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All Journal Jurnal Penelitian Saintek INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni EKSAKTA: Journal of Sciences and Data Analysis SPEKTRUM INDUSTRI International Conference on Engineering and Technology Development (ICETD) Medical Journal of Indonesia Rekayasa Mesin Folia Medica Indonesiana Journal Industrial Servicess The Indonesian Biomedical Journal Molecular and Cellular Biomedical Sciences (MCBS) JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Seminar Nasional Teknologi Informasi Komunikasi dan Industri Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Respirologi Indonesia Jurnal Ilmu dan Teknologi Kesehatan Pharmaceutical Journal of Indonesia Majalah Patologi Indonesia Jurnal Ilmiah Teknik Industri Kumawula: Jurnal Pengabdian Kepada Masyarakat Health Information : Jurnal Penelitian Journal of the Indonesian Medical Association : Majalah Kedokteran Indonesia Jurnal Ilmiah Kesehatan Jurnal Ners jurnal Teknik Industri - Unisi Jurnal Rekayasa Industri (JRI) Indonesian Journal of Global Health research BioEksakta : Jurnal Ilmiah Biologi Unsoed Hubungan Tingkat Pengetahuan Petugas Pengelola Obat dengan Tingkat Ketersediaan Obat Di Puskesmas Kota Malang JOURNAL LA MEDIHEALTICO Journal of Engineering and Applied Technology Narra J Jurnal Perak Malahayati : Pengabdian Kepada Masyarakat Jurnal Rekayasa, Teknologi, dan Sains Jurnal Ilmiah Kesehatan (JIKA) The Indonesian Journal of Gastroenterology, Hepatology and Digestive Endoscopy Indonesian Journal of Applied and Industrial Sciences (ESA) Jurnal Pustaka Dianmas Jurnal Bakti Masyarakat Manajemen Jurnal Penelitian dan Pengabdian Kepada Masyarakat (JPPM) Proceedings Book of International Conference and Exhibition on The Indonesian Medical Education and Research Institute Jurnal Polimesin Jurnal Akuntansi Pajak dan Manajemen

Heri Wibowo

Jurusan Pendidikan Teknik Mesin, Fakultas Teknik, Universitas Negeri Yogyakarta

Author-ID : 2910164

Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences Transportation Veterinary Other

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Analisis Pengendalian Persediaan Bahan Baku Keripik Pisang dengan Pendekatan Lot Sizing (Studi Kasus pada IRT. Tiga Saudara Bandar Lampung) Wibowo, Heri ; Sidiq , Ahmad ; Supriono , Untung
Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Vol 1 (2018): PROSIDING SENTIKUIN
Publisher : Fakultas Teknik Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (625.864 KB)

IRT Tiga Saudara was one of home industry in banana chips field product. Therefore it needed the one method to optimize the raw material inventory and decrease the order cost. The raw material inventory control could use lot sizing approach. The Result showed that accurate forecasting method was linear regression method, because it had Mean Absolute Deviation (MAD) was 510.416, so it was still in upper control limit and lower control limit after Moving Range chart test. The lot sizing method that had lowest total inventory was Economic Order Quantity (EOQ), with optimal order was 526 kg and it was ordered 72 many times during 12 period in one year, reorder point level when raw material before end was 299 kg. The safety stock was 73 kg, so that the total cost was Rp. 790.500,-.

Identifikasi Penyebab Kerusakan Produk Karet SIR 20 Dengan Menggunakan Metode Failure Mode And Effect Analysis (FMEA) Wibowo, Heri; Khikmawati , Emy; Setiawati, Indah
Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) Vol 3 (2020): PROSIDING SENTIKUIN
Publisher : Fakultas Teknik Universitas Tribhuwana Tunggadewi

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

PT. Perkebunan Nusantara VII Lampung is an industrial company that processes rubber processed materials into the rubber of type SIR 20. The problem that occurs with this type of product is that the PO content does not comply with predetermined quality standards. The purpose of this study is to analyze the causes of product damage using the Failure Mode and Effect Analysis (FMEA) method, to obtain the greatest risk of failure in the production process in the value of the Risk Priority Number (RPN), and to provide recommendations for its improvement. The results of the data collection analysis are described through a Check Sheet Diagram to determine the damage from several rubber data samples of the SIR 20 type, then described the Cause Failure Mode Effect (CFME) to determine the factors that cause damage to PO levels originating from human, material and work environment factors. After that, describes the FMEA analysis to determine the RPN value, where the highest RPN value is the different rubber freezers, loud engine sounds and vibrations, and the operator's lack of accuracy in regulating the temperature of the dryer. The recommended improvement proposal is to receive good quality raw materials and increase the price of raw materials, as well as provide guidance to farmers about good types of rubber freezers, requiring the use of earplugs so that machine noises do not interfere with the operator's work, providing training and warning to operators not to make mistakes, and carry out intensive inspections of operators.

Quality Control Analysis Into Decrease the Level Defects on Coffee Product Heri Wibowo; . Sulastri; Emy Khikmawati
International Conference on Engineering and Technology Development (ICETD) 2013: 2nd ICETD 2013
Publisher : Bandar Lampung University (UBL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (371.567 KB)

Many local companies were that engaged in the manufacturing of coffee beans into semi-finished carelessly ready for export. To maintain the product to fit customer demand, it is very necessary quality control. The problems are the following: (1) The destruction of coffee still within the limits of control or not. (2) Any type of damage that occurs in coffee product were produced. (3) The factors that cause damage to the coffee product. (4) Application of statistical tools in controlling product quality coffee and pressing the occurrence of damage to the product. This study aims to determine how the implementation of quality control using statistical tools useful in efforts to control the level of damage to the product in the company. P control chart analysis results indicate that the process is in a state of uncontrolled or still experiencing irregularities. Based on Pareto diagram, priority repairs that need to be done is for the dominant type of damage that the black seed (25.68%), broken seeds (19.23%), brown seeds (17.60%) and more than a hollow seeds (15.99%). the causal diagram analysis can be seen from the factors that cause damage to human factors/workers, machine production, work methods, materials/raw materials and the work environment, so the company can take precautions and repair the damage.

ANALISIS PERENCANAAN KEBUTUHAN BAHAN BAKU KAYU PADA PRODUK KURSI GOYANG BALI DENGAN PENDEKATAN MINIMASI BIAYA (STUDI KASUS : CV. MEUBLE PUSPA JAYA) Heri Wibowo; Emy Khikmawati; I Wayan Agus Hariyanto
Journal Industrial Servicess Vol 3, No 1a (2017): Oktober 2017
Publisher : Fakultas Teknik Jurusan Teknik Industri Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jiss.v3i1a.2065

CV. Meuble Puspa Jaya adalah perusahaan industri rumah tangga yang bergerak di bidang produksi dan penjualan meubel. Produk CV. Meuble Puspa Jaya adalah kursi goyang bali. Permasalahan yang dialami perusahaan adalah belum optimalnya pengendalian biaya persediaan bahan baku kayu yang mencakup biaya pesan, biaya simpan, dan kapan tersedianya untuk membuat kursi kayu goyang bali. Tujuan yang diharapkan dari penelitian ini adalah menganalisis biaya persediaan bahan baku kayu pada produk kursi goyang bali dengan beberapa metode alternatif teknik lot sizing, yaitu metode Economic Order Quantity (EOQ), Part Period Balancing (PPB), Period Order Quantity (POQ), Least Unit Cost (LUC), dan Minimum Cost per Period (Algoritma Silver Meal). Berdasarkan perhitungan yang dilakukan diperoleh periode yang paling optimal yang digunakan dan dengan biaya persediaan yang paling minimum adalah metode Minimum Cost per Period, yaitu dengan total biaya persediaan bahan baku yang digunakan sebesar Rp 477.000,00.

WELDING TECHNICAL CLINIC ANALYSIS OF WELDING SMAW WELDING IN VEHICLES OF DISTORTION RECESSING Heri Wibowo; Riswan Dwi Jatmiko
Jurnal Penelitian Saintek Vol 15, No 2: Oktober 2010
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Contplicated distortion alu,ays )tappens in metel melting and.freezirtg proL'ess on welding Lip trt now, the common merhod to recluce distnrtion are; base ntetal prehettling, heat irtput minirualization, welding process sequence, etc. the last has been u,setJ l:y tr'r,Uort, hov:ettet' lhe sequence ofbest effectivitlt and elficiency has not been yet studied. This research aims to lnow ffict of welding process sequence b), sttrdied 5 dil/brent v,elding route related to angle distortion (a), bending distortion (0), c'ross distortian (LI .l anci atial distortion (LP). 'tilelding process used sltielded metal arc welding, base metal ofST 37 and electrode of E6013; 2.6 mm and 3.2 mm of diameter. Fou'kinds oJ te,st used ungle gauge oJ 0.lo precision ctnd caliper of 0.05 mm precision.Based on the test, it could be known that the lov:est angle distortion toctk pluc:e on 3 tirues roule that was 3.07", while the highest happened at 5 times route methoci thai v'Lts 9.23". the lov'esl ben.ding distortion took place on I and 3 lintes route thal wctre 1.50 mm anci 1.52, respectit'e1.1:, wh.ile the highest happened at 5 times rrnrte ruethod that wqs 1 70 rnnt. Cross clistortictn ancl ctnglc distortion tended to have lowest distortion at 3 titnes route, v,hile axial distortion and bentling distortion at I and 3 times routes. All that kinds of dislortion had llte lowest valtte ctt 3 times rotfie v'hichwas the best welding route at sheet ntetal ctf 5 nmt thickness.

DESIGN OF WORK EQUIPMENT SYSTEM AND STEAM SYSTEM WITH HYDRAULIC SYSTEM Heri Wibowo
Jurnal Penelitian Saintek Vol 9, No 1: April 2004
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The weight vehicle was used to work the weight job of human such as digging loading and lifting. the materials It was completed bv system work such as attachment svstem and driving system. The both of system must he supported by the engine follow with hydraulicsystem. Design 0/ attachment svst m used cylinder hydraulicmovement for work 01 digging. loading or lifting. and so do cylinder hydraulic was used to turning all bodv of vehicles. The movement and power a/attachment system and driving system was designed to could work a/digging. loading and lifiing. The result calculation of attachment force, the /ifi hvdraulic cylinder is designed with 2cvlinders. each has 15 em cvlinder diameter and I em width 0/cylinder with uses stainless steel (0., = 5100 kg/em']. The dump cylinder is designed with I cvlinder. has /8 CI7I ofcylinder diameter and I em width of cvlinder with lise the same materials. Hydraulic svstem uses the hydraulic pump to central work of attachment system and driving system [hut drive from engine power.

THE UTILIZATION OF GLYCEROL, BIODIESEL SIDE PRODUCT OF USED COOKING OIL AS GLYCEROL ACETATE MATERIAL SYNTHESIS Heri Wibowo
Jurnal Penelitian Saintek Vol 20, No 2: Oktober 2015
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The research aimed at using glycerol of biodiesel synthesis side product from used cooking oil as glycerol acetate material synthesis, and charactering synthesized material based on data of IR spectroscopy and GCMS. The method used to synthesize glycerol acetate was reﬂ ux during 50 minute at 80 C. Glycerol from biodiesel synthesis side product from used cooking oil was puriﬁ ed with acetic anhydride reacted at 80 0 C, for 50 minutes. The synthesis product was characterized by IR and GCMS spectroscopies. The result of this research shows that glycerol derived from synthesizing glycerol 1–monoacetate and glycerol 2-monoacetate in the form of yellow liquid with 145 148 0 0 C boiling point, soluble in ethanol and insoluble in n-hexane. IR spectrum shows the presence of C=O carbonyl, C-O ester, -OH, and C-H aliphatic group; GCMS spectrum shows a mixture from two glycerol monoacetate with SI (Similiar Index) of 97 and 93.

SOLID KARBURISING PROCESS WITH COCONUT SHELL CULTURE MEDIA USED REINSTALLED IN LOW CARBON STEEL PACKING (PACK CARBURIZING PROCESS USING RECYCLING COCONUT SHELL CHARCOAL ON LOW CARBON STEEL HARDENING) Heri Wibowo; Arianto Leman Soemowidagdo
Jurnal Penelitian Saintek Vol 16, No 1: April 2011
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Penelitian ini bertujuan untuk memperbaiki efisiensi proses karburising pada baja karbon rendah melalui pemakaian arang tempurung kelapa secara berulang sebagai karburiser. Arang tempurung kelapa dengan ukuran 30 mesh digunakan untuk lima kali proses karburising secara berulang. Benda uji dari baja karbon rendah diletakkan dalam kotak karburising dari pipa baja diameter 50 mm tebal dinding 2 mm. Tiap proses karburising padat dilakukan dalam dapur pemanas selama 4 jam. Pengaruh pemakaian arang tempurung kelapa secara berulang pada proses karburising padat dianalisis berdasar hasil uji kekerasan permukaan, case depth dan pengamatan struktur mikro. Case depth optimal setebal 300 urn terbentuk pada proses karburising menggunakan serbuk arang tempurung kelapa yang telah dipakai 2 kali proses. Arang tempurung kelapa masih layak digunakan sampai 4 kali proses karburising dengan kekerasan permukaan masih mencapai 642 VHN. Kata kunci: arang tempurung kalapa, karburising padat, baja karbon rendah

ANALISIS PENGENDALIAN KUALITAS KEMASAN GLUKOSA DENGAN PETA KENDALI P DI PT. BUDI STARCH & SWEETENER TBK.LAMPUNG TENGAH Emy Khikmawati; Heri Wibowo; Irwansyah Irwansyah
Jurnal Ilmiah Teknik Industri Vol 7, No 1 (2019): Jurnal Ilmiah Teknik Industri (Jurnal Keilmuan Teknik dan Manajemen Industri )
Publisher : Program Studi Teknik Industri, Fakultas Teknik Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jitiuntar.v7i1.5031

Permasalahan yang dihadapi dalam program kualitas yang baik, yang akan secara efektif mengeliminasi pemborosan dan meningkatkan kemampuan bersaing perusahaan, harus diwujudkan. Untuk itu dilakukan penelitian yang bertujuan menganalisis bagaimana pelaksanaan pengendalian kualitas kemasan glukosa dengan metode SQC (Statistical Quality Control) dan menemukan penyebab terjadinya cacat produk Glukosa dengan kemasan jerigen 20 liter proses sacharification, decolorization, deionization dan evaporation. Metode menggunakan alat bantu statistik berupa check sheet, histogram, peta kendali p, diagram Pareto dan diagram sebeb-akibat.. Hasil analisis peta kendali p menunjukkan bahwa proses berada dalam keadaan tidak terkendali atau masih mengalami penyimpangan. Prioritas perbaikan yang perlu dilakukan untuk menekan jumlah cacat dapat dilakukan pada 2 jenis kerusakan yang dominan yaitu kerusakan kemasan tutup (43,75%) dan volume (40,34%). Faktor-faktor yang mempengaruhi kerusakan produk adalah mesin, metode, lingkungan. Sehingga perusahaan dapat mengambil tindakan pencegahan serta perbaikan kerusakan.

PENJADWALAN PERAWATAN KOMPONEN KRITIS DENGAN PENDEKATAN RELIABILITY CENTERED MAINTENANCE (RCM) PADA PERUSAHAAN KARET Heri Wibowo; Ahmad Sidiq; Ariyanto Ariyanto
Jurnal Ilmiah Teknik Industri Vol 6, No 2 (2018): Jurnal Ilmiah Teknik Industri (Jurnal Keilmuan Teknik dan Manajemen Industri)
Publisher : Program Studi Teknik Industri, Fakultas Teknik Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jitiuntar.v6i2.4106

Perusahaan karet memproses karet remah menjadi karet dengan Standar Indonesia Rubber (SIR). Permasalahan yang sedang dihadapi adalah tingginya waktu kerusakan mesin (downtime) yang mengakibatkan sistem produksi menjadi terganggu. Rata-rata downtime mesin mencapai 2.84% setiap bulannya yang mengakibatkan kerugian bagi perusahaan. Tujuan penelitian ini adalah mengidentifikasi metode perawatan yang selama ini berjalan kurang baik dengan memperhatikan faktor keandalan (reliability) mesin produksi. Oleh sebab itu, pendekatan Reliability Centered Maintenance (RCM) digunakan untuk menganalisis sistem tersebut untuk mengetahui komponen-komponen yang termasuk dalam kategori kritis. Berdasarkan hasil analisis dengan metode RCM maka diperoleh tiga rekomendasi tindakan perawatan yaitu Condition Directed (CD), Time Directed (TD), dan Finding Failure (FF). Hasil perhitungan interval penggantian komponen dengan kriteria total minimum downtime (TMD) menunjukkan bahwa interval pergantian komponen Rantai Bucket Hammer Mill, pisau Screen, pisau Rotor Hammer Mill, Bearing Bucket Hammer Mill adalah 71 hari, 28 hari, 19 hari dan 52 hari.

Co-Authors -, Hidayat . Sulastri Achmad Arifin Agung W. Ahmad Sidiq Ahsanul Fakhr, Ardani Akmala, Vaza Aldho Jaya P. Aldino, Rio Yuri Aldyth Gunanto P. Alghifari, Fajar Alida Roswita Harahap Amanatin, Elsa Lutmilarita Andari, Ni Nyoman Destri Andrian Riyadi Anggono, Rendi F. Anggraini, Meilani Anggraini, Melani Anggraini, Melani Ani Retno Prijanti Ani Retno Prijanti Anna Rozaliyani Antonius H. Pudjiadi Apri Budianto, Apri Ardani, Yanuar Ardhias Mahendra P. Aria Kekalih Ariyanto Ariyanto Arleni Bustami Aryono Hendarto Asysyifa, Nisrina Bambang Heru Budianto Bima Lantip B. Clarinta Putri, Rizky Damayanti, Triya Dante Saksono Harbuwono Desi Yunita Dewi Sukmawati Dian R. Sawitri, Dian R. Dicky Levenus Tahapary Didik Nurhadiyanto Dilawar, Ismail Dinda Zulwi Amalia Tifani E. Mudjaddid A. Siswanto Deddy N.W.Achadiono Hamzah Shatri Edy Purnomo Em Yunir, Em Emy Khikmawati Ernawati Evy Yunihastuti Fadhillah, Muhamad Rizqy Fakhri, Ardani Ahsanul Fattah, Kemas Muhammad Abdul Ferry Sandra Findra Setianingrum Fredy Surahmanto Gantini, Ria Syafitri Evi Gede Wirya Kusuma Duarsa Gusti Khatimah, Nurul Hamdani Nurbahri Hayati, Taureni Hidayat - Hidayat, Entus Hikmat, Ujang Saeful Hutabarat, Hernayati I Wayan Agus Hariyanto Ida Parwati Ilman, M.Noer Indah Setiawati Irfan Wahyudi Iris Rengganis Irwansyah Irwansyah Joedo Prihartono Julian Jusman, Sri Widia Azraki Katarina, Matilda Khatimah, Nurul Gusti Kusmardi Kusmardi Kusmarinah Bramono Kwarta, Cytyta Putri Lesmana, Aditya Candra Liem, Isabella Kurna Liem, Isabella Kurnia Lio, Tiara Mayang Pratiwi Lisnawati Rachmadi M. Rafi Marcellus Simadibrata Marcellus Simadibrata Marcelly Widya Wardana Masyur, Muhtaruddin Mawardi, Prasetya Melani Anggraini Mohamad Sadikin Muhamad Hasan Sebyar Muhammad Fedryansyah, Muhammad Muhammad Noer Ilman Mujiyono Mujiyono Mujiyono Mujiyono Mulyadi M. Djer Murdani Abdullah Murni, Indah K. Najib Advani Neng T. Kartinah Novi H Nugraha, Ardi Maulana Nur Azizah Nur Irawati Nuraeni, Hanny Siti Nurbahri, Hamdani Nuri Dyah Indrasari Nurrahmah, Sheila Nurwati, R. Nunung Parhusip, Santi Sumihar Rumondang Piprim B. Yanuarso, Piprim B. Ponco Birowo Pradipta, Saraswati Primadhani, Suci Widya Primariadewi Rustamadji Priyo Tri Iswanto Putera, Raka Hilmi Syah Putri Damayanti Putri, Rizky Clarinta Rachim, Hadiyanto Abdul Raharja, Putu Angga Risky Rahmat Efendi Rani Wardani Hakim Ratnawati, Mamik Reza Y. Purwoko Ricardo, William Rio Yuri Aldino Ririn Probowati, Ririn Riski Amanda, Clara Riskiyanto, Aldy Risty Yasmin Bonita Riswan Dwi Djatmiko Rona Kartika Rozaliyan, Anna Rubiana Sukardi, Rubiana Sarwono, Sugeng J. Savitri, Monika Septiasari, Yeti setianingrum, suci Sidiq , Ahmad Soleha, Winna Sresta Azahra Suhendro Suhendro Sukamto Koesnoe Sulastri Sulastri Supanto, Muhammad Supriatna, Novianti Supriono , Untung Susanti, Dasmi Susanti, Dhama S. Susatyo, Jeffry Adijaya SUTOPO Suyatna, Fransiscus Dhyanagiri Syari, Lucky Novita Tahapary, Dicky L Tjhin Wiguna Triana, Novi Utomo, Yoga Wahyu Wahyu Gunawan Wahyu, Fransiska Wahyurini, Dyahati Wawaimuli Arozal Widodo Apriliyanto Wijaya, Rheza Paleva Windy Keumala Budianti Wresti Indriatmi B. Makes Yonita, Ariska Yusra Yusra

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