The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
Cheng Ku Teo - One of the best experts on this subject based on the ideXlab platform.
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Design and fabrication of a vacuum Forming Machine
'Nanyang Technological University', 2020Co-Authors: Cheng Ku TeoAbstract:This report covers the design and fabrication of a vacuum Forming Machine which allows the dentist to make transparent retainers, indirect bonding trays, bleaching trays, or temporary crowns for the patient. The report mentions the different methods to straighten the patient’s teeth and the benefits of using the vacuum Forming Machine comparing to traditional means. The report also covers the working principle of the existing vacuum Forming Machine using heat gun. It discusses the limitation of the existing vacuum Forming Machine and how the modification make to the existing vacuum Forming Machine to tackle the limitation. The report includes the design of the inverted cone diffuser, the experimental data of using the diffuser, and the findings from the experiment data. The report also includes the conceptual phase, engineering drawing and costing of the design of vacuum Forming Machine using heating coils. Throughout the designing process of the product, various methods, and techniques such as, decision matrix and S.M.A.R.T, are used in making several decisions that lead to the final design of vacuum Forming Machine using heating coils.Bachelor of Engineering (Mechanical Engineering
Hwee Mi Ang - One of the best experts on this subject based on the ideXlab platform.
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Design and fabrication of a vacuum Forming Machine
2019Co-Authors: Hwee Mi AngAbstract:Dental aligners are a form of orthodontic device that aims to be a substitute for traditional wire braces. This report will detail the design and fabrication of a vacuum Forming Machine to be used for the fabrication of such aligners. The objective of the project is to produce a vacuum Forming Machine that is equivalent or even better than commercially available Machines, while being priced affordably. This report covers the research done on existing designs on the market, their limitations and the design process used to create the vacuum former for this project. The final design of the vacuum former produced for this project consists of a stationary base with a vacuum chamber in which a mould is placed. Next, the thermoplastic sheet is placed on the top of this base, covering the vacuum chamber. A sheet metal plate is then placed on the sheet and then clamped at the four ends. A heat gun which acts as the heating element is placed in a holder capable of vertically and is used to heat the plastic sheet. Once deformation in the plastic sheet is of an acceptable level, a vacuum pump is turned on to form the sheet over the mould. Variables such as heating temperature and heating time are used in experiments to obtain dental aligners of varying quality. Subsequently, the values are analyzed to find the range of values capable of producing the aligner with the best finish.Bachelor of Engineering (Mechanical Engineering
Prabandono Ayu - One of the best experts on this subject based on the ideXlab platform.
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Manufaktur dan Uji Kinerja Proses Vacuum Forming Untuk Bahan Polymethyl Methacrylate (PMMA)
JMPM : Jurnal Material dan Proses Manufaktur, 2020Co-Authors: Permana, Cepi Rahmatullah, Udiyantoro Cahyo, Prabandono AyuAbstract:AbstrakMesin pembuat kemasan yang sederhana dan murah dengan kinerja yang memadai diperlukan untuk meningkatkan nilai ekonomis produk industri rumah tangga (UKM). Penelitian ini bertujuan untuk membuat dan menguji kinerja mesin vakum Forming pada bahan Polymethylmetacrylate (PMMA).Tahapan dalam pembuatan mesin ini adalah studi rancangan, manufaktur bagian mesin, cetakan, perakitan dan uji coba kinerja. Cetakan dibuat dari bahan kayu jati berukuran 140 mm x 210 mm x 15 mm. Pengujian kinerja mesin dilakukan dengan memanaskan lembaran plastik PMMA tebal 0.25 mm pada variasi waktu pemanasan 15, 20 dan 25 detik dan waktu vakum 5, 10 dan 15 detik, menggunakan pemanas 100 watt dan tekanan vakum maksimum 12 kPa. Dimensi dan geometri produk dibandingkan dengan cetakan dan dievaluasi dengan pengukuran linier serta pengamatan visual.Hasil pengujian menunjukkan bahwa kombinasi waktu pemanasan 15 detik dan waktu vakum 5 detik menghasilkan produk dengan radius yang besar pada bagian dasar. Kombinasi waktu pemanasan 20 detik dan waktu vakum 10 detik dapat memperkecil ukuran radius. Hasil cetakan yang mendekati bentuk cetakan diperoleh dengan parameter suhu pemanasan 105 ℃, waktu pemanasan 25 detik dan waktu vakum 15 detik.AbstractA simple and inexpensive packaging Machine with adequate performance is needed to increase economic added value of the smal scale industries. This study aims to manufacture and to evaluate the performance of customized vacuum Forming Machine on Polymethylmetacrylate (PMMA)l. Manufacturing of components and molds, assembly and performance testing have been carried out to build the Machine. The mold was made of teak wood with the dimension of 140 mm x 210 mm x 15 mm. Machine performance testing was done by heating a 0.25 mm thick PMMA sheet with heating time variation of 15, 20 and 25 second and vacuum time of 5, 10 and 15 second, respectively. The heating power was 100 watts and the maximum vacuum pressure was 12 kPa. Product quality were compared with mold by linear measurements and visual observations.The processing parameter of 15 second heating time and 5 second vacuum time produced a specimen with a large radius at the bottom. The combination of 20 second heating time and 10 second vacuum time reduced the size of the radius. The best product can be obtained with a heating temperature of 105 ℃, heating time of 25 second and a vacuum time of 15 second.
Permana, Cepi Rahmatullah - One of the best experts on this subject based on the ideXlab platform.
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Manufaktur dan Uji Kinerja Proses Vacuum Forming Untuk Bahan Polymethyl Methacrylate (PMMA)
JMPM : Jurnal Material dan Proses Manufaktur, 2020Co-Authors: Permana, Cepi Rahmatullah, Udiyantoro Cahyo, Prabandono AyuAbstract:AbstrakMesin pembuat kemasan yang sederhana dan murah dengan kinerja yang memadai diperlukan untuk meningkatkan nilai ekonomis produk industri rumah tangga (UKM). Penelitian ini bertujuan untuk membuat dan menguji kinerja mesin vakum Forming pada bahan Polymethylmetacrylate (PMMA).Tahapan dalam pembuatan mesin ini adalah studi rancangan, manufaktur bagian mesin, cetakan, perakitan dan uji coba kinerja. Cetakan dibuat dari bahan kayu jati berukuran 140 mm x 210 mm x 15 mm. Pengujian kinerja mesin dilakukan dengan memanaskan lembaran plastik PMMA tebal 0.25 mm pada variasi waktu pemanasan 15, 20 dan 25 detik dan waktu vakum 5, 10 dan 15 detik, menggunakan pemanas 100 watt dan tekanan vakum maksimum 12 kPa. Dimensi dan geometri produk dibandingkan dengan cetakan dan dievaluasi dengan pengukuran linier serta pengamatan visual.Hasil pengujian menunjukkan bahwa kombinasi waktu pemanasan 15 detik dan waktu vakum 5 detik menghasilkan produk dengan radius yang besar pada bagian dasar. Kombinasi waktu pemanasan 20 detik dan waktu vakum 10 detik dapat memperkecil ukuran radius. Hasil cetakan yang mendekati bentuk cetakan diperoleh dengan parameter suhu pemanasan 105 ℃, waktu pemanasan 25 detik dan waktu vakum 15 detik.AbstractA simple and inexpensive packaging Machine with adequate performance is needed to increase economic added value of the smal scale industries. This study aims to manufacture and to evaluate the performance of customized vacuum Forming Machine on Polymethylmetacrylate (PMMA)l. Manufacturing of components and molds, assembly and performance testing have been carried out to build the Machine. The mold was made of teak wood with the dimension of 140 mm x 210 mm x 15 mm. Machine performance testing was done by heating a 0.25 mm thick PMMA sheet with heating time variation of 15, 20 and 25 second and vacuum time of 5, 10 and 15 second, respectively. The heating power was 100 watts and the maximum vacuum pressure was 12 kPa. Product quality were compared with mold by linear measurements and visual observations.The processing parameter of 15 second heating time and 5 second vacuum time produced a specimen with a large radius at the bottom. The combination of 20 second heating time and 10 second vacuum time reduced the size of the radius. The best product can be obtained with a heating temperature of 105 ℃, heating time of 25 second and a vacuum time of 15 second.
Udiyantoro Cahyo - One of the best experts on this subject based on the ideXlab platform.
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Manufaktur dan Uji Kinerja Proses Vacuum Forming Untuk Bahan Polymethyl Methacrylate (PMMA)
JMPM : Jurnal Material dan Proses Manufaktur, 2020Co-Authors: Permana, Cepi Rahmatullah, Udiyantoro Cahyo, Prabandono AyuAbstract:AbstrakMesin pembuat kemasan yang sederhana dan murah dengan kinerja yang memadai diperlukan untuk meningkatkan nilai ekonomis produk industri rumah tangga (UKM). Penelitian ini bertujuan untuk membuat dan menguji kinerja mesin vakum Forming pada bahan Polymethylmetacrylate (PMMA).Tahapan dalam pembuatan mesin ini adalah studi rancangan, manufaktur bagian mesin, cetakan, perakitan dan uji coba kinerja. Cetakan dibuat dari bahan kayu jati berukuran 140 mm x 210 mm x 15 mm. Pengujian kinerja mesin dilakukan dengan memanaskan lembaran plastik PMMA tebal 0.25 mm pada variasi waktu pemanasan 15, 20 dan 25 detik dan waktu vakum 5, 10 dan 15 detik, menggunakan pemanas 100 watt dan tekanan vakum maksimum 12 kPa. Dimensi dan geometri produk dibandingkan dengan cetakan dan dievaluasi dengan pengukuran linier serta pengamatan visual.Hasil pengujian menunjukkan bahwa kombinasi waktu pemanasan 15 detik dan waktu vakum 5 detik menghasilkan produk dengan radius yang besar pada bagian dasar. Kombinasi waktu pemanasan 20 detik dan waktu vakum 10 detik dapat memperkecil ukuran radius. Hasil cetakan yang mendekati bentuk cetakan diperoleh dengan parameter suhu pemanasan 105 ℃, waktu pemanasan 25 detik dan waktu vakum 15 detik.AbstractA simple and inexpensive packaging Machine with adequate performance is needed to increase economic added value of the smal scale industries. This study aims to manufacture and to evaluate the performance of customized vacuum Forming Machine on Polymethylmetacrylate (PMMA)l. Manufacturing of components and molds, assembly and performance testing have been carried out to build the Machine. The mold was made of teak wood with the dimension of 140 mm x 210 mm x 15 mm. Machine performance testing was done by heating a 0.25 mm thick PMMA sheet with heating time variation of 15, 20 and 25 second and vacuum time of 5, 10 and 15 second, respectively. The heating power was 100 watts and the maximum vacuum pressure was 12 kPa. Product quality were compared with mold by linear measurements and visual observations.The processing parameter of 15 second heating time and 5 second vacuum time produced a specimen with a large radius at the bottom. The combination of 20 second heating time and 10 second vacuum time reduced the size of the radius. The best product can be obtained with a heating temperature of 105 ℃, heating time of 25 second and a vacuum time of 15 second.
