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 15 of 15 for “"TJ1125-1345 Machine shops and machine shop practice"”.
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Amalan pengurusan keselamatan bengkel kemahiran hidup (KHB) Sekolah Menengah Harian Daerah Batu Pahat
… perbezaan yang signifikan di antara pelajar di bandar dan luar bandar iaitu t=-4.08 dan p=0.000 di mana nilai min ukuranya pula ialah -.19. Beberapa cadangan telah dikemukakan bagi penambahbaikkan seperti mengadakan kempen kesedaran dan menyediakan sudut standard operasi amalan pengurusan …
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Effects of chromium powder mixed in electrical discharge machining of AISI D2 hardened steels
… 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 using powder metallurgy electrode together with chromium (Cr) powder suspension into the dielectric fluid which has led …
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New technique for the development of open CNC cell controller based on ISO 14649 and ISO 6983
… be more flexible, interoperable, adoptable, open and intelligent. In the projection towards the development of the next generation of CNC systems, the problem of current International Standards Organization (ISO) data interface model (ISO 6983) limitations was encountered. A new ISO standard known …
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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
… of dielectric liquids impedance, machinability, and surface integrity problems. Also, the additive powder particles played a vital role in this enhancement. Nevertheless, this environment suffers from the powder agglomeration phenomenon, as abnormal behaviour, resulting in the dropping of the …
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Improvement of machinability and surface integrity during electro discharge machining of inconel 718 using nano powder suspension dielectric
… 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 (EDM) is chosen in order to overcome such …
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Development of three-dimensional (3D) grayscale Photolithography process for microfluidic curvature Structures
… 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, grayscale photolithography …
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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
… does not provide systematic way of monitoring and displaying the percentage value of the propellant. Furthermore, user non-compliance is found to contribute towards longer recovery rate. Therefore, this product is designed and developed capable of detecting the propellant level inhaled by the …
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Pengoptimuman jarak laluan mata alat menggunakan algoritma koloni semut untuk proses pengisaran poket
… masa pemesinan kasar yang lebih rendah berbanding zigzag dan satu hala. Walau bagaimanapun, terdapat satu masalah di dalam pemesinan kontur iaitu berlaku bahagian lebihan tidak terpotong pada bahagian bucu dan tengah. Kawasan lebihan tidak terpotong ini berlaku kerana penetapan nilai selang …
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Performance of laser assisted micro-milling (laμmill) of titanium alloy using micro ball end mill
… 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
… materials such as composite, super alloys, and 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 …
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Modelling and simulation of surface roughness obtain from micro milling by using artificial neural network
… important properties in any machining process and in micro milling it is really critical as the product needs to be of a very high surface quality. Therefore the present research is aimed at finding the optimal process parameters for end milling process and optimum surface roughness. In this …
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Optimization of parameters of laser non-linear inclined cutting on stainless steel metal
… between the process input parameters and resultant surface roughness; kerf width characteristics. The research conduct is based on the Design of Experiment (DOE) analysis. Response Surface Methodology (RSM) is used in this research, it is one of the most practical and most effective …
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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
… memberikan peratusan penyingkiran terbaik berbanding susunan lain. Nilai optimum ketumpatan arus elektrik, jarak antara elektrod, pH awalan, masa tindak balas dan masa enapan masing-masing adalah 25 A/m2, 5 cm, 5, 75 min dan 40 min. Manakala, peratusan penyingkiran yang diperolehi bagi COD, SS, …