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All Journal Jurnal Teknik Mesin Jurnal Teknologi Dan Sistem Informasi Bisnis
Hamzah, Reodhy
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Automotive Engineering Computer Science & IT Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Peningkatan Ikatan Adhesi terhadap Pengurangan Retak Lapisan PVA pada Ti-6Al-4V ELI untuk Aplikasi Biomedis Ardhy, Sanny; Islahuddin, Islahuddin; Putra, Meiki Eru; Hamzah, Reodhy; Zulfikar, Zulfikar
Jurnal Teknologi Dan Sistem Informasi Bisnis Vol 6 No 2 (2024): April 2024
Publisher : Prodi Sistem Informasi Universitas Dharma Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47233/jteksis.v6i2.1267

Abstract

The lack of adhesion bonding of the hydroxyapatite (HA) coating layer on the surface of implant material can cause the coating layer to peel off during implantation and will increase the risk of metallic ion release to human body and may also to increase inflammatory effect and slow down the osseointegration process. In order to increase the adhesion of HA coated Ti-6Al-4V ELI by adding Zirconium Oxide (ZrO2) into the coating layer.The coating process of the HA suspension with addition ZrO2 into Ti-6Al-4V ELI sample surfaces was conducted by using dip-coating method. The samples were then heated at 800, 900, and 950 °C. The improvement of adhesion coating was correlated by calculating the removed area. The low value of removed coating area indicated the adhesion coating is good. The test specimen with the addition of ZrO2, has a removed area fewer than the test specimen without the addition of PVA- ZrO2 has. This shows that the test specimen with the addition of ZrO2 has good coating adhesion.The addition of PVA- ZrO2 to the HA suspension increases adhesion bonding of the coating layer, as indicated by the low removed area as compared to that of without PVA- ZrO2 coating.
Studi Kelayakan Pemanfaatan PV sebagai Sumber Energi Ruang Pendingin Karkas Ayam Broiler Efendi, Mutiara; Hamzah, Reodhy; Indah Negara, Vamellia Sari; Araliz, Maheka Restu
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1631

Abstract

When chicken prices drop, farmers often extend the harvesting period, which inevitably increases production costs. An alternative solution is to store chickens as carcasses in cooling storage. Indonesia has significant solar energy potential for the implementation of solar cooling storage technology to reduce electricity costs as a power source for cooling storage. This study aimed to analyze the economic feasibility of designing solar cooling storage with a one-ton carcass capacity. The research method involved analyzing the costs of implementing cooling storage by comparing the costs of electricity sourced from PLN, solar energy using PV, and extending the harvesting period by up to 10 days. The analysis results showed that the designed cooling storage had a capacity of 12 m³, and the production costs for storing carcasses using hybrid PLN and PV electricity were more efficient than using PLN electricity alone. This cost-saving approach is significantly more efficient than the production costs incurred when farmers extended the harvesting period. In terms of economic feasibility, the BEP values for PLN and PV electricity sources were 18.86 and 21.02 years, respectively. The calculations showed a BEP difference of approximately 5 years between PLN and PV electricity; however, economically, PV systems were more advantageous in the long term.
Co-Authors Araliz, Maheka Restu Efendi, Mutiara Fachry Abda El Rahman Islahuddin, Islahuddin Meiki Eru Putra Sanny Ardhy Vamellia Sari Indah Negara