نتایج جستجو برای: three different kinds of fibers ie glass
تعداد نتایج: 21256353 فیلتر نتایج به سال:
different glasses suitable for temperature sensing in the fiber optic sensors were studied in this article. the phase changes for eight different glass materials were calculated and results were compared. our results showed that extra dense flint glass is the most sensitive one, while pure silica results in the lowest phase change. in another study the effect of wavelength on the phase variatio...
To encounter the issues of waste materials, low tensile strength concrete and environmental impacts cement production, research is needed to develop a sustainable concrete. This study has endeavored investigate effects using recycled coarse aggregates (RCA), various types wastewater effluents, fly ash, glass fibers on mechanical durability behavior aggregate (RAC) incorporating with ash (FGRAC)...
The behavior of tapered graded-index polymer optical fibers is analyzed computationally for different refractive indices of the surrounding medium. This serves to clarify the main parameters affecting their possible performance as refractive-index sensors and extends an existing study of similar structures in glass fibers. The ray-tracing method is employed, its specific implementation is expla...
the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...
Imperialist competitive algorithm (ICA) is a new socio-politically motivated global search strategy. The ICA is applied to hybrid composite laminates to obtain minimum weight and cost. The approach which is chosen for conducting the multi-objective optimization was the weighted sum method (WSM). The hybrid composite Laminates are made of glass/epoxy and carbon/epoxy to combine the lightness and...
For the first time, Fiber Bragg grating (FBG) structures have been inscribed in single-core passive germanate and three-core passive and active tellurite glass fibers using 800 nm femtosecond (fs) laser and phase mask technique. With fs peak power intensity in the order of 10(11)W/cm(2), the FBG spectra with 2nd and 3rd order resonances at 1540 and 1033 nm in the germanate glass fiber and 2nd o...
Utilitarian, Kantian and Aristotelian ethics are explained. They di er, but because they address di erent problems, it is possible to see each as contributing to an overall understanding of ethics as integrity.
Over the last twenty years, the financial industry has developed numerous tools for the quantitative measurement of risk. The need for this was mainly due to changing market conditions and regulatory guidelines. In this article we review these processes and summarize the most important risk categories considered.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید