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All Journal IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Tubagus Adytia Syarief Hidayat
Universitas 17 Agustus 1945 Cirebon
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Parameter Sintering terhadap Stabilitas Fasa dan Struktur Mikro pada Komposit Titanium-Hidroksiapatit dengan Teknologi Serbuk: Review Widyanita Harwijayanti; Tubagus Adytia Syarief Hidayat
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.380

Abstract

The increasing demand for orthopedic implants has driven the development of metals as biomedical materials. However, metals exhibit limited bioactivity, necessitating modifications to enhance their biological integration. One widely developed method is the fabrication of Titanium-Hydroxyapatite (Ti-HA) composites via powder metallurgy, utilizing hydroxyapatite for its similarity to human bone composition. This review analyzes 16 articles from Scopus and Google Scholar (2005-2023) based on material types, powder metallurgy parameters, and the physicochemical characterization of Ti-HA composites. The powder metallurgy process involves mixing, compaction, and sintering, during which the final properties are significantly influenced by the atmosphere, temperature, and holding time. A critical challenge is thermal stability, as hydroxyapatite decomposes above 800°C and titanium undergoes crystalline structural transformation beyond 882.5°C. During sintering, interparticle bonding and diffusion processes occur, triggering new phase formations and alterations in surface morphology. This process results in a final Ti-HA composite composition consisting of Titanium (Ti), Calcium (Ca), Phosphorus (P), and Oxygen (O). This study underscores the importance of precise control of temperature parameters to maintain material integrity during fabrication.
Studi Eksperimental Sifat Mekanik dan Ketahanan Api Hybrid Composite Serat Ijuk (Arenga Pinnata) dengan Variasi Fraksi Volume Tubagus Adytia Syarief Hidayat; W. Djoko Yudisworo; Anton Harseno; Nanda Pardani
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 5 (2026): Oktober: Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i5.1744

Abstract

The development of natural fiber-based composite materials is an alternative approach for producing lightweight and economical materials while supporting the utilization of agricultural waste. This study aims to analyze the effect of sugar palm fiber (Arenga pinnata) volume fraction and alkaline treatment on the mechanical properties and burning resistance of epoxy matrix composites. The sugar palm fibers were treated using 5% NaOH solution for 2 hours and incorporated into the composite at volume fractions of 10%, 20%, 30%, 40%, and 50%. The composites were fabricated using the hand lay-up method. Mechanical characterization included tensile testing according to ASTM D638 and flexural testing according to ASTM D790, while burning resistance was evaluated according to ASTM D635. The results showed that increasing the fiber fraction tended to improve the tensile strength. The highest tensile strength was obtained at a 50% fiber fraction without treatment, reaching 52 MPa. Meanwhile, the highest Modulus of Rupture (MoR) was obtained at a 50% fiber fraction with alkaline treatment, reaching 55.66 MPa. In the burning test, the lowest burning rate was obtained at a 50% fiber fraction, with values of 17.55 mm/min for untreated specimens and 17.78 mm/min for treated specimens. The results indicate that a 50% fiber fraction provides the best overall mechanical performance, while the effect of alkaline treatment on tensile strength and burning resistance does not show a consistent trend across all fiber fractions.
Co-Authors Anton Harseno Nanda Pardani Widyanita Harwijayanti Yudisworo, Waluyo Djoko