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All Journal Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan JMPM (Jurnal Material dan Proses Manufaktur) Journal of Engineering and Scientific Research (JESR) Infotekmesin Scientific Journal of Mechanical Engineering Kinematika International Journal of Aviation Science and Engineering Journal of Innovation and Technology Jurnal Profesi Insinyur Universitas Lampung Jurnal Vokasi Mekanika Journal of Applied Science, Engineering and Technology (J. ASET) Jurnal Rekayasa Lampung (JRL) Seminar Nasional Insinyur Profesional (SNIP) Jurnal Masyarakat Madani Indonesia Jurnal Kedokteran Hewan Jurnal Polimesin Jurnal Pengabdian kepada MASyarakat (J-PMAS) Nemui Nyimah
Irza Sukmana, Irza
Jurusan Teknik Mesin Fakultas Teknik Universitas Lampung, Bandar Lampung
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Magnesium and its alloys as Biomaterial for bone repair: advances, challenges and future direction in mechanical and tissue engineering research Jasmawati, Noor; Nafrizal; Zulhanif; Ibrahim, Fauzi; Sukmana, Irza
Journal of Applied Science, Engineering and Technology Vol. 5 No. 1 (2025): June 2025
Publisher : INSTEP Network

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47355/jaset.v5i1.77

Abstract

Interest in the application of biodegradable bone screw is driven by the increasing knowledge on biomedical materials and tissue engineering field. Currently, various polymeric- as well as metallic-based materials have been used as degradable bone screw. Biodegradable material is a desirable feature for bone screw since the goal is that it uses as a temporary structure holding a growing bone tissues until the bone fracture has sufficiently healed. Among others, magnesium and its alloys have a potential chance to serve as biodegradable bone screw applications, as it has mechanical properties similar to natural bone, lightweight, and biocompatible approved. This article aims to report current development and future potential use of magnesium-based metal for bone screw application. Techniques on manufacturing process, mechanical performance, and biocompatibility assessment of magnesium and its alloys are highlighted.
Sintering Behavior of Lampung Limestone-Based Hydroxyapatite for Use as a Bone Filler Material Saputra, Rizal Adi; Sukmana, Irza; Hendriyanto, Agus; Riszal, Akhmad; Hendronursito, Yusup; Wicaksono, Mahruri Arif
International Journal of Aviation Science and Engineering - AVIA Vol. 6 No. 2: (December, 2024)
Publisher : FTMD Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47355/avia.v6i2.141

Abstract

Limestone from Mount (Mt.) Beranti, Lampung Province, contains 97.43% calcium carbonate (CaCO₃), making it a suitable natural precursor for synthesizing hydroxyapatite (HA). HA is widely utilized as a bone tissue filler, particularly in treating osteoporosis. In this study, CaCO₃ was processed using ball milling at 300 rpm for durations of 2, 3, and 4 hours, followed by sintering at temperatures of 600°C, 800°C, and 1000°C for holding times of 2, 3, and 4 hours. FTIR analysis using the hydrothermal method on calcined limestone powder revealed characteristic peaks corresponding to phosphate (PO₄³⁻) at 1025.45 cm⁻¹, calcium oxide (Ca–O) at 1413.59 cm⁻¹, and hydroxyl (O–H) at 3030.33 cm⁻¹, which closely resemble those found in commercial HA. SEM-EDX analysis at 1000°C for 4 hours showed a homogenous microstructure, with EDX results indicating the highest concentrations of calcium and phosphate after milling for 2 hours. Vickers hardness testing confirmed the highest hardness value was also achieved at 1000°C for 4 hours. Overall, the FTIR, SEM-EDX, and microhardness results demonstrate enhanced properties of HA, supporting its effectiveness as a material for filling porous bone tissue. Keywords: Limestone; Hydroxyapatite (HA); Calcium Carbonate (CaCO3); Bone Filler
Effect of Sintering Temperature on The Adhesion Quality of Hydroxyapatite on Porous Tantalum for Cancellous Bone Implant Application Rahman, Nur Syazwani Binti Ab; Sukmana, Irza; Djuansjah, Joy R P; Tarkono; Sugiri, Agus; Saputra, Rizal Adi
Jurnal Inovasi Teknologi Vol 5 No 2 (2024): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

Porous tantalum has been recently recognized as a conventional orthopedic implant for bone substitute applications besides stainless steel, cobalt-chromium, titanium, and other metallic alloys. Porous tantalum has excellent mechanical and osseointegration properties similar to cancellous bone structure. To optimize the utilization, the dip coating technique was applied to coat porous tantalum with hydroxyapatite (HA). X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques investigate the coating characterization. HA is a bioceramic material that used for bone substitutes due to its chemical and structural similarity to bone minerals. Coated porous tantalum requires the sintering process of porous tantalum to adhere to HA. During the sintering process, various temperatures (650°C, 750°C, 850°C, 950°C, and 1100°C) were used to determine the optimum temperature for porous tantalum coated with HA. The heating rate is 1°C/1 min and the holding time is 60 minutes. The result shows that the optimum temperature of HA-coated porous tantalum is at 850°C. The morphology structure of the HA-coated porous tantalum shows that the adhesion between porous tantalum and HA is in good condition. The element in the HA-coated porous tantalum shows that the existence of HA is high. 
Comparison Study Between the Experimental and Finite Element Analysis (FEA) on a Static Load of Magnesium AZ31B as Biodegradable Bone Plate Material Wicaksono, Mahruri Arif; Sukmana, Irza; Akhmad Riszal; Hendronursito, Yusup; Nazarrudin, Rizal; Haviz, Muhammad
Jurnal Inovasi Teknologi Vol 5 No 2 (2024): October
Publisher : Engineering Forum of Western Indonesian Government Universities Board (Forum Teknik, BKS-PTN Wilayah Barat) Indonesia

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Abstract

Biomaterials is an advanced material engineering technology that is used to help heal bone fractures or fractures. Currently, many biomaterials use materials such as titanium alloy, stainless steel, platinum, and chromium, but these materials cannot be degraded naturally so a second operation must be carried out to remove the installed biomaterial. Biomaterials are temporary in nature so when the bone returns to its original state, the biomaterial must be surgically removed. Research was conducted to obtain a design with a material that can be naturally degraded without causing toxicity. Magnesium AZ31B is a recommended candidate as a base material for degradable bone implants. Magnesium AZ31B material, it is expected to reduce or minimize the surgical removal of implant biomaterials. Bone plate geometry  use plate  bone  dimension 150mm x 15mm x 3mm with  variation 10 hole parallel and zigzag as well as with a bolt  bone  dimensions  long 40 mm with pitch 1mm diameter 5mm. Test bending was conducted  with ASTM E290-14 showing  that on plate  bone  hole parallel  with  burden  maximum 33,419 KN with a deformation  maximum of 30.89 mm whereas  for  plate  bone  hole zig zag with the burden  maximum 32,863 KN with  deformation  maximum big as 29.97 mm. From the study  experimental  that  plate  bone  hole  parallel  have  nature  mechanic  more  tall  compared  with  plate  bone  hole zig Zag although  with the difference which is not significant. Whereas on simulation FEA plate bone  hole  parallel  with  burden 33,419 KN get  results total deformation  as big as 31,481 mm with von Mises stress 15,337 MPa, then  for  plate  bone  hole zig Zag with  burden 32,863 KN with total deformation 32.466 mm and von Mises stress as big as 33,948 MPa. In testing by  experiment and simulation FEA plate  bone  hole  parallel  get  difference  around 0.591 mm or 0.94% whereas  for  plate  bone  hole zig Zag in  testing  by  experiment and simulation  get  difference  around 2,893 mm or 4.60%.
PENYULUHAN PEMANFAATAN LATEKS MENJADI PRODUK KEPADA PETANI KARET DI DESA SUNGAI LANGKA, KECAMATAN GEDONG TATAAN KABUPATEN PESAWARAN, LAMPUNG Savetlana, Shirley; Sukmana, Irza; Supriadi, Harnowo; Zulhanif, Zulhanif; Saputra, Rizal Adi; Iza, Abdillah; Riofasesi, Daffa
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol. 9 No. 2 (2025): Vol. 9 No. 2 Juli 2025
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v9i2.564

Abstract

Luas perkebunan karet di Indonesia menurut data statistik adalah pada peringkat ketiga terbesar setelah sawit dan kelapa. Namun demikian petani karet masih sulit untuk memenuhi kebutuhan pokok mereka antara lain karena para petani menjual karet dalam bentuk lateks yang digumpalkan atau karet mentah. Sementara Indonesia walaupun merupakan negara pengekspor karet tapi juga sampai saat ini masih mengimpor karet jenis tertentu. Jika harga karet ditingkat petani tidak ada peningkatan maka petani akan sangat sulit memenuhi kebutuhannya maka lama kelamaaan, petani mungkin akan mengganti tanaman karet dengan tanaman lain sehingga produksi karet di Indonesia akan terus berkurang. Tim pengabdi dari Teknik Mesin Universitas Lampung menganggap hal ini penting sekali untuk dicarikan solusinya. Salah satu solusinya yaitu dengan cara meningkatkan pemahaman petani karet mengenai cara pembuatan lateks menjadi produk. Peningkatan pemahaman petani dilakukan dengan penyuluhan mengenai pembuatan lateks menjadi produk karet lembaran, sarung tangan karet, sepatu boot karet, dan karet pengikat. Hasil dari evaluasi kepada peserta penyuluhan menunjukan adanya peningkatan pemahaman pada petani karet mengenai cara membuat produk dari bahan lateks. Kata kunci: lateks, karet, karet lembaran, sarung tangan, sepatu boot karet, karet band, sungai langka
Study Analisis Elemen Tetrahedron dan Hexahedron Plat Tulang Material Magnesium AZ31B dengan Finite Element Method (FEM) Arif Wicaksono, Mahruri; Sukmana, Irza
Infotekmesin Vol 13 No 1 (2022): Infotekmesin: Januari, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i1.1039

Abstract

Metallic-based materials are commonly used as bone plates as well as orthopedic implants, due to their mechanical properties. This study aims to perform a finite element analysis based on three-point bending test data according to the ASTM F382-99 standard. The dimensions of bone plate material was 120 mm x 14 mm x 5 mm (length x width x thickness) with 6 and 10 screw holes. The load given to the plate analysis was 986.89 N with element size of 0.55 mm. The hexahedron elements have the total number of 62,179 elements for 6 holes and 62,960 elements for 10 holes. The total number of elements of the tetrahedron were 63,609 elements for 6 holes and 64,822 elements for 10 holes. Also, finite element analysis for plates with 6 holes and 10 holes using hexahedron elements yielded a total deformation of 6.1963 mm and 6.7852 mm, respectively. Furthermore, the tetrahedron element for plates with 6 holes and 10 holes resulted in a total deformation of 6.1762 mm and 6.7651 mm, respectively. Based on the above data, it can be concluded that the finite element analysis calculation for bone plate using hexahedron elements is more accurate when compare to the tetrahedrons.
PENGARUH IMPLANTASI POROUS TANTALUM BERLAPIS HIDROKSIAPATIT TERHADAP GAMBARAN DARAH MERAH TIKUS SPRAGUE DAWLEY Panjaitan, Budianto; G, Gunanti; Noviana, Deni; Fakhrul Ulum, Mokhamad; Sukmana, Irza
Jurnal Kedokteran Hewan Vol 8, No 2 (2014): September
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/j.ked.hewan.v8i2.2650

Abstract

Penelitian ini bertujuan mengetahui gambaran darah merah pada tikus yang diimplan porous tantalum berlapis hidroksiapatit. Dalam penelitian ini digunakan 12 ekor tikus jantan, galur Sprague Dawley, umur 3 bulan yang dibagi dalam tiga kelompok yaitu kelompok kontrol tanpa implant (K1), kelompok implan porous tantalum (K2), dan kelompok implan porous tantalum berlapis hidroksiapatit (K3). Pengambilan darah dilakukan melalui vena pada ekor di hari ke-0 sebelum pemasangan implan, ke-14, dan ke-30 setelah pemasangan implan. Pengamatan data parameter darah merah meliputi jumlah sel darah merah, kadar hemoglobin (Hb), dan persentase hematokrit. Hasil perhitungan jumlah sel darah merah, kadar Hb, dan hematokrit menunjukkan perbedaan yang tidak nyata (P>0,05) pada masing-masing kelompok perlakuan kecuali jumlah sel darah merah pada kelompok tikus yang yang diimplan dengan porous tantalum tanpa lapis meningkat pada hari ke-30 dan menunjukkan perbedaan dibandingkan kelompok lainnya (P
PERKUATAN TEBING SUNGAI MENGGUNAKAN SHEET PILE DENGAN PERKUATAN ANCHOR DAN PEMINDAHAN ARUS SUNGAI DENGAN KRIB Abdullah; SUKMANA, IRZA; Wardono, Herry
Seminar Nasional Insinyur Profesional (SNIP) Vol. 4 No. 1 (2024): Prosiding SNIP Vol.4 No.1 Tahun 2024
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/snip.v4i1.351

Abstract

Pemasangan bangunan perkuatan tebing sungai dan krib pada belokan aliran sungai dimaksudkan untuk mengurangi gerusan yang terjadi pada dinding sungai dan memindahkan arah arus sungai yang semula membentur dinding sungai agar pindah ke arah lain, sehingga melindungi tebing dari proses gerusan. Pemasangan krib pada awal memasuki belokan aliran sungai efektif digunakan, kemudian pada bagian tengah belokan aliran sungai efektif digunakan turap, dan pada akhir belokan pemasangan krib tidak efektif, Meskipun sudah dipasang batu baronjong namun kelongsoran itu pun tetap terjadi. Hal ini terjadi pada pemasangan beronjong di Desa Dusun Anyar Kabupaten OKI. Arus sungai yang kuat membentur dinding sungai mengakibatan beronjong runtuh dan terjadi longsor. Begitu pula yang terjadi di Desa Serapek Kabupaten OKI. Pemasangan batu beronjong diatas tidak efektif, maka perlu dilakukan bentuk lain dari struktur perkuatan tebing. Turap adalah konstruksi yang dapat menahan tanah disekelilingnya, mencegah terjadinya kelongsoran, Jenis turap yang dipakai padapemasangan perkuatan tebing di Desa Serapek adalah turap jenis CCSP dengan tiang tegak, yang terdiri dari jajaran tiang-tiang. Dalam merencanakan suatu konstruksi turap perlu dilakukanperhitungan terhadap struktur tebing sungai yang akan direncanakan disepanjang alur sungai. Dalam pelaksanaan pemasangan turap, untuk memperkuat bangunan turap maka dipasang anchur yang yang menumpu pada balok anchur yang ditanam pada bagian dalam turap. Hal ini akan membantu menambah kekuatan turap terhadap tekanan tanah pada bagian dalam turap.
Development of a sodium chloride (NaCl) eutectic phase change material for fish cold storage applications Risano, Ahmad Yudi Eka; Eriyadi, Riko; Irsyad, Muhammad; Sukmana, Irza; Sugiri, Agus; Saputra, Rizal Adi; Wahyudi, Heru
Jurnal Polimesin Vol 23, No 2 (2025): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i2.5547

Abstract

Sustainable marine resource management is essential, as the sea provides a vital source of nutrition for humans. Fish and shellfish are highly perishable, making effective low-temperature storage systems crucial for preserving their quality. This research developed a cold storage system utilizing Phase Change Material (PCM) for low-temperature applications. While water is commonly used as a PCM due to its excellent thermal properties, it is unsuitable for low-temperature applications because of its 0°C freezing point. To overcome this, sodium chloride (NaCl) was introduced as a solute to lower the freezing point, resulting in eutectic salt solutions with 3%, 6%, and 9% weight concentrations. Thermal characterization revealed that the 9% wt. NaCl solution exhibited the most favourable properties, achieving a freezing point of -5.8°C while maintaining a latent heat of fusion comparable to water. Experimental validation demonstrated that 5.6 kg of the 9% NaCl solution effectively maintained 5 kg of fish at approximately 0°C for 24.3 hours, with minimal temperature fluctuation. Organoleptic evaluation yielded a score of 8 at a 95% confidence level, indicating excellent preservation quality. These findings highlight the potential of NaCl eutectic solutions as cost-effective, sustainable alternatives to conventional refrigeration methods for seafood storage.  
ANALYSIS REMANING LIFE ASSESSMENT (RLA) SHELL 1st STAGE SEPARATOR USING API 510 STANDARD Syaukani, Muhammad; Suharno, Suharno; Sukmana, Irza; Mahesa, Iqbal; Pujiyulianto, Eko
Jurnal Vokasi Mekanika (VoMek) Vol 6 No 1 (2024): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v6i1.627

Abstract

This study aims to conduct a Remaining Life Assessment (RLA) on the shell 1st stage separator. The process is carried out through the stages of calculating the minimum permissible shell thickness, MAWP, corrosion rate, and determining the operational feasibility of the separator. The method used is non-destructive test (NDT) inspection to determine the minimum actual thickness. Calculations were made using the API 510 standard. Based on the evaluation of the minimum thickness and MAWP value, the 1st separator shell is still feasible to operate. The ST corrosion rate that occurred in 2012, 2016, and 2019 was 0.123 mm/year, respectively; 0.007 mm/year; and 0.023 mm/year. While the LT corrosion rate is 0.089 mm/year, RLA analysis shows that the remaining life in 2012 was 93.75 years, 93.42 years in 2016, and 92.63 years in 2019. Thus, the shell 1st stage separator is still feasible to operate.
Co-Authors A.Yudi Eka Risano Abdullah Agus Sugiri, Agus Akhmad Riszal Aleksander Purba Ambar Pambudi Anwar, Syaipudin Arif Wicaksono, Mahruri Arif, Zainal budianto panjaitan Chyanegoro, Arifo Gunawan Deni Noviana Dikpride Despa Djuansjah, Joy Djuansjah, Joy R P Dwi Gustiono, Dwi Eko Pujiyulianto Eriyadi, Riko Gunanti . Hamdani, Fadil Harnowo Supriadi, Harnowo Hendriyanto, Agus Herlina, Ulin Herry Wardono HERU WAHYUDI Hutama, Saka Mahidaya Ibrahim, Fauzi Iza, Abdillah Jasmawati, Noor M. Haviz Mahesa, Iqbal Martinus, Martinus Mokhamad Fakhrul Ulum, Mokhamad Muhammad Irsyad Muhammad Syaukani Muhammad Yusuf Nafrizal Nazarrudin, Rizal Paundra, Fajar Pujiyulianto, Eko Rahman, Nur Syazwani Binti Ab Ramadhan, Muhammad Afin Rifaldi, Dwi Riofasesi, Daffa Risano, Yudi Risano, Yudi Eka A Riszal, Akhmad Rizal Adi Saputra Safii, Rizal N Sari, Ratna Kurnia Shirley Savetlana, Shirley Siti mutmainnah SUGIYANTO Sugiyanto - Suharno Suharno Syazwani, Nur Tarkono Tarkono Tarkono Utoyo , Bambang Vadival, G N Wicaksono, Mahruri Arif Yusup Hendronursito, Yusup Zulhanif Zulhanif, Zulhanif