Pub Date : 2022-04-26DOI: 10.36526/v-mac.v7i1.1945
Beni Anwarudin, Gatut Rubiono, Adi Pratama Putra
Handling heat energy in the industrial world is very necessary. Heat exchangers have a fluid system that can be designed and developed using pipes. Heat transfer in a heat exchanger is a support for the performance of a heat exchanger to make it better. In this study, a heat exchanger was tested by placing a variety of barriers on the field of heat transfer flow and the addition of variations in the flow rate on the heat pipe. This test uses a aliran inch water flow pipe and a 2.5 inch iron tube pipe and a barrier material using aluminum. Based on the test results obtained a graph of varying heat transfer increases in each barrier. Differences in barrier variations and variations in water discharge greatly affect the value of heat transfer results. The purpose of this study was to look for the effectiveness and effect of adding a flow barrier to the performance of heat transfer in a heat exchanger. Keywords: Heat Exchanger, Effectiveness of Heat Transfer Heat
{"title":"Pengaruh Bentuk Penghalang Bervariasi Pada Proses Perpindahan Panas","authors":"Beni Anwarudin, Gatut Rubiono, Adi Pratama Putra","doi":"10.36526/v-mac.v7i1.1945","DOIUrl":"https://doi.org/10.36526/v-mac.v7i1.1945","url":null,"abstract":"Handling heat energy in the industrial world is very necessary. Heat exchangers have a fluid system that can be designed and developed using pipes. Heat transfer in a heat exchanger is a support for the performance of a heat exchanger to make it better. In this study, a heat exchanger was tested by placing a variety of barriers on the field of heat transfer flow and the addition of variations in the flow rate on the heat pipe. This test uses a aliran inch water flow pipe and a 2.5 inch iron tube pipe and a barrier material using aluminum. Based on the test results obtained a graph of varying heat transfer increases in each barrier. Differences in barrier variations and variations in water discharge greatly affect the value of heat transfer results. The purpose of this study was to look for the effectiveness and effect of adding a flow barrier to the performance of heat transfer in a heat exchanger. \u0000Keywords: Heat Exchanger, Effectiveness of Heat Transfer Heat","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129421649","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 : 2022-04-26DOI: 10.36526/v-mac.v7i1.1483
Farid Hidayatulloh, Gatut Rubiono, I. Qiram
Cooling using air conditioning in passenger vehicles is very important for the user's comfort. The study aims to get the effect of double blowers on the cooling performance of passenger vehicles. The research was conducted using laboratory-scale equipment. The wind speed of the blower varied by 3.1; 3.5 and 3.7 m/s. To measure wind speed using a digital anemometer. Cabin room temperature is measured using type K thermocouples for 4 measurement points, namely the left rear passenger seat (point 1), the right rear passenger seat (point 2), then the front passenger seat (point 3), and the driver's position (point 4). Measurement times varied by 5, 10, 15 and 20 minutes. Visualizing airflow using the smoke method and recorded with a camera. In this study showed that the double blower system affects the cooling performance of passenger vehicle air conditioners
{"title":"PENGARUH SISTEM DOUBLE BLOWER TERHADAP KINERJA PENDINGINAN AC KENDARAAN PENUMPANG","authors":"Farid Hidayatulloh, Gatut Rubiono, I. Qiram","doi":"10.36526/v-mac.v7i1.1483","DOIUrl":"https://doi.org/10.36526/v-mac.v7i1.1483","url":null,"abstract":"Cooling using air conditioning in passenger vehicles is very important for the user's comfort. The study aims to get the effect of double blowers on the cooling performance of passenger vehicles. The research was conducted using laboratory-scale equipment. \u0000The wind speed of the blower varied by 3.1; 3.5 and 3.7 m/s. To measure wind speed using a digital anemometer. Cabin room temperature is measured using type K thermocouples for 4 measurement points, namely the left rear passenger seat (point 1), the right rear passenger seat (point 2), then the front passenger seat (point 3), and the driver's position (point 4). \u0000Measurement times varied by 5, 10, 15 and 20 minutes. Visualizing airflow using the smoke method and recorded with a camera. In this study showed that the double blower system affects the cooling performance of passenger vehicle air conditioners","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115116413","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 : 2021-10-31DOI: 10.36526/v-mac.v6i2.1520
R. Putra, Anas Mukhtar, I. Qiram
Kenyamanan dan keamanan dari pengendara kendaraan dapat ditentukan dari kestabilan dan Laju kendaraan. Kestabilan dari laju kendaraan ATV salah satunya ditentukan oleh ketepatan dari pemilihan dan perancangan sistem suspensi yang dipasang pada roda depan dan roda belakang. Namun dalam perkembangannya tidak semua sistem suspensi mampu memberikan kenyamanan dan kestabilan yang optimal. Dalam hal ini analisis kenyamanan dalam berkendaran difokuskan pada kemampuan sistem suspensi dalam menstabilkan guncangan. Data hasil penelitian menunjukkan bahwa dengan memperhitungkan kondisi jalan (jalan rata, sedikit bergelombang, dan bergelombang), beban yang diangkut (0 Kg, 40 Kg, dan 50 Kg), serta kecepatan yang sudah ditentukan (300 Rpm, 600 Rpm, dan 900 Rpm) pada kendaraan ATV menunjukkan tingkat kestabilan dan kenyamanan dari kendaraan ATV tersebut masih tergolong normal, karena tidak melebihi dari batas maksimum area kerja Shock Absober yang digunakan, yaitu sebesar 50 mm. Dari hasil penelitian didapatkan defleksi pegas tertinggi sebesar 22,22 mm dengan kondisi jalan bergelombang, dan dengan beban 50 kg, serta kecepatan yang digunakan 300 rpm. Data hasil penelitian didapatkan dengan bantuan alat khusus pengukur defleksi pegas yaitu sensor Ultrasonik SRF-04. Dari hasil penelitian juga ditemukan bahwa tingkat defleksi pegas tinggi ketika berada pada kondisi jalan yang bergelombang, serta semakin tinggi juga tingkat defleksi pegas ketika beban dinaikkan. Sedangkan ketika kecepatan dinaikkan maka tingkat defleksi pegas akan menurun.Kata kunci: Kendaraan ATV, Sistem Suspensi, Kondisi Jalan, Beban, Kecepatan, Shock Absober, Sensor Ultrasonik SRF-04
{"title":"Uji Kerja Dinamis Sistem Suspensi Pada Kendaraan Atv","authors":"R. Putra, Anas Mukhtar, I. Qiram","doi":"10.36526/v-mac.v6i2.1520","DOIUrl":"https://doi.org/10.36526/v-mac.v6i2.1520","url":null,"abstract":"Kenyamanan dan keamanan dari pengendara kendaraan dapat ditentukan dari kestabilan dan Laju kendaraan. Kestabilan dari laju kendaraan ATV salah satunya ditentukan oleh ketepatan dari pemilihan dan perancangan sistem suspensi yang dipasang pada roda depan dan roda belakang. Namun dalam perkembangannya tidak semua sistem suspensi mampu memberikan kenyamanan dan kestabilan yang optimal. Dalam hal ini analisis kenyamanan dalam berkendaran difokuskan pada kemampuan sistem suspensi dalam menstabilkan guncangan. Data hasil penelitian menunjukkan bahwa dengan memperhitungkan kondisi jalan (jalan rata, sedikit bergelombang, dan bergelombang), beban yang diangkut (0 Kg, 40 Kg, dan 50 Kg), serta kecepatan yang sudah ditentukan (300 Rpm, 600 Rpm, dan 900 Rpm) pada kendaraan ATV menunjukkan tingkat kestabilan dan kenyamanan dari kendaraan ATV tersebut masih tergolong normal, karena tidak melebihi dari batas maksimum area kerja Shock Absober yang digunakan, yaitu sebesar 50 mm. Dari hasil penelitian didapatkan defleksi pegas tertinggi sebesar 22,22 mm dengan kondisi jalan bergelombang, dan dengan beban 50 kg, serta kecepatan yang digunakan 300 rpm. Data hasil penelitian didapatkan dengan bantuan alat khusus pengukur defleksi pegas yaitu sensor Ultrasonik SRF-04. Dari hasil penelitian juga ditemukan bahwa tingkat defleksi pegas tinggi ketika berada pada kondisi jalan yang bergelombang, serta semakin tinggi juga tingkat defleksi pegas ketika beban dinaikkan. Sedangkan ketika kecepatan dinaikkan maka tingkat defleksi pegas akan menurun.Kata kunci: Kendaraan ATV, Sistem Suspensi, Kondisi Jalan, Beban, Kecepatan, Shock Absober, Sensor Ultrasonik SRF-04","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123224204","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 : 2021-10-31DOI: 10.36526/v-mac.v6i2.1517
Mujiono, I. Qiram, Gatut Rubiono
Tube design is one aspect that affects the kinetics of ball motion and material particles on the performance of ball mill machines. Variations in the study include profile diameters of 0.75”, 1” and 1.5” while the number of profiles is 2;3; and 4 trial durations of 7 minutes with 6 crushing balls. Mass characteristics of the milled product on a 16 mesh sieve; 60; and 100. The results showed that there was an effect of variations in the diameter of the barrier profile and the number of profiles on the production capacity of the ballmill machine. From the results of the comparative analysis of the profile diameter and the number of profiles, the highest value was obtained at a diameter variation of 1.5” as many as 4 profiles in the number of balls 6 with an experimental time of 7 minutes with a production capacity of 17% mesh 16, mesh 60 15.6% and mesh 100 of 22.6%. The results have also shown the p erformance of the ballmill machine against product loss at smaller particle dimensionsKeywords: Ball mill, ball count, time length, tube wall profile
{"title":"Pengaruh Penambahan Profil Pada Dinding Silinder Ball-Mill Terhadap Distribusi Massa Serbuk Batu Bata","authors":"Mujiono, I. Qiram, Gatut Rubiono","doi":"10.36526/v-mac.v6i2.1517","DOIUrl":"https://doi.org/10.36526/v-mac.v6i2.1517","url":null,"abstract":"Tube design is one aspect that affects the kinetics of ball motion and material particles on the performance of ball mill machines. Variations in the study include profile diameters of 0.75”, 1” and 1.5” while the number of profiles is 2;3; and 4 trial durations of 7 minutes with 6 crushing balls. Mass characteristics of the milled product on a 16 mesh sieve; 60; and 100. The results showed that there was an effect of variations in the diameter of the barrier profile and the number of profiles on the production capacity of the ballmill machine. From the results of the comparative analysis of the profile diameter and the number of profiles, the highest value was obtained at a diameter variation of 1.5” as many as 4 profiles in the number of balls 6 with an experimental time of 7 minutes with a production capacity of 17% mesh 16, mesh 60 15.6% and mesh 100 of 22.6%. The results have also shown the p erformance of the ballmill machine against product loss at smaller particle dimensionsKeywords: Ball mill, ball count, time length, tube wall profile","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134441121","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 : 2021-10-31DOI: 10.36526/v-mac.v6i2.1521
Dicky Pratama, I. Qiram, Anas Mukhtar
Piezoelektrik merupakan salah satu komponen elektronik yang mampu mengkonversi energi getaran menjadi energi listrik. Peristiwa munculnya getaran diakibatkan tumbukan air hujan terhadap penampang atap bangunan. ada beberapa hal yang mempengaruhi produksi energi listrik adalah sudut kemiringan dan bahan material atap. Penelitian ini bertujuan untuk mengidentifikasi pengaruh sudut kemiringan dan jenis material atap. Metode yang digunakan pada penelitian ini adalah menggunakan sudut kemiringan 10o, 20o, 30o, 40odan jenis material atap plastik gelombang dan galvalum dengan perlakuan hujan gerimis, sedang, dan deras. Hasil penelitian telah menunjukkan adanya pengaruh sudut kemiringan dan jenis material atap terhadap getaran dan tegangan listrik yang dihasilkan. Dari hasil analisa diketahui bahwa sudut kemiringan 10opada jenis material atap galvalum dengan perlakuan hujan deras menghasilkan getaran dan tegangan listrik tertinggi yaitu 16,42 mm/s dan 0,4322 volt. Sedangkan getaran dan tegangan listrik terendah diperoleh pada sudut kemiringan 40opada jenis material atap plastrik gelombang dengan perlakuan hujan gerimis yaitu 6,92 mm/s dan 0,1205 volt.Kata kunci : tegangan, kemiringan atap, curah hujan
{"title":"Pengaruh Sudut Kemiringan Dan Jenis Material Atap Terhadap Tegangan Listrik Yang Dihasilkan Piezolektrik","authors":"Dicky Pratama, I. Qiram, Anas Mukhtar","doi":"10.36526/v-mac.v6i2.1521","DOIUrl":"https://doi.org/10.36526/v-mac.v6i2.1521","url":null,"abstract":"Piezoelektrik merupakan salah satu komponen elektronik yang mampu mengkonversi energi getaran menjadi energi listrik. Peristiwa munculnya getaran diakibatkan tumbukan air hujan terhadap penampang atap bangunan. ada beberapa hal yang mempengaruhi produksi energi listrik adalah sudut kemiringan dan bahan material atap. Penelitian ini bertujuan untuk mengidentifikasi pengaruh sudut kemiringan dan jenis material atap. Metode yang digunakan pada penelitian ini adalah menggunakan sudut kemiringan 10o, 20o, 30o, 40odan jenis material atap plastik gelombang dan galvalum dengan perlakuan hujan gerimis, sedang, dan deras. Hasil penelitian telah menunjukkan adanya pengaruh sudut kemiringan dan jenis material atap terhadap getaran dan tegangan listrik yang dihasilkan. Dari hasil analisa diketahui bahwa sudut kemiringan 10opada jenis material atap galvalum dengan perlakuan hujan deras menghasilkan getaran dan tegangan listrik tertinggi yaitu 16,42 mm/s dan 0,4322 volt. Sedangkan getaran dan tegangan listrik terendah diperoleh pada sudut kemiringan 40opada jenis material atap plastrik gelombang dengan perlakuan hujan gerimis yaitu 6,92 mm/s dan 0,1205 volt.Kata kunci : tegangan, kemiringan atap, curah hujan","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134511475","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 : 2021-10-31DOI: 10.36526/v-mac.v6i2.1519
Dimas Adi Perwira, Henry Widya Prasetya, Muh. Adib Kurniawan
One of the railway facilities uses stainless steel as the main construction material. The method of joining stainless steel materials, especially the most widely used is the SMAW welding technique. The purpose of this study was to determine the tensile strength of SMAW welding joints on stainless steel 304 material with variations in diameter of rod filler as filler material an d variations in current from DC inverter electric welding machine. The diameter of rod filler as filler material is 1 mm, 2 mm and 3 mm. The variation of the current of the DC inverter of the electric welding machine is 70 A, 100 A and 120 A. The results show the highest tensile strength of the 304 stainless steel welded connection with an average tensile stress of 34.48 MPa on the current electric welding inverter. 120 A is used and the diameter of the rod filler is 2 mm. And the tensile strength of the welding connection of the 304 stainless steel material is the lowest with an average tensile stress of 17.01 MPa at the electric welding inverter current used is 70 A and the diameter of the rod filler is 3 mm.Keyword: SMAW welding, filler, current and stainless steel
{"title":"Pengaruh Variasi Diameter Filler Dan Kuat Arus Terhadap Kekuatan Tarik Hasil Pengelasan SMAW Material Stainless Steel 304","authors":"Dimas Adi Perwira, Henry Widya Prasetya, Muh. Adib Kurniawan","doi":"10.36526/v-mac.v6i2.1519","DOIUrl":"https://doi.org/10.36526/v-mac.v6i2.1519","url":null,"abstract":"One of the railway facilities uses stainless steel as the main construction material. The method of joining stainless steel materials, especially the most widely used is the SMAW welding technique. The purpose of this study was to determine the tensile strength of SMAW welding joints on stainless steel 304 material with variations in diameter of rod filler as filler material an d variations in current from DC inverter electric welding machine. The diameter of rod filler as filler material is 1 mm, 2 mm and 3 mm. The variation of the current of the DC inverter of the electric welding machine is 70 A, 100 A and 120 A. The results show the highest tensile strength of the 304 stainless steel welded connection with an average tensile stress of 34.48 MPa on the current electric welding inverter. 120 A is used and the diameter of the rod filler is 2 mm. And the tensile strength of the welding connection of the 304 stainless steel material is the lowest with an average tensile stress of 17.01 MPa at the electric welding inverter current used is 70 A and the diameter of the rod filler is 3 mm.Keyword: SMAW welding, filler, current and stainless steel","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123886882","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 : 2021-10-31DOI: 10.36526/v-mac.v6i2.1518
Muhammad Firmansyah, I. Qiram, Gatut Rubiono
The nozzle is a fluid flow spraying device to increase the velocity of the outflow. Differences in the nozzle holes can affect the flow of fluid that comes out. The purpose of the study was to determine the effect of variations in nozzle hole roughness with a mixture of pertalite and spiritus fuels on the characteristics of the flame. In this research, experimentally using Nozzle Cutting Tip LPG M.02 with a given treatment of threading roughness in the nozzle hole with a thread spacing of 0.5mm, 1mm, and without treatment (Standard) while the fuel used is a mixture of Pertalite and Pertalite fuels. spirit with a mixture of (75ml:75ml), (100ml:50ml), and (125ml:25ml), data collection includes the rate of fuel consumption for 3 minutes, the temperature of the fire includes (bottom, middle, top fire) with a distance of each measurement 20cm, height fire, cross-sectional area of fire and area based on the color of the fire which is then to determine the characteristics of the fire produced in each variation used. The results showed that the treatment of roughness of threading at the nozzle hole and the mixing of fuel between Pertalite and Spiritus had an effect on the characteristics of the flame, where the highest change in fire characteristics was in the variation of the 1mm threaded nozzle hole with the percentage of the fuel mixture 125ml:25ml with an air flow pressure of 0.5 LPM. . It has a fuel consumption rate of 9 ml/minute, fire temperature (below 776 oC, middle 717 oC, above 617oC), flame height is 73.21cm, and blue flame area is 31.22cm2.Keywords: Nozzle, Pertalite, Spiritus, Fire Characteristics
{"title":"Pengaruh Variasi Kekasaran Lubang Nozzle Dengan Campuran Bahan Bakar Pertalite dan Spiritus Terhadap Karakteristik Nyala Api","authors":"Muhammad Firmansyah, I. Qiram, Gatut Rubiono","doi":"10.36526/v-mac.v6i2.1518","DOIUrl":"https://doi.org/10.36526/v-mac.v6i2.1518","url":null,"abstract":"The nozzle is a fluid flow spraying device to increase the velocity of the outflow. Differences in the nozzle holes can affect the flow of fluid that comes out. The purpose of the study was to determine the effect of variations in nozzle hole roughness with a mixture of pertalite and spiritus fuels on the characteristics of the flame. In this research, experimentally using Nozzle Cutting Tip LPG M.02 with a given treatment of threading roughness in the nozzle hole with a thread spacing of 0.5mm, 1mm, and without treatment (Standard) while the fuel used is a mixture of Pertalite and Pertalite fuels. spirit with a mixture of (75ml:75ml), (100ml:50ml), and (125ml:25ml), data collection includes the rate of fuel consumption for 3 minutes, the temperature of the fire includes (bottom, middle, top fire) with a distance of each measurement 20cm, height fire, cross-sectional area of fire and area based on the color of the fire which is then to determine the characteristics of the fire produced in each variation used. The results showed that the treatment of roughness of threading at the nozzle hole and the mixing of fuel between Pertalite and Spiritus had an effect on the characteristics of the flame, where the highest change in fire characteristics was in the variation of the 1mm threaded nozzle hole with the percentage of the fuel mixture 125ml:25ml with an air flow pressure of 0.5 LPM. . It has a fuel consumption rate of 9 ml/minute, fire temperature (below 776 oC, middle 717 oC, above 617oC), flame height is 73.21cm, and blue flame area is 31.22cm2.Keywords: Nozzle, Pertalite, Spiritus, Fire Characteristics","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133729307","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 : 2021-10-31DOI: 10.36526/v-mac.v6i2.1516
Fasrul Anugrah, I. Qiram, Anas Mukhtar
The propeller is an important part of the ship's propulsion installation. Differences in propeller design can affect the propulsion performance of the ship. This study aims to determine the effect of variations in dimension ratio and propeller installation pattern on the performance of the contra rotation propeller type boat. The research was carried out experimentally by using variations of three-dimensional propeller ratios including R1 (1:1); R2 (1:1/2) and R3 (1:1/4), while the pattern of placement of the shaft tilt angle includes 15oand 20o. The flow pattern is conditioned with the waveless and wavy flow. Data collection includes boat speed and visualization of fluid flow behind the propeller which is then analyzed to obtain performance characteristics for each variation used. The results showed that the dimension ratio and the pattern of contra rotation propeller installation affected the speed and thrust of the boat, where the optimum power was obtained at the variation of the ratio R2 at a shaft tilt angle of 15owith the provision of a water flow mechanism without waves resulting in a speed of 0.576923 cm/second and under conditions of wavy at 0.523256 cm/second. The greatest thrust occurs in conditions of water flow without waves at the variation of the ratio R2 with a value of 33.23 kN and in wavy conditions of 30.13 kN. Visualization of fluid flow behind the shaft has shown the performance of the contra rotation propeller in various variations given through changes in the shape and length of the resulting path .Keywords: dimension ratio, installation pattern, contra rotation propeller, boat performance
{"title":"Pengaruh Pola Pemasangan dan Rasio Dimensi Propeller Terhadap Unjuk Kerja Perahu Tipe Penggerak Contra Rotation Propeller","authors":"Fasrul Anugrah, I. Qiram, Anas Mukhtar","doi":"10.36526/v-mac.v6i2.1516","DOIUrl":"https://doi.org/10.36526/v-mac.v6i2.1516","url":null,"abstract":"The propeller is an important part of the ship's propulsion installation. Differences in propeller design can affect the propulsion performance of the ship. This study aims to determine the effect of variations in dimension ratio and propeller installation pattern on the performance of the contra rotation propeller type boat. The research was carried out experimentally by using variations of three-dimensional propeller ratios including R1 (1:1); R2 (1:1/2) and R3 (1:1/4), while the pattern of placement of the shaft tilt angle includes 15oand 20o. The flow pattern is conditioned with the waveless and wavy flow. Data collection includes boat speed and visualization of fluid flow behind the propeller which is then analyzed to obtain performance characteristics for each variation used. The results showed that the dimension ratio and the pattern of contra rotation propeller installation affected the speed and thrust of the boat, where the optimum power was obtained at the variation of the ratio R2 at a shaft tilt angle of 15owith the provision of a water flow mechanism without waves resulting in a speed of 0.576923 cm/second and under conditions of wavy at 0.523256 cm/second. The greatest thrust occurs in conditions of water flow without waves at the variation of the ratio R2 with a value of 33.23 kN and in wavy conditions of 30.13 kN. Visualization of fluid flow behind the shaft has shown the performance of the contra rotation propeller in various variations given through changes in the shape and length of the resulting path .Keywords: dimension ratio, installation pattern, contra rotation propeller, boat performance","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125865759","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 : 2021-04-21DOI: 10.36526/V-MAC.V6I1.1292
Achmad Maulana Risky, D. Hermawan, N. Finahari
Dancers experience various injuries, because dancing requires high intensity movements. Frequent injuries to dancers involve overuse of joints and muscles. The highest potential for injury is in the knee. However, in the Bapang Malangan Dance, the arms are the limbs that are often used in extreme movements. Thus the potential for injury can be high. This study focuses on the kinematics of arm movement of the Bapang Malangan Dance in relation to the possibility of injury. The research was carried out through analyzing image data resulting from the rendering of dance video footage, following a kinematics-based biomechanical framework and engineering dynamics. The results showed that the kinematic analysis of the Bapang dancer's arm was depicted only on the change in position because velocity and velocity could not be measured directly. Changes in the position of the Bapang dancer's arms can be depicted in graphic form through frame analysis of the transformed video files into image files. The arm joints that get a lot of weight are the shoulder and elbow joints, which in Bapang Malangan dancers have the potential to experience injury due to tugging and twisting. The complexities of movements and changes in dancer movements turn out to make it difficult to determine the speed and acceleration by analyzing the rendered images. A measuring instrument is needed that can directly measure arm movements when dancing. This tool must not use cables so as not to obstruct the dance movement. Keywords: biomechanic, kinematic, arm joint, dancer, Bapang Malangan
{"title":"Kinematika Sendi Lengan Penari Bapang Malangan","authors":"Achmad Maulana Risky, D. Hermawan, N. Finahari","doi":"10.36526/V-MAC.V6I1.1292","DOIUrl":"https://doi.org/10.36526/V-MAC.V6I1.1292","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000Dancers experience various injuries, because dancing requires high intensity movements. Frequent injuries to dancers involve overuse of joints and muscles. The highest potential for injury is in the knee. However, in the Bapang Malangan Dance, the arms are the limbs that are often used in extreme movements. Thus the potential for injury can be high. This study focuses on the kinematics of arm movement of the Bapang Malangan Dance in relation to the possibility of injury. The research was carried out through analyzing image data resulting from the rendering of dance video footage, following a kinematics-based biomechanical framework and engineering dynamics. The results showed that the kinematic analysis of the Bapang dancer's arm was depicted only on the change in position because velocity and velocity could not be measured directly. Changes in the position of the Bapang dancer's arms can be depicted in graphic form through frame analysis of the transformed video files into image files. The arm joints that get a lot of weight are the shoulder and elbow joints, which in Bapang Malangan dancers have the potential to experience injury due to tugging and twisting. The complexities of movements and changes in dancer movements turn out to make it difficult to determine the speed and acceleration by analyzing the rendered images. A measuring instrument is needed that can directly measure arm movements when dancing. This tool must not use cables so as not to obstruct the dance movement. \u0000 \u0000 \u0000 \u0000 \u0000 \u0000Keywords: biomechanic, kinematic, arm joint, dancer, Bapang Malangan \u0000 \u0000 \u0000 \u0000","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132072151","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 : 2021-04-21DOI: 10.36526/V-MAC.V6I1.1152
Moh. Nasih, I. Qiram, Anas Mukhtar
Hammer mill is a machine for crushing hard materials and flour. By modifying the hammer shapes and varying the motor rotation speed, it is hoped that it will be able to crush the shells into powder with different product dimensions. The quality of the product produced will describe the performance of the hammer mill machine. Experiments were carried out by making the ends of the batter dimensions 1, 2 and 3 cm with a motor speed of 1000 rpm, 1100 rpm and 1200 rpm. The highest yield of the 3 cm bat type is at 1200 rpm at 96.7%. Keywords: Clamshell, Hammer Mill
{"title":"Pengaruh Dimensi Ujung Pemukul Terhadap Penggilingan Kulit Kerang Dengan Mesin Hammer Mill","authors":"Moh. Nasih, I. Qiram, Anas Mukhtar","doi":"10.36526/V-MAC.V6I1.1152","DOIUrl":"https://doi.org/10.36526/V-MAC.V6I1.1152","url":null,"abstract":" \u0000Hammer mill is a machine for crushing hard materials and flour. By modifying the hammer shapes and varying the motor rotation speed, it is hoped that it will be able to crush the shells into powder with different product dimensions. The quality of the product produced will describe the performance of the hammer mill machine. Experiments were carried out by making the ends of the batter dimensions 1, 2 and 3 cm with a motor speed of 1000 rpm, 1100 rpm and 1200 rpm. The highest yield of the 3 cm bat type is at 1200 rpm at 96.7%. \u0000 \u0000Keywords: Clamshell, Hammer Mill","PeriodicalId":148301,"journal":{"name":"V-MAC (Virtual of Mechanical Engineering Article)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114518322","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}
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