Abstract Current research focuses on optimizing various quality characteristics for kerf geometry generated through laser cutting of Coir fibre/carbon fibre/epoxy resin hybrid composite adjacent to straight cut profile employing pulsed CO 2 system. The Kerf taper (KT) and the Surface roughness (SR) are main parameters discussed. Dependent significant process parameters, namely gas pressure, spe...

Recently, the studies on lightweighting have gained significant importance due to requirements such as energy efficiency and sustainability. Polymer materials are a group of that frequently used for this purpose. This study investigated effects laser power, cutting speed focal point kerf width, which most effective process parameters in Polymethylmethacrylate, low-cost polymer material, using R...

Article history: Received June 6 2014 Received in Revised Format September 9 2014 Accepted September 15 2014 Available online September 22 2014 In this paper, an attempt has been made to develop a mathematical model in order to study the relationship between laser cutting parameters such as laser power, cutting speed, assist gas pressure and focus position, and kerf taper angle obtained in CO2 ...

40% of ultrapure silicon is lost as kerf during slicing to produce wafers. Kerf is currently not being recycled due to engineering challenges and costs associated with removing its abundant impurities. Carbon left behind from the lubricant remains as one of the most difficult contaminants to remove in kerf without significant silicon oxidation. The present work enables to better understand the ...

In cutting with laser, appropriate parameters should be selected according to the material being cut. Incorrectly affect dimensional accuracy and surface quality of cut sheets. this study, 3 mm thick Al 5052 sheet was laser operation. Kerf formation roughness sheets were investigated. order obtain optimum results fewer experiments, L18 (21x32) experimental design made Taguchi method. Azote gas ...

In this work, low temperature deposition of ceramics, in combination with micromachining techniques have been used to fabricate a kerfed, annular–array, high–frequency, micro ultrasonic transducer (with seven elements). This transducer was based on PZT thick film and operated in thickness mode. The 27 μm thick PZT film was fabricated using a low temperature (720 oC) composite sol-gel ceramic (s...