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All Journal agriTECH Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Agroindustrial Journal Teknologi dan Industri Pertanian Indonesia Jakadimas

Guntarti Tatik Mulyati

Departemen Teknologi Industri Pertanian, Fakultas Teknologi Pertanian, Universitas Gadjah Mada, Jl. Flora No. 1, Bulaksumur, Yogyakarta 55281

Author-ID : 401961

Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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Analisis Capacity Constrained Worker dengan Pendekatan Waktu Baku, Denyut Jantung dan Profile Of Mood States (Studi Kasus pada Industri Tempe “Muchlar”Kasihan Bantul) Maman Zuriwiatma; Mirwan Ushada; Guntarti Tatik Mulyati
agriTECH Vol 34, No 3 (2014)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Tempe ”Muchlar” is one the potential food indutry which all the job is pursued manually. The production process is based on the worker capacity. The main problem is the industry could not fulﬁ ll the production target of half-ﬁnished Tempe product of + 3.600 kg. The research objective is to identify Capacity Constrained Worker using standard time, heart rate, proﬁ le of mood states and recommending the improvement to increase the worker capacity. The measurement results were conﬁ rmed using analysis of working environment. The research results indicated that Capacity Constrained Worker of Tempe Industry was the worker of peeling. It was indicated by the standard time of 5,63 detik/kg that could not fulﬁ ll the production target of 3.600 kg in 5 work hours. The improvement was pursued by decreasing the room temperature of working station. The improvement could increase the standard time of 5 second/kg, fulﬁ lling the production target and increasing the income. Finally the improvement using Buffer Management could improve the Capacity Constrained Worker in Tempe Industry “Muchlar”.ABSTRAKTempe ”Muchlar” merupakan salah satu industri pangan yang semua pekerjaannya dilakukan manual sehingga proses produksinya sangat tergantung kapasitas dari pekerja. Permasalahan muncul karena target produksi tempe setengah jadi sebesar + 3.600 kg tidak tercapai. Penelitian ini bertujuan untuk mengidentiﬁkasi Capacity Constrained Worker yang terjadi menggunakan pendekatan waktu baku, denyut jantung, proﬁle of mood states serta menentukan perbaikan yang tepat untuk dapat meningkatkan kapasitasnya. Hasil pengukuran terhadap pekerja dikonﬁ rmasi dengan analisis keadaan lingkungan kerja. Dari hasil penelitian dapat ditentukan bahwa pekerja yang menjadi Capacity Constrained Worker adalah pekerja stasiun pemisahan kulit. Hal ini dibuktikan dari waktu baku yang diperoleh sebesar 5,63 detik/kg yang membuat target produksi sebesar 3.600 kg dalam 5 jam tidak tercapai. Dengan perbaikan yang dilakukan yaitu menurunkan suhu ruangan dari tinggi ke normal waktu baku pekerja dapat meningkat menjadi 5 detik/kg dan target produksi dapat tercapai serta meningkatkan pendapatan. Perbaikan dengan menerapkan buffer management dapat mengurangi stasiun kerja yang menjadi constraint.

Penentuan Tingkat Beban Kerja dan Waktu Istirahat Berdasarkan Kriteria Fisiologis dan Postur Kerja Pekerja (Studi Kasus pada UKM Mi Kricak Yogyakarta) Rizky L.R. Silalahi; Guntarti Tatik Mulyati; A.M. Madyana
agriTECH Vol 31, No 3 (2011)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

One important factor on the industrial production process is worker. Workers’ workload, resting time, and work fatigue need to be considered because they affects the continuity of the company. UKM Mi Kricak is an industry that all work is done manually. This study aims to determine the workers’ workload level and resting time. Physiological criteria measured were heart beat, Circadian rhythm, and sleepiness rate. The pattern movement of heart beat during work was observed, then the energy consumption and rest period required calculated. Workers’ sleepiness level during work observed using the Stanford Sleepinees Scale method. Movement patterns in body temperature observed during work to find workers’ Circadian rhythms and determine the rest hour. Analysis of working postures performed using the Rapid Entire Body Analysis (REBA) to know if there are necessary repairs for work postures. The results showed that the workload level of the fifth worker is low. Rest period calculated of the workers’ is negative, then the fifth workers do not need rest. If necessary, the proposed rest hour based on observed physiological criteria should be given at 18:00. Working posture on some elements of workers’ work also needs to be repaired because of the high risk of causing injury. ABSTRAKSalah satu faktor penting proses produksi suatu industri adalah pekerja. Beban kerja, waktu istirahat, dan kelelahan kerja pekerja perlu diperhatikan karena berpengaruh terhadap kelangsungan perusahaan. UKM Mi Kricak merupakan salah satu industri pangan yang semua pekerjaan dilakukan manual. Penelitian ini bertujuan untuk mengetahui tingkat beban kerja pekerja dan merancang jam istirahat pekerja. Kriteria fisiologis yang diamati adalah denyut jantung, ritme Circadian, dan tingkat mengantuk. Pola pergerakan denyut jantung selama bekerja diamati kemudian dihitung konsumsi energi dan waktu istirahat yang diperlukan. Tingkat mengantuk pekerja selama bekerja diamati menggunakan metode Stanford Sleepinees Scale. Pola pergerakan suhu tubuh selama bekerja diamati untuk mengetahui ritme Circadian pekerja dan menentukan jam istirahat. Analisis postur kerja dilakukan menggunakan metode Rapid Entire Body Analysis (REBA) untuk diketahui apakah perlu dilakukan perbaikan postur kerja. Hasil penelitian menunjukkan bahwa tingkat beban kerja kelima pekerja tergolong rendah. Lama waktu istirahat kelima pekerja bernilai negatif, maka kelima pekerja tidak membutuhkan istirahat. Apabila diperlukan, jam istirahat usulan berdasarkan kriteria fisiologis yang diamati sebaiknya diberikan pada pukul 18:00. Postur kerja pada beberapa elemen kerja pekerja juga perlu diperbaiki karena berisiko tinggi menimbulkan cedera.

Perancangan Tata Letak Vertikal Pembuatan Emping Melinjo Guntarti Tatik Mulyati; Wagiman Wagiman; A.M. Madyana
agriTECH Vol 24, No 2 (2004)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Melinjo crackers small-scale industries are among the industries which still adopt manual and traditional production processes. The research is aimed at improving layouts of a melinjo cracker small scale industry using workers' vertically anthropometrical data. The research was initiated by measuring the workers, productivity and observing the horizontal layouts before the modification. Anthropometrical data were collected by measuring the dimension of woman's body. Such data would be used to design the new layouts by considering then heights of equipment and of the workers 'sitting position. The results show that a better layout arrangement could be achieved. The workers worked by sitting on a chair with the heights of the table and the chair tailored to the worker's anthropometrical data. The position of the equipment was within the workers range of movements, the pealing and the crushing tools were within the normal working area, while the frying and the raw material were on the maximum working area. The workers felt more comfortable when doing their works.

Perancangan Alat Pembentuk Lembaran Mie Basah yang Ergonomis dengan Pendekatan Rekayasa Nilai Diah Kusumawardhani; Guntarti Tatik Mulyati; Wahyu Purwanto
agriTECH Vol 22, No 4 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

To operate machines during the producing wet-noodle sheets processes involve both crews' hands and physical activities. The constructed structures for such machines which are not suitable for the operators's physical anthropometry may ultimately affect the operators' performances. Accordingly, declining in production quantities and qualities are unsurprising. Three stages are involved in designing and construction of such machines based on the above approaches. Namely identifying a set of operators' associated needs (which are gathered through questionaires), secondly is developing the ergonomics machine concept through FAST diagram and the last stage is analyzing the machines' overall expected value and performances. These design stages are performed on the main machine structure, the mixed blend basin, the milled paste container and on the handle grip to rotate the milling device. Studies indicated that machines constructed through these methods produced increamental of performance by 2.56% and value by 3.72 % respectively.

Penerapan Analisis Konjoin untuk Mengukur Preferensi Konsumen Minyak Goreng Marina Herawati; Guntarti Tatik Mulyati; Suharno Suharno
agriTECH Vol 22, No 3 (2002)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Many similar products are offerred by some companies that give consumer's free of choice. Each company has the opprotunity to meet her consumer's need. First of all, company has to understand what product's attributes and the combination of product's attributes. Conjoint analysis can produces the combination which are important in marketing activities. The method of conjoint analysis which is used in this research can produces sttribute combination that is effecting consumer's decision making when they want to buy a product. Result shows the combination of product attributes, such as price, lighteness, colour, flavour and taste, and easiness to acquire, most prefered price of palm oil was under Rp. 5000 per litre, light, yellow to white with weight value of 12.5% and average combination utility value is 2.2632.

Analisa Faktor yang Berpengaruh terhadap Permintaan Tepung Terigu oleh Industri Kecil Berbahan Baku Tepung Terigu di Daerah Istimewa Yogyakarta Saptati Nurul H.; Wahyu Supartono; Guntarti Tatik Mulyati
agriTECH Vol 21, No 2 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This research was conducted to identify all influencing factors of wheat flour demand of industries, which used wheat flour as main raw material. Samples of this research were five noodle industries and ten sweet cake industries in Yogyakarta municipality. Dependent variable influencing to wheat flour demand of small scale industries were price of wheat flour, price of substitutes (rice flour and tapioca starch), industry's income, and governmental regulation for wheat flour distribution. A double regression method was used to determine the roles of each dependent variable. Result of data analysis showed, that the wheat flour demand was influenced by five factors in following equation: ... If the price of wheat flour (Pt) increased at 1%, the demand of it (Qt) decreased at 0.09%. The increase in price of rice flour (Ptb) 1% caused the increase in demand of wheat flour (Qt) for 0.124%; The increase in price of tapioca starch (Ptp) for 1% affected the increase in demand of wheat flour 0.028%; the increase of wheat flour demand of 0.427; also for cake industry increase in its income 1% caused increase in the wheat flour was stopped, the demand of wheat flour decreased. This regulation affected the declination of wheat flour demand in small-scale industry of wheat demand for 0.036.

Perubahan Warna, Tekstur, Densitas dan Komposisi sebagai Parameter Tingkat Ketuaan Buah Mangga Arumanis Atris Suyantohadi; Guntarti Tatik Mulyati
agriTECH Vol 21, No 1 (2001)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

This research was aimed to analysis the change of fruit by physical factors i.e. color change around the fruit branch, fruit texture, fruit density, and by chemical factors i.e, content of total sugar, total acids, starch and pH value. They were continuosly monitored based on the fruits ages criterion from unripe (green fruits) to ripe fruits. The Determination was counted from unripe fruits to ripe fruits stage (from 65 days to 122 days after flowering). Fruits taken from mango plantation in Watugadjah, Gunung Kidul, Yogyakarta, were selected from some of mango trees which had simultaneous flowered. The result showed that the level of fruit color and fruit density increased but fruit texture decreased. Acids contents decreased but total sugar and total starch increased up to fruits ripening at the trees. The characteristics of ripening "arumanis" mango ranged 45-90 for lightness; 88-90 for texture; 5.6-6.5%, 4.0-5.5% for starch and sugar content respectively, and 3.0-3.5 for pH.

Implementasi Konsep Quality Function Deployment (QFD) untuk Meningkatkan Kualitas Produk Usaha Bakery Muhammad Sri Sadono; Guntarti Tatik Mulyati; Wahyu Purwanto
agriTECH Vol 20, No 4 (2000)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Product development and design have in the past often concentrated on specification and performance required. With and abundance of production capacity from other companies, the customer has greatest freedom of choice and will increasingly exercise that freedom. Products that only just satisfy the basic needs of performance and specification, but miss out on additional desirable or 'excitment' features seen elsewhere, will probably cause the intending purchaser to select the competitor's product. Quality Function Deployment (QFD) is a powerful technique, which enables companies to anticipate and prioritize customer needs in their totality and to incorporate them effectively into the product and service provided for the end user. Quality Function Deployment is a process which brings together the lifecycle of a product from its conception. through design, manufacture, distribution, and use, until the product has, the costumer's opinion, served its expected life. The management of QFD ensures that vital consumer satisfaction and excitement attributes are recognized and developed, so that the company can achieve a competitive edge. It is equally, if not more, important that this is achieved profitability, thereby providing increased security of the business and for its emlpoyees. According to the result of research at bread customer, pronounced 9 primary customer requirements its separated at 26 secondary customer requirements. That customer requirements must be answer by company with 26 technical requirements has implementation step priority stage, which can give guidance to the companies management of QFD team for implementing the Total QUality Management concept.

Analisis Ergonomika Penggunaan Mini Rice Combine Harvester Rachmat Suyisto; Bambang Purwantana; Guntarti Tatik Mulyati
agriTECH Vol 41, No 2 (2021)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Mini rice combine harvester adalah mesin pemanen padi yang saat ini banyak dioperasikan di lahan sawah. Penelitian ini bertujuan untuk mengetahui ergonomika mesin mini rice combine harvester dalam pemanenan padi di lahan sawah berukuran sempit. Pengujian ergonomika dilakukan berdasarkan karakteristik mekanis mesin dan karakteristik fisiologi operator. Karakteristik mesin diukur dari getaran mesin, polusi suara serta polusi debu yang dihasilkan. Karakteristik fisiologi operator diukur dari beban kerja yang digambarkan dengan perubahan denyut jantung kerja, suhu tubuh, kesakitan pada anggota tubuh yang dirasakan operator. Hasil penelitian menunjukkan bahwa harvester yang diuji mempunyai getaran mesin sebesar 14,2 m/dt2, kebisingan 92,4 dB, melebihi ambang batas kesehatan yaitu sebesar 6 m/dt2 dan 80 dB. Disarankan operasional mesin dilakukan secara bergantian operator dengan periode untuk setiap operator tidak lebih dari 1 jam. Debu yang dihasilkan menurut ISO 14644-1 termasuk kelas 6 atau bersih dan tidak membahayakan operator. Beban kerja berdasarkan pengukuran denyut jantung operator adalah sangat ringan - sedang. Hasil analisis kesakitan akibat kerja menunjukkan 14% anggotatubuh terasa sedikit sakit dan 3,3% anggota tubuh sangat sakit. Secara umum disimpulkan bahwa untuk dapat memenuhi kelayakan dari aspek ergonomi perlu dilakukan upaya perbaikan disain untuk menurunkan getaran dan kebisingan mesin.

Design Conformity of Indonesian-Made Mini Rice Combine Harvester and Anthropometry of Javanese Farmers Guntarti Tatik Mulyati; Muhammad Maksum; Bambang Purwantana; Makhmudun Ainuri
agriTECH Vol 40, No 2 (2020)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

The combine harvester in Yogyakarta Province Special Region has a small size because it is used to harvest rice in a narrow area. The purpose of this study is to determine which parts of the mini combine harvester machine are not ergonomic and need to be improved so that the operator can work comfortably and safely. The types of mini combine harvester machines investigated in this study are QUICK H140R, TANIKAYA Ironbee HT12, and JAP001. Results showed that, for the three combine harvester machines, there was a mismatch in the physical size of the engine and the anthropometry of the operator. The main problems of the mini combine harvester machine are less ergonomic seat, inappropriate placement of the control table, hand activity in the maximum area, narrow workspace for leg movements, and less supportive footstep for the operator to work while standing. This information is expected to be utilized by Indonesian mini combine harvester machine designers so that the new design of combine harvester machines will be ergonomic, safe, and comfortable.

Co-Authors A.M. Madyana A.M. Madyana Adi Djoko Guritno, Adi Djoko Adisty Savitri An Naafi Yuliati Lathifah Atris Suyantohadi Bambang Purwantana Bambang Purwantana Bambang Purwantana Diah Kusumawardhani Didik Purwadi Dyah Ismoyowati, Dyah Falah, Muhammad Affan Fajar Faqih, Ahmad Saifulloh Faradisyi, Zahra Firstama Saka Adiatmaja Ibnu Wahid Fakhrudin Aziz Kuncoro Harto Widodo Makhmudun Ainuri Maman Zuriwiatma Marina Herawati Mirwan Ushada Muhammad Maksum Muhammad Maksum Muhammad Sri Sadono Nafis Khuriyati Nugrahini, Arita Dewi Pradita, Sintia Putri Rachmat Suyisto Rizky L.R. Silalahi Rosa Amalia Saptati Nurul H. Saroyo, Pujo Suharno Suharno Wagiman Wagiman Wagiman, Wagiman Wahyu Purwanto Wahyu Supartono

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