4,639 research outputs found

    Characterization of indentation damage resistance of hybrid composite laminates using acoustic emission monitoring

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    This paper focuses on the experimental investigation of impact damage resistance in hybrid composite laminates. In this case, the low velocity impact behaviour of quasi-isotropic glass/epoxy, glass/basalt/epoxy (G/B/G, B/G/B) and glass/carbon/epoxy (G/C/G, C/G/C) composite laminates was simulated by carrying out quasi-static indentation (QSI) tests with online acoustic emission (AE) monitoring. The dent depth, back surface crack size and load-deflection behaviors were examined and there is no distinct differences could be seen between low velocity impact tests and quasi-static indentation tests. The QSI tests were performed on specimens with rectangular section, of size 150 mm x 100 mm, which were loaded at the centre by a hemispherical steel indenter with 12.7 mm diameter. The indentation response was evaluated by measuring peak force, absorbed energy and linear stiffness. The residual strength of the laminates following indentation was measured by testing them under compression load in a 100 kN universal testing machine, once again with AE monitoring. AE parameters, such as amplitude, rise time, cumulative counts and cumulative energy were considered for monitoring damage progression during quasi-static indentation loading. Also other parameters linked to AE monitoring, such as the rise angle (RA) and Felicity ratio (FR) were measured for evaluating the damage resistance in each cycle of indentation. In addition, sentry function was also computed based on the combination of mechanical strain energy accumulated in the materials and of the acoustic energy propagates by fracture events made it possible to evaluate the amount of induced damage. These results showed that the combination of glass and carbon fibres in glass/carbon/epoxy (C/G/C) laminates improved their interlaminar shear strength at a level well above the other configurations tested

    FIGURE 2 in A new species of Euconocephalus Karny, 1907 (Orthoptera: Tettigoniidae: Conocephalinae: Copiphorini) from India

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    FIGURE 2. Euconocephalus narayanpurensis sp. nov. Kumar & Chand (Male). A—Head & pronotum, dorsal view. B— Sternum, ventral view. C—Frons. D—Head & pronotum, lateral view. E—Stridulatory file of left elytra, ventral view. F— Upper part of elytra, dorsal view. G—Abdominal apex, dorsal view. H—Abdominal apex, ventral view. I—Abdominal apex, lateral view.Published as part of Kumar, Hirdesh, Chand, D. Suresh, Raghunathan, C. & Banerjee, Dhriti, 2023, A new species of Euconocephalus Karny, 1907 (Orthoptera: Tettigoniidae: Conocephalinae: Copiphorini) from India, pp. 202-208 in Zootaxa 5230 (2) on page 205, DOI: 10.11646/zootaxa.5230.2.4, http://zenodo.org/record/755352

    Bibliographics for the 983 eprints in the live archives of E-LIS : trends and status report up to 7th July 2004, based on author-self-archiving metadata

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    The priority for ideas and philosophy related to "Network Theory" have been traced back and documented by Braun(2004),and credit goes to Karinthy(1929).The IT has empowered to realise it, as the most practical phenomena and it is no more a humour. The OAI (Open Archives Initiatives)and ACIS (Academic Contributor Information System)are progressive in the direction ,which may lead to realise the "Collective Genius" at global level. Focus of present study is on Author-Self-Archiving (A-S-A)Metadata of the 983 Eprints in the Live Archives of the E-LIS (EPrints of Library and Information Science),which were approved till 7th July 2004.The A-S-A Metadata was used for librametric analysis. Self-explanatory bibliographics are illustrated.The highlights include: Conference papers (34%); highest approval, June 2004 (28%); published archives (76%);not refereed (52%); not in public domain (60%); highest self-archiving-author (De Robbio, Antonella).The Nos. of EPrints having single JITA domain specifications were: Theoretical and general aspects of libraries and information(27); Information use and sociology of information(80);Users,literacy and reading(13);Libraries as physical collections(30);Publishing and legal issues(57);Management(13);Industry, profession and education(36);Information sources, supports, channels(113) ; Information treatment for information services, Information functions and techniques (101); Technical services libraries, archives and museums(25); Housing technologies(1); Information technology and library technology(92); and Inter-domainery (395) i.e. having specifications of two or more than two JITA classes

    Modulations in the diffracted intensity in chiral smectic-C liquid crystals

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    Recently [K. A. Suresh, Yuvaraj Sah, P. B. Sunil Kumar, and G. S. Ranganath, Phys. Rev. Lett. 72, 2863 (1994)] the intensity and polarization features associated with the optical diffraction in chiral smectic-C liquid crystal were studied in the phase grating mode. In the computations it was found that the diffracted intensity, as a function of sample thickness, has modulations of different length scales. In this paper, using a perturbative approach, we show that these modulations are a consequence of a coupling between different orders of scattering

    FIGURE 2. Polycarpaea palakkadensis illustration a in Polycarpaea palakkadensis (Caryophyllaceae), a new species from Kerala, South- West India

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    FIGURE 2. Polycarpaea palakkadensis illustration a. habit; b. stipules; c. flower; d. bract; e. petal; f. stamen; g. gynoecium; h. fruit; i. seed (drawings by V. Suresh).Published as part of Arya, Sindhu, Kumar, Venugopalan Nair Saradamma Anil, Nathanpillai, Ambika Viswa, Philip, Alen Alex, Sojan, Jose & Suresh, Veerankutty, 2021, Polycarpaea palakkadensis (Caryophyllaceae), a new species from Kerala, South- West India, pp. 151-157 in Phytotaxa 527 (2) on page 153, DOI: 10.11646/phytotaxa.527.2.8, http://zenodo.org/record/574452

    FIGURE 2 in Rediscovery of Liara (Unalianus) heteracanthus (Redtenbacher, 1891) (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini) from India with notes on its distribution

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    FIGURE 2. Liara (Unalianus) heteracanthus (Redtenbacher, 1891) (Male). A—Head & pronotum, dorsal view. B—Frons. C—Head & pronotum, lateral view. D—Sternum, ventral view. E—Abdominal apex, dorsal view. F—Abdominal apex, apical view. G—Abdominal apex, ventral view. H—Fore leg, ventral view. I—Fore tibia, dorsal view. J—Middle leg, ventral view. K—Hind femur, ventral view. L—Hind tibia, dorsal view.Published as part of Kumar, Hirdesh, Kushwaha, Sandeep & Chand, D. Suresh, 2021, Rediscovery of Liara (Unalianus) heteracanthus (Redtenbacher, 1891) (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini) from India with notes on its distribution, pp. 166-170 in Zootaxa 5020 (1) on page 169, DOI: 10.11646/zootaxa.5020.1.8, http://zenodo.org/record/522313

    Deep neural networks for multimodal imaging and biomedical applications Advances in bioinformatics and biomedical engineering book series./ Annamalai Suresh, R. Udendran, S. Vimal.

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    "Premier Reference Source" -- taken from front cover.Includes bibliographical references and index."This book provides research exploring the theoretical and practical aspects of emerging data computing methods and imaging techniques within healthcare and biomedicine. The publication provides a complete set of information in a single module starting from developing deep neural networks to predicting disease by employing multi-modal imaging"--The Pivotal Role of Edge Computing With Machine Learning And It's Impact On Healthcare / Muthukumari S.M., George Dharma Prakash Raj -- Exploring Internet of Things and Artificial Intelligence for smart Healthcare solutions / G. Yamini Yamini -- A Comparative Study of Popular CNN Topologies Used For Imagenet Classification / Hmidi Alaeddine, Malek Jihene -- Advancements in Techniques of Biomedical Image Analysis / Rajitha B. -- Demystification of Deep Learning-driven Medical Image Processing and its impact on future Biomedical Applications / Udendhran Mudaliyar, M. Bala Murugan, Suresh Annamalai -- Transforming Biomedical Applications through Smart Sensing and Artificial Intelligence / Harini T.J., Suresh V., Carmel M. -- Use of eggshell as partial replacement for sand in concrete used in biomedical applications / Sebastin S., Murali Ram Kumar S.M. -- Deep Learning Models for Semantic Multi modal Medical Image Segmentation / V.R.S. Mani.1 online resource (xvi, 294 pages)

    FIGURE 2 in A new species of Xestophrys Redtenbacher, 1891 (Orthoptera: Tettigoniidae; Conocephalinae; Copiphorini) from West Bengal, India

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    FIGURE 2. Xestophrys bengalensis sp. nov. (Male). A–Head & pronotum, dorsal view. B–Frons. C–Sternum, ventral view. D–Mirror of right tegmen, dorsal view. E–Stridulatory file of left tegmen, ventral view. F– Head & pronotum, lateral view. G– Stridulatory file of left tegmen, dorsal view. H–Apex of left tegmen, dorsal view. I–Fore femur, ventral view. J–Hind femur, ventral view. K–Abdominal apex, dorsal view. L–Abdominal apex, lateral view. M–Abdominal apex, apical view. N–Abdominal apex, ventral view; O–Left cercus, dorsal view.Published as part of <i>Kumar, Hirdesh & Chand, D. Suresh, 2023, A new species of Xestophrys Redtenbacher, 1891 (Orthoptera: Tettigoniidae; Conocephalinae; Copiphorini) from West Bengal, India, pp. 585-589 in Zootaxa 5361 (4)</i> on page 587, DOI: 10.11646/zootaxa.5361.4.9, <a href="http://zenodo.org/record/10151730">http://zenodo.org/record/10151730</a&gt

    FIGURE 1. Polycarpaea palakkadensis a in Polycarpaea palakkadensis (Caryophyllaceae), a new species from Kerala, South- West India

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    FIGURE 1. Polycarpaea palakkadensis a. habit; b. inflorescence; c. stipules; d. bract; e. flower f. & g. sepals; h. petal; i. stamen; j. gynoecium; k. fruit; l. seed (pictures by A. Sindhu).Published as part of Arya, Sindhu, Kumar, Venugopalan Nair Saradamma Anil, Nathanpillai, Ambika Viswa, Philip, Alen Alex, Sojan, Jose & Suresh, Veerankutty, 2021, Polycarpaea palakkadensis (Caryophyllaceae), a new species from Kerala, South- West India, pp. 151-157 in Phytotaxa 527 (2) on page 152, DOI: 10.11646/phytotaxa.527.2.8, http://zenodo.org/record/574452
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