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492 articles for “AST”
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Contemporary Horizons in Space Science: Innovations, Challenges, and Global Collaborations
Abstract: Marked by fast technological developments, global cooperation, and growing private-sector participation, space science has entered a transforming age. Examining important advances in planetary exploration, astrophysics, space-based observatories, and Earth monitoring from orbit, this study offers a thorough summary of the present condition of space science. It draws attention to recent missions including the James Webb Space Telescope, Mars rovers, lunar exploration initiatives, and rising interest in deep space travel and …
Published in Research & Reviews : Journal of Space Science & Technology · Vol. 14, Issue 2, 2025 · pp. 41–46 Read article
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Graphene-Derived Reinforced Polymer Composites for Self-Healing and Durability Enhancement in Concrete Structures
Abstract: This study presents a matrix-centric polymer-composite repair binder: an epoxy–polyamide network reinforced with graphene derivatives (GO/rGO, 0.1–1.0 wt%). The polymer drives function via segmental mobility that closes microcracks, while 2D-filler topology densifies the interphase, improves load transfer, and enforces tortuous moisture pathways. Adhesion was high: pull-off (ASTM D4541) reached 13.5 MPa at 2.0 mm displacement; slant-shear (ASTM C882) reached 12.1 MPa at 2.8 mm, with greater deformation capacity (zero stress …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 · pp. 77–91 Read article
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Tailoring Toughness of Pineapple Leaf Fiber-Reinforced Epoxy Composites Using Halloysite Nanotubes
Abstract: This comprehensive study investigates the effects of halloysite nanotubes (HNTs) on the impact strength and fracture toughness of pineapple leaf fabric-reinforced epoxy (PALF/Ep) composites with an emphasis on sustainable material development. ASTM D256 and ASTM D5045 standards were followed in the fabrication of the composites. HNT weight percentages were systematically changed from 0 to 3wt% through using solution mixing and manual lay-up techniques, and vacuum bagging was used to obtain …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 261–272 Read article
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Characterization of Glass Fiber/Epoxy Laminates Modified with MWCNT–Al₂O₃ Hybrid Nanofillers
Abstract: Enhancing the performance of fibre-reinforced polymer composites increasingly involves the integration of nanoscale additives that can improve strength, toughness, and overall durability. In the present investigation, woven E-glass/epoxy laminates were modified using a hybrid nanofiller system consisting of multi-walled carbon nanotubes (MWCNTs) and aluminium oxide (Al₂O₃) nanoparticles. The two nanomaterials were combined in a 2:4 proportion and introduced into the epoxy matrix at total loadings of 1%, 3%, and 5% …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 350–368 Read article
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Optimization of Process Parameter in 3D Printing to Minimize Wear Loss and increase Tensile Strength
Abstract: Additive Manufacturing (AM) and especially Fused Deposition Modeling (FDM) has emerged as a very versatile process of manufacturing polymer components with complex and highly-integrated geometries. Polylactic Acid (PLA) is a favorite of the many thermoplastic FDM materials because of its biodegradability, easy processing and predictable mechanical properties. The study aimed at maximizing critical parameters in FDM process in order to reduce wear loss and also increase tensile strength of PLA …
Published in Journal of Polymer & Composites · Vol. 14, Issue 3, 2026 · pp. 849–858 Read article
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Experimental Study on the Tensile Performance of Carbon Fiber Composites Reinforced with Titanium
Abstract: This research investigates the influence of titanium incorporation on the tensile and flexural behavior of carbon fiber‑reinforced polymer (CFRP) composites, with the goal of advancing their overall mechanical performance. This study investigates the effect of titanium incorporation on the tensile behavior of carbon fiber‑reinforced polymer (CFRP) composites to enhance their overall mechanical performance. The work aims to improve the structural efficiency of CFRP laminates by introducing titanium as a filler …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1729–1737 Read article
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Structure–Property Correlation of Infill Topology and Density on Tensile and Flexural Performance of FDM-Printed PLA and ABS
Abstract: Additive Manufacturing (AM), particularly Fused Deposition Modeling (FDM), has become a widely adopted manufacturing technology due to its design flexibility, low cost, and capability for rapid prototyping. However, the mechanical performance of FDM-printed components is strongly influenced by internal structural parameters such as infill pattern and infill density, in addition to the intrinsic material behaviour. This study investigates the structure–property relationship between infill topology, density, and mechanical performance of PLA …
Published in International Journal of Fracture Mechanics and Damage Science · Vol. 4, Issue 1, 2026 · pp. 26–37 Read article
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Mechanical Performance Assessment of Hybrid FRP Laminates with Carbon Fiber Core Using Experimental and Numerical Approaches
Abstract: The high strength-to-weight ratio, corrosion resistance and design flexibility of Fiber-reinforced polymer (FRP) composites have attracted considerable attention in aerospace, automotive and structural applications. This work presents an experimental and finite element study on the tensile and flexural behavior of epoxy-based hybrid FRP laminates. Five laminate configurations were manufactured, including a unidirectional carbon fiber laminate and four hybrid laminates, Kevlar–Carbon–Kevlar (K/C/K), Glass–Carbon–Glass (G/C/G), Kevlar–Carbon–Glass (K/C/G), and Glass–Carbon–Kevlar (G/C/K). For all …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Solar Powered Outdoor Air Purifier with Air Quality Monitoring
Abstract: The Internet has a major challenge with air pollution. Numerous major health issues might be brought on by this dirty air. An air purifier serves as a life-saving aid for people who have breathing issues like asthma or sinusitis or who have lung disorders of any kind. An air purifier lessens the likelihood of health problems brought on by indoor pollution, which might directly cause neurological disorders, respiratory infections, or …
Published in Journal of Thermal Engineering and Applications · Vol. 9, Issue 2, 2022 · pp. 1–7 Read article
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Mechanical and Tribological Properties of Cr3C2-NiCr Coated Ti6Al4V Implant Alloy
Abstract: Ti6Al4V alloys are widely used in medical and aerospace applications due to their superior mechanical properties. But, Ti6Al4V alloys are poor in tribological properties such as wear. Poor wear resistance consequences in the formation of wear debris in human implants and leads to inflammation and pain. In this work, Cr3C2-NiCr coatings were applied to improve the mechanical properties such as tensile strength, hardness and tribological properties such as wear resistance. …
Published in Journal of Experimental & Applied Mechanics · Vol. 8, Issue 3, 2017 · pp. 28–42 Read article
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EVALUATION OF MINE WASTE ROCKS FOR USE AS MATERIALS FOR ROAD CONSTRUCTION
Abstract: Mine rock wastes are materials that are removed in order to access and mine the ore. They pose significant environmental challenges due to their existence in large volumes. The chemical and geomechanical properties of mine rock wastes were determined to aid in assessing their suitability for use as aggregates for road construction. The chemical and geotechnical test performed on the samples were Sulphate, pH, Aggregate Crushing Value, Sodium Sulphate Soundness, …
Published in Journal of Geotechnical Engineering · Vol. 7, Issue 3, 2020 · pp. 38–46 Read article
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Analysis of unidirectional aligned Banana and Glass fiber reinforced polyester composite for tensile and flexural strength
Abstract: The hybrid composite can be set up by utilizing at least two fiber fortifications in the composite. Here the hybrid composite was set up by utilizing banana/glass fiber. In addition, fiber volume loading was 40%. The tensile test and flexural test were preceded according to ASTM D3039 and ASTM D790 separately. The results show that 5% treated fiber shows higher properties than non-treated fiber composite. NaOH treated banana fiber with …
Published in Journal of Polymer & Composites · Vol. 8, Issue 2, 2020 · pp. 49–61 Read article
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Investigation on Mechanical Properties of Bamboo-Plastic Composites by Alkali Treatment and Illustration via Scanning Electron Microscopy
Abstract: The morphological properties, tensile and flexural strength of composite materials made of bamboo fibres and plastic were investigated. Bamboo-plastic composites (BPCs) were made from bamboo fibres, plastic, and urea formaldehyde (UF) resin to evaluate the effects on mechanical properties. Two different types of plastics, namely polypropylene (PP) and low-density polyethylene (LDPE) were used to make the composite fabrication. The bamboo fibres were extracted after soaking them in a sodium hydroxide …
Published in Journal of Polymer & Composites · Vol. 11, Issue 3, 2023 · pp. 86–95 Read article
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Validation of geomorphological parameters of Bori Basin of Akkalkot Taluka, Solapur District by using GIS & Topographic Data
Abstract: The present research discusses the geomorphologic parameters of Bori basin that are determined byusing Geographic Information Systems (GIS) and Topographical Conventional System. The digitalelevation model (DEM) of the basin is downloaded from Aster-GDEM and this digital map is used inthe GIS software program to determine the geomorphologic parameters of the Bori basin. Thegeomorphological parameters are the area of basin, perimeter, river length, slope, etc. The extractedparameters are compared with the …
Published in Journal of Water Resource Engineering and Management · Vol. 8, Issue 1, 2021 · pp. 27–33 Read article
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Study of Wear Behaviour of GFRP Composites filled with Nanofiller using Taguchi Technique
Abstract: AbstractThe GFRP laminates are fabricated by hand lay-up process followed by vacuum bag curing and post cured in a heating oven. The laminates are fabricated with addition of 1%, 1.5% and 2.0% graphene filler and prepared laminates are cut into ASTM standards by using water jet cutting. The density and volume fraction of the void fabricated composite is determined. The three-body abrasive wear test is carried out on abrasion tester …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 3, 2018 · pp. 33–38 Read article
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A Literary Review on Viddha Karma and its role for pain management in sciatic neuritis
Abstract: Sciatic neuritis is a common condition that describes low back pain radiating towards the leg which means manifests sensory symptoms and extended the innervated region of the affected spinal root or roots of the sciatic nerve. The symptoms of sciatica can be compared with Gridhrasi Roga in Ayurveda. The goal of this review was to determine the applicability of Viddha Karma in Gridhrasi Vyadhi (Sciatica).All the ancient Ayurveda texts of …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 11, Issue 3, 2022 · pp. 9–16 Read article
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A study on the efficacy of Rakshoghna Dravya Dhupana in Management of Karna Strav
Abstract: Salakya tantra is one among the eight branches of Astang Ayurved, which deals with disease of Netra, Nasa, Karna, Shir evam Mukha Roga. There are 28 Karna Roga described in Astang Ayurved. From 28 Karna Roga, Karna Strav is one distinguished by ear discharge. This condition is linked to Acute Suppurative Otitis Media. Modern medicine mentions several therapeutic modalities. However, discharge from the ear may be reduced or stopped by …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 12, Issue 3, 2023 · pp. 12–19 Read article
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A View over Saama Majja Dhatu and Its Effects on Body
Abstract: The body tissues which support the body are known as dhatu. These are also called dushya because they get vitiated by tridosha-vata, pitta, kapha and ama. Dhatus are seven in number as rasa, rakta, mansa, meda, asthi, majja, and shukra. When these dhatus remain in their non-vitiated state, participate in the formation of various structures in body, on the other hand in vitiated state by ama causes various type of …
Published in Journal of AYUSH: Ayurveda, Yoga, Unani, Siddha and Homeopathy · Vol. 4, Issue 1, 2015 · pp. 21–23 Read article
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A Comparative Study of Siravyadha and Kokilakshadi Kshayama in Vaatarakta W.S.R to GOUT
Abstract: The life style in modern era is responsible for so many diseases. The vatarakta (gout) is one of them. Firstly, it occurs in hand and foot then spreads in whole body. Gout is a true crystal deposition disease. It can be defined as the pathological reaction of the joint or periarticular tissues to the presence of monosodium urate monohydrate (MSUM) crystals which preferentially deposit in peripheral connective tissues in and …
Published in Research and Reviews : A Journal of Ayurvedic Science, Yoga and Naturopathy · Vol. 4, Issue 3, 2017 · pp. 6–10 Read article
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Significance of Sara Pariksha in Ayurveda: A Critical Review
Abstract: In Ayurveda, Sara Pariksha is one among the ten types of methods to examine a patient, stated as Dashvidha Aatura Pariksha. Sara Pariksha primarily determines the strength of a person. Acharya Chakrapani illustrated Sara as ‘Vishudhataro Dhatu’, which means the essence of all Dhatu. Eight types are explained by Acharya Charaka, each one characterized by both physical as well as psychological parameters. These contribute to the physician in deciding the …
Published in Research and Reviews : A Journal of Ayurvedic Science, Yoga and Naturopathy · Vol. 5, Issue 3, 2018 · pp. 1–6 Read article