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TECHNICAL PAPERS

Localized Material and Processing Aspects Related to Enhanced Recycled Material Utilization Through Vibration-Assisted Injection Molding

[+] Author and Article Information
Akihisa Kikuchi, John P. Coulter, David Angstadt

Manufacturing Science Laboratory, Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA, 18015-3085

Ahmet Pinarbasi

Department of Mechanical Engineering, Cukurova University, 01330 Adana, Turkey

J. Manuf. Sci. Eng 127(2), 402-410 (Apr 25, 2005) (9 pages) doi:10.1115/1.1870012 History: Received July 09, 2003; Revised May 05, 2004; Online April 25, 2005
Copyright © 2005 by ASME
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References

Figures

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Tensile strength distributions of conventionally molded products made from blends of new and recycled material
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Cavity pressure profile of control sample: (a) P1 and P2 of 100/0, (b) P1 and P2 of 75/25, (c) P1 and P2 of 50/50, and (d) pressure difference between P1 and P2 of 100/0, 75/25 and 50/50
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Sample cavity pressure profile of VAIM (2 Hz): (a) pressure at P1, (b) pressure at P2, and (c) pressure difference between P1 and P2
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Effect of vibration delay time on product strength for 50/50 virgin/recycled blend
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Effect of vibration duration time on product strength for 50/50 virgin/recycled blend
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Effect of vibration frequency on product strength for various blends and frequencies
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Effect of vibration frequency on pressure profile: (a) 100/0, (b) 75/25, and (c) 50/50
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Effect of vibration duty cycle on product strength for 50/50 virgin/recycled blend
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Effect of vibration amplitude on product strength for 50/50 virgin/recycled blend
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Effect of screw oscillation amplitude on cavity pressure profile during filling stage: (a) 2 Hz, and (b) 4 Hz vibration
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Effect of screw oscillation amplitude on cavity pressure profile during packing stage: (a) 2 Hz, and (b) 4 Hz vibration
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Potential for enhanced utilization of recycled materials through VAIM processing
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Representative stress-strain diagrams for virgin and recycled polystyrene blends processed by both conventional and vibrational molding
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Comparison of tensile fracture surfaces
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Comparison of flow and orientation patterns: (a) conventional molding and (b) VAIM

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