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57 Documents
<![CDATA[Network Performance Optimization Using Odd and Even Dual Interleaving Routing Algorithm for Oil and Gas Piepline Network ]]>
<![CDATA[M. Y. Lee]]>;
<![CDATA[A. S. Azman]]>;
<![CDATA[Siva Kumar Subramaniam]]>;
<![CDATA[F. S. Feroz]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.13
<![CDATA[The oil and gas industry is one of the world’s largest conglomerates, involving the production of complicated and critical methods for refining. This indicates the high necessity for a secure and reliable system, such as the Wireless Sensor Network (WSN), which provides auspicious and flexible solutions for the industry. It is one of the most excellent and trendy solutions to the crisis existing within the oil and gas industry, especially in the midstream pipeline. In this application, the nodes were arranged in a linear architecture, to cover a long distance of the pipe. The factors causing the degradation of the overall network performance with increasing density were also identified, due to the increment of the load causing clogging and inhabiting the packet queue. This subsequently led to packet loss, throughput unfairness, higher power consumption, and passive nodes’ presence in the network. The proposed routing protocol (AODVEO) was also reactive based on the AODV reducing the instabilities by splitting the traffic into even and odd paths. Additionally, the performances of AODV and DSDV were used to benchmark the efficacy of the proposed routing protocol.]]>
<![CDATA[Proposed Design Of Toy To Optimize The Brain Development Of Children Aged 3-5 Years Old ]]>
<![CDATA[Rahmaniyah Dwi Astuti]]>;
<![CDATA[William Elian Gandana]]>;
<![CDATA[Eko Pujiyanto]]>;
<![CDATA[Rahma Sabilah Nurbi]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.14
<![CDATA[Children and games are inseparable, especially during their childhood which is known as the golden age. This is the phase when they experience a very fast and significant brain growth and development under the influence of several factors such as the sensory, motor, and cognitive aspects. Therefore, this study aims to design a safe toy without hazardous materials to maximize the brain development of children aged 3 to 5 years in the sensory, motor, and cognitive aspects. The design was based on the Nigel Cross principle normally used to analyze the consumer needs and this led to the production of three different toys which include the hand puppet, board game, and puzzle. The toys’ specifications and features were obtained from questionnaires distributed online and data analysis. The materials used include velboa fabric for hand puppets while Polylactic Acid (PLA) was used for both the board game and puzzles and they were selected based on the evaluations conducted by 3 competent production stakeholders. In conclusion, it was discovered that the design was able to provide solutions and breakthroughs needed to maximize the brains of children in their golden age.]]>
<![CDATA[Design of Working Table for Fret Wiring Operators With Nida Method in Guitar Industry Mancasan Sukoharjo ]]>
<![CDATA[Rahmaniyah Dwi Astuti]]>;
<![CDATA[Fathin Kusumo Pramesti Pudjiantoro]]>;
<![CDATA[Bambang Suhardi]]>;
<![CDATA[Irwan Iftadi]]>;
<![CDATA[Annisa Syahiliantina]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.15
<![CDATA[The guitar industry is in Mancasan, Sukoharjo regency is a small medium enterprises which carried out finishing process to produce acoustic guitars. All of the process are done manually without any machine. There is one process called fret wire installation where the operator is in a static work posture for an extended period of time to hold the work piece. Nordic Body Map (NBM) assessment showed that almost all assessed workers have pain in hip and right upper arm. There is indication of Musculoskeletal Disorders (MSDS) risk in left upper arm, back, and waist of workers who conduct fret wires installation process. This indication is confirmed using REBA. REBA Score for fret wiring operator is 10, it indicates that the investigation and modification was needed as soon as possible. This arises to a problem called workers MSDS due to awkward posture. This research aims to design an ergonomic working table to reduce the risk of musculoskeletal disorder for fret wire installation operators. REBA was used to evaluate working posture to find the specific problem. In addition, NIDA product development process and anthropometry concept were also implemented to develop working table based on the problem previously found. The result is the proposed working table which specifications are has adjustable system on the leg of the table, features a lock to hold the guitar head, a support with a pad for the neck and body of the guitar, a work tool area and a half-coil fret wire arrangement, and a curved table base so that the operator is in a comfortable position and is close to the work piece.]]>
<![CDATA[Application of The DMAIC Method in Improving The Quality of Electric Power Steering Housing Products ]]>
<![CDATA[Hery Hamdi Azwir]]>;
<![CDATA[Zaenal Fanani]]>;
<![CDATA[Hirawati Oemar]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.16
<![CDATA[PT. ABC is a manufacturing company that produces Electric Power Steering (EPS) Housing components. For the past three months, there have been problems with the EPS production process. The problem is related to the finding of defective products which on average reached 3.9% of the total production, and has exceeded the maximum limit allowed by the company, which is 2%. This study aims to overcome these problems by making improvements using the DMAIC method in the hope of finding the root cause of the emergence of defects and making improvements to reduce the number of defects that occur. The improvement results have shown that the number of defects reduced from 3086 pcs to 1948 pcs per 22 working days or decreased by 0.54% with an increase in sigma level from 3.95 to 4.01 sigma. In this case, DMAIC implementation is effectively reduced defects by 1.5% based on the sigma level. To achieve a 6-sigma level equivalent to a world-class industry, companies must make continuous improvements by fixing other root causes.]]>
<![CDATA[Determination of Distribution Routes Using the Saving Matrix Method to Minimize Shipping Costs at PT. SUKUN TRANSPORT LOGISTICS ]]>
<![CDATA[Dian Erliana Febriyanti]]>;
<![CDATA[Rangga Primadasa]]>;
<![CDATA[Sugoro Bhakti Sutono]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.18
<![CDATA[PT. Sukun Transport Logistics is a company engaged in shipping,logistics and also transportation vehicle rental services. Theproblems faced by PT. Sukun Transport Logistics is a lack oftransport vehicle capacity, causing the use of transport vehiclesthat are not suitable and the distribution of sub-routes is notbalanced. Therefore, to overcome these problems, it is necessaryto determine the optimal distribution route using the saving matrixmethod. The saving matrix method is a method to shortenmileage, estimate distribution time and minimize shipping costs atPT. Sukun Transport Logistics. From the results of the routeresearch in this study, it is known that the route proposal with thesaving matrix method opens 2 sub routes from the previous 3 subroutes, the total distance through the saving matrix method andthe closest calculation method is 299 km. While the total distanceof the actual route delivery to the company is 313 km. Thedistance saving of this research with the company's actual routeis 14 km or 4.47%. At the time of saving of 164 minutes or20.97%, and distribution cost savings of Rp. 141,658 or 25.53%.]]>
<![CDATA[Re-Engineering The Business Process of Slickline and Electric Line Operation ]]>
<![CDATA[Rendi Harun Putra]]>;
<![CDATA[Winda Nur Cahyo]]>;
<![CDATA[Tieling Zhang]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.22
<![CDATA[A strategy to save cost related to oil exploration process is discussed in this paper. The focus is to reduce the cost in slickline and electric line operation in order to maintain the business continuity, where this conclusion was obtained by looking at the comparison between the costs incurred during previous operations with the costs incurred at this time by comparing the results of operations obtained as well as comparisons with oil and gas prices both before and after 2018. This concrete step to be taken is a method for lean management because there is a cost suppression in it. The context of its implementation is through Business Process Re-engineering which of course will implement appropriate method steps to be taken. The method steps taken are to implement Value Stream Mapping which in its preparation includes an analysis of the slickline and electric line operation work steps carried out, including by compiling; Product family or operation work steps, Current state map of both operations and Design future state map of Wire Line operation proposal and 5S theory process as completeness. The proposed strategy enable to reduce costs by combining slickline and electric line operations in one unit or one service company, then reducing the number of workers involved and making work more efficient, by reducing the Rig up and Rig process, Down PCE (Pressure Control Equipment), reducing the repetition of the work intervention process.]]>
<![CDATA[Investigating The Effect of Nickel Buttering on Corrosion Resistance ]]>
<![CDATA[Santanu Das]]>;
<![CDATA[Manas Kumar Saha]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 2 (2022): Spektrum Industri - October 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i2.23
<![CDATA[Cladding is usually employed for improving corrosion and/or abrasion resistance of a component. Buttering layer between clad layer and structural steel is also sometimes provided to promote bonding between the cladding and the substrate. The buttering layer may also give desired corrosion resistance. Nickel is known to be a common austenite stabilizer, and it is often put inside cladding, coating, buttering, etc. to enhance hardness and corrosion protection of steel. In the current investigation, 316 austenitic stainless steel is deposited over nickel plated medium carbon steel substrate with the help of metal active gas welding. Nickel is accumulated on medium carbon steel by electroplating to act as a buttering layer. Welding current and torch travel speed, two important process parameters are varied with constant arc voltage to develop different values of heat input. Accelerated corrosion test in chloride atmosphere is done on ground and polished clad surface. Corrosion rate is observed to be decreased significantly for all the clad samples relative to the base material. However, no clear trend of corrosion rate against increment in heat input is found for reporting, but corrosion rate shows a typical pattern with the variation of heat input.]]>
<![CDATA[Aggregate Planning Implementation for Planning and Controlling The Materials in The Beverage Packaging Industry ]]>
<![CDATA[Indra Setiawan]]>;
<![CDATA[Nurdiansyah Nurdiansyah]]>;
<![CDATA[Muh. Tosin]]>;
<![CDATA[Vivi Lusia]]>;
<![CDATA[Muhammad Wahid]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.25
<![CDATA[The Beverage Packaging Industry is a company that produce ready-to-drink drinks that produces Box Bottle Tea (BBT) 250 slim products. This product is sent to several customers and distributors throughout Indonesia. During 2020 the demand for this product has increased. In addition, the increasing demand also fluctuated significantly so the company was unable to predict production schedule. The continuity of the production process to meet consumer demand requires good production planning. The purpose of this research is to plan and control the production process of BBT 250 slim to obtain optimal raw material requirements. This study uses the method of Linear Regression and Aggregate Planning. Based on the analysis with Linear Regression, this study resulted in a model Y=319.575+3.723X, meaning that if demand decreases, the amount of production also decreases. This model is very useful for the Beverage Packaging Industry in planning and controlling raw materials for production. Calculation of raw material requirements for BBT 250 slim products results in an efficiency of raw materials than usual forecasting.]]>
<![CDATA[Ergonomic Design of Hand Sanitizer Dispenser Stand With Foot Pedal Model ]]>
<![CDATA[Akh Sokhibi]]>;
<![CDATA[Mia Ajeng Alifiana]]>;
<![CDATA[Vikha Indira Asri]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.27
<![CDATA[The COVID-19 pandemic that occurred in early 2020 until now is a new phenomenon in human life. Various sectors of life have been affected by the COVID-19 pandemic. To prevent the spread of the COVID-19 pandemic, the Government has made every effort, including appealing to avoid crowds, maintain distance, wear masks, limit mobility and diligently wash hands with water or hand sanitizer. Especially for the use of hand sanitizers placed in public places, tools are needed to place hand sanitizers that by the range of dimensions of the human body. So it is necessary to design a hand sanitizer stand by considering ergonomic aspects. Methods that have been used in this research was experimental with an ergonomic approach. The object of research is the design of a hand sanitizer dispenser stands with a foot pedal model by incorporating ergonomic aspects. The data collection procedure used is anthropometric data from the Javanese community. Then the anthropometric data were tested for normality, uniformity test, and data test. The design dimensions were obtained from percentile calculations based on anthropometric data. The results showed that the height of the bottle hand sanitizer stands was 91.73 cm; the hand sanitizer stand pedal width 13.67 cm; for the hand sanitizer stand, the pedal length is 24.32 cm.]]>
<![CDATA[Mental Workload Evaluation for PMM Outbound Student in X University (Unix) Using NASA-TLX Method ]]>
<![CDATA[Wildanul Isnaini]]>;
<![CDATA[Halwa Annisa Khoiri]]>;
<![CDATA[Putri Cahyaningtyas]]>
<![CDATA[ Spektrum Industri Vol. 20 No. 1 (2022): Spektrum Industri - April 2022 ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/si.v20i1.28
<![CDATA[Program Mahasiswa Merdeka (PMM) is one of the MBKM program. This program allows student to study in different university and majors. It was attended by students of Engineering Faculty from UNIX in State and Private University throughout Indonesia. By participating PMM, the student have overload credits because they have to finish double credit from homebased and destination university. This condition affects the burden on students both physically and mentally. This mental burden of students has an impact on student achievement academically, so the mental burden analysis is needed. In this study, an evaluation of the mental workload was carried out using the NASA-TLX approach. The result found that in general 75% of students experienced a very high workload. The percentage of students who take PMM in State University as much as 50% is in the category of high mental workload and 50% is very high category. The percentage of students who take PMM in Private University is 25% in the very high category and 75% is in the high category. From this study, UNIX can have some consideration about providing the brief (tips and tricks) before PMM for student mental preparation and choosing the Private University for destination university.]]>
