Browse

Abrasive waterjet technology (AWJ) is one of the fastest growing machining processes. It is environmentally friendly, can machine almost any engineering materials. It has received considerable attention from various industries due to its beneficial characteristics. Compared with traditional and most non traditional machining technologies, AWJ exhibits a high potential in the field of the shape machining of hard or brittle materials such as ceramics, glass and rocks. The present study investigates the machinability...

Abrasive waterjet machining (AWJ) with its wide ranging applications, offers a variety of advantages. It is very effective in machining materials which are hard to machine such as steel, composites and stones etc. The efficiency of the cutting process depends on several factors (e.g. hydraulic, nozzle and cutting). Kerf geometry, depth of cut, surface roughness and material removal rate are often used as target parameters. Although, several researchers studied the influence of process parameters on different mater...

Recent trends in the ornamental industry have increased the use of granite for various decorative applications owing to its outstanding mechanical properties and multicolor. Machining of granites with conventional systems is costly. Therefore, new technologies are being developed for cutting and processing applications of granites. Abrasive waterjet cutting (AWJ) is one of the non-traditional machining processes that have been used extensively in various industrial applications. It enables to cut materials being h...

Increasing of greenhouse gas emissions in atmosphere has caused the raises of global temperatures. Between the greenhouse gases, methane is the second highest contributor to greenhouse gases. Main activities causing methane emissions are enteric fermentation, oil and natural gas systems, coal mining, manure management, rice cultivation and land filling. Methane is released from surface and underground coal mines as a result of production activities. Underground coal mines are responsible for majority of methane em...

Mine design is dependent upon two categories of data as layout and operations. Layout data are related mainly with the geomechanical and geometrical properties of ore and rock masses. This group of data has an effect to define the geometrical variables of the layout and the operating characteristics of the possible system. Mine design processes suffer mainly from obtaining reliable and adequate data. Operational research methods have been extensively assisted by design engineers to overcome the difficulties relate...