نتایج جستجو برای: laser forming
تعداد نتایج: 296139 فیلتر نتایج به سال:
Laser forming (LF) of sheet material is a progressive treatment process and have some benefits. flexible need no heavy metal-intensive equipment tools. Materials with high rigidity, brittle, elastic materials can be treated by laser forming. Therefore, the investigation LF important task. An point to study repeatability multipass explore possibilities stabilizing parameters. Actually, this rese...
Geometric effects play an important role in laser forming process; however, few investigations have been reported on the geometric size effect other than sheet thickness. In this paper, the influence of size effect, including sheet width and sheet length, on laser induced deformation is experimentally, numerically and analytically investigated. A size matrix is designed to cover a wide range of...
For many years, the selective emitter approach has been well-known to yield cell efficiencies well above those achieved by conventional screen-printed cells. A simple and effective way of forming a selective emitter can be achieved by laser doping to simultaneously pattern the dielectric with openings as narrow as 8 m, and create heavy doping beneath the metal contacts. In conjunction with las...
background: the aim of this study was to evaluate and compare the in vitro biofi lm forming capacity of enterococcus faecalis on gutta-percha points disinfected with four disinfectants. materials and methods: a total of 50 gutta-percha points used in this study were divided into four test groups based on disinfectant (5.25% sodium hypochlorite, 2% chlorhexidine gluconate, 20% neem, 13% benzalko...
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