Optimization of injection molding parameters: Improving mechanical properties of kenaf reinforced polypropylene composites

M. K.F. Md Radzi, Norhamidi Muhamad, Abu Bakar Sulong, Che Hassan Che Haron, Z. Razak, M. N. Akhtar, N. F. Ismail, D. Tholibon, I. Tharazi

Research output: Contribution to journalArticle

Abstract

Natural fiber composites offer significant benefits as alternative material composites in terms of renewable materials. Therefore, natural fibers are commonly used in automotive industries primarily as interior and exterior parts. The manufacturing process of the automotive parts is essential to minimize the defects such as residual stress with better mechanical properties. Hence, this study focused on the employment of rational design of experiment (DOE) to determine the optimized injection molding parameters by improving the mechanical properties of kenaf fibers reinforced polypropylene composites. Taguchi method with L27 (34) orthogonal array applied to optimize the injection molding process parameters, based on the highest response of the strength properties generated by S/N ratio using the larger the better. Moreover, ANOVA analysis was employed to evaluate the most significant parameter including injection temperature, injection pressure, holding pressure and injection rate which affected the mechanical properties. The confirmation test was conducted to verify the predicted range of optimum mechanical properties. Results indicated that the optimum injection molding parameter obtained with the injection temperature at 190°C, injection pressure at 1300 bar, holding pressure at 1900 bar, and the injection rate at 20 cm 3 /s. Implementing the optimum parameters is able to fabricate better mechanical properties of kenaf/PP composites where most of the confirmation mechanical strength values are evaluated within the predicted range or lie near the acceptable limits.

Original languageEnglish
Pages (from-to)107-120
Number of pages14
JournalJournal of Advanced Manufacturing Technology
Volume12
Issue number2
Publication statusPublished - 1 Jan 2018

Fingerprint

Polypropylene
Injection Molding
Injection molding
Mechanical Properties
Polypropylenes
Injection
Composite
Mechanical properties
Optimization
Composite materials
Natural fibers
Fiber
Kenaf fibers
Taguchi methods
Taguchi Method
Analysis of variance (ANOVA)
Orthogonal Array
Automotive industry
Design of experiments
Design of Experiments

Keywords

  • Design of experiment
  • Injection molding
  • Mechanical properties
  • Natural fiber composites
  • Taguchi method

ASJC Scopus subject areas

  • Software
  • Automotive Engineering
  • Hardware and Architecture
  • Computer Networks and Communications
  • Control and Optimization
  • Industrial and Manufacturing Engineering
  • Management of Technology and Innovation

Cite this

Optimization of injection molding parameters : Improving mechanical properties of kenaf reinforced polypropylene composites. / Md Radzi, M. K.F.; Muhamad, Norhamidi; Sulong, Abu Bakar; Che Haron, Che Hassan; Razak, Z.; Akhtar, M. N.; Ismail, N. F.; Tholibon, D.; Tharazi, I.

In: Journal of Advanced Manufacturing Technology, Vol. 12, No. 2, 01.01.2018, p. 107-120.

Research output: Contribution to journalArticle

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AU - Razak, Z.

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