Investigating The Warpage Deformation For 3d Printed Part Of Kenaf/PP Composite Materials

Simon, Steward (2026) Investigating The Warpage Deformation For 3d Printed Part Of Kenaf/PP Composite Materials. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Additive Manufacturing atau 3D Printing telah menjadi terobosan bagi berbagai industri dengan memungkinkan pembuatan produk yang kompleks. Bahan komposit telah muncul sebagai respons efektif terhadap tuntutan industri modern dengan menggabungkan sifat mekanik bahan penyusun yang berbeda – beda untuk mencapai hasil kekuatan yang diinginkan. Natural Fiber Composites (NFCs) adalah komposit menggabungkan serat alami dalam matriks polimer. NFCs yang sering digunakan adalah campuran komposit kenaf/polipropilen (PP). Serat kenaf menawarkan sifat-sifat unggul seperti kekuatan mekanik tinggi, biodegradabilitas, dan ketersediaan yang luas. Ketika digabungkan dengan polipropilen yang dikenal karena daur ulangnya dan perilaku mekanik yang ditingkatkan, campuran ini menghasilkan komposit yang cocok untuk berbagai aplikasi teknik. Warpage Adalah deformasi sudut atau tepi bagian yang dicetak dengan FDM yang disebabkan oleh proses pendinginan, tegangan sisa, dan faktor lain. Spesimen dibuat sesuai dengan ASTM D256 dan akan diukur menggunakan dial indikator. Data akan diproses menggunakan model Artificial Neural Network (ANN) dan Genetic Algorithm (GA) untuk menentukan hubungan antara parameter masukan komposisi serat, kecepatan cetak, kepadatan pengisian, dan ketebalan lapisan. Kombinasi model ANN dan GA mengidentifikasi parameter terbaik lokal yang menghasilkan nilai Warpage yang diprediksi sebesar 1,23 mm.
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Additive manufacturing or 3D printing has been a breakthrough for numerous industries by enabling the creation of complex parts and products. Composite materials have emerged as an effective response to modern industrial requirements by integrating the mechanical characteristics of different constituent materials to obtain targeted performance outcomes. Natural fiber composites (NFCs), which incorporate natural fibers within a polymer matrix, represent one category. Among the commonly utilized NFCs is the kenaf/polypropylene (PP) composite system. Kenaf fibers offer advantageous properties such as high mechanical strength, biodegradability, and broad availability. When combined with polypropylene recognized for its recyclability and improved mechanical behavior the resulting composite exhibits enhanced performance suitable for various engineering applications. Warpage describes as distortion of corners or edges of FDM printed parts which can be caused during cooling, residual stress and other factors. The specimens are fabricated conform to ASTM D256 and will be measured with dial indicator. The data will be processed with the model of Artificial Neural Network (ANN) and Genetic Algorithm (GA) to determine the relationship between the input parameters of fiber composition, printing speed, infill density, and layer thickness. The combination of the ANN and GA model identifies the local best parameter which yield the predicted warpage value of 1.23 mm.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Warpage, Polypropylene, Kenaf
Subjects:	T Technology > TS Manufactures > TS156 Quality Control. QFD. Taguchi methods (Quality control) T Technology > TS Manufactures > TS161 Materials management.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Steward Simon
Date Deposited:	02 Feb 2026 03:09
Last Modified:	02 Feb 2026 03:09
URI:	http://repository.its.ac.id/id/eprint/131503

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