http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Pagidi, Srinivas,Manda, Ramesh,Bhattacharyya, Surjya Sarathi,Cho, Kyeong Jun,Kim, Tae Hyung,Lim, Young Jin,Lee, Seung Hee Elsevier 2019 Composites. Part B, Engineering Vol.164 No.-
<P><B>Abstract</B></P> <P>Nano-size distribution of birefringent liquid crystal droplets embedded in the polymer matrix gives rise to an optically isotropic liquid crystal (OILC) phase and the device utilizing OILC composite opens the possibility of alignment layer-free, flexible liquid crystal displays with fast response time. However, few critical issues such as high operating voltages and feeble light scattering are remained to be overcome before their widespread applications. To rectify the drawbacks, a small amount of conductive and anisotropic functionalized carbon nanotubes (f-CNTs) is doped into conventional OILCs. Consequently, switchable electro-optic properties of the proposed approach reveal that driving voltage is decreased by18.7%, response time becomes fast by 27%, and feeble light leakage is reduced to around 3.8 times, compared to conventional one, which helps the proposed approach to be competitive for display and photonic applications of film type of OILCs.</P>
Pagidi, Balachennaiah,Munagala, Suryakalavathi,Palukuru, Nagendra Techno-Press 2016 Advances in energy research Vol.4 No.4
This paper presents a novel symbiotic organisms search (SOS) algorithm to optimize both real power loss (RPL) and voltage stability limit (VSL) of a transmission network by controlling the variables such as unified power flow controller (UPFC) location, UPFC series injected voltage magnitude and phase angle and transformer taps simultaneously. Mathematically, this issue can be formulated as nonlinear equality and inequality constrained multi objective, multi variable optimization problem with a fitness function integrating both RPL and VSL. The symbiotic organisms search (SOS) algorithm is a nature inspired optimization method based on the biological interactions between the organisms in ecosystem. The advantage of SOS algorithm is that it requires a few control parameters compared to other meta-heuristic algorithms. The proposed SOS algorithm is applied for solving optimum control variables for both single objective and multi-objective optimization problems and tested on New England 39 bus test system. In the single objective optimization problem only RPL minimization is considered. The simulation results of the proposed algorithm have been compared with the results of the algorithms like interior point successive linear programming (IPSLP) and bacteria foraging algorithm (BFA) reported in the literature. The comparison results confirm the efficacy and superiority of the proposed method in optimizing both single and multi objective problems.
R. Seetharam,Pagidi Madhukar,G. Yoganjaneyulu,S. Kanmani Subbu,M. J. Davidson 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.4
Mathematical models are among the new approaches employed to predict the properties of any material under various conditions. Mathematical models are essential for not only understanding the material properties but also estimating the costof design, product life, and failure criteria of the product. Therefore, in the current investigation, the hot deformation (HD)behaviour and microstructure alteration of deformed AA7150-5 wt% B4Ccomposite was studied through a mathematicalmodel. The new AA7150-5 wt% B4C composite was fabricated through an ultrasonic-probe assisted (20 KHz, 1000 W)stir casting process. The hot compression test was performed on a hydraulic press for various deformation temperatures(623–773 K) and strain rates (0.01–1 s−1). Based on the outcome, it is inferred that the flow stresses and microstructuresof AA7150-5 wt% B4Ccomposite was significantly altered during the hot compression test under various deformationconditions. The constitutive and dynamically recrystallized grain (DRXed) models were developed as a function of variousdeformation conditions of deformed AA7150-5 wt% B4Ccomposite, which was then applied to forecast the flow stress andgrain size behaviour for different deformation conditions. The flow stress and DRXed grain size were obtained through theproposed constitutive and DRXed models are correlated with experimental results, with excellent accuracy. The modelsdeveloped are reliable to predict the AA7150-5 wt% B4Cproperties for various conditions.
Ultra-fast switching blue phase liquid crystals diffraction grating stabilized by chiral monomer
Manda, Ramesh,Pagidi, Srinivas,Bhattacharya, Surjya Sarathi,Yoo, Hyesun,Kumar T, Arun,Lim, Young Jin,Lee, Seung Hee IOP 2018 Journal of Physics. D, Applied Physics Vol.51 No.18
<P>We have demonstrated an ultra-fast switching and efficient polymer stabilized blue phase liquid crystal (PS-BPLC) diffraction grating utilizing a chiral monomer. We have obtained a 0.5 ms response time by a novel polymer stabilization method which is three times faster than conventional PS-BPLC. In addition, the diffraction efficiency was improved 2% with a much wider phase range and the driving voltage to switch the device is reduced. The polarization properties of the diffracted beam are unaffected by this novel polymer stabilization. This device can be useful for future photonic applications.</P>
A COMMON FIXED POINT THEOREM FOR T-CONTRACTIONS ON GENERALIZED CONE b-METRIC SPACES
Rangamma, Manhala,Reddy, Pagidi Mallikarjun Korean Mathematical Society 2017 대한수학회논문집 Vol.32 No.1
In this paper, we establish a unique common fixed point theorem for T-contraction of two self maps on generalized cone b-metric spaces with solid cone. The result of this paper improves and generalizes several well-known results in the literature. Two examples are also given to support the result.
Kandi Kishore Kumar,Punugupati Gurabvaiah,Madhukar Pagidi,Rao C. S. P. 한국세라믹학회 2022 한국세라믹학회지 Vol.59 No.5
In the current study, response surface methodology (RSM) was successfully used to the method of preparation of fused silica (SiO 2 ) ceramic composites using gelcasting, a near net shape method. The effects of input parameters like solid loading (SL), monomer content (MC), ratio of monomer (RM), and additive boron nitride (BN) and on responses such as flexural strength (FS), porosity (Por.), and dielectric constant (DE) were studied. RSM with central composite face-centered design with 6 center points approach used for planning the tests. The relation between the input variables on the output was investigated and modeled. Three regression models were established using RSM related independent input variables to describe the FS, Por., and DE as the response. The uniqueness of the established model is examined using Analysis of Variance (ANOVA) at 95% confidence level. The numerical investigation of the results showed that in range studied, the three process variables have significant effect on the responses. The obtained mathematical models have high R 2 values (97.66% for FS, 98.45% for Por., and 94.34% for DE) show the good relation between the test and predicted data. The optimal estimates found using RSM was practically confirmed and was 66.30 MPa FS, 23.66% Por., and 4.307 DE acquired at 47.97% SL, 15 wt% MC, 3 RM, and 9.68 wt% BN, respectively.