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Measurement analysis of the level of household preparedness for facing landslide in Bogor regency

IOP Conference Series: Earth and Environmental Science 2021年第1期708卷

作者： P D Saputra C Rahmawati K S H Purnomo E Larosa Nurhasanah Military Building Construction Engineering Study Program Faculty of Military Engineering Indonesia Defense University Bogor Indonesia Industrial Engineering Department Faculty of Industrial Technology Universitas Dirgantara Marsekal Suryadarma Jakarta Indonesia Master of Management Program Universitas Teknologi YogyakartaYogyakarta Indonesia Mechanical Engineering Education Faculty of Teacher Training and Education Universitas Negeri Yogyakarta Yogyakarta Indonesia Civil Engineering Study Program School of Engineering & Technology Tanri Abeng University Jakarta Indonesia

There are so many areas in Indonesia that are prone to landslides. Bogor is the regency with the most frequent landslides. Therefore, high community preparedness is needed to deal with the landslide, especially at the household level because it is the spearhead of preparedness and influence disaster risk. The objective of this research is to measure and analyze the level of household preparedness for facing landslide. The location of this research is in Cibadak Village, Bogor regency where a landslide disaster had happened. This is a quantitative research. The number of the samples were 100 household. Data collection was done by surveying samples and distributing questionnaires. The data would be analyzed with descriptive analysis, and the results of level of household preparedness would be categorized to five levels which were very prepared (80-100), prepared (65-79), almost prepared (55-64), less prepared (40-54), and not prepared (0-39). The results of the research are the average index value of Knowledge and Attitude (KA) parameter is 66.77, Emergency Planning (EP) parameter is 52.24, Warning System (WS) parameter is 64.80, Resources Mobilization Capacity (RMC) parameter is 51.25 and the level of household preparedness for facing landslide is 59.26 or and it is significant at the almost prepared level.

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Failure Analyses on Corrosion of Hot Water Tank Storage Made from Stainless Steel

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IOP Conference Series: Materials Science and engineering 2020年第1期1007卷

作者： Tjokorda Gde Tirta Nindhia I Putu Widya Semara I Wayan Bandem Adnyana I Wayan Surata I Gusti Komang Dwijana Study Program of Mechanical engineering Engineering faculty Udayana University Jimbaran Bali Indonesia 80361 Graduate student Study Program of Master in Mechanical Engineering EngineeringFaculty Udayana University Bali Indonesia 80361

Hot water storage tank that was made from stainless still was investigated in this case. The tank was found failure in service due to corrosion in welded section. Corrosion also was found at the bottom part of the storage tank. The tank was used for no longer than one year but unfortunately severe corrosion was found. The purpose of this research is to find the reason why the tank easily corroded especially at the bottom part and at the welding section. The research was carried out by conducting metallographic examination directly in situ by utilizing portable metallographic microscope. 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 the tank was different with the wall, and upper section. The welding filler also was found not correctly prepared that make pitting corrosion to occur. It is suggested to conduct advance research to investigate the correct composition for the filler during welding.

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Structural health monitoring: Frequency domain analysis of beam with breathing crack

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IOP Conference Series: Earth and Environmental Science 2021年第1期729卷

作者： F E Gunawan Y Kanto I Kamil Sutikno H N Tran Industrial Engineering Department BINUS Graduate Program - Master of Industrial Engineering Bina Nusantara University Jakarta Indonesia 11480 Mechanical Systems Engineering College of Engineering Ibaraki University Ibaraki Japan Department of Industrial Engineering Department Faculty of Engineering Andalas University Padang Indonesia Department of Mechanical Engineering Department Faculty of Engineering Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Automotive Engineering Faculty of Transportation Engineering Ho Chi Minh City University of Technology Ho Chi Minh City Viet Nam

Structural Health Monitoring (SHM) system can be considered as an Internet-of-Things (IoT) system implemented to engineering structure to provide real-time information on the integrity of the structure. In doing so, the system acquires data from various sensors distributed across the structure and infers damage sensitive quantities. In the research, we proposed a damage index derived from the governing dynamics of the structure in the frequency domain. The proposal was empirically verified by applying the index to analyze the case of a cracked cantilever beam subjected to a harmonic load. The value of the damage index was computed at some points surrounding the crack to understand the effect of the distance of the monitoring point to the crack to the index sensitivity. The results suggest that the index is sensitive to the crack particularly when the observation point is near the crack.

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Improvement of the ungrounded force display using grooved cam 17

Improvement of the ungrounded force display using grooved ca...

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17th IEEE International Conference on Industrial Informatics, INDIN 2019

作者： Kakuda, Emi Yokota, Sho Matsumoto, Akihiro Chugo, Daisuke Hashimoto, Hiroshi Toro University Graduate School of Science and Eng Kawagoe Japan Toyo University Dept. of Mechanical Engineering Kawagoe Japan Kwansei Gakuin University School of Science and Technology Hyogo Japan Advanced Institute of Industrial Technology Master Program of Innovation for Design and Eng. Tokyo Japan

ISBN: (纸本)9781728129273

This paper proposes the ungrounded force display using the grooved cam. Using the human illusion, the user can feel the force in the one direction when they use proposed device. It is mainly configured the cam and the slider. The slider follows the cam and moves translational movement. In this paper, we create the new prototype which solving the problems that emerged from the previous prototype. We evaluate the device using the two experiments. One is the subjective evaluation. Second one is the force presentation from the new prototype as the quantitative evaluation. We could solve problems of previous prototype by changing the cam type from plate to groove and blushless motor, and the new one produce the force more clearly than the previous prototype. © 2019 IEEE.

关键词： Navigation systems

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Manufacture of polymeric foam and polyurethane composites with fiberglass boosters 1

Manufacture of polymeric foam and polyurethane composites wi...

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1st SEMIRATA-International Conference on Science and Technology, SEMIRATA-ICST 2018

作者： Mawardi Syam, B. Wirjosentono, B. Dharma, D.S. Mechanical Engineering Master Program Universitas Sumatera Utara Indonesia Department of Mechanical Engineering Universitas Sumatera Utara Indonesia Department of Mathematics and Natural Sciences Universitas Sumatera Utara Indonesia

The purpose of this research is to know the mechanical characteristics of polymeric foam and polyurethane with fiberglass reinforcement. The focus of the observations on the average maximum compressive force, mean maximum stress and elastic modulus where the observed characteristics are obtained from static press test. Furthermore, tensile testing is performed to observe the mechanical characteristic of mean maximum force, mean maximum stress and elastic modulus. The polymer as a matrix is use 157 BQTN-EX with thermoset resin with fiberglass reinforcement. Tensile test specimens were made according to ASTM D638 standard and ASTM 1621-00 standard for static press test. Three variation of composition is A, B and C where fiberglass used 10%, catalyst 5%, resin 55% and polyurethane 30%. The test result showed that the test specimen on composition C value of characteristic compressive force average 22.838 kN, the mean maximum compressive stress average 19.128 MPa and average modulus of elasticity is 161.447 MPa. While on tensile test the variation of material composition with the same fiber was obtained on compositional test specimen C value of the mean gravity characteristics of the average maximum of 1.214 kN, the mean maximum tensile stress is 20.243 MPa and average modulus of elasticity is 803.634 MPa. © Published under licence by IOP Publishing Ltd.

关键词： Elastic moduli

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Angle control of antagonistic pneumatic driven and inflatable arm joint 17

Angle control of antagonistic pneumatic driven and inflatabl...

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17th IEEE International Conference on Industrial Informatics, INDIN 2019

作者： Ogasawara, Hirofusa Yokota, Sho Matsumoto, Akihiro Chugo, Daisuke Hashimoto, Hiroshi Toyo University Graduate School of Science and Eng. Kawagoe Japan Toyo University Dept. of Mechanical Engineering Kawagoe Japan Kwansei Gakuin University School of Science and Technology Hyogo Japan Advanced Institute of Industrial Technology Master Program of Innovation for Design and Eng. Tokyo Japan

ISBN: (纸本)9781728129273

The conventional robot arms applied in various fields are demanded to have high force output, high accuracy, high efficiency. But they are seldom applied in human life, because of large weight, rigidity, hazards to people caused by collisions. Therefore the soft robotic arm that is stretchable, light weight, softness without possible of hazards, and high precision control is suitable to deploy in human life. Thus the purpose of this research is to develop the soft robotic arm by using antagonistic pneumatic driven system. In order to realize this concept, the joint activation mechanism is the key component. This study focuses on the angle control of the joint. In this paper, the robot arm made by polyethylene is proposed. Air bags made of polyethylene inside the joint achieve antagonistic driven states. Helical tube made of polyethylene is adhered joint outside for realizing rigidity. It is characterized that control rigidity is realized by controlling the pressure in the helical tube and joint angle is preciously controlled in two degree of freedom by controlling pressure in the air bags. Furthermore, the joint angle can be controlled by controlling the air pressures in the air bags using stretch sensor measuring joint angle. The experimental result confirmed that the driving concept of the joint was well functioned, and the joint angle control was realized by feedback control. © 2019 IEEE.

关键词： Robotic arms

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Static simulation to horse shoes alternative materials based basic polymeric foam reinforced fiberglass with ANSYS software 1

Static simulation to horse shoes alternative materials based...

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1st SEMIRATA-International Conference on Science and Technology, SEMIRATA-ICST 2018

作者： Siregar, R.E.K. Syam, B. Wirjosentono, B. Muttaqin, M. Master Program in Mechanical Engineering Universitas Sumatera Utara Indonesia Faculty of Engineering Universitas Sumatera Utara Indonesia Faculty of Mathematics and Natural Sciences Universitas Sumatera Utara Indonesia Department of Mechanical Engineering Faculty of Engineering Universitas Sumatera Utara Indonesia

In this journal, we used Finite Element Method (FEM) calculations based on ANSYS software. The software will involves the value of the material properties. Then, will used to simulate the manufacture of horse shoe, when the horse stood silent, for fiberglass reinforced polymer materials and compared with the usual materials for horse shoe, the Mild Carbon Steel (A36) so that will be obtained which is the best between the two materials. In this simulation work, the horse shoe receives a load of 500 kg. From this simulation we will obtain Equivalent Stress, Normal Stress on each axis (X, Y, Z) from the loading direction experienced by horse shoes. Equivalent equivalence values of 0.21509 MPa polymeric foam while Mild Carbon Steel (A36) 0.1034 MPa and normal polymeric foam voltage values for X-axis 0.016426, Y -0.007111 and Z 0.0695, while Normal Stress from Mild Carbon Steel (A36) for X axes 0.02233, Y 0.0204 and Z 0.047. The simulation results provide an understanding of the normal force resistance of polymeric foam materials for Mild Carbon Steel (A36) materials, whereas for polymeric foam materials the equivalent stress is superior to Mild Carbon Steel (A36) © Published under licence by IOP Publishing Ltd.

关键词： Reinforcement

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Kinetic analysis of co-combustion of microalgae spirulina platensis and synthetic waste through the fitting model

Kinetic analysis of co-combustion of microalgae spirulina pl...

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2018 International mechanical and Industrial engineering Conference, IMIEC 2018

作者： Sukarni, Sukarni Prasetiyo, Ardianto Sumarli, Sumarli Nauri, Imam Muda Permanasari, Avita Ayu Center for Renewable and Sustainable Energy Engineering Department of Mechanical Engineering State University of Malang Malang65145 Indonesia Master Program of Mechanical Engineering Graduate School State University of Malang Malang East Java65145 Indonesia

Thermogravimetric analyzer had been occupied to investigate the behavior of co-combustion between microalgae Spirulina platensis and synthetic waste. The powder of microalgae and synthetic waste were mixed in the same ratio of 50/50. Around 10 mg of the sample was heated up in the chamber under air atmosphere flowrate of 100 ml/min at a heating rate of 10 °C/min. The results showed that the sample blend is undergoing thermal degradation in the three stages. The most massive reaction occurred in the second stage in which around 74% of the mass degraded and combusted. The activation energy in the main combustion reaction zone according to the method of Horowitz-Metzger was 57.77 kJ/mol. © The Authors, published by EDP Sciences, 2018.

关键词： Microalgae

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Mapping Upstream and Downstream Process in The Patchouli Oil Industry Using Supply Chain Operations Reference Model Version 12.0 (SCOR 12.0)

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IOP Conference Series: Materials Science and engineering 2020年第1期931卷

作者： Hazful Maizi Hasan Yudie Sastra Arhami Industrial Engineering Master Program Department of Mechanical Engineering and Industry Universitas Syiah Kuala Banda Aceh Indonesia Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia

Supply chain characteristics in the agricultural industry differ from the industry in general, the structure is more complex and unique according to its agricultural commodities. All of the aspects starting from the upstream are very important to consider because of their dependence on the suitability of the environment and the processes that are carried out on the pre-source. Patchouli oil industry which is mainly located in Aceh Jaya Regency is the object of this study due to the fact it is the largest supplier of patchouli oil in Aceh Province. It is estimated that patchouli oil which is one of the superior local wisdom product is becoming an interesting subject again. This is indicated by several local products that use it as the main raw material. Certainly, this will be difficult to be applied if the supply chain from the upstream to the downstream is not evaluated and upgraded. For this reason, it is necessary to do a mapping process on the vulnerable side, including pre-source, source, make, and deliver. This mapping used the SCOR method version 12.0 and adapted to the make-to-stock industry scheme. The output of this study is a reliable and measurable process system in the patchouli oil industry.

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The development of the model of influence of sociodemographic characteristics and disaster experience toward household preparedness for facing landslide in Bogor regency

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IOP Conference Series: Earth and Environmental Science 2021年第1期708卷

作者： P D Saputra C Rahmawati P Karuniakhalida K S H Purnomo E Larosa Military Building Construction Engineering Study Program Faculty of Military Engineering Indonesia Defense University Bogor Indonesia Industrial Engineering Department Faculty of Industrial Technology Universitas Dirgantara Marsekal Suryadarma Jakarta Indonesia Mathematic for Education Program Faculty of Teacher Training and Education Universitas Riau Riau Indonesia Master of Management Program Universitas Teknologi Yogyakarta Yogyakarta Indonesia Mechanical Engineering Education Faculty of Teacher Training and Education Universitas Negeri Yogyakarta Yogyakarta Indonesia

Indonesia has a high tendency of having landslides. Bogor is one of regency which is very prone to landslide disaster due to high rainfall. Landslides are a very dangerous threat to public safety. The preparedness can build disaster resilient communities that can support the national resilience. Sociodemographic characteristic and disaster experience are determining factors for the success of preparedness. The purpose of this research is to develop a model of the influence of sociodemographic characteristics and disaster experience toward household preparedness for facing landslide. This research is done in Cibadak Village, Sukamakmur Bogor. This research uses a quantitative approach with 100 sample of households. Multiple linear regression technique is used for analyzing the model. The results of the research showed that household preparedness is significantly influenced by sociodemographic characteristics which is education (p = 0.000), meanwhile age, income and the number of family member don't significantly influence. Beside that the household preparedness is also greatly influenced by disaster experience too (p = 0.000). Education influence on household preparedness for facing landslide as much as 38.81% and the disaster experience is 52.85%.

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