Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Machine-shop practice"”.
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Tool and chip temperatures in machine shop practice
Thesis: B.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1924
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Development of a performance test for senior high school machine shop
To view the abstract, please see the full text of the document.
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Amalan pengurusan keselamatan bengkel kemahiran hidup (KHB) Sekolah Menengah Harian Daerah Batu Pahat
Kajian ini dijalankan untuk mengkaji sejauhmanakah persepsi pelajar terhadap amalan pengurusan keselamatan dari aspek keselamatan alatan dan bahan, diri dan rakan serta keselamatan am di bengkel Kemahiran Hidup sekolah menengah harian daerah Batu Pahat. Kajian berbentuk kuantitatif dilaksanakan di …
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Effects of chromium powder mixed in electrical discharge machining of AISI D2 hardened steels
Nowadays, electrical discharge machining (EDM) is the non-conventional method that has been used extensively in machining hard material that is commonly used in mold and die industry but the limitations of EDM will cause lower productivity and poor surface quality. EDM becomes most apparent by …
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New technique for the development of open CNC cell controller based on ISO 14649 and ISO 6983
… interface models interpretation, 3D simulation, machine motion control, live video monitoring and automatic document generation modules. The system has also been validated through manufacturing of case study components. Corresponding experimental results verified the proposed technique with …
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Pembangunan dan keberkesanan modul perancahan berstruktur dalam pembelajaran berasaskan projek terhadap pengetahuan dan kemahiran bagi projek mesin larik pelajar Politeknik
Tujuan kajian adalah untuk membangun dan menilai keberkesanan modul perancahan berstruktur dalam pembelajaran berasaskan projek terhadap pengetahuan pengendalian mesin larik, kemahiran teknikal, kemahiran menyelesaikan masalah dan kemahiran mengorganisasi kerja bagi projek mesin larik pelajar …
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Influence of agglomeration phenomenon in machining of AISI D2 hardened steel using nano chromium powder mixed-EDM
The Powder Mixed-Electrical Discharge Machining (PMEDM), as an influential environment, has been proven to overcome the challenges of dielectric liquids impedance, machinability, and surface integrity problems. Also, the additive powder particles played a vital role in this enhancement. …
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Improvement of machinability and surface integrity during electro discharge machining of inconel 718 using nano powder suspension dielectric
Inconel 718 is one of the most difficult to cut material due to its, high hardness, high toughness, and poor thermal conductivity results in heat concentrated in the cutting zone, making it ineffective to be processed through conventional machining. So usually, an electrical discharge machining …
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Development of three-dimensional (3D) grayscale Photolithography process for microfluidic curvature Structures
Three-dimensional (3D) microstructures can enhance the optical, electrical and mechanical properties of the microfluidic system. However, the 3D microfabrication is challenging when simultaneous control over fabrication of lateral and vertical dimensions is required. To achieve such control, …
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Experimental study of biomedical stainless steel 316l vibration assisted milling using retrofittable 1D UVAM worktable
Nowadays, the demand in industry for hard and brittle materials including alloys and glasses components has been increasing. Thus, it is important to ensure machining for these parts are done in a high precision manner. Ultrasonic vibration assisted milling (UVAM) is a well-known precision …
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Design and development of an automated metered dose inhaler (MDI) for asthmatic patient
To date, infant with illness associated with the pulmonary airway is treated by a doctor using a spacer device with metered dose inhaler (MDI) to allow the infant to breathe in the medication known as salbutamol. Current asthma spacer does not provide systematic way of monitoring and displaying the …
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Pengoptimuman jarak laluan mata alat menggunakan algoritma koloni semut untuk proses pengisaran poket
Pada masa kini, proses pemesinan kisar poket menggunakan mesin Kawalan Komputer Berangka (CNC) banyak digunakan dalam pemotongan logam. Terdapat dua langkah pemesinan di dalam proses pengisaran poket iaitu pemesinan kasar dan kemasan. Pemesinan kasar mengambil masa lebih 50 % dari keseluruhan masa …
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Performance of laser assisted micro-milling (laμmill) of titanium alloy using micro ball end mill
Laser assisted milling technique turns to be complicated and unpredictable when the machining size is scaled to micro level. Furthermore, less has been reported on the application of ball end mill in laser assisted micro milling. This study was carried out to evaluate and clarify the machining …
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Effect of chromium (cr) particle size and span-20 surfactant on Aisi d2 hardened steel using electrical discharge machining
… hardened steels, which are hard and difficult to machine and process. Since it is not suitable to use conventional machining of the hard material, non-conventional machining such as electrical discharge machining (EDM) is one of the ideal techniques in dealing with these materials. However, the …
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Modelling and simulation of surface roughness obtain from micro milling by using artificial neural network
… from large manufacturers to a small tool and die shops, because of its versatility and efficiency. The present work involves the estimation of optimal values of the process variables like, speed, feed and depth of cut, whereas the surface roughness was taken as the output. The obtained results …
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Optimization of parameters of laser non-linear inclined cutting on stainless steel metal
… width and surface roughness characteristics, a machine laser cutting process model using RSM methodology was proposed.
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Olahan air sisa pusat penyembelihan ayam menggunakan elektrod keluli tahan karat dan aluminum melalui proses gabungan elektro-penggumpalan dan pengelompokan dan penggumpalan dengan menggunakan aluminum sulfat dan poli-aluminum klorida
Air sisa yang terhasil daripada proses penyembelihan adalah tidak sesuai digunakan dalam perindustrian, pertanian dan urusan seharian. Salah satu kaedah olahan yang boleh digunakan untuk merawat air sisa ini adalah kaedah elektro-penggumpalan, di mana kaedah ini dapat mengurangkan penggunaan bahan …