Indonesia Conference Directory

Corresponding Author
Rafiuddin Syam

Institutions
a)Mechanical Engineering Dept., Hasanuddin University
*rafiuddinsyam[at]gmail.com
b)National Nuclear Energy Agency of Indonesia
c)Electrical Engineering Dept., Hasanuddin University

Abstract
The research discusses about designing and examining underwater robot on a difficult-reach area. The instruction of underwater technology development takes an important role to support offshore industry facilities like reactors facilities. ROV also can be used to observe hi-risk area such as contaminated chemical area, hydrothermal exploration, also needs of safety forces company to change diver function with ROV. Here, the small underwater robot is used to detect leaks in reactors facilities. ROV which designed with ATMega microcontroller based equipped with 4 motors that able to control ROV motion on six degree of freedom (Surge, heave, up, yaw, roll, dan pitch). From the test result using 12 V 2200 mAh battery, motor attain speed up to 1811,36 rad/s. With maximum impetus 16,8 N and 0,19 Nm moment. From the robot-s observation concluded manual system control using remote Flysky 2,4 GHz, robot can move according to command and able to assist underwater observation activities.

Keywords
ROV, Underwater Robot, Control, Thruster, ATmega

Topic
Technology

Link: https://ifory.id/abstract/JeRvGaQhkpPE

Corresponding Author
Abdul Rachman Rasyid

Institutions
a) Faculty of Engineering, Hasanuddin University
Kampus Fakultas Teknik Jalan Poros Malino Km 6 Gowa Indonesia
b) Faculty of Marine Science and Fisheries, Hasanuddin University
Jalan Perintis Kemerdekaan Km 10 Tamalanrea, Makassar Indonesia
c) Ehime University, Matsuyama, Japan

Abstract
In a study of landslide vulnerability, awareness to find a fit method and simple procedures of analysis became an obsession for the researchers. Moreover, the best result of the predictive landslide is a requirement when most of the landslide data validation lay on the high class in susceptibility map. Validation compares predictive values with real data set to determine the degree of confidence of the model. This research presents an overview of the utilization of inventory maps of landslides from 2004 to 2016 using google earth such mapped landslide distributions, can then be used to perform landslide zonation onto the landslide susceptibility map to the use of satellite imagery with on-screen digitization. By using GIS and combined statistical analysis, landslide data image inventory was digitized by means of historical imagery then landslide susceptibility map was created. Landslide occurrences and their location were found and interpreted based on the period of landslide occurred. The validation shows the promising result, both by using AUC of ROC curve and the ratio of landslide that falls on high to very high class of susceptibility

Keywords
GIS;Google eartth;landslide susceptibility;statistical mode;validation

Topic
Technology

Link: https://ifory.id/abstract/QNmar2LPJT6R

Corresponding Author
Reiner Tampi

Institutions
Doctoral Program of Civil Engineering Department of Hasanuddin University

Abstract
This research study discusses the modulus of elasticity of concrete using abaca fibers. The addition of abaca fiber to concrete mix is ​​done with the composition of abaca fiber 0% (normal concrete), 0.15%, 0.20%, 0.25% with a fiber length of 50 mm. Concrete cylindrical specimens (100 mm x 200 mm) with each variation of 3 cylinders with a total of 12 specimens tested after the specimens reached 28 days in a Universal Testing Machine (UTM) and evaluated through the ASTM standard in testing concrete compressive strength. Concrete compressive strength test results with variations in length of 50 mm with a fiber volume of 0.15% produces an elastic modulus of 23057.14 MPa. For a volume of 0.20% the modulus of elasticity is 19575.44 MPa. Then for the fiber volume of 0.25% the modulus of elasticity is 17104.90. Normal concrete modulus value 20058 Mpa. From these results it can be concluded that the more fiber volume, the smaller the modulus of elasticity. The modulus of elasticity of abaca fiber concrete with a fiber length of 50 mm and a fiber volume of 0.15% is the best and gives an increase of 14.96% to normal concrete.

Keywords
abaca fiber concrete, modulus of elasticity

Topic
Technology

Link: https://ifory.id/abstract/p2TDE8nN6A7M

Corresponding Author
Musran Munizu

Institutions
Faculty of Economics and Business, Hasanuddin University
Perintis Kemerdekaan Street, KM.10, Tamalanrea, Makassar - Indonesia 90245

Abstract
Information technology is one of important organizational resources that affected service performance either in private sector or public sectors. The purpose of this study was to identify and analyze important factors that influenced variable of smart city implementation as well as public service quality. This study was conducted both in South Sulawesi Province, especially Makassar City and Parepare City. Target population are residents or users of public services in education, health, and population administration in the past one month. The number of samples were 284 people. Method of analyses used includes descriptive statistical analysis, and confirmatory factor analysis. Data is processed by using software of AMOS 24. The results showed that factors of smart governance and smart society were important factors that influenced variable of smart city implementation. Then, procedure and service time were important factors that influenced variable of public services quality in South Sulawesi.

Keywords
Smart city, Public service quality, Information technology, Indonesia

Topic
Technology

Link: https://ifory.id/abstract/MdatTZRN83Kv

Corresponding Author
Rita Irmawaty

Institutions
a) Department of Civil Engineering, Faculty of Engineering, Universitas Hasanuddin, Universiti
Jl. Poros Malino KM 06 Bontomarannu, Gowa 92171, Indonesia
Rita_irmaway[at]yahoo.co.id; parungherman[at]yahoo.co.id
b) Faculty of Civil and Environmental engineering, Universiti Tun Hussein Onn Malaysia
86400 Parit Raja, Batu Pahat, Malaysia
nurazuwa[at]uthm.edu.my

Abstract
Waste tire is one of the largest waste contributors. Due to the abundant amount of waste tires that would require the proper way to utilize waste tires as an aggregate replacement in concrete. Crumb rubber is a fiber-shaped material, which is produced from shred or scrap of post-used tires from trucks. Tire Chips is a material which consists of small pieces of waste rubber tires. This study explores the ameliorative effects of rubber particles on some properties of concrete. The objectives of this work is to present the mechanical properties of concrete (compressive strength, modulus of elasticity and split tensile strength) with variations of crumb rubber + tire chips 0%, 10%, 20% and 30% on fine and coarse aggregate volumes. Two types of rubber particles (crumb rubber and tire chips) have been used in the rubberized concrete mixtures replacing partially natural aggregates. Cylinder-shaped test object with 100 mm in diameter and 200 mm in length. Compressive strength testing was conducted at 3, 14 and 28 days. While the modulus of elasticity and split tensile strength were tested at 28 days. The results showed that the weight of the concrete volume decreased by 3.5% in each addition of 10% crumb rubber + tire chips. Compressive strength and split tensile strength decreased with increasing the number of crumb rubber + tire chips in concrete. The decrease in compressive strength was 24% on the addition of up to 10% crumb rubber + tire chips, while the split tensile strength decreased by 16%. Adding more than 10% of crumb rubber + tire chips to fine and coarse aggregate volumes is not recommended.

Keywords
crumb rubber, tire chips, mechanical properties

Topic
Technology

Link: https://ifory.id/abstract/GAeCF3nQ7mJ6

Corresponding Author
Ulva Ria Irfan

Institutions
¹Department of Geological Engineering, Faculty of Engineering, Hasanuddin University, Gowa 92119, Indonesia
E-mail: ulvairfan[at]yahoo.com; E-mail: hendrapachri[at]gmail.com

²Department of Mining Engineering, Faculty of Engineering, Bosowa University, Makassar 90231, Indonesia
E-mail: andhis1971[at]yahoo.com

³Geology Engineering Magister Study Program, Department of Geological Engineering, Postgraduate Faculty of Engineering, Hasanuddin University, Gowa 92119, Indonesia
E-mail: hasri_asho82[at]yahoo.com

Abstract
Exploration of mineral resources requires support from geophysical methods to describe the subsurface conditions of an area identified as containing potential minerals. Inaccuracies in the application of methods in geophysics can result in losses caused by the calculation of reserves from deposit models that are less precise. This research aims to optimize the performance of iron ore exploration methods that integrate the geoelectrical with the geomagnetic method. The study was conducted in the Ogololo Sub-District, Sojol District, Donggala Regency, Central Sulawesi. In this area, exploration has been carried out the geoelectrical method which results in overlapping values between the host rock granodiorite with iron ore respectively 685.7 - 7671.1Ωm and 170 - 1146Ωm. Simulation of the geoelectrical method with two-line and geomagnetic by making a test pit to optimize the interpretation of the results of the two methods. Simulation results obtained the resistivity value of gabbro (2790.1- 13098.2Ωm), granite (685.7 - 7671.1Ωm), diorite (374.2 Ωm. - 5291.8Ωm), hematite (745.4 - 140303.9Ωm) and magnetite (170 - 5807.2Ωm). Positive and negative double anomaly patterns were obtained from geomagnetic simulation results. Validation of the simulation results was carried out on a five-line measurement and analysis of iron ore levels using the X-ray fluorescence (XRF) method. The measurement results obtained by one line that contained iron ore with a resistivity of 600 - 8938.7Ωm and geomagnetic result show multiple anomalies patterns ranging from -650nT to +1700nT, and iron ore content of 61.09 - 97.12%.

Keywords
Optimization; Iron Ore; Geomagnetic; Geoelectrical; Anomaly Pattern

Topic
Technology

Link: https://ifory.id/abstract/MXxczFC9h2qa

Corresponding Author
Muthia Elma

Institutions
1 Chemical Engineering Department, Faculty of Engineering, Lambung Mangkurat University, Banjarbaru, 70714, Indonesia
2 Materials and Membranes Research Group (M2ReG), Lambung Mangkurat University, Jl. A. Yani KM 36, Banjarbaru, South Kalimantan 70714, Indonesia

Abstract
Pervaporation process is currently applied for brine water desalination. This high water salt content may impacts to the environmental if it is not treated well. This paper demonstrates the performance of organo-silica membrane to produce potable water treated from brine water. Organo-silica membrane was employed by applying sol gel process for 3 hours using tetra orthosilicate (TEOS) as main precursor as well as dual catalyzed (organo catalyst/citric acid) and base (ammonia) on reflux temperature of 0 ℃. The molar ratios were 1:38:0.0007:5:003 for TEOS:EtOH:Citric Acid:H2O:NH3. The citric acid was chosen as carbon source to increase the carbon chains in the silica matrices. It was found that the water flux was increased as the feed temperature also increased from 40℃. Organo-silica membrane was tested in various artificial brine water (7.5-15 wt% NaCl) operated at 40 and 60 ℃ as feed temperatures with the water flux from 1.27 to 1.55 kg.m2.h-1with excellent salt rejection of >90%.

Keywords
TEOS, organo-silica membranes , water flux, salt rejection, brine water pervaporatiom

Topic
Technology

Link: https://ifory.id/abstract/zqMpXfWceJPL

Corresponding Author
Paulina Taba

Institutions
Hasanuddin University

Abstract
Wastewater resulted from textile dyeing is an enormous pollutant around the world. Therefore, the existence of dyes, such as brilliant scarlet (BS), in the water environment have to be removed. Mesoporous silica (MCM-48) was used to remove BS through adsorption process. MCM-48 was hydrothermally prepaired using co-surfactant of CTAB and Triton X-100 as a template. After being synthesized, the material was washed once and twice with HCl-ethanol to remove surfactants used. Fourier Transform Infra Red (FT-IR) and X-ray Diffraction (XRD) were methods utilized to characterize MCM-48 materials. We studied the ability of washed MCM-48 materials (washed once, MCM-48-W1 and washed twice, MCM-48-W2) to remove BS from aqueous media with a variation of contact time, pH and concentration. A UV-Vis Spectrophotometer was an instrument used for measuring the concentration of BS after adsorption at a wavelength of 505 nm. The adsorption isotherms of BS by washed MCM-48 materials were studied using Langmuir and Freundlich models. It was found that the optimum time adsorption of BS by MCM-48-W1 and MCM-48-W2 was 60 min. The optimum pH adsorption of the dye by MCM-48-W1 was 6, whereas those by MCM-48-W2 was 5. The adsorption of BS by MCM-48-W1 and MCM-48-W2 obeyed the Langmuir and Freundlich models. The adsorption capacity of the former was higher than that of the later. This result showed that mesoporous materials that still had some surfactants are promising to be used as adsorbent of dye.

Keywords
adsorption, mesoporous silica (MCM-48), adsorption isotherm, brilliant scarlet

Topic
Technology

Link: https://ifory.id/abstract/kuNM964HGFZW

Corresponding Author
Nini Hasriyani Aswad

Institutions
1. UNHAS
2. UHO

Abstract
Shear strength analysis of the reduced beam section (RBS) on the castellated beam with exterior connection aimed to analyze the structural elements to determine the shear force acting due to cyclic loading. The study was developed from the theory of moments due to shear forces based on the American Institute of Steels Prequalified Connection Construction for Special and Intermediate Moment Frames for Seismic Applications (AISC 358-10). This study used an experiment of RBS on a castellated beam with an exterior connection model subjected to cyclic loading. The result shows that the shear strength occurred after the bending failure of the beam.

Keywords
Shear strength,RBS,shear force

Topic
Technology

Link: https://ifory.id/abstract/2Qc8e3hU6mLj

Corresponding Author
Carter Kandou

Institutions
Doctoral Program of Civil Engineering Department of Hasanuddin University

Abstract
The purpose of this study is to determine the value of shear forces for coupling beam using annealed wire fiber. It also discusses the relationship of force-strain in annealed wire fiber of RC coupling beam. The design and construction of the coupling beams remain challenging due to the presence of large reversed-cyclic nonlinear rotation demands combined with large shear forces. Annealed wire fiber used in research with diameter (D) 0.8 mm with fiber length (L) 48 mm (L/D ratio is 60) with fiber composition 0.75% of volume. Two coupling beam test specimens measuring 20 cm x 40 cm with a length of 115 cm with a ratio of Ln / h is 2.875 with the details of 1 beam coupling without fiber (CB-1) and 1 beam coupling with fiber (CBF-1). It can be seen in the variation of normal concrete CB-1 results of an experimental analysis of 113.32 kN and in the fiber concrete CBF-1 can be seen that the experimental shear strength of 163.37 kN then it can be seen the shear strength of the CBF-1 experimental analysis is 44.16% greater than the shear strength experimental CB-1.

Keywords
Shear strength, annealed wire fiber, coupling beam, cyclic loads

Topic
Technology

Link: https://ifory.id/abstract/aPEutNL7cTJR

Corresponding Author
Rita Irmawaty

Institutions
Department of Civil Engineering, Faculty of Engineering, Universitas Hasanuddin

Abstract
Glass Fiber Reinforced Polymer (GFRP) is a composite material that is lightweight, easy to apply, low-cost installation and maintenance, thus becoming material selection for retrofitting reinforced concrete (RC) structure. This study aims to analyze the shear capacity of reinforced concrete beams after initial cracked, which is retrofit with GFRP sheets in the pedestal shear area. Six RC beams with dimensions of 15 cm x 35 cm x 300 cm were tested with a monotonic load, consisting of 2 normal beam (BN), 2 RC beams retrofitting with GFRP strips (BGS) and 2 RC beams strengthened in all the shear zones with GFRP (BGF). The results showed that an increase in ultimate load on the beams retrofit with GFRP, ie 3.13% of BGS and 6.25% in the BGF. Retrofitting with GFRP sheet on RC beam shear area is strongly influenced by the extent of GFRP sheets used (Afv). The change in the area of GFRP from BGS with Afv = 780 mm to BGF with Afv = 1105 mm, is able to increase the beam shear capacity by 10.63%. From the calculation, the beam shear capacity increased by 58% in BGS and 74.5% in BGF beams.

Keywords
GFRP, retrofit, RC beam

Topic
Technology

Link: https://ifory.id/abstract/68dDWuXzxfvH

Corresponding Author
Rafiuddin Syam

Institutions
a) Mechanical Engineering Dept., Hasanuddin University, Makassar, Indonesia
*rafiuddinsyam[at]gmail.com
b) Mechanical Engineering Dept., Universitas Muslim Indonesia, Makassar, Indonesia

Abstract
The purpose of this study is to do the simple maneuvers for robot manipulators as small firefighters. Design and experiments were carried out in the manipulator robot as a firefighter. The results obtained by simple maneuvers for the mini firefighting robot succeed with the optimum trajectory. The direct control method was carried out in this study by using Arduino Mega as an interface system. The conclusion of this study is that the robot can perform maneuvering through the path using the line follower robot method.

Keywords
Small Robot Firefighting, Arduino Uno, Control System, Robot Manipulator

Topic
Technology

Link: https://ifory.id/abstract/x9Dj7PWRGgYB

Corresponding Author
Abdul Azis

Institutions
(1)MAGISTER STUDENT HASANUDDIN UNIVERSITY
(2)DOCTORAL STUDENT HASANUDDIN UNIVERSITY
(3) LECTURER DEPT. CIVIL ENGINEERING HASANUDDIN UNIVERSITY
(4) LECTURER DEPT. CIVIL ENGINEERING, HASANUDDIN UNIVERSITY

Abstract
In the construction of transportation network, road infrastructure is being developed intensively . Quality assurance is needed to prevent failure and ensure the length of performance. for measuring the quality of roadworks, especially asphalt, we can now use the laboratory version of Light weight deflectometer (LWD), which was developed by bina marga. Light weight deflectometer (LWD); has been developed for evaluation of surface stiffness that can be used to estimate the degree of compaction and determine modulus of elasticity. This research is based on laboratory testing that purpose to analyze the effect of asphalt density (AC-WC) towards deflection value and modulus of elasticity by using the laboratory version of LWD and then find the correlation between the elastic modulus of asphalt to variety in the height of mashing load.

Keywords
LWD, modulus elasticity, AC-WC

Topic
Technology

Link: https://ifory.id/abstract/tTXH4k9pGmBh

Corresponding Author
Sandra Wulan

Institutions
Environment Management Hasanuddin University, Perintis kemerdekaan KM 10 Makassar - Indonesia
(sandra.haerdy[at]gmail.com)

Abstract
Biodegradable foam (biofoam) is an enviromentally friendly alternative packaging for styrofoam. This study aims at synthesizing biofoam from filter cake waste, obtain its characteristics and determining the economic feasibility of developing the produced biofoam product. The study was conducted with descriptive experimental methods and economic feasibility studied through the circulation of NPV and PI. The result indicate that the biofoam with addition of 15% w/w glycerol plasticizer has the best characteristics which contained the lowest value of moisture content (6,321%) and water absorption index (17,181%) and also has tensile strength (6,7778 N/mm2) and elongation (174,5%) higher than styrofoam packaging. All biofoam samples can be degraded completely within 25-30 days. Addition of plasticizer generally affects the characteristics of biofoam. Based on the analysis of the economic feasibility studies, the development of filter cake based biofoam products is feasible ( positive NPV; PI>1).

Keywords
filter cake, biodegradable foam, plasticizer, glycerol, waste.

Topic
Technology

Link: https://ifory.id/abstract/j8dtJcEgWTKx