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All Journal Jurnal Teknik Mesin Buletin Udayana Mengabdi Jurnal Energi Dan Manufaktur Jurnal Teknosains Rekayasa Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Advances in Tropical Biodiversity and Environmental Sciences Jurnal Pendidikan Teknik Mesin Undiksha Bahasa dan Seni: Jurnal Bahasa, Sastra, Seni, dan Pengajarannya Makara Human Behavior Studies in Asia Logic : Jurnal Rancang Bangun Dan Teknologi
Tjokorda Gde Tirta Nindhia
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Udayana
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Veterinary

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APLIKASI ERGONOMI UNTUK MENINGKATKAN PRODUKTIVITAS PENGERAJIN SENI UKIR BATU PARAS DI DESA SAKTI NUSA PENIDA Y.P Sudarmojo; T.G.T Nindhia; I.G.A.K Suriadi; I.W Surata; I.B.P Adnyana
Buletin Udayana Mengabdi Vol 15 No 2 (2016): Jurnal Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

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Abstract

Tujuan pengabdian ini adalah untuk mengetahui hasil implementasi ergonomi pada pengerajin seni ukir batuparas di desa Sakti. Desa sakti adalah salah satu desa di Kecamatan Nusa Penida,dimana beberapa diantarapenduduknya ada yang menekuni pekerjaan sebagai pengerajin seni ukir batu paras. Batu paras ukirumumnya digunakan untuk bangunan tempat suci seperti pura dan sanggah, serta sebagai aksesoris bangunanrumah. Pengerajin seni ukir paras pada umumnya bekerja dalam ruang/bangunan darurat dengan peralatankerja yang sederhana. Kondisi dan lingkungan kerja sangat tidak nyaman, hal ini karena tempat kerjanyaberupa emperan, terpapar panas matahari, angin, dan debu. Sementara sikap kerja pengerajin juga tidakalamiah,dengan peralatan yang tidak sesuai antropometri. Kondisi demikian menyebabkan pekerja cepatlelah, mengalami gangguan muskuloskeletal, dan nyeri pinggang serta berdampak pada rendahnyaproduktivitas. Untuk mengatasi masalah ini maka dilakukan intervensi ergonomi berupa penggunaanlandasan sebagai alas benda kerja, penggunaan tempat duduk, pelatihan cara mengangkat beban, danmembiasakan memakai alat pelindung diri (APD). Untuk mempercepat proses pemotongan dan penghalusanpermukaan disumbangkan satu unit alat electic cutter circle. Hasilnyadapat dilihat daricara dan sikap kerjayang sudah alamiah, cara mengangkat beban dengan teknik squat, dan kebiasaan menggunakan masker.Dengan demikian dapat disimpulkan aplikasi ergonomi dapat meningkatkan kenyaman dan produktivitaskerja.
PENGEMBANGAN POTENSI DAN PEMBERDAYAAN MASYARAKAT DESA SAKTI KECAMATAN NUSA PENIDA KABUPATEN KLUNGKUNG I.W. Surata; T.G.T. Nindhia
Buletin Udayana Mengabdi Vol 16 No 3 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

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Abstract

Desa Sakti adalah salah satu desa dari 16 desa yang ada di wilayah Kecamatan Nusa Penida, Kabupaten Klungkung, yang memiliki berbagai potensi dalam bidang pertanian seperti perkebunan, peternakan, dan pariwisata. Namun potensi ini belum digarap secara optimal, karena mereka belum memiliki keterampilan dalam memanfaatkan teknologi tepat guna. Tujuan pengabdian ini adalah memberi pemahaman dan keterampilan kepada masyarakat melalui penyuluhan, pelatihan, demonstrasi, dan pendampingan, agar memiliki kemampuan untuk mengembangkan potensi yang dimiliki dalam bidang pertanian dan pariwisata. Berbagai kegiatan telah dilakukan melalui pelaksanaan program KKN-PPM yang meliputi pelatihan dan penyuluhan kesehatan ternak sapi dan babi, pembuatan pakan ternak dengan teknologi fermentasi, pembuatan pupuk organik, pembuatan biogas, perbaikan stasiun kerja pengerajin seni ukir batu paras, dan pengelolaan pariwisata. Pelaksanaan kegiatan ini melibatkan berbagai akhli sebagai penyuluh atau pelatih yang memiliki kepakaran sesuai dengan topik kegiatan. Semua program dapat terlaksana dengan baik karena partisipasi dan antusiasme masyarakat. Selain memberikan penyuluhan dan pelatihan juga telah menyumbang berupa bahan mikroba efektif untuk meningkatkan kualitas pakan ternak, bahan membuat pupuk organik, dan bantuan electrical cutter untuk memotong batu paras. Hasil kegiatan ini diharapkan dapat meningkatkan pemberdayaan masyarakat berupa memperkuat sistem pengelolaan, serta meningkatkan produktivitas kerja.
Pemurnian Biogas Dari Gas Pengotor Hidrogen Sulfida (H2S) Dengan Memanfaatkan Limbah Geram Besi Proses Pembubutan Komang Metty Trisna Negara; Tjokorda Gde Tirta Nindhia; I Made Sucipta; I Ketut Adi Atmika; Dewa Ngakan Ketut Putra Negara; I Wayan Surata; A.A.I.A. Sri Komaladewi
Jurnal Energi Dan Manufaktur Vol 5 No 1 (2012): Oktober 2012
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

This research is intended to utilize waste steel chips from the process of turning (process in which lathemachine is used) for purification of biogas from the gas of hydrogen sulfide (H2S) contaminant to supportthe promotion of zero waste industrial and manufacturing process in the world. The waste of Iron chips iscollected and selected. Only long and spiral like of iron chips that are useful for this purpose. Since thechips having residual stress due to strain hardening during turning process, then the annealing processshould be done before compacting to form a billet.The thickness of the billet was 1 cm and 6 cm indiameter with weight 500 gram. The annealing proces was carried out by burning the iron chip until reachthe red color of fire. During the annealing process the iron inside the steel will react with oxygen to formiron oxide (Fe2O3) and if during oxidation there is a water vapor in the air then the iron bog ore Fe(OH)3 willbe formed. Both of Fe2O3 and Fe(OH)3 are very reactive to H2S and therefore able to eliminate the H2Scontaminant inside the Biogas. The billet is used as a filter and to be installed in the line of biogasdistribution. The result indicate that the the iron chips is potential to be utilized to reduce the H2Scontaminant in the biogas
Potensi bambu swat (gigantochloa verticillata) sebagai material karbon aktif untuk adsorbed natural gas (ANG) Dewa Ngakan Ketut Putra Negara; Tjokorda Gde Tirta Nindhia; I Wayan Surata; Made Sucipta
Jurnal Energi Dan Manufaktur Vol 9 No 2 (2016): Oktober 2016
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak:Bambu merupakan material biomassa yang banyak diteliti, diproduksi sebagai karbon aktif dan diaplikasikan di berbagaibidang kehidupan. Namun sangat sedikit bahkan hampir tidak ditemukan referensi yang membahas kegunaan karbonaktif dari bambusebagai adsorbent untuk Adsorbed Natural Gas (ANG). Penelitian ini difokuskan untukmengkarakterisasai dan menevaluasi potensi bambu swat (Gigantochloa verticillata) sebagai material dasar karbon aktifuntuk aplikasi ANG. Pengujian yang dilakukan meliputi uji proximate, uji ultimate, uji komposisi kimia dan pengamatanstruktur mikro. Hasil penelitian menunjukkan bahwa bambuswat memiliki kandungan lignin 22,9920%, selulosa44,2247%, volatile 88’32%, carbon 43,42%,ash 1,83%, silica (1,8664%) dan nitrogen 1,7065%. Bambu swat memilikiikatan pembuluh yang terdiri atas satu ikatan pembuluh (xilem dan floem) dan dua ikatan serat yang terletak di sebelahdalam dan luar dari ikatan pembuluh.Secara umum dapat dikatakan bahwa bamboo jenis ini memiliki kandungansellulosa, volatile dan karbon yang cukup tinggi serta ash, silica, hydrogen dan nitrogen yang rendah sehinggabambuswat sangat berpotensi digunakan sebagai material sumber karbon aktif.Kata kunci: Karbon aktif, bambu swat, ANG, lignin, sellulosa, analisa ultimate dan proximatesAbstract:Bamboo is a biomass material widely researched, produced as activated carbon and applied in various life fields.However, very little or almost no references were found with regard to utilization of bamboo activated carbon asadsorbent for Adsorbed Natural Gas (ANG). This study is concerned to characterize and evaluate potency of bambooswat (Gigantochloa verticillata) as aprecursor of activated carbon for ANG application. Examinations conducted wereproximate, ultimate, chemical composisition tests and microstructure observation. The results showed that bambooswathave a lignin content 22.9920%, cellulose 44.2247%, volatile 88.32%, carbon 43.42%, ash 1.83%, silica 1.8664% andnitrogen 1.7065%. The type of bamboo swat vascular bundles consist of a single bond vessels (xylem and phloem) andtwo ligament fibers are located on the inside and outside of the vascular bundles.Generally, it can be said this type ofbamboo has high contents of cellulose, volatile and carbon and low contens of ash, silica and nitrogen so that it hasgreat potential as a source of activated carbon..Keywords: Activated carbon, bamboo swat, ANG, lignin, cellulosa, ultimate and proximate analysis
Studi Struktur mikro Silikon dalam Paduan Aluminium-Silikon pada Piston dari Berbagai Merek Sepeda Motor Tjokorda Gde Tirta Nindhia
Jurnal Energi Dan Manufaktur Vol 4, No.1 April 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

This research introduce microstructure of silicon in aluminium-silicon alloys that were collected from varietymanufacture company that available in Indonesia such as Vespa, Suzuki, Kawasaki, Honda, and Yamaha. The microstructureobservation was conducted followed standard metallurgy test for aluminium. The result is presented in the form of metallographicfrom each specimen followed by literature study to obtain information regarding process and its properties related withapplication as a piston. It is revealed from this observation that the microstructure of silicon was found vary depend on whichcompany it’s coming from. The primarily differences were found from the silicon size and the texture. These differences makeeach piston having its own characteristic and properties that make it different one another related to wear resistance
PengaruhKorosiAir LautpadaKekuatanTarik SambunganLas KombinasiStainless Steel 304-201 Tjokorda Gde Tirta Nindhia
Jurnal Energi Dan Manufaktur Vol 8 No 2 (2015): Oktober 2015
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak:Instalasi konstruksi yang dibangun dengan bahan stainless steel merupakan pilihan pertama dari daftar lis yang akan digunakan untuk konstruksi dekat laut. Dengan ditemukannya teknologi tungsten inert gas (TIG) belakangan ini maka kontruksi dengan bahan stainles steel dapat direalisasikan. Dalam beberapa kasus sampungan las stainless steel dilakukan dengan menyambung dengan stainless steel dari jenis yang berbeda tanpa peduli dengan kekuatan yang dihasilkan khusunya jika mengalami korosi dalam hal ini korosi akibat air laut. Dalam penelitian ini kekuatan tarik sambungan kombinasi stainles steel dari jenis 304- 201 diuji dan dibandingkan dengan sambungan sejenis dari jenis 304-304 dan 201-201 Pengerauh korosi air laut terhadap kekuatan tarik sambungan stainless steel tersebut juga diteliti. Penelitian menemukan bahwa kekuatan tarik paling tinggi dimiliki oleh sambungan sejenis 304-304 diikuti oleh samnbungan kombinasi 304-201 dan yang terendah adalah sambungan 201-201. Pengaruh korosi airlaut diketahui menurunkan kekuatan dari semua jenis sambungan Kata Kunci : Stainless steel, las, air laut, korosi, kekuatan tarikAbstract:Installation of construction made from stainless steel is in the first list to be selected for location near the sea. The construction is by recent technology is much realize by using welding technology especially tungsten inert gas (TIG). In some case the welded joint of stainless steel are realized by joining 2 different type of stainless steel such as between type of 304 and 201 without any concern to the strength that will be achieved especially after exposure to the sea water. In this research the tensile strength of a combination of welding between stainless steel of 304- 201 is tested and compare to the welded of 304-304 and welded of 201-201. The effect of sea water corrosion in 30 days to the strength of the welded joint is observed . It is found that the tensile strength of welded 304-304 is found the highest followed by welded 304-201and the next is welded 201-201.The effect of sea water corrosion was found reduce all the tensile strength of the welded joint. Keywords:Stainless steel, welded, sea water, corrosion, tensile strength
Studi Hubungan Struktur Mikro dan Keaktifan Zeolit Alam Akibat Proses Pengasaman Made Cuaca Vahindra Suriawan; Tjokorda Gde Tirta Nindhia
Jurnal Energi Dan Manufaktur Vol 4, No.2 Oktober 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Natural zeolite is known as metal pollutant adsorbent in industrial waste treatment. As initial study for utilization ofnatural zeolite from Indonesia for metal pollutants adsorbent in liquid waste, then the physical properties should berecognized first. Activation is the first step in order to the natural zeolite able to adsorb the metal pollutants in the waste.One method to activate is by applying acid solution such as sulfuric acid (H2SO4) to activate the natural zeolite. The purposeof this research is to observe the change on microstructure of natural zeolite obtained from the mining at Tasikmalaya, WestJava, Indonesia due to chemical activated, to be compared to one without chemical activation. The variation of concentrationof H2SO4 namely: 2 4 , 6, 8, and 10 % , with 30 minutes soaking time , in a room temperatur. The microstructure then isobserved by using optical microscope following standard for ceramography. The change in microstructure then is analyzedand studied to be related with the ability of natural zeolite in adsorb the metal pollutant. The level activity of the zeolite canbe recognized by measuring its porosity.
Analisis Kegagalan Korosi pada Tangki Penyimpan Air Panas Terbuat dari Baja Nirkarat Tjokorda Gde Tirta Nindhia; I Putu Widya Semara; I Wayan Putra Adnyana; I Putu Gede Artana
Jurnal Energi Dan Manufaktur Vol 7 No 1 (2014): April 2014
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak : Suatu tangki penyimpanan air panas yang dalam kasus ini terbuat dari baja nirkarat (stainless steel)mengalami kegagalan karena korosi terutama pada bagian sambungan las. Korosi juga terjadipada bagian bawah tanki. Tanki telah digunakan kurang lebih di bawah satu tahun namun sudahmengalami korosi parah terutama pada bagian sambungan las dan juga mengalami korosi padabagian bawah. Penelitian ini bertujuan mengetahui penyebab terjadinya korosi. Penelitiandilakukan dengan menggunakan teknik pengamatan metalografi langsung dilapangan denganmenggunakan mikroskop metalurgi portable. Hasil pengujian menunjukkan korosi terjadi akibatkorosi galvanik yaitu sambungan dua jenis logam nirkarat yang berbeda dan diperparah denganterjadinya korosi pitting. Pengujian dengan menggunakan sinar X fluorisensi juga membuktikanbahwa pelat bagian bawah tanki dan pelat bagian samping dan atas ternyata memiliki kandunganyang berbeda. Untuk mengatasi hal ini maka teknik pengelasan harus ditingkatkan denganmenggunakan logam pengisi yang tepatKata kunci: tanki, air panas, korosi, baja nirkarat, galvanik, pittingAbstract : Hot water storage tank that was made from stainless still was investigated in this case. The tankwas found failure in service due to corrosion in welded section. Corrosion also was found at thebottom part of the storage tank. The tank was used for no longer than one year but unfortunatelysevere corrosion was found. The purpose of this research is to find the reason why the tank easilycorroded especially at the bottom part and at the welding section. The research was carried out byconducting metallographic examination directly in situ by utilizing portable metallographicmicroscope. It is found from investigation that the corrosion was happen due to galvanic corrosion.Investigation by using X ray fluorescence also agree that the composition of the bottom part of thetank was different with the wall, and upper section. The welding filler also was found not correctlyprepared that make pitting corrosion to occur. It is suggested to conduct advance research toinvestigate the correct composition for the filler during welding.Key word: Tank, hot water, corrosion, stainless steel, galvanik,pitting
Interaksi antara Proyektil dan Komposit Polimer diperkuat Butiran Silikon Karbid (SiCp) dan Serat Karbon pada Pengujian Balistik Daud Simon Anakottapary; Tjokorda Gde Tirta Nindhia
Jurnal Energi Dan Manufaktur Vol 4, No.2 Oktober 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

With increasing the security treat and terrorisms that involving the use of firearm and to optimize the security thenmaximum protection for he safety of the security guards, armies, and polices should be put in consideration. In order toconduct their duties properly and to protect their safety, the security guard should be completed with bulletproof body armor.Since the price of commercial bulletproof body armors is very expensive that only special force is possible to have it. It is thepurpose of this research to develop material for bulletproof body armor with reasonable price but having good performancethat can be used by security guard. In this research the SiCp was pressed in order to have a diameter surface in the 11.5cmand high 1 cm mould. Afterward the mixture of polyester and carbon fiber was poured in to the mold until reach 1 cmthickness. The natural cooling was done naturally for about 24 hours with addition of catalyst to solidify the composite. Theballistic test performance will be conducted with cooperation with the institution that has authority for this activity, and theresult will be analyzed and reported.
Studi Pengaruh Aktifasi Termal terhadap Struktur Mikro dan Porositas Zeolit Alam I Putu Putra Widia Semara; Tjokorda Gde Tirta Nindhia
Jurnal Energi Dan Manufaktur Vol 4, No.2 Oktober 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Zeolite is known as a material having ability as an adsorbent for metal pollutant in both liquid and gas wastes. Asinitial study in utilizing natural zeolite, and in order to be understood its possibility to control the dangerous metal pollutantfrom the liquid and gas wastes, then research regarding physical properties from the natural zeolite should be conductedfirst. The natural zeolite will be able to adsorb the metal pollutant in the waste if already be activated, and one of the methodto activate is by applying thermal activation technique or heating. The purpose of this research is to observe the change onmicrostructure to be related with porosity of natural zeolite from Sukabumi, West Java, Indonesia due to thermal activated,to be compared to one without thermal activation. The temperature variations for thermal activation namely: 100, 200, 300,400, and 500 o C with all have the same holding time 15 minutes. The microstructure then is observed by using stereo opticalmicroscope following the standard of ceramography standard. The change in microstructure then is analyzed and studied tobe related with the ability of natural zeolite to adsorb the metal pollutant
Co-Authors A. S. Ferdinand Anak Agung Istri Agung Sri Komaladewi Andhika, Rizki Anton S Ferdinand Ferdinand D. N. K. P. Negara D.N.K.P Negara D.N.K.P. Negara D.N.K.P. Negara Daud Simon Anakottapary David Lie Dewa Ngakan Ketut Putra Negara Dewa Putra Negara Dewa I Gusti Agung Kade Suriadi I Gusti Komang Dwijana I Gusti Ngurah Nitya Santhiarsa I Ketut Adi Atmika I Made Joni I Made Widiyarta I Made Widiyarta Made I Nengah Suarnadwipa I Putu Ari Astawa I Putu Gede Artana I Putu Putra Widia Semara I Putu Widya Semara I Wayan Bandem Adnyana I Wayan Putra Adnyana I Wayan Surata I Wayan Widhiada I. K. A. Atmika I. P. Hariwangsa I.B.P Adnyana I.B.P. Purwadnyana I.D.G.P. Swastika I.D.M.K. Muku I.D.N.P. Swastika I.G.N.W. Gunawan I.K.A Atmika I.K.A. Atmika I.P.A. Astawa I.W.A.R. Dana Ida Bagus Putu Purwadnyana K. Sebayuana Komang Metty Trisna Negara Luh Putu Ike Midiani M Sucipta Made Cuaca Vahindra Suriawan Made Sucipta Negara, I Gede Artha R. Antara Tjokorda Sari Nindhia Tjokorda Udiana Nindhia Pemayun Pemayun, Tjokorda Udiana Nindhia Pemayun Tomáš Ruml UDIANA NINDHIA PEMAYUN, TJOKORDA Wayan Nata Septiadi Widiantara, Ida Bagus Gde Y.P Sudarmojo Zdenek Knejzlík