Stainless steel has good mechanical properties compared to other materials for strength and hardness, usually will experience an increase in hardness after hardening. The purpose of this study was to obtain information about: Value of hardness and strength Impact of martensitic stainless steel annealed with variations in temperature and cooling. The research method used is an experimental method, namely by annealing martensitic stainless steel with variations in temperature and cooling rate. The results were tested for Impact and hardness using the Rockwell C (HRC) method with the category of Research Infrastructure development and science and technology in the field of Mechanical Engineering. The research results are expected to be used as an alternative to improve the mechanical properties of materials, especially in the annealing process. The level of technological readiness to be achieved: 2, because in this study a model is made to test the truth of the basic principle that the hardness level of martensitic steel in annealing is influenced by varying temperatures and cooling.
{"title":"Pengaruh Temperatur Pemanasan dan Pendinginan Terhadap Sifat Mekanik Pada Proses Annealing Baja AISI410 Setelah Pengerasan","authors":"Bayu Pranoto, S. Subagiyo, Samsul Hadi","doi":"10.33795/jetm.v5i02.132","DOIUrl":"https://doi.org/10.33795/jetm.v5i02.132","url":null,"abstract":"Stainless steel has good mechanical properties compared to other materials for strength and hardness, usually will experience an increase in hardness after hardening. The purpose of this study was to obtain information about: Value of hardness and strength Impact of martensitic stainless steel annealed with variations in temperature and cooling. The research method used is an experimental method, namely by annealing martensitic stainless steel with variations in temperature and cooling rate. The results were tested for Impact and hardness using the Rockwell C (HRC) method with the category of Research Infrastructure development and science and technology in the field of Mechanical Engineering. The research results are expected to be used as an alternative to improve the mechanical properties of materials, especially in the annealing process. The level of technological readiness to be achieved: 2, because in this study a model is made to test the truth of the basic principle that the hardness level of martensitic steel in annealing is influenced by varying temperatures and cooling.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88221178","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}
M. Fakhruddin, I. Mashudi, Mochamad Muzaki, H. Firmansyah, Bayu Pranoto, H. Wicaksono
Fiber-reinforced composites can be classified into two parts, namely short fiber composites and long fiber composites. Long fibers are stronger than short fibers. Long fiber (continuous fiber) is more efficient in laying than short fiber but short fiber is easier to lay than long fiber. Fiber length affects the processability of the fiber composite. Judging from the theory, long fibers can continue the load and stress from the stress point to the other fiber. In this study, the volume of chopped glass fiber composite with random matrix direction was varied with respect to polyester resin. Making forged fiberglass composites with the press mold method to minimize the occurrence of air bubbles during the composite molding process. Testing the mechanical properties of the forged fiberglass composite using the three-point bending and tensile testing methods. The expected result is the variation of the volume fraction of random chopped glass fiber to polyester resin. The TKT to be achieved from this research is TKT level 3, which is an analytical study that supports the prediction of the performance of the effect of the volume fraction between glass fiber and resin on the mechanical properties of the tensile and bending strength of forged glass fiber composites
{"title":"Pengaruh Fraksi Volume Terhadap Sifat Mekanis Komposit Forged Fiberglass Metode Compression Mould","authors":"M. Fakhruddin, I. Mashudi, Mochamad Muzaki, H. Firmansyah, Bayu Pranoto, H. Wicaksono","doi":"10.33795/jetm.v5i02.134","DOIUrl":"https://doi.org/10.33795/jetm.v5i02.134","url":null,"abstract":"Fiber-reinforced composites can be classified into two parts, namely short fiber composites and long fiber composites. Long fibers are stronger than short fibers. Long fiber (continuous fiber) is more efficient in laying than short fiber but short fiber is easier to lay than long fiber. Fiber length affects the processability of the fiber composite. Judging from the theory, long fibers can continue the load and stress from the stress point to the other fiber. In this study, the volume of chopped glass fiber composite with random matrix direction was varied with respect to polyester resin. Making forged fiberglass composites with the press mold method to minimize the occurrence of air bubbles during the composite molding process. Testing the mechanical properties of the forged fiberglass composite using the three-point bending and tensile testing methods. The expected result is the variation of the volume fraction of random chopped glass fiber to polyester resin. The TKT to be achieved from this research is TKT level 3, which is an analytical study that supports the prediction of the performance of the effect of the volume fraction between glass fiber and resin on the mechanical properties of the tensile and bending strength of forged glass fiber composites","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"173 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79579517","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}
Welding has developed rapidly at this time, both for metallic and non-metallic materials, one of the methods used for plastic welding is Hot-Gas Welding. Plastic is a very difficult material to weld due to its low thermal conductivity. The quality of the mechanical properties of the existing plastic welded joints is not close to the strength of plastic objects without welding. The purpose of this study was to determine the effect of variations in the temperature of the base plate and variations in the shape of the bevel during the Hot-Gas Welding process on the tensile strength of HDPE sheet welded joints, to determine the conditions of the interaction between variations in the temperature of the base plate and variations in the shape of the bevel during the Hot-Gas Welding process. HDPE sheet welded joints that produce maximum tensile strength values. In this study, two independent variables were used, namely the base plate temperature (30,70,110,150 C), variations in bevel shape (V, X, U) and three controlled variables which included HDPE plastic material with a thickness of 5mm, using added filler material in the form of HDPE plastic with a diameter of 4 mm and a hot gun airflow heating temperature of 250℃. The tensile test standard uses the ASTM D 638-03 standard and for data processing is done by DOE factorial, as supporting data macrostructural photos of each weld joint are carried out. The results showed that the maximum tensile strength of HDPE welded joints was obtained at the temperature of the base plate of 150°C and the V bevel shape with a value of 18.46 MPa or 84.22% of the parent material
焊接在此时发展迅速，无论是金属材料还是非金属材料，塑料焊接采用的方法之一是热气焊。塑料是一种很难焊接的材料，因为它的导热性很低。现有塑料焊接接头的力学性能质量与未焊接的塑料物体的强度不接近。本研究的目的是确定热气焊过程中基板温度变化和坡口形状变化对HDPE薄板焊接接头抗拉强度的影响，确定热气焊过程中基板温度变化和坡口形状变化之间相互作用的条件。产生最大抗拉强度值的HDPE片材焊接接头。本研究采用两个自变量，分别为基片温度(30、70、110、150℃)、坡口形状变化(V、X、U)和三个控制变量，分别为厚度为5mm的HDPE塑料材料、添加直径为4mm的HDPE塑料填充材料、热枪气流加热温度为250℃。拉伸试验标准采用ASTM D 638-03标准，数据处理由DOE因子完成，作为支持数据，进行每个焊接接头的宏观结构照片。结果表明:HDPE焊接接头在底板温度为150℃、V形坡口时抗拉强度达到最大值，为母材的18.46 MPa，为母材的84.22%
{"title":"ANALISIS TEMPERATUR PELAT LANDASAN HOT-GAS WELDING DAN BENTUK BEVEL TERHADAP KEKUATAN TARIK LASAN HDPE","authors":"Kris Witono, Agus Setiawan, S. Susilo","doi":"10.33795/jetm.v5i02.137","DOIUrl":"https://doi.org/10.33795/jetm.v5i02.137","url":null,"abstract":"Welding has developed rapidly at this time, both for metallic and non-metallic materials, one of the methods used for plastic welding is Hot-Gas Welding. Plastic is a very difficult material to weld due to its low thermal conductivity. The quality of the mechanical properties of the existing plastic welded joints is not close to the strength of plastic objects without welding. The purpose of this study was to determine the effect of variations in the temperature of the base plate and variations in the shape of the bevel during the Hot-Gas Welding process on the tensile strength of HDPE sheet welded joints, to determine the conditions of the interaction between variations in the temperature of the base plate and variations in the shape of the bevel during the Hot-Gas Welding process. HDPE sheet welded joints that produce maximum tensile strength values. In this study, two independent variables were used, namely the base plate temperature (30,70,110,150 C), variations in bevel shape (V, X, U) and three controlled variables which included HDPE plastic material with a thickness of 5mm, using added filler material in the form of HDPE plastic with a diameter of 4 mm and a hot gun airflow heating temperature of 250℃. The tensile test standard uses the ASTM D 638-03 standard and for data processing is done by DOE factorial, as supporting data macrostructural photos of each weld joint are carried out. The results showed that the maximum tensile strength of HDPE welded joints was obtained at the temperature of the base plate of 150°C and the V bevel shape with a value of 18.46 MPa or 84.22% of the parent material","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75228458","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}
M. Anggara, Ajie Prana Mesa, Bernadus Crisanto Putra Mbulu
Plastic waste is an environmental problem that is hotly discussed in the era of globalization. Almost all people are starting to realize the dangers caused by environmental damage. The purpose of this study was to determine the properties of fuel oil resulting from the pyrolysis process for LDPE (Low Density Polyethylene) and PET (Polyethylene Terephthalate) plastics. The research method used is through experiments with the Pyrolysis process. In managing LDPE and PET plastic waste, namely the pyrolysis technique which can produce fuel oil. The types of plastic used in this study were LDPE plastic bags, garbage bags and PET juice plastic cups and mica plastic. This research was carried out using a temperature of 300 0C with a time of 1 hour and a mass of 1 kg of plastic to get different density results. The results showed that the plastic bag had an average value (density) of 0.929 g/mL, (viscosity) with an average of 0.565 m2/s and (Flash point) 410C, but the trash bag had an average (density) of 0.909 g/mL, (viscosity) with an average of 0.43 m2/s and (Flash point) 560C, then on plastic juice cups it has an average value (density) of 0.884 g/mL (viscosity) with an average of 0.575 m2/ s and (Flash point ) 350C, while mica plastic has an average density value of 1.074g/mL, (viscosity) with an average of 0.575 m2/s and (Flash point ) 420C. The results of pyrolysis of LDPE and PET plastic types are good fuels to use, namely pyrolysis fuel for PET plastic juice cups closer to premium, while the LDPE plastic type in the plastic bag category tends to be close to premium
塑料垃圾是全球化时代人们热议的环境问题。几乎所有的人都开始意识到环境破坏所造成的危害。本研究的目的是确定LDPE(低密度聚乙烯)和PET(聚对苯二甲酸乙二醇酯)塑料热解过程中产生的燃料油的性能。采用的研究方法是通过热解过程的实验。在处理LDPE和PET塑料废弃物，即热解技术，可以产生燃料油。本研究使用的塑料种类有LDPE塑料袋、垃圾袋、PET果汁塑料杯和云母塑料。本研究采用温度300℃，时间1小时，质量1 kg的塑料进行，得到不同密度的结果。结果表明,塑料袋平均价值(密度)的0.929 g / mL,(粘度)平均为0.565平方米/ s和(闪点)410 c,但是垃圾袋平均0.909克/毫升(密度),(粘度)平均为0.43平方米/ s和560 c(闪点),然后在塑料果汁杯有一个平均值(密度)的0.884 g / mL(粘度)平均为0.575平方米/ s和(闪点)350 c,而云母塑料平均密度值为1.074 g / mL,(粘度)平均0.575 m2/s，(闪点)420C。LDPE和PET塑料类型的热解结果均为较好的燃料使用，即PET塑料果汁杯的热解燃料更接近优质，而塑料袋类别中的LDPE塑料类型则倾向于接近优质
{"title":"ANALISIS PROPERTI BAHAN BAKAR MINYAK DARI PLASTIK LDPE (LOW DENSITY POLYETHYLENE) DAN PET (POLYETHYLENE TEREPHTHALATE) MENGGUNAKAN PROSES PIROLISIS","authors":"M. Anggara, Ajie Prana Mesa, Bernadus Crisanto Putra Mbulu","doi":"10.33795/jetm.v5i02.138","DOIUrl":"https://doi.org/10.33795/jetm.v5i02.138","url":null,"abstract":"Plastic waste is an environmental problem that is hotly discussed in the era of globalization. Almost all people are starting to realize the dangers caused by environmental damage. The purpose of this study was to determine the properties of fuel oil resulting from the pyrolysis process for LDPE (Low Density Polyethylene) and PET (Polyethylene Terephthalate) plastics. The research method used is through experiments with the Pyrolysis process. In managing LDPE and PET plastic waste, namely the pyrolysis technique which can produce fuel oil. The types of plastic used in this study were LDPE plastic bags, garbage bags and PET juice plastic cups and mica plastic. This research was carried out using a temperature of 300 0C with a time of 1 hour and a mass of 1 kg of plastic to get different density results. The results showed that the plastic bag had an average value (density) of 0.929 g/mL, (viscosity) with an average of 0.565 m2/s and (Flash point) 410C, but the trash bag had an average (density) of 0.909 g/mL, (viscosity) with an average of 0.43 m2/s and (Flash point) 560C, then on plastic juice cups it has an average value (density) of 0.884 g/mL (viscosity) with an average of 0.575 m2/ s and (Flash point ) 350C, while mica plastic has an average density value of 1.074g/mL, (viscosity) with an average of 0.575 m2/s and (Flash point ) 420C. The results of pyrolysis of LDPE and PET plastic types are good fuels to use, namely pyrolysis fuel for PET plastic juice cups closer to premium, while the LDPE plastic type in the plastic bag category tends to be close to premium","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77698460","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}
Fiber Metal Laminates (FML) is a classification of metallic materials consisting of several thin layers of metal combined with composite materials. The constraint of FML is the weak bond between the layer material and the core composite. The weak bond between the layer material and the core composite can be influenced by several things, including the absence of an interlock system between the layer material and the core composite so that the strength of the FML composite decreases. In this study, a study was conducted on the shear strength of FML composites using the independent variables of surface roughness and fiber angle orientation. The highest shear strength in FML composite with fiber angle orientation of 45/45° and with a surface roughness value of 2.128 m with a shear strength value of 2.7 MPa
{"title":"Analysis of Fiber Metal Composite Shear Strength Using Independent Variables of Fiber Angle Orientation and Metal Surface Roughness","authors":"H. Firmansyah, W. Wirawan, Moh. Nasir Hariyanto","doi":"10.33795/jetm.v5i02.136","DOIUrl":"https://doi.org/10.33795/jetm.v5i02.136","url":null,"abstract":"Fiber Metal Laminates (FML) is a classification of metallic materials consisting of several thin layers of metal combined with composite materials. The constraint of FML is the weak bond between the layer material and the core composite. The weak bond between the layer material and the core composite can be influenced by several things, including the absence of an interlock system between the layer material and the core composite so that the strength of the FML composite decreases. In this study, a study was conducted on the shear strength of FML composites using the independent variables of surface roughness and fiber angle orientation. The highest shear strength in FML composite with fiber angle orientation of 45/45° and with a surface roughness value of 2.128 m with a shear strength value of 2.7 MPa","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"265 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72432002","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}
Perkembangan teknologi komposit saat ini banyak mengarah pada komposit alam/ Nature Composites (NACO). Komposit alam memiliki beberapa keunggulan, antara lain: dapat didaur ulang atau ramah lingkungan, memiliki sifat mekanik yang spesifik, ringan, memiliki sifat isolator panas dan suara, tahan korosi, serta dapat dijadikan sebagai penghambat listrik yang baik selain itu juga ramah lingkungan. Salah satu komposit alam yang saat ini sedang banyak dikembangkan dan diteliti yaitu komposit serat kulit waru. Komposit ini merupakan salah satu inovasi teknologi material maju yang memanfaatkan serat alam sebagai material reinforcing phase yang dikombinasikan dengan resin sintetis sebagai material matrix phase. Beberapa penelitian menunjukkan komposit serat kulit waru memiliki kekuatan tarik, impak dan bending yang cukup baik, Berdasarkan hasil penelitian komposit serat kulit pohon waru, maka dapat dilihat bahwa komposit ini memiliki potensi yang cukup baik dari segi sifat mekaniknya, sehingga dapat diimplementasikan pada pesawat nirawak dengan spesifikasi, antara lain: ringan, kaku, tidak mudah patah, tangguh serta tahan terhadap getaran dan korosi. Tujuan dari penelitian ini untuk mengetahui pengaruh metode proses manufaktur terhadap sifat mekanik kekuatan bending komposit serat kulit pohon waru sebagai material terbarukan untuk pesawat nirawak. Dengan 3 macam metode manufaktur yaitu, Hand lay up, Press, dan Vacuum infusion resin, Selain dilakukan pengujian bending, dalam penelitian ini juga dilakukan foto mikro dan foto patahan untuk mengetahui bagaimana struktur dari bahan uji yang sudah diuji dengan metode Bending tersebut. Hasil pengujian bending komposit serat kulit pohon waru tersebut, kekuatan bending yang baik terdapat pada proses manufaktur Press. Berdasarkan hasil foto patahan dan foto mikro komposit serat kulit pohon waru menunjukan ikatan antara resin bisphenol LP-1Q pada metode manufaktur Vacuum infusion resin memiliki ikatan paling baik dan resin dapat menutup dengan sempurna dan mengisi serat kulit pohon waru secara keseluruhan
{"title":"PENGARUH METODE PROSES MANUFAKTUR TERHADAP KEKUATAN BENDING KOMPOSIT SERAT KULIT POHON WARU SEBAGAI MATERIAL TERBARUKAN UNTUK PESAWAT NIRAWAK","authors":"A. Herman, Dadan Hermawan, Arief Rizki Fadhillah","doi":"10.33795/jetm.v5i02.131","DOIUrl":"https://doi.org/10.33795/jetm.v5i02.131","url":null,"abstract":"Perkembangan teknologi komposit saat ini banyak mengarah pada komposit alam/ Nature Composites (NACO). Komposit alam memiliki beberapa keunggulan, antara lain: dapat didaur ulang atau ramah lingkungan, memiliki sifat mekanik yang spesifik, ringan, memiliki sifat isolator panas dan suara, tahan korosi, serta dapat dijadikan sebagai penghambat listrik yang baik selain itu juga ramah lingkungan. Salah satu komposit alam yang saat ini sedang banyak dikembangkan dan diteliti yaitu komposit serat kulit waru. Komposit ini merupakan salah satu inovasi teknologi material maju yang memanfaatkan serat alam sebagai material reinforcing phase yang dikombinasikan dengan resin sintetis sebagai material matrix phase. Beberapa penelitian menunjukkan komposit serat kulit waru memiliki kekuatan tarik, impak dan bending yang cukup baik, Berdasarkan hasil penelitian komposit serat kulit pohon waru, maka dapat dilihat bahwa komposit ini memiliki potensi yang cukup baik dari segi sifat mekaniknya, sehingga dapat diimplementasikan pada pesawat nirawak dengan spesifikasi, antara lain: ringan, kaku, tidak mudah patah, tangguh serta tahan terhadap getaran dan korosi. Tujuan dari penelitian ini untuk mengetahui pengaruh metode proses manufaktur terhadap sifat mekanik kekuatan bending komposit serat kulit pohon waru sebagai material terbarukan untuk pesawat nirawak. Dengan 3 macam metode manufaktur yaitu, Hand lay up, Press, dan Vacuum infusion resin, Selain dilakukan pengujian bending, dalam penelitian ini juga dilakukan foto mikro dan foto patahan untuk mengetahui bagaimana struktur dari bahan uji yang sudah diuji dengan metode Bending tersebut. Hasil pengujian bending komposit serat kulit pohon waru tersebut, kekuatan bending yang baik terdapat pada proses manufaktur Press. Berdasarkan hasil foto patahan dan foto mikro komposit serat kulit pohon waru menunjukan ikatan antara resin bisphenol LP-1Q pada metode manufaktur Vacuum infusion resin memiliki ikatan paling baik dan resin dapat menutup dengan sempurna dan mengisi serat kulit pohon waru secara keseluruhan","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84503919","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 : 2022-11-30DOI: 10.30588/jeemm.v6i2.1239
Suhendra Suhendra, Winda Apriani, Irma Fahrizal
Coconut coir can be processed into cocopeat and coco fiber. In the chopping process, the chopping mechanism has a critical role that will determine the results of the chopping off of coconut coir. Based on these conditions, in this study, the development of a chopping mechanism was carried out by modifying the chopper blade to improve the chopper of coconut coir. The purpose of this study was to modify the coconut coir chopper blade, perform performance tests and calculate the increased performance after modification. Modification of the chopper mechanism on the coconut coir chopper machine is done by replacing the type of chopper blade with an iron rod with a diameter of 4 mm which is sharpened at the end. The test data includes data on the capacity of coconut coir chopping, the percentage of cocopeat, the percentage of coco fiber, the percentage of unprocessed coconut coir, the percentage of material loss, and the increase in performance after modification. The modified coconut coir chopper mechanism has specifications of 240 mm long, 100 mm diameter, 39 blades, and ± 14 mm high. The test was carried out at a rotary speed of the chopper mechanism of 720 rpm. Based on the test result, the capacity of chopping coconut coir using a modified coconut coir chopper machine is 7,93 kg/hour, producing 45,57% cocopeat, 36,15% coco fiber, 13,15% coconut coir unprocessed and the loss reached 5,13%. Modifications on the chopper blade are proven to increase the performance of the coconut coir chopper machine by 297%.
{"title":"Uji Performansi pada Mesin Pengurai Sabut Kelapa dengan Modifikasi Pisau Pengurai","authors":"Suhendra Suhendra, Winda Apriani, Irma Fahrizal","doi":"10.30588/jeemm.v6i2.1239","DOIUrl":"https://doi.org/10.30588/jeemm.v6i2.1239","url":null,"abstract":"Coconut coir can be processed into cocopeat and coco fiber. In the chopping process, the chopping mechanism has a critical role that will determine the results of the chopping off of coconut coir. Based on these conditions, in this study, the development of a chopping mechanism was carried out by modifying the chopper blade to improve the chopper of coconut coir. The purpose of this study was to modify the coconut coir chopper blade, perform performance tests and calculate the increased performance after modification. Modification of the chopper mechanism on the coconut coir chopper machine is done by replacing the type of chopper blade with an iron rod with a diameter of 4 mm which is sharpened at the end. The test data includes data on the capacity of coconut coir chopping, the percentage of cocopeat, the percentage of coco fiber, the percentage of unprocessed coconut coir, the percentage of material loss, and the increase in performance after modification. The modified coconut coir chopper mechanism has specifications of 240 mm long, 100 mm diameter, 39 blades, and ± 14 mm high. The test was carried out at a rotary speed of the chopper mechanism of 720 rpm. Based on the test result, the capacity of chopping coconut coir using a modified coconut coir chopper machine is 7,93 kg/hour, producing 45,57% cocopeat, 36,15% coco fiber, 13,15% coconut coir unprocessed and the loss reached 5,13%. Modifications on the chopper blade are proven to increase the performance of the coconut coir chopper machine by 297%.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"179 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73164606","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 : 2022-11-30DOI: 10.30588/jeemm.v6i2.1276
Sutiyoko Sutiyoko, F. Madani
Bentonit merupakan salah satu bahan utama dalam cetakan green sand dan berpengaruh pada karakteristik cetakan serta hasil benda cor. Kadar bentonit mempengaruhi permeabilitas, kompaktibilitas, kekuatan geser, dan kekuatan tekan cetakan green sand. Tujuan penelitian ini adalah untuk mengetahui perubahan karakteristik cetakan greensand akibat perubahan kadar bentonit serta pengaruhnya terhadap cacat inklusi pasir. Variasi kadar bentonit sebesar 3,5 % dan 4,3 % dari berat total bahan cetakan. Pengujian cetakan mencakup uji mampu bentuk, kekuatan tekan, dan kadar air. Uji coba pada benda cor disc brake mobil untuk menganalisa pengaruhnya terhadap cacat cor yang terjadi. Hasil pengujian karakteristik cetakan green sand menunjukkan bahwa kadar bentonit 3,5 % memiliki mampu tekan cetakan 13,7±0,4 N/cm2 (standar : 14 – 18 N/cm2) dan mampu bentuk cetakan 34±5,1 % (standar: 33 – 58 %). Kedua karakteristik ini masih berada di bawah standar cetakan green sand. Kadar bentonit 4,3 % memiliki karakteristik cetakan yang sesuai dengan standar cetakan green sand untuk semua karakteristik cetakan yang diuji. Hasil pengecoran besi cor nodular menunjukkan terjadinya cacat inklusi pasir pada benda cor. Kekurangan kadar bentonit menurunkan mampu bentuk cetakan sehingga cetakan mudah rontok ketika cairan logam masuk. Rontoknya cetakan ini dapat membawa pasir sehingga terjadi inklusi pasir pada benda cor. Demikian halnya dengan mampu tekan cetakan yang di bawah standar. Kekuatan tekan rendah memungkinkan cetakan erosi ketika terkena tekanan cairan logam.
{"title":"Perubahan karakteristik cetakan green sand dan cacat inklusi pasir akibat perubahan kadar bentonit","authors":"Sutiyoko Sutiyoko, F. Madani","doi":"10.30588/jeemm.v6i2.1276","DOIUrl":"https://doi.org/10.30588/jeemm.v6i2.1276","url":null,"abstract":"Bentonit merupakan salah satu bahan utama dalam cetakan green sand dan berpengaruh pada karakteristik cetakan serta hasil benda cor. Kadar bentonit mempengaruhi permeabilitas, kompaktibilitas, kekuatan geser, dan kekuatan tekan cetakan green sand. Tujuan penelitian ini adalah untuk mengetahui perubahan karakteristik cetakan greensand akibat perubahan kadar bentonit serta pengaruhnya terhadap cacat inklusi pasir. Variasi kadar bentonit sebesar 3,5 % dan 4,3 % dari berat total bahan cetakan. Pengujian cetakan mencakup uji mampu bentuk, kekuatan tekan, dan kadar air. Uji coba pada benda cor disc brake mobil untuk menganalisa pengaruhnya terhadap cacat cor yang terjadi. Hasil pengujian karakteristik cetakan green sand menunjukkan bahwa kadar bentonit 3,5 % memiliki mampu tekan cetakan 13,7±0,4 N/cm2 (standar : 14 – 18 N/cm2) dan mampu bentuk cetakan 34±5,1 % (standar: 33 – 58 %). Kedua karakteristik ini masih berada di bawah standar cetakan green sand. Kadar bentonit 4,3 % memiliki karakteristik cetakan yang sesuai dengan standar cetakan green sand untuk semua karakteristik cetakan yang diuji. Hasil pengecoran besi cor nodular menunjukkan terjadinya cacat inklusi pasir pada benda cor. Kekurangan kadar bentonit menurunkan mampu bentuk cetakan sehingga cetakan mudah rontok ketika cairan logam masuk. Rontoknya cetakan ini dapat membawa pasir sehingga terjadi inklusi pasir pada benda cor. Demikian halnya dengan mampu tekan cetakan yang di bawah standar. Kekuatan tekan rendah memungkinkan cetakan erosi ketika terkena tekanan cairan logam.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79118215","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 : 2022-11-29DOI: 10.30588/jeemm.v6i2.1201
Ismail Furqani, R. K. Arief, Muchlisinalahuddin Muchlisinalahuddin
Indonesia is one of the largest rice producers in the world. technological developments created a rice threshing machine to facilitate the work of farmers. In the manufacture of the engine frame, of course, must be calculated accurately. Here the SolidWorks 2019 application is used to make it easier to analyze the strength of the rice threshing machine frame. In the simulation of the strength of the frame using SolidWorks 2019, the type of material used is ASTM A36 Steel, and loading is carried out on the frame with a load of 1 of 50 kg and a load of 2 of 30 kg. The simulation results get the largest von misses stress value at load 2 of 79,183,792,000 N /m2 with a displacement of 0.657 mm. The safety factor values obtained from the simulation results are 3 and 2,635. Based on Dobrovolsky in the book "machine element" the safety factor range for dynamic loads is 2.0 - 3.0, then the strength of the frame of the rice thresher machine is able to support the performance of the machine during use.
{"title":"Analisis Kekuatan Rangka Mesin Perontok Padi Menggunakan Solidworks 2019","authors":"Ismail Furqani, R. K. Arief, Muchlisinalahuddin Muchlisinalahuddin","doi":"10.30588/jeemm.v6i2.1201","DOIUrl":"https://doi.org/10.30588/jeemm.v6i2.1201","url":null,"abstract":"Indonesia is one of the largest rice producers in the world. technological developments created a rice threshing machine to facilitate the work of farmers. In the manufacture of the engine frame, of course, must be calculated accurately. Here the SolidWorks 2019 application is used to make it easier to analyze the strength of the rice threshing machine frame. In the simulation of the strength of the frame using SolidWorks 2019, the type of material used is ASTM A36 Steel, and loading is carried out on the frame with a load of 1 of 50 kg and a load of 2 of 30 kg. The simulation results get the largest von misses stress value at load 2 of 79,183,792,000 N /m2 with a displacement of 0.657 mm. The safety factor values obtained from the simulation results are 3 and 2,635. Based on Dobrovolsky in the book \"machine element\" the safety factor range for dynamic loads is 2.0 - 3.0, then the strength of the frame of the rice thresher machine is able to support the performance of the machine during use.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76858626","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 : 2022-11-26DOI: 10.30588/jeemm.v6i2.1235
P. Santoso, Iklas Sanubary, Diah Mahmuda
The purpose of this study was to describe the process and results of making cocopeat dryers with a hybrid system based on solar panels. This research was conducted with a tool development method consisting of five steps, namely literature study, design, tool and material preparation, manufacturing, and functional tests. The study results were (1) the process of making cocopeat dryers with a hybrid system based on the solar panel was the calculation of solar panel components, frame making, coating of frames with the casing, assembling of electronic components, and functional tests. (2) The cocopeat dryer with a hybrid system based on solar panels that have been made has dimensions of 120 cm in length, 60 cm in width, and 130 cm in height—equipped with a 100 Wp solar panel, a 12 V 65Ah dry battery, a 600 W inverter, three 15W halogen lamps, and a 22W fan. (3) The functional test results show that the average temperature inside the dryer is 52.84oC, 8.56oC higher than the temperature outside the tool. The average humidity inside the dryer is 23.4%, 17.2% lower than the humidity outside the appliance.
本研究的目的是描述以太阳能板为基础的混合系统制造椰子干燥机的过程和结果。本研究采用的工具开发方法包括五个步骤，即文献研究、设计、工具和材料制备、制造和功能测试。研究结果如下:(1)基于太阳能电池板的混合动力干燥机制造过程为太阳能电池板组件计算、框架制作、框架外壳涂装、电子元件装配和功能测试。(2)已制成的以太阳能板为基础的混合系统的干衣机，长120厘米，宽60厘米，高130厘米，配备100 Wp太阳能板，12 V 65Ah干电池，600 W逆变器，3个15W卤素灯和一个22W风扇。(3)功能测试结果表明，干燥器内部平均温度为52.84oC，比工具外部温度高8.56oC。烘干机内部的平均湿度为23.4%，比烘干机外部的平均湿度低17.2%。
{"title":"Pembuatan Alat Pengering Cocopeat dengan Sistem Hybrid Berbasis Panel Surya","authors":"P. Santoso, Iklas Sanubary, Diah Mahmuda","doi":"10.30588/jeemm.v6i2.1235","DOIUrl":"https://doi.org/10.30588/jeemm.v6i2.1235","url":null,"abstract":"The purpose of this study was to describe the process and results of making cocopeat dryers with a hybrid system based on solar panels. This research was conducted with a tool development method consisting of five steps, namely literature study, design, tool and material preparation, manufacturing, and functional tests. The study results were (1) the process of making cocopeat dryers with a hybrid system based on the solar panel was the calculation of solar panel components, frame making, coating of frames with the casing, assembling of electronic components, and functional tests. (2) The cocopeat dryer with a hybrid system based on solar panels that have been made has dimensions of 120 cm in length, 60 cm in width, and 130 cm in height—equipped with a 100 Wp solar panel, a 12 V 65Ah dry battery, a 600 W inverter, three 15W halogen lamps, and a 22W fan. (3) The functional test results show that the average temperature inside the dryer is 52.84oC, 8.56oC higher than the temperature outside the tool. The average humidity inside the dryer is 23.4%, 17.2% lower than the humidity outside the appliance. ","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87810436","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：