mechanical Properties of Injection-Moulded Acrylonitrile-Styrene acrylate copolymer,' J. Mater. Sci, 33, pp. 2985-3000 crossref(new window)

Dong-Joo Lee., 1996, 'On Studies of Tensile Properties in Injection Molded Short Carbon Fiber Reinforced PEEK Composite,' KSME Journal, Vol. 10, No. 3, pp. 362-371

Gibson, R. F., 1994, 'Principles of Composite Material Mechanics,' McGraw-Hill, pp. 156-189

Hui, C. Y. and Shia, D., 1998, 'Simple Formulae for the Effective Moduli of Unidirectional Aligned Composites,' Polym. Eng. Sci, Vol. 38, No. 5, pp. 774-782 crossref(new window)

Annual Handbook of ASTM Standard, 1995, 'Standard Test Method for Tensile Properties of Plastics,' ASTM D638M-93, pp. 59-67

Truckenmuller, F. and Fritz, H. G., 1991, 'Injection Molding of Long Fiber-Reinforced Thermoplastics : A Comparision of Extruded and Pultruded Materials with Direct Addition of Roving Strands,' Polym. Eng. Sci, Vol. 31, No. 18, pp. 1316-1329 crossref(new window)