Indian Institute of Technology Ropar

About: Indian Institute of Technology Ropar is a education organization based out in Ropar, India. It is known for research contribution in the topics: Catalysis & Computer science. The organization has 1014 authors who have published 2878 publications receiving 35715 citations.

Two-step synthesis of polyurethane/multi-walled carbon nanotubes polymer composite to achieve high percentage particle reinforcement for mechanical applications:

Abstract: The present work has been aimed to synthesize Polyurethane (PU)/Multi-Walled Carbon Nanotubes (MWCNTs) composite using a two-step method to enhance mechanical properties. In the first step, films (...

Characterization of thermal sprayed hydroxyapatite coatings on some biomedical implant materials.

Abstract: PurposeTo characterize two thermal sprayed coatings of different particle-sized hydroxyapatite on some biomedical implant materials.MethodsCharacterization of the as-sprayed coatings was performed ...

Directional dependent variation in mechanical properties of planar anisotropic porcine skin tissue

Abstract: Nonlinear and anisotropic mechanical behavior of skin is essential in various applications such as dermatology, cosmetic products, forensic science, and computational studies. The present study quantifies the mechanical anisotropy of skin using the bulge method and full-field imaging technique. In bulging, the saline solution at 37 °C mimics the in vivo body temperature and fluid conditions, and all experiments were performed in the control environment. Assumption of thin spherical shell membrane theory and imaging techniques were implemented to obtain the anisotropic stress strain relations. Further, stress strain relations at an interval of 10° were calculated to obtain the variation in modulus with direction. Histological examinations were performed to signify the role of the collagen fibers orientation on the mechanical properties. The maximum and minimum linear modulus and collagen fiber orientation intensity were found in good agreement. The angular difference between maximum and minimum linear modulus and orientation intensity was found 71° ± 7° and 76° ± 5° respectively, and the percentage difference was 43.4 ± 8.2 and 52.5 ± 6.4 respectively. Further, a significant difference in the maximum and minimum collagen orientation intensity between the untested and tested specimens indicates the realignment of the fibers. Additionally, a cubic polynomial empirical relation was established to calculate the quantitative variation in the apparent modulus with the directions, which serves for the anisotropic modeling of the skin. The experimental technique used in this study can be applied for anisotropic quantification of planar soft tissues as well as can be utilized to imitate the tissue expansion procedure used in reconstructive surgery.

Reliability Improvement in Clustering-Based Vehicular Ad-Hoc Network

Abstract: Clustering based vehicular Ad-hoc Network (CAN) is being considered as the most viable solution to integrate milimeter wave (mmWave) and sub-6 GHz interface in vehicular communication. In CAN, the data path contains two cascaded links, mostly mmWave link for vehicular to vehicular (V2V) connectivity and sub-6 GHz link for vehicular to infrastructure (V2I) connectivity. In this letter, we have introduced diverted path approach (DPA) to enhance V2V communication reliability. In addition, the notion of back-up link has been introduced to enhance V2I communication reliability. Then, through simulation results, it is shown that DPA can significantly improve V2V communication reliability. Further, it is shown that the incorporation of both the proposed schemes with the existing CAN, significantly enhances the overall vehicular (V2V+V2I) communication reliability.

Sustainability analysis of pedestrian and cycling infrastructure – A case study for Bangalore

Abstract: The current paper proposes a methodological framework incorporating a Composite Sustainability Index (CSI) to determine the sustainability impact on providing segregated footpaths and cycle-lanes. It establishes a link between the proposed Non Motorized Transport (NMT) infrastructure and CSI using the explanatory indicators: number of motorized vehicles and vehicle- kilometers travelled by the motorized modes. The main components of the framework include an estimation of the mode choice model, calculation of the explanatory indicators for the scenarios before and after providing NMT infrastructure, and determination of the sustainability impact. The proposed framework is then used to determine the sustainability impact on providing NMT infrastructure inside the Central Business District (CBD) of Bangalore and around the bus stops carrying trips to the CBD. Three case studies were undertaken with the first one considering only intra zonal (CBD) trips, the second one considering only inter zonal trips having CBD as destination, and the third one considering both the trips. The results of all case studies found an increase in the CSI, and thus an improvement in the sustainability on providing segregated footpaths and cycle-lanes. Further, from a social equity perspective, providing NMT infrastructure offered an alternate modal option for the low-income group and reduced their dependence on public transport.