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All Journal Majalah Forum Teknik UGM Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) Jurnal Momentum Jurnal Teknosains Rekayasa Mesin Jurnal Ilmiah Teknik Industri Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal E-Komtek Indonesian Journal of Electrical Engineering and Computer Science Journal of Mechanical Design and Testing (JMDT)
H Herianto
Departemen Teknik Mesin Dan Industri, Fakultas Teknik, Universitas Gadjah Mada. Jl. Grafika No. 2, Kompleks UGM, Yogyakarta 55281, Indonesia
Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Public Health

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Pemilihan Fitur untuk Monitoring dan Klasifikasi Kondisi Pahat S Syaiful; H Herianto
Forum Teknik Vol 37, No 1 (2016)
Publisher : Faculty of Engineering, Universitas Gadjah Mada

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Abstract

Studi Antropometri Mahasiswa Indonesia Bersuku Batak Dan Jawa Ismianti Ismianti; Herianto Herianto; Ardiyanto Ardiyanto
Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) Vol 5 No 2 (2019): Volume 5 No 2 Desember 2019
Publisher : Program Studi Magister Ergonomi Fisiologi Kerja Pascasarjana Universitas Udayana Denpasar Bekerjasama dengan Perhimpunan Ergonomi Indonesia (PEI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEI.2019.v05.i02.p01

Abstract

Perbedaan suku bangsa merupakan salah satu faktor yang berpengaruh terhadap variasi antropometri. Walaupun Indonesia terdiri dari berbagai suku bangsa, penelitian antropometri yang membahas hal tersebut masih sangat terbatas. Penelitian ini dilakukan untuk mengumpulkan data antropometri mahasiswa Indonesia, sekaligus membandingkan dimensi antropometri antara mahasiswa Indonesia bersuku Batak dan Jawa. Pengukuran 58 dimensi antropometri dilakukan pada 286 mahasiswa laki-laki dan 210 mahasiswa perempuan. Hasil pengukuran disajikan dalam statistik deskriptif dalam rerata, simpang baku, dan nilai persentil. Selain itu, perbandingan antropometri antar jenis kelamin dan suku dilakukan dengan uji t dan uji Mann-Whitney. Hasil perbandingan pada peserta perempuan dan laki-laki untuk masing-masing suku menunjukkan perbedaan yang signifikan hampir di seluruh dimensi, di mana peserta laki-laki cenderung memiliki dimensi yang lebih besar daripada perempuan (p<0,05). Perbandingan antropometri antar suku pada peserta laki-laki menunjukkan bahwa terdapat perbedaan signifikan pada 13 dimensi dengan kecenderungan laki-laki bersuku Jawa memiliki dimensi kaki yang lebih besar, sedangkan peserta laki-laki bersuku Batak memiliki dimensi lebar seperti lebar mulut dan lebar kaki yang lebih besar. Pada peserta perempuan, terdapat perbedaan yang signifikan pada 27 dimensi di mana terdapat kecenderungan peserta bersuku Batak memiliki dimensi posisi duduk menghadap belakang yang lebih besar, sedangkan peserta bersuku Jawa cenderung memiliki dimensi tangan yang lebih besar
PENGARUH VARIASI MATRAS KARET TERHADAP KERATAAN PERMUKAAN PELAT PADA ALAT CEKAM VACUUM CLAMPING Karnova Yanel; Herianto Herianto; R. Rachmat A Sriwijaya
Jurnal Momentum ISSN 1693-752X Vol 19, No 2 (2017): Volume 19 No. 2 Agustus 2017
Publisher : ITP Press

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Abstract

Sebuah mesin milling digunakan dalam proses permesinan untuk pekerjaan pemakanan permukaan, sisi, dan pemotongan material dengan profil tertentu (Rochim, 1993). Alat bantu cekam vacuum clamp yang dipilih dapat digunakan  untuk memotong profil yang berbeda-beda. Agar benda kerja tercekam dengan sempurna maka permukaan alat cekam dilapisi dengan matras karet sebagai perapat.Tujuan dari penelitian ini untuk melihat pengaruh matras karet terhadap kerataan permukaan pelat yang dicekam menggunakan vacuum clamping. Spesifikasi vacuum clamping yang digunakan adalah 280 mm x 180 mm x 35 mm (p x l x t) dengan area cekam 200 mm x 150 mm (p x l), lubang diameter 3 mm, jarak antar lubang 5 mm yang berfungsi sebagai tempat benda kerja dicekam (dengan alas matras karet). Pompa vacuum menggunakan spesifikasi rotary vane vacuum pump, daya 1/3 hp atau 0,25 kW. Alas matras karet menggunakan matras karet yang banyak dijumpai di pasaran dengan ketebalan 1,7 mm dan 3,5 mm.Tekanan hisap yang digunakan -24 InchHg(Yanel, 2016). Proses pengukuran menggunakan dial indicator yang dipasangkan pada alat ukur ketinggian pada meja kerataan.Dari penelitian yang dilakukan dapat dilihat bahwa perbedaan ketinggian permukaan pelat yang dicekam menggunakan vacuum clamping untuk matras karet 3,5 mm adalah 0,9 mm sedangkan untuk matras karet 1,7 mm adalah 0,56 mm.Keyword: Vacuum Clamping, Active Clamping, Milling Fixture.
ANALISIS DAN PROFIL TINGKAT KEBUGARAN MAHASISWA JURUSAN TEKNIK MESIN DAN INDUSTRI UNIVERSITAS GADJAH MADA YOGYAKARTA Herianto dan Chusla Rosdiana Dewi
Jurnal Teknosains Vol 2, No 1 (2012): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.5982

Abstract

Aerobic fitness can be used as a health indicator. The purpose of this study is to investigate the effect of Body Mass Index,gender, and physical activity on the aerobic fitness. Twenty females and 27 males students in range of 20 ± 1.2 yearsold, height 164 ± 8.95 cm, and weight 58.23 ± 9.5 kg that meet inclusion criteria were used as subject that measuredin Ergonomics Laboratory Gadjah Mada University within room temperature 25-26oC and 40-50% in humidity.Four methods of indirect measurement (VO2max as an output) is used to measure aerobic fitness: nonexercise skinfoldmeasurements and Body Mass Index, Astrand bicycle, treadmill, and the fitness index Harvard Step Test performed ondifferent days. The results showed that gender (rs = 0.838 on the nonexercise BMI) and BMI (rs = -0.677 on the Astrandmethod) effect on aerobic fitness. The average value of VO2max (ml.kg-1.min in-1) is achieved from each method. Formale, Astrand bicycle = 53.24 ± 7.82, treadmill = 38.43 ± 9, 05, BMI = 44.85 ± 3.45, 42.49 ± 3.38 = skinfold. Forwomen, Astrand bicycle = 47.86 ± 8.59, ± 5.73 treadmill = 34.1, BMI = 34.25 ± 2.46, 34.63 ± 2.51 = skinfold.
Analisis Pengaruh Bentuk Telapak Kaki Terhadap Kelelahan Fisik Herianto Herianto
Jurnal Teknosains Vol 2, No 2 (2013): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.6004

Abstract

Physical activity over time can cause fatigue during exercise such as walking or light running. Physical fatigue effects on heart rate and blood pressure. Factors that can cause fatigue are gender, cardiovascular disease status, sport exercise habits, BMI (Body Mass Index) and study activities during a week. Physical fatigue also could be caused by factors shape of your foot, especially the form of flat feet/pesplanus in type 1, 2or 3. Subjects of this research were students of Industrial Engineering Gadjah Mada University ages 19 to 23 years with the aim of sampling techniques to the criteria of having normal or flat feet. The subjects run normally using a tread mill with a speed of 4 miles per hour for 6 minutes. The variables measured were heart rate and blood pressure. Heart rate was measured in three sessions among others before, during and after the experiment using a heart rate monitor while blood pressure was measured before and after the experiment. There are significant differences in systolic blood pressure before and after the experimental on indicator of sex, heart rate after experimental on indicator of disease status and heart rate on indicator exercise habit for normal feet. Then in the form of pesplanus foot type 1, there are significant differences like systolic and diastolic blood pressure after experimental on indicator of BMI (Body Mass Index) and systolic blood pressure on indicator of pre-experimental study activities during a week, in which a significant difference in respondents who did not have study activities of the respondents who went tocollegein6-10 hours. In the form of pesplanus foot type 2 there is a significant difference in heart rate when experimental on indicator of cardiovascular disease status.
Analisis Kebutuhan Robot Rehabilitasi Pasien Pasca Stroke dengan Menggunakan Metode Kano Hasan Mastrisiswadi; Herianto Herianto
Jurnal Ilmiah Teknik Industri Vol. 15, No. 2, Desember 2016
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v15i2.2331

Abstract

Product developments of post stroke rehabilitation robot have being done either by local universities or by foreign ones. In this development processes, customer needs were identified prior to the use of QFD method, assuming that improved performance of customer needs linearly affects satisfaction level. This assumption frequently does not fit real condition in the market, wherein customer satisfaction on certain needs dramatically increases by an improvement on their performance and, on the other hand, improved performance on other needs does not affect customer satisfaction at all. In this research, we conclude that almost all of attributes under study belong to one-dimentional categories. Exceptions are associated with portable attribute that belong to must-be categoris and moveable attribute that belong to attractive categories. Moreover, price attribute will affect consumer satisfaction the most given it is fullfilled and control attribute will influence customer dissatisfaction the most if it is not fullfilled.
Contouring Performance Study of a Fuzzy-based Practical Controller on an X-Y Table Purtojo .; Heru S. B. Rochardjo; Gesang Nugroho; Herianto .
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 1: EECSI 2014
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (877.308 KB) | DOI: 10.11591/eecsi.v1.347

Abstract

This article presents a contouring performance of an improved practical fuzzy-based nominal characteristic trajectory following (NCTF) controller. The proposed fuzzy-based NCTF controller structure for continuous motion control is slightly different from the normal NCTF controller. It is composed of a nominal characteristic trajectory (NCT) and a fuzzy compensator designed using the practical design approach. Therefore, simple and easy of controller design are maintained. The NCT constructed through establishing procedure and the Mamdani type fuzzy compensator is designed according to the available information provided by NCT and the hardware specification. The contouring performance was evaluated by measuring the response of the system providing circle shape through simulation. The simulation result shows that the controller is promising as a practical controller for continuous motion.
Analisa Ketelitian Gerak Sumbu X Ekstruder Mesin Fused Deposition Modeling dan Kualitas Hasil 3D Printing Menggunakan Bahan Polylactic Acid (PLA) Ahmad Taufiqur Rohman; Heru Santoso Budi Rochardjo; H Herianto
Journal of Mechanical Design and Testing Vol 2, No 1 (2020): Articles
Publisher : Departemen Teknik Mesin dan Industri, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (488.714 KB) | DOI: 10.22146/jmdt.53597

Abstract

Fused Deposition Modeling (FDM) merupakan teknologi additive layer manufacturing (ALM) yang bekerja dengan cara ekstrusi material. Material yang digunakan adalah polylactid acid (PLA). Tantangan penggunaan teknologi FDM antara lain kualitas dimensi benda hasil uji printing. Oleh karena itu dilakukan penelitian yang bertujuan untuk mengetahui besar akurasi gerak ekstruder mesin FDM dan ketelitian dimensi benda hasil uji printing pada mesin FDM. Pengaruh optimasi kontrol pada mesin FDM akan dilihat pengaruhnya terhadap akurasi gerak mesin FDM dan ketelitian benda uji.Penelitian dilakukan pada sumbu gerak ekstruder mesin FDM. Metode penelitian dengan cara pengukuran akurasi under no load pada mesin FDM dan divalidasi menggunakan pengukuran ketelitian dimensi hasil uji printing. Pengukuran under no load menggunakan laser interferometer sedangkan pengukuran dimensi benda uji printing menggunakan mesin CMM. Parameter kecepatan dan proses printing ditetapkan pada nilai tertentu. Optimasi kontrol dilakukan dengan penambahan step/unit motor 80,1 dan 80,2.Perbedaan hasil pengukuran under no load  dan pengukuran ketelitian dimensi pada hasil printing banyak dipengaruhi oleh faktor shrinkage material. Kompensasi kontrol dapat meningkatkan ketelitian dimensi sebesar 0,145 mm. Mesin FDM yang diteliti dapat menghasilkan ketelitian dimensi produk sebesar 0,157 mm dengan nilai ketidakpastian dibawah + 0.050 mm.
A Tiered Approach On Dimensional Reduction Process for Prediction of Coronary Heart Disease Wiharto Wiharto; Herianto Herianto; Hari Kusnanto
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 2: August 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i2.pp487-495

Abstract

The use of dimensional reduction in the diagnostic system model of coronary heart disease, many same of case do not take into account the clinical procedures commonly used by clinicians in diagnosis. This requires that the examination be done thoroughly, thus making the high cost of diagnosis. This study aims to develop a tiered approach model in reducing dimensions for predicting CHD. The method in this research is divided into several stages, namely preprocessing, building the knowledge base and system testing. Preprocessing consists of several processes, namely the removal of missing value data, grouping attributes, and dividing data for training and testing. Knowledge base modeling is divided into three levels. The first level were the risk factor attributes, the second level were the type of chest pain & ECG, and the third were scintigraphy & coronary angiography. The knowledge base was modeled based on fuzzy rules and its inferencing process using Mamdani method. The first, fuzzy rule-based was obtained by using the FRS study. The second and third stage, using the induction rule algorithm to get the rule, then converted to fuzzy rule. The tested algorithm were C4.5, CART, and FDT. The system testing was performed by the 5-folds cross-validation method, with performance parameters based on population and individual. The test resulted using the Cleveland and Hungarian datasets, the FRS+CART combination was capable of reducing the most attributes and the highest likelihood ratio performance parameter, which was 15.96. FRS+C4.5, at least the attributes were reduced, but has an AUC performance of 80.43%, while FRS+FDT, more reduced attributes than FRS+C4.5, and AUC performance parameters are better than FRS+CART. Dimensional reduction model for prediction of CHD, capable of providing better performance than not tiered.
Improvement of Fuzzy Based Practical Controller for Continuous Motion Control Purtojo Purtojo; Heru S. B. Rochardjo; Gesang Nugroho; Herianto Herianto
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 1: January 2015
Publisher : Institute of Advanced Engineering and Science

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Abstract

This article presents a development of a fuzzy based nominal characteristic trajectory following (NCTF) controller for continuous motion control. A new structure is proposed in order to achieve excellent performance of tracking to a continuous reference input and also for point-to-point positioning task. The proposed structure maintains the NCTF controller simple configuration which is composed of a nominal characteristic trajectory (NCT) and a compensator. The compensator is based on a Mamdani type fuzzy controller. Its membership functions are designed according to the available information provided by NCT and the hardware specification. Controller performance was evaluated through simulation by comparing it with the existing method previously proposed for the fuzzy based NCTF controller. The tracking performance was evaluated by measuring responses of the system providing continuous sinusoidal signal input. The result indicates that substantial improvement is achieved in tracking of continuous reference inputs. Moreover, a better result is also obtained in performing point-to-point positioning task.DOI: http://dx.doi.org/10.11591/telkomnika.v13i1.7008
Co-Authors Ahmad Taufiqur Rohman Ardiyanto Ardiyanto Gesang Nugroho Gesang Nugroho Giovan Ganandy Hari Kusnanto Hasan Mastrisiswadi Heru S. B. Rochardjo Heru S. B. Rochardjo Heru Santoso Budi Rochardjo Ikhwan Taufik Ismianti Ismianti Karnova Yanel Muhammad Kusumawan Herliansyah Purtojo Purtojo R. Rachmat A Sriwijaya S Syaiful Wiharto Wiharto