Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068543
M. A. Wibisono, Alvin Mustafa, Iskandar, Hendrawan, T. Juhana, A. Munir
This paper presents the development of an automatic pointing system for very small aperture terminal (VSAT) antenna. The system which uses AVR microcontroller as a main controller unit (MCU) is featured with non-horizontal alignment autocorrect. User interface is implemented using android smartphone connected wirelessly to the MCU using bluetooth module. The android smartphone also reads the latitude and longitude position of the VSAT antenna location using global positioning system (GPS) module for calculating the required azimuth and elevation pointing angle to the satellite. In case of non-horizontal aligned VSAT antenna, the calculation of azimuth and elevation angles for alignment autocorrect is provided through additional compass and accelerometer modules. The mechanical system uses elevation-over-azimuth configuration with offset-fed for VSAT antenna parabolic reflector with the diameter of 0.74m. The system has been tested to point towards the Palapa-D satellite located at 113°E. The pointing time takes less than 3 minutes, while the average speed of azimuth and elevation rotations is 6.3° per second with the load of 30kg. The differences of pointing angle obtained from the calculation are 2.7” and 17.3” for azimuth and elevation angles, respectively.
{"title":"Automatic VSAT antenna pointing system featured with non-horizontal alignment autocorrect","authors":"M. A. Wibisono, Alvin Mustafa, Iskandar, Hendrawan, T. Juhana, A. Munir","doi":"10.1109/INAES.2017.8068543","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068543","url":null,"abstract":"This paper presents the development of an automatic pointing system for very small aperture terminal (VSAT) antenna. The system which uses AVR microcontroller as a main controller unit (MCU) is featured with non-horizontal alignment autocorrect. User interface is implemented using android smartphone connected wirelessly to the MCU using bluetooth module. The android smartphone also reads the latitude and longitude position of the VSAT antenna location using global positioning system (GPS) module for calculating the required azimuth and elevation pointing angle to the satellite. In case of non-horizontal aligned VSAT antenna, the calculation of azimuth and elevation angles for alignment autocorrect is provided through additional compass and accelerometer modules. The mechanical system uses elevation-over-azimuth configuration with offset-fed for VSAT antenna parabolic reflector with the diameter of 0.74m. The system has been tested to point towards the Palapa-D satellite located at 113°E. The pointing time takes less than 3 minutes, while the average speed of azimuth and elevation rotations is 6.3° per second with the load of 30kg. The differences of pointing angle obtained from the calculation are 2.7” and 17.3” for azimuth and elevation angles, respectively.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116452336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068570
A. A. Kusuma, P. Pramana, B. S. Munir
This paper discuss about the investigation of 150kV capacitor voltage transformer (CVT) breakdown which is occurred simultaneously after capacitor bank disconnecting process. Analysis is performed referring to the last routine maintenance and digital fault recorder (DFR) data. Based on the analysis of both data and transient simulation analysis from the model created to represent the condition during the breakdown, it can be stated that the breakdown of 150kV CVT is due to aging of dielectric material in the CVT. Dielectric material aging of this CVT lead to the reduction of insulation overvoltage withstand in which eventually the CVT is breakdown after being hit by overvoltage stress during capacitor bank switching.
{"title":"Investigation of 150 kV capacitor voltage transformer breakdown during capacitor bank switching","authors":"A. A. Kusuma, P. Pramana, B. S. Munir","doi":"10.1109/INAES.2017.8068570","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068570","url":null,"abstract":"This paper discuss about the investigation of 150kV capacitor voltage transformer (CVT) breakdown which is occurred simultaneously after capacitor bank disconnecting process. Analysis is performed referring to the last routine maintenance and digital fault recorder (DFR) data. Based on the analysis of both data and transient simulation analysis from the model created to represent the condition during the breakdown, it can be stated that the breakdown of 150kV CVT is due to aging of dielectric material in the CVT. Dielectric material aging of this CVT lead to the reduction of insulation overvoltage withstand in which eventually the CVT is breakdown after being hit by overvoltage stress during capacitor bank switching.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121864900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068561
R. Sriwijaya, Joy Naibaho, Yulio Putra Widatama
Nowadays, diving is done for a variety of purposes. One type of diving activity is scuba diving. In the process, time and scuba diving area are limited by the availability of gas for breathing. This research focused on the design of single passenger underwater vehicle frame. Frame is a major component of the underwater vehicle functioning as a holder of the load and a place to put all the components of the vehicle. This research was about design, simulation, and optimism of frame using finite element method. The frame was designed based on the outer shape of the underwater vehicle, the weight, type of material and the efficient manufacture of the frame production. Aluminum Alloy 2024-T3 was the material used in the design. Simulation was done with a load of the pressure distribution received by underwater vehicle body at a maximum depth and speed: 50 meters and 80 m/s. The result of this research was an efficiently strong frame which was secure and ready to be manufactured.
{"title":"Design of single passenger underwater vehicle","authors":"R. Sriwijaya, Joy Naibaho, Yulio Putra Widatama","doi":"10.1109/INAES.2017.8068561","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068561","url":null,"abstract":"Nowadays, diving is done for a variety of purposes. One type of diving activity is scuba diving. In the process, time and scuba diving area are limited by the availability of gas for breathing. This research focused on the design of single passenger underwater vehicle frame. Frame is a major component of the underwater vehicle functioning as a holder of the load and a place to put all the components of the vehicle. This research was about design, simulation, and optimism of frame using finite element method. The frame was designed based on the outer shape of the underwater vehicle, the weight, type of material and the efficient manufacture of the frame production. Aluminum Alloy 2024-T3 was the material used in the design. Simulation was done with a load of the pressure distribution received by underwater vehicle body at a maximum depth and speed: 50 meters and 80 m/s. The result of this research was an efficiently strong frame which was secure and ready to be manufactured.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129893383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068573
A. Muhtar, I. Mustika, Suharyanto
The P-V curve of photovoltaic system exhibits multiple peaks under various conditions of function and changes in meteorological conditions which reduce the effectiveness of conventional maximum power point tracking (MPPT) methods. Artificial Neural Network (ANN) is one of soft computing used for learning, modeling, and analyzing a very complicated phenomenon. Furthermore, there is an algorithm based on meta-heuristic, which is usually used for some optimization problems. One of meta-heuristic algorithms used in this paper is Particle Swarm Optimization (PSO) algorithm. In this paper, a comparison between ANN using PSO and ANN used back propagation as a learning algorithm to track MPP in photovoltaic system. Each training model was conducted with different learning rate, but the number of neurons and activation functions used was similar in each training model. To evaluate both training models of ANN, Mean Square Error (MSE) was used. The result showed that ANN using PSO as a training algorithm require 17 epochs to convergent, but ANN using back propagation require 105 epochs to convergent. Furthermore, the average value of power generated from PV system, ANN using PSO as training algorithm for track MPP was 90.92 kW and ANN using back propagation as training algorithm for track MPP was 88.65 kW.
{"title":"The comparison of ANN-BP and ANN-PSO as learning algorithm to track MPP in PVSystem","authors":"A. Muhtar, I. Mustika, Suharyanto","doi":"10.1109/INAES.2017.8068573","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068573","url":null,"abstract":"The P-V curve of photovoltaic system exhibits multiple peaks under various conditions of function and changes in meteorological conditions which reduce the effectiveness of conventional maximum power point tracking (MPPT) methods. Artificial Neural Network (ANN) is one of soft computing used for learning, modeling, and analyzing a very complicated phenomenon. Furthermore, there is an algorithm based on meta-heuristic, which is usually used for some optimization problems. One of meta-heuristic algorithms used in this paper is Particle Swarm Optimization (PSO) algorithm. In this paper, a comparison between ANN using PSO and ANN used back propagation as a learning algorithm to track MPP in photovoltaic system. Each training model was conducted with different learning rate, but the number of neurons and activation functions used was similar in each training model. To evaluate both training models of ANN, Mean Square Error (MSE) was used. The result showed that ANN using PSO as a training algorithm require 17 epochs to convergent, but ANN using back propagation require 105 epochs to convergent. Furthermore, the average value of power generated from PV system, ANN using PSO as training algorithm for track MPP was 90.92 kW and ANN using back propagation as training algorithm for track MPP was 88.65 kW.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"28 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114017253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068567
Hadi Saputra, Jamasri., H. Rochardjo
An experimental investigation was conducted to study the crush-worthiness parameters and behaviour of the bamboo-epoxy composite tube with chamfering angle 45° at one end. Quasi-static compressive loadings were applied axially to investigate the response of force-displacement during progressive collapses. The Shimadzu concrete compression testing machine with capacity 2000 KN was used in this experiment. Load-displacement curve and collapses mode of the specimen are presented and discussed. The results showed that this novel uni-directional bamboo-fibers/epoxy tube could absorb 5.01 KJ energy caused by moving of cross head as far as 50 mm. The other crush-worthiness parameters are force average, crush force efficiency, and the specific energy absorption which have value of 102.60 KN, 0.57, and 18.23 KJ/kg, respectively. The progressive collapse mechanisms which occur in this experimental design are consisting of fragmentation and splaying failure modes. In conclusion, the results demonstrate a novel Crash box product constructed from bamboo and epoxy with good performance findings within crash-worthiness parameters comparing to the original equipment manufacturer product.
{"title":"The crushing behaviour of bamboo — Epoxy composite tube","authors":"Hadi Saputra, Jamasri., H. Rochardjo","doi":"10.1109/INAES.2017.8068567","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068567","url":null,"abstract":"An experimental investigation was conducted to study the crush-worthiness parameters and behaviour of the bamboo-epoxy composite tube with chamfering angle 45° at one end. Quasi-static compressive loadings were applied axially to investigate the response of force-displacement during progressive collapses. The Shimadzu concrete compression testing machine with capacity 2000 KN was used in this experiment. Load-displacement curve and collapses mode of the specimen are presented and discussed. The results showed that this novel uni-directional bamboo-fibers/epoxy tube could absorb 5.01 KJ energy caused by moving of cross head as far as 50 mm. The other crush-worthiness parameters are force average, crush force efficiency, and the specific energy absorption which have value of 102.60 KN, 0.57, and 18.23 KJ/kg, respectively. The progressive collapse mechanisms which occur in this experimental design are consisting of fragmentation and splaying failure modes. In conclusion, the results demonstrate a novel Crash box product constructed from bamboo and epoxy with good performance findings within crash-worthiness parameters comparing to the original equipment manufacturer product.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124161343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068551
I. Mustika, Ridlo Qomarrullah, Selo
Recently, MIMO-OFDM Is widely used In wireless communication standards. In several cases, it utilizes higher-order modulation technique to increase transmission rate, but on the other hand it leads to being more susceptible to bit error. In this paper, we conducted 2×2-MIMO-OFDM implementation and performed a field experiment to evaluate the performance of MIMO-OFDM with 16-QAM, 64-QAM, and 256-QAM technique. The experiment was conducted in a real environment using USRP N210 hardware devices as the SDR platform. The result has provided a empirical reference that the transmission performance which is bit error rate (BER) was highly influenced by SNR level and modulation technique. It this experiment, the performance of 2×2-MIMO-OFDM spatial diversity with STBC algorithm in LOS was better than the one in NLOS environment.
{"title":"Performance evaluation of MIMO-OFDM system using quadrature amplitude modulation based on SDR platform","authors":"I. Mustika, Ridlo Qomarrullah, Selo","doi":"10.1109/INAES.2017.8068551","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068551","url":null,"abstract":"Recently, MIMO-OFDM Is widely used In wireless communication standards. In several cases, it utilizes higher-order modulation technique to increase transmission rate, but on the other hand it leads to being more susceptible to bit error. In this paper, we conducted 2×2-MIMO-OFDM implementation and performed a field experiment to evaluate the performance of MIMO-OFDM with 16-QAM, 64-QAM, and 256-QAM technique. The experiment was conducted in a real environment using USRP N210 hardware devices as the SDR platform. The result has provided a empirical reference that the transmission performance which is bit error rate (BER) was highly influenced by SNR level and modulation technique. It this experiment, the performance of 2×2-MIMO-OFDM spatial diversity with STBC algorithm in LOS was better than the one in NLOS environment.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"37 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134415986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068550
Anni Karimatul Fauziyyah, S. Sulistyo, I. Mustika
A wireless network technology is developed as the solution for the transportation business issue, named Vehicular ad-hoc Network (VANETs) in the context of Intelligent Transportation System (ITS). The vehicle density and speed affect the network performance. This research aims to analyze the performance of cluster formation method on VANET networks. The modeling of Semarang Highway has been used as the scenario object of vehicle density and speed measured by several parameters including cluster overhead, normalized cluster load, packet delivery ratio, and packet loss ratio.
{"title":"Performance analysis of cluster formation method in vehicular Ad-hoc networks","authors":"Anni Karimatul Fauziyyah, S. Sulistyo, I. Mustika","doi":"10.1109/INAES.2017.8068550","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068550","url":null,"abstract":"A wireless network technology is developed as the solution for the transportation business issue, named Vehicular ad-hoc Network (VANETs) in the context of Intelligent Transportation System (ITS). The vehicle density and speed affect the network performance. This research aims to analyze the performance of cluster formation method on VANET networks. The modeling of Semarang Highway has been used as the scenario object of vehicle density and speed measured by several parameters including cluster overhead, normalized cluster load, packet delivery ratio, and packet loss ratio.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130929774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068542
Mayangsari Nur Almusawwir, U. Usman, Sigit Puspito Wigati
Management of Interference Is the solution designing for LTE network to reduce inter symbol interference (ISI) and intercell interference (ICI) using the frequency reuse schemes which has the objective to maximize the coverage area and provide more capacity in cells, especially in cell edge. Based on those propositions, this paper analyzes the process of optimizing subcarrier and power allocation for wireless networks with multi-level soft frequency reuse (ML-SFR). In this case, LTE network planning has to maximize the coverage area of the Cimahi city, especially for maximizing the user in cell edge to obtain a good performance. Based on the analysis throughput, carrier to interference noise, quality by the coverage, and signal power level comparison between SFR and ML-SFR that has been done, the ML-SFR method can produce better performance because it was able to increase quality by coverage 0,03, increase throughput to 2.422,08 kbps, increase C/(I+N) to 4,41 dB and increase signal power level as well to 12,51 dBm.
{"title":"Analysis of LTE network planning with multi-level soft frequency reuse : Cimahi City case study","authors":"Mayangsari Nur Almusawwir, U. Usman, Sigit Puspito Wigati","doi":"10.1109/INAES.2017.8068542","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068542","url":null,"abstract":"Management of Interference Is the solution designing for LTE network to reduce inter symbol interference (ISI) and intercell interference (ICI) using the frequency reuse schemes which has the objective to maximize the coverage area and provide more capacity in cells, especially in cell edge. Based on those propositions, this paper analyzes the process of optimizing subcarrier and power allocation for wireless networks with multi-level soft frequency reuse (ML-SFR). In this case, LTE network planning has to maximize the coverage area of the Cimahi city, especially for maximizing the user in cell edge to obtain a good performance. Based on the analysis throughput, carrier to interference noise, quality by the coverage, and signal power level comparison between SFR and ML-SFR that has been done, the ML-SFR method can produce better performance because it was able to increase quality by coverage 0,03, increase throughput to 2.422,08 kbps, increase C/(I+N) to 4,41 dB and increase signal power level as well to 12,51 dBm.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125754613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068553
A. Munir, Eki Rizky Afthar, R. Safitri
This paper deals with the study on equivalent circuit of wideband bandpass filter (BPF) constructed using groundplane windowed split ring resonator (SRR). The study also covers realization and characterization of wideband BPF as well as its result comparison. The proposed wideband BPF is composed of 3 cascaded groundplane windowed SRR connected with microstrip lines. The equivalent circuit comprises of lumped elements of inductor and capacitor based on its geometrical structure and is performed using EM & Circuit simulator. Meanwhile, the realization is carried out using a 0.8mm thick FR4 Epoxy dielectric substrate with the dimension of 60mm × 20mm. The characterization result shows that the realized wideband BPF has the −3dB bandwidth response of 0.81GHz in the frequency range of 1.75GHz-2.56GHz which is comparable with the simulated result of equivalent circuit.
{"title":"Study on equivalent circuit of wideband BPF using groundplane windowed SRR and its realization","authors":"A. Munir, Eki Rizky Afthar, R. Safitri","doi":"10.1109/INAES.2017.8068553","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068553","url":null,"abstract":"This paper deals with the study on equivalent circuit of wideband bandpass filter (BPF) constructed using groundplane windowed split ring resonator (SRR). The study also covers realization and characterization of wideband BPF as well as its result comparison. The proposed wideband BPF is composed of 3 cascaded groundplane windowed SRR connected with microstrip lines. The equivalent circuit comprises of lumped elements of inductor and capacitor based on its geometrical structure and is performed using EM & Circuit simulator. Meanwhile, the realization is carried out using a 0.8mm thick FR4 Epoxy dielectric substrate with the dimension of 60mm × 20mm. The characterization result shows that the realized wideband BPF has the −3dB bandwidth response of 0.81GHz in the frequency range of 1.75GHz-2.56GHz which is comparable with the simulated result of equivalent circuit.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"73 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120975107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.1109/INAES.2017.8068563
Suyitno, Lazuardi Pujilaksono
Ultra high molecular weight polyethylene (UHMWPE) is an advanced polymer well-known for its outstanding physical and mechanical properties. The material is highly resistant to corrosion and abrasion. It has high impact strength and low coefficient of friction, naming it a suitable material for bearing applications. The material also has a high strength-to-weight ratio. In this study, the fatigue crack behavior of UHMWPE PE1000 and TIVAR H.O.T are of interest. The objective of this study is to determine the effect of load ratio R on the fatigue crack growth rate. The load ratio R was varied between 0.1, 0.3, and 0.5. Compact-tension specimens were used to perform experiments. The specimens were tested at room temperature with loading frequency of 10 Hz. Advancing crack growths were measured using a traveling microscope. The crack growth rates da/dN as a function of stress intensity factor deltaK were plotted in a log-log scale for each testing condition. For the two material, increasing load ratio R led to an increase in fatigue crack propagation resistance, as determined by the decrease in fatigue crack growth rate for a given deltaK value. When the two materials are in comparison, TIVAR H.O.T shows superior fatigue crack resistance. For a given deltaK value, PE1000 virgin displays higher fatigue crack growth rates than TIVAR H.O.T.
超高分子量聚乙烯(UHMWPE)是一种先进的聚合物，以其卓越的物理和机械性能而闻名。这种材料耐腐蚀、耐磨损。它具有高冲击强度和低摩擦系数，使其成为轴承应用的合适材料。该材料还具有高强度重量比。在本研究中，UHMWPE PE1000和TIVAR H.O.T的疲劳裂纹行为是感兴趣的。本研究的目的是确定载荷比R对疲劳裂纹扩展速率的影响。负荷比R在0.1、0.3、0.5之间变化。采用压紧试样进行实验。试件在室温下进行试验，加载频率为10 Hz。利用移动显微镜测量裂纹扩展。在每个测试条件下，裂纹扩展速率da/dN作为应力强度因子deltaK的函数以对数-对数尺度绘制。对于这两种材料，载荷比R的增加导致疲劳裂纹扩展阻力的增加，这是由给定deltaK值下疲劳裂纹扩展速率的降低决定的。两种材料对比发现，TIVAR H.O.T具有较好的抗疲劳开裂性能。在给定的deltaK值下，PE1000 virgin的疲劳裂纹扩展速率高于TIVAR hot
{"title":"Fatigue crack propagation of ultra-high molecular weight polyethylene","authors":"Suyitno, Lazuardi Pujilaksono","doi":"10.1109/INAES.2017.8068563","DOIUrl":"https://doi.org/10.1109/INAES.2017.8068563","url":null,"abstract":"Ultra high molecular weight polyethylene (UHMWPE) is an advanced polymer well-known for its outstanding physical and mechanical properties. The material is highly resistant to corrosion and abrasion. It has high impact strength and low coefficient of friction, naming it a suitable material for bearing applications. The material also has a high strength-to-weight ratio. In this study, the fatigue crack behavior of UHMWPE PE1000 and TIVAR H.O.T are of interest. The objective of this study is to determine the effect of load ratio R on the fatigue crack growth rate. The load ratio R was varied between 0.1, 0.3, and 0.5. Compact-tension specimens were used to perform experiments. The specimens were tested at room temperature with loading frequency of 10 Hz. Advancing crack growths were measured using a traveling microscope. The crack growth rates da/dN as a function of stress intensity factor deltaK were plotted in a log-log scale for each testing condition. For the two material, increasing load ratio R led to an increase in fatigue crack propagation resistance, as determined by the decrease in fatigue crack growth rate for a given deltaK value. When the two materials are in comparison, TIVAR H.O.T shows superior fatigue crack resistance. For a given deltaK value, PE1000 virgin displays higher fatigue crack growth rates than TIVAR H.O.T.","PeriodicalId":382919,"journal":{"name":"2017 7th International Annual Engineering Seminar (InAES)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131149625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：