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All Journal Majalah Ilmiah MOMENTUM Journal of Mechanical Engineering Science and Technology Nusantara Science and Technology Proceedings Jurnal Pengbdian Teknik Mesin Biomedical and Mechanical Engineering Journal
Wahyu Dwi Lestari
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Transportation

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Alat Tanam Jagung yang Praktis Guna Mempermudah dan Mengurangi Biaya Produksi Kelompok Tani di Dramaga, Bogor, Jawa Barat Wiliandi Saputro; Wahyu Dwi Lestari; Luluk Edahwati; Radissa Dzaky Issafira; Ahmad Khairul Faizin; Ndaru Adyono; Tria Puspa Sari
Abdi-mesin: Jurnal Pengabdian Masyarakat Teknik Mesin Vol. 1 No. 2 (2021): Abdi-Mesin
Publisher : Program Studi Teknik Mesin Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Saat ini jagung menjadi komoditi tanaman pangan yang dibudidayakan oleh kelompok tani di Kecamatan Dramaga, Bogor, Jawa Barat. Pada proses tanam jagung, upah untuk pekerja dan jasa pertanian lainnya adalah komponen biaya produksi paling besar yang harus dikeluarkan para petani per musim tanam untuk satu hektar luas panen jagung. Perbandingannya mencapai 54% dari total biaya produksi yang harus dikeluarkan. Hal ini disebabkan oleh beberapa faktor diantaranya belum adanya suatu alat yang membantu petani dalam proses tanam jagung yang praktis, sehingga diperlukan banyak pekerja dan tenaga dalam prosesnya seperti pembuatan lubang tanam, penjatuhan benih, proses penutupan lubang tanam, serta perataan lubang tanam yang seluruhnya masih dilakukan secara manual. Cara ini dirasa petani membutuhkan banyak tenaga, biaya produksi yang tinggi, serta kurang efisien. Berdasarkan permasalahan tersebut, maka kami membuat alat tanam jagung yang praktis dan efisien di mana seluruh proses tanam jagung hanya dilakukan menggunakan satu mekanisme kerja pada alat. Dengan menggunakan alat ini membuat Kelompok Tani Jagung di Dramaga, Bogor menjadi sangat terbantu, pekerjaan petani menjadi lebih ringan, kualitas tanam lebih baik dan presisi, waktu yang dibutuhkan menjadi lebih singkat, tenaga yang dibutuhkan menjadi lebih sedikit, serta lebih praktis digunakan sehingga dapat mengurangi biaya produksi (upah pekerja dan biaya produksi lainnya).
Pemanfaatan Limbah Organik Kopi Menuju Desa Mandiri Pangan dan Energi Novel Karaman; Tria Puspa Sari; Ndaru Adyono; Wahyu Dwi Lestari; Radissa Dzaky Issafira; Ahmad Khairul Faizin; Wiliandi Saputro
Abdi-mesin: Jurnal Pengabdian Masyarakat Teknik Mesin Vol. 1 No. 2 (2021): Abdi-Mesin
Publisher : Program Studi Teknik Mesin Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Abstrak Dusun Kuntul Desa Kalipucang Kecamatan Tutur Kabupaten Pasuruan merupakan salah satu daerah penghasil kopi. Kurangnya pengetahuan dan keterampilan masyarakat daerah tersebut untuk mengelolah limbah organik yang dihasilkan dari kopi. Penyuluhan dan sosialisai tentang pemanfaatan limbah organik kopi kepada komunitas masyarakat di daerah tersebut sangat bermanfaat bagi kemandirian desa di bidang pangan dan energi. Metode yang digunakan adalah penyuuhan dan sosialisasi secara langsung kepada komunitas masyarakat, selain itu juga memberikan demonstrasi tantang memodifikasi kompor dan cara pemurnian biogas. Biogas tersebut didapatkan dari proses pembusukan bahan-bahan organik yang dihasilkan dari limbah kopi. Oleh karena itu, masyarakat di daerah tersebut mendapatkan pengetahuan dan keterampilan tentangpengolahan limbah organik menjadi biogas dari kegiatan ini.
Analysis of effect Magnesium Ammonium Phospate (MAP) Concentration on Struvite Morphology in A Vertical Reactor Luluk Edahwati; Sutiyono; Atika Andini; Wahyu Dwi Lestari; Tria Puspa Sari; Ndaru Adyono; Novel Karaman
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 1 No. 1 (2021): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Struvite was a white crystal known as Magnesium Ammonium Phosphate Hexahydrate (MgNH4PO4.6H2O). In industry, struvite was found in the pipes crust which the hot fluid through passes. Struvite is often used as fertilizer because it contains phosphate content. The one of benefits of struvite crystals is slow release fertilizer, so it can be more durable, which is good for the growth of the plants. The Precipitation technology is currently one of the most widely applied technologies in struvite formation. The process of forming struvite is carried out by using a vertical reactor. The process started by mixing the equimolar solutions of MgCl2, NH4OH, and H3PO4 with a concentration ratio of 1: 1: 1 and 1: 1: 2. The process was carried out with the condition at the 30°C while the air inlet rate was 1.25 liters/min. The pH of the solution is pH 9 and controlled using NaOH solution. The process was carried out in the steady state condition. Then the solution was filtered and solid was dried at room temperature for 48 hours. From this study, the concentration ratio of 1:1:2 was obtained the best composition of struvite compared to the others ratio. The solid was analyzed by using the SEM-EDX instrument. The morphology of struvite was formed an irregular pyramid-like crystal or commonly referred to as an authorhombic shape.
Perancangan Mesin Pengupas dan Pemarut Batang Ubi Kayu: Konsep Rancangan Mesin Novel Karaman; Ndaru Adyono; Tria Puspa Sari; Luluk Edahwati; Wahyu Dwi Lestari
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 1 No. 1 (2021): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Indonesia negara penghasil ubi kayu terbesar ke lima di dunia dimana produksi ubi kayu Nasional per tahun mencapai 23 juta ton. Disisi lain terdapat limbah organik berupa batang ubi kayu dengan potensi pemanfaatan kandungan alpha-selulosa batang yang besar. Alpha-selulosa merupakan bahan dari biomass yang sangat dibutuhkan dalam bidang industri maupun sumber energi yang terbarukan. Alpha-sellulose yang berkualitas tinggi dihasilkan dari serat batang ubi kayu yang telah dipisahkan bagian kulit luarnya. Penelitian dalam perancangan mesin yang mampu memproses pengupasan dan pemarutan batang ubi kayu secara bersamaan sangatlah berpotensi meningkatkan produktivitas pembuatan bahan baku Alpha-selulosa untuk kebutuhan industri. Perancangan purwarupa mesin pengupas dan pemarut batang ubi kayu menggunakan pendekatan elemen mesin diharapkan menghasilkan rancangan mesin yang memiliki spesifikasi motor penggerak utama 3 phase kapasitas 0,5 HP dengan putaran 1400 rpm yang terdiri dari 2 transmisi berupa pulley dan transmisi gear box ratio 60.
Wear Property of Machined Ultra High Molecular Weight Polyethylene (UHMWPE) Acetabular Liner Product with CNC Milling Wahyu Dwi Lestari; A T Danaryanto; A Nugroho; R Ismail; J Jamari; A P Bayuseno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

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Abstract

UHMWPE has been used as a cushion in artificial hip joint for the last decades. The reliability of the components of a hip joint implant can be achieved by understanding their wear behavior. This study observed the tribological performance of the UHMWPE acetabular liner manufactured with a CNC milling machine on the femoral head made of SS 316L. Materials commonly used for tribo pairs in hip joint replacement. The wear tests were performed on a hip joint simulator in dry condition. The wear test is carried out by applying a constant load of 800N. Before and after the wear test, measurements of surface roughness and dimensional accuracy were carried out on the UHMWPE acetabular liner specimen. The correlation between the surface roughness of the machining process and the wear rate is seen from the value of the wear depth and the wear coefficient obtained. The results showed that the machining process affects the surface roughness of the acetabular liner, where the roughness also affects the wear rate of acetabular liner product.
Control of Struvite (MgNH4 PO4 .6H2O) Scale Deposit in an Industrial Process Luluk Edahwati; Sutiyono; Radissa Dzaky Issafira; Ndaru Adyono; Wiliandi Saputro; Wahyu Dwi Lestari; Ahmad Khairul Faizin; Tria Puspa Sari
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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Abstract

Struvite or Magnesium Ammonium Phosphate Hexahydrate (MgNH4 PO4.6H2O) is one of the precipitates generally formed in the piping system. The formation of struvite in the piping system is one of the serious problems that can cause blockages, reduced flow volume, and pipe diameter to increase maintenance and production costs. This formation of struvite scale in the industrial instrument is detrimental; however, struvite can be used as raw material for slow-release fertilizers. This study will observe the effect of pH in the range of 8, 8.5, 9, 9.5, and 10 on the formation of struvite compositions, consisting of Mg, NH4, PO4, Ca, and K in the surrounding temperature of 35oC. The results of this study will be observed using visual MINTEQ software. The result shows that the most suitable pH for struvite formation is 9.5.
Wear Scar Characterization of Polycarbonate Urethane (PCU) By Raman Spectroscopy Wahyu Dwi Lestari; Luluk Edahwati; Ndaru Adyono; Tria Puspa Sari; Wiliandi Saputro; Ahmad Khairul Faizin; Radissa Dzaky Issafira
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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Abstract

Until now, the need for revision surgery and implant failure is still the main clinical problem in installing biomaterials in the human body. Mechanical testing is needed to determine the life of the biomaterial before it is implanted in the human body. Mechanical testing in this study was carried out using a pin on discs simulator, run for 50000 cycles in dry condition. PCU material is used as disc components and SS 316L as a pin. The following test parameters were used: normal load FN = 500 gram and sliding velocity 50 Rpm in dry condition. Chemical changes in the wear scar can cause a drift in friction level. This study aims to analyze the chemical surface changes in wear tracks of PCU after mechanical testing. For this, Raman spectroscopy was used to determine the chemical changes at the surfaces. The wear tracks developing between the metal on PCU were analyzed using these techniques. The results show that the chemical changes in the wear scars of the PCU disc are due to mechanical stress. Raman spectroscopy is used to observe the chemical changes on the wear scar due to the sliding test.
Program Pelatihan Perancangan Desain Universal Joint Sederhana Menggunakan Solidworks Kepada Para Guru di SMK Turen Ferdi Kurniawan; Ahmad Khairun Faizin; Wahyu Dwi Lestari; Wiliandi Saputro; Luluk Edahwati; Radissa Dzaky Issafira; Ndaru Adyono; Tria Puspa Sari
Abdi-mesin: Jurnal Pengabdian Masyarakat Teknik Mesin Vol. 2 No. 1 (2022): Abdi-Mesin
Publisher : Program Studi Teknik Mesin Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Abstrak - Program pelatihan perancangan universal joint merupakan salah satu wujud transfer of knowledge yang dilakukan untuk mengakselerasi peningkatan kemampuan guru SMK yang masih jarang mendapatkan pelatihan / upgrade skill dari instisusi diluar sekolah. Pada pelatihan kali ini digunakan software CAD (Computer Aided Design) “SOLIDWORKS” yang merupakan salah satu aplikasi CAD yang banyak digunakan dalam industri manufaktur dalam hal perancangan suatu desain produk. Program pelatihan ini diberikan kepada guru SMK yang terpilih sebanyak 10 guru di SMK Turen. Pelatihan dilaksanakan selama 2 hari secara tatap muka di lab desain manufaktur SMK Turen. Pelatihan dimulai dengan proses install software CAD SOLIDWORKS pada 10 komputer yang ada pada lab, yang dilanjutkan pengenalan dasar penggunaan aplikasi solidworks. Proses selanjutnya adalah pembuatan part dari universal joint sesuai dengan buku panduan yang telah diberikan, part yang dibuat meliputi : yoke, bushing, pin, dan swivet. Pada akhir kegiatan akan dilakukan proses assembly dari part serta penggambaran 2D. Hasil akhir dari proses assembly ini adalah universal joint sederhana, dan untuk penggambaran 2D akan menghasilkan gambar teknik yang dapat difungsikan untuk proses manufaktur dari universal joint tersebut. Di akhir kegiatan guru yang telah mengikuti pelatihan perancangan universal joint sederhana diberikan sertifikat sebagai bentuk apresiasi telah mengikuti pelatihan.
Energi Alternatif (Biogas) Pengganti Bahan Bakar Minyak Pada Masyarakat Pedesaan di Kabupaten Pamekasan Jawa Timur Novel Karaman; Luluk Edahwati; Ndaru Adyono; Tria Puspa Sari; Wahyu Dwi Lestari; Radissa Dzaky Issafira; Ahmad Khairul Faizin; Wiliandi Saputro
Abdi-mesin: Jurnal Pengabdian Masyarakat Teknik Mesin Vol. 2 No. 2 (2022): Abdimesin
Publisher : Program Studi Teknik Mesin Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/abdi-mesin.v2i2.70

Abstract

Abstrak-Teknologi biogas dari kotoran sapi merupakan salah satu alternatif sumber energi pengganti bahan bakar minyak pada masyarakat pedesaan sekaligus mengatasi masalah limbah organik di pedesaan sebagai sumber energi alternatif biogas. Biogas merupakan hasil proses pembusukan limbah organik secara anaerobic menjadi energi yang berfungsi sebagai pengganti bahan bakar minyak. Masyarakat desa Pancong Kecamatan Waru Timur di kabupaten Pamekasan sebagian besar mata pencaharian sebagai petani dan peternak. Khususnya petani/peternak di desa Pancong memiliki 2-3 sapi dan tidak menyadari bahwa kotoran sapi dapat menjadi bahan bakar alternatif (biogas). Metode menggunakan penyuluhan/pelatihan tentang pembuatan dan instalasi biogas sederhana, serta pendampingan dalam memproduksi biogas. Pelatihan diikuti oleh peternak/petani dan dilakukan di lokasi peternak desa Pancong kecamatan Waru Timur kabupaten Pamekasan. Perolehan produksi biogas dari kotoran sapi menghasilkan biogas yang terbentuk dialirkan ke penampung gas plastik. Gas terbentuk setelah diisi campuran kotoran sapi dan air (1:1), dan tercapai pada hari ke-6. Selanjutnya gas dapat dimanfaatkan sebagai bahan bakar. Setelah berproduksi perlu pengisian setiap hari. Biogas dapat digunakan untuk memasak sebagai kebutuhan sehari-hari dan produk samping (slurry) dapat dimanfaatkan untuk pupuk organik dan pakan ikan.
Analysis of effect Magnesium Ammonium Phospate (MAP) Concentration on Struvite Morphology in A Vertical Reactor Luluk Edahwati; Sutiyono; Atika Andini; Wahyu Dwi Lestari; Tria Puspa Sari; Ndaru Adyono; Novel Karaman
BIOMEJ Vol. 1 No. 1 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Struvite was a white crystal known as Magnesium Ammonium Phosphate Hexahydrate (MgNH4PO4.6H2O). In industry, struvite was found in the pipes crust which the hot fluid through passes. Struvite is often used as fertilizer because it contains phosphate content. The one of benefits of struvite crystals is slow release fertilizer, so it can be more durable, which is good for the growth of the plants. The Precipitation technology is currently one of the most widely applied technologies in struvite formation. The process of forming struvite is carried out by using a vertical reactor. The process started by mixing the equimolar solutions of MgCl2, NH4OH, and H3PO4 with a concentration ratio of 1: 1: 1 and 1: 1: 2. Theprocess was carried out with the condition at the 30°C while the air inlet rate was 1.25 liters/min. The pH of the solution is pH 9 and controlled using NaOH solution. The process was carried out in the steady state condition. Then the solution was filtered and solid was dried at room temperature for 48 hours. From this study, the concentration ratio of 1:1:2 was obtained the best of struvite compared to the others ratio. The solid was analyzed by using the SEM-EDX instrument. The morphology of struvite was formed an irregular pyramid like crystal or commonly referred to as an authorhombic shape.
Co-Authors A Nugroho A T Danaryanto Ahmad Khairul Faizin Ahmad Khairun Faizin Atanasius Priharyoto Bayuseno Atika Andini Faisal Kilo Ferdi Kurniawan J Jamari L.Urip Widodo, Yohandrik Novel Karaman Luluk Edahwati Luluk Edahwati Luluk Edahwati Luluk edahwati Mr. Sutiyono Ndaru Adyono Ndaru Adyono Novel Karaman Novriyanti Talango Nurmala Santi Dera R Ismail Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Sahional Ishak Sutiyono Tria Puspa Sari Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro