Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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    Secure web based Single Sign-On (SSO) framework using identity based encryption system
    (2009) Singh, R.K.; Pais, A.R.
    Due to the vulnerability caused by poor password selection it is very important to have a secure authentication and authorization infrastructure for web based applications. In the current scenario it is very difficult to remember different passwords for different web based applications. We propose centralized password based multiuser and multi-application Single Sign-On (SSO) framework for such applications. Unlike traditional Single Sign-On architectures we are using Identity Based Encryption System (IBES) instead of Public key infrastructure (PKI). Our proposed design provides better security for the users and the system is efficient. This framework is deployed as a web service and can be deployed on a web server. © 2009 IEEE.
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    Experimental investigation on free vibration of composite beams implanted Ni-Ti shape memory alloy wires
    (American Institute of Physics Inc. subs@aip.org, 2019) Singh, R.K.; Murigendrappa, S.M.; Kattimani, S.
    The paper presents free vibration of shape memory alloy hybrid composite beams by experimentally. The hybrid composite beams are fabricated using glass fiber with epoxy resin matrix implanted with the Ni-Ti SMA wires with diameter 0.47mm. The rectangular cross-section of beams with sizes, thickness, 3mm, width, 20mm and length 250mm are considered in the investigation. Free vibration test has been performed for the cantilever beams to investigate the effect on the fundamental natural frequency shift by changing the current as well as increasing the number of SMA wires. The fundamental natural frequency of the beam has shifted on higher side, 12.82% for single wire and 35.48% for two wires implant under the influence of current in comparison with no current state. Further, as supplied current increases in the SMA wire the natural frequency of beam increases helps in improving the stiffness and encourages to avoid resonance state. © 2018 Author(s).
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    Comparison of Stress Distribution of Graphene-Based Bioactive Material for Zirconia and Titanium by Applying Orthotropic Properties: A Finite Element Analysis
    (Springer Science and Business Media Deutschland GmbH, 2024) Singh, R.K.; Verma, K.; Kumar, G.C.
    This study employs finite element analysis to examine stress distribution at the bone–implant interface in graphene-based dental implants. Four implant models, encompassing titanium and zirconia with and without graphene coating, are assessed under axial and oblique loading. Considering their anisotropic nature, bone tissues are simulated as orthotropic, while implants are treated as homogeneous and isotropic. The study utilizes one-way ANOVA and Kruskal–Wallis tests for statistical analysis to compare stress distribution among implant groups. Results indicate superior von Mises stress distribution in graphene-based implants (A2 and A4) compared to the pure material group. The incorporation of graphene coating significantly reduces implant stresses under axial and oblique loads compared to titanium and zirconia. In conclusion, the study underscores the potential benefits of graphene-based implant models in optimizing stress distribution at the bone–implant interface, emphasizing the importance of suitable implant models and biomaterial selection for enhanced dental implant performance. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.