Conference Papers
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Item Mechanical characterization of adhesive layer using Double strap joint specimens(Elsevier Ltd, 2022) Sahana, T.S.; Kaliveeran, V.; Kundapura, S.In practical applications, most of our mechanical and civil structures are subjected to either oscillatory or static load. To design those structures, stress analysis is needed to withstand the design loads. In experimental stress analysis, strain gauges are mounted on those structures to determine stress at a point. Usually, strain gauges are mounted on the substrate using proper adhesives. The quality of strain data is a function of proper mounting. The thickness of adhesives used for mounting techniques should be optimum and very thin to ensure quality results. The underlying adhesive layer acts as an interface between the substrate and the strain gauge. This adhesive layer receives the maximum shear stress when the member is loaded in tension. Therefore, in this research work, the main focus is on characterizing the Araldite adhesive material. A tension test was conducted on the prepared bulk specimen to characterize the adhesive. The Double Strap Joint (DSJ) tests were conducted to investigate the interfacial shear strength and failure modes according to ASTM D 3528 standards. Two sets of specimens, such as plain and knurled straps, were used in this research work. The failure mode in the plain strap joint shows cohesive failure, and the knurled strap joint shows adhesive failure. © 2022Item Behaviour of Masonry Walls under Combined Compression and Shear Loading: 3D Failure Analysis(Elsevier B.V., 2025) Chaitra Shree, V.; Sahana, T.S.; Raveesh, R.M.; Sowjanya, G.V.This study investigates the nonlinear behaviour and failure mechanisms of masonry infill walls subjected to combined axial compression and lateral shear loading. Using the Drucker-Prager plasticity model within ANSYS Workbench, a 3D finite element model of a reinforced concrete (RC) frame with masonry infill was developed. The simulation focused on crack initiation, propagation, and ultimate load-bearing capacity. Results revealed initial stiffness due to confinement, followed by diagonal shear cracking as the dominant failure mode. The finite element analysis showed good agreement with analytical estimations, with a deviation of only ±6% in peak shear capacity. Contour plots of equivalent plastic strain and stress trajectories highlighted the development of tension-induced cracks and residual strength, emphasizing the role of RC confinement. The study validates the Drucker-Prager model for simulating pressure-sensitive masonry behaviour and offers insights into stress redistribution and damage evolution under complex loading. These findings contribute to performance-based design, retrofitting strategies, and structural assessments of masonry-infilled frames under seismic or lateral forces. Future work may incorporate cyclic or probabilistic modelling for enhanced accuracy in real-world applications. © 2025 The Authors.Item Experimental Investigation on Strength Characteristics of Concrete Incorporating Aluminium Dross as Cement Substitute(Elsevier B.V., 2025) Siddesh, K.N.; Sowjanya, G.V.; Raveesh, R.M.; Sahana, T.S.The enhancement of shear performance of reinforced cement concrete beams by using aluminum waste as a partial replacement of cement has gained significant importance in recent times. The study focusses on dual challenges of sustainable construction and effective waste management, by incorporating aluminum dross-a byproduct of the aluminum industry as a partial replacement for cement in reinforced concrete beams. Firstly, the cubes are casted with varying % of aluminum dross by the weight of cement. The cement has been replaced with aluminum dross in finely powdered form by its weight varying from 0%, 5%, 10%, 15%, 20%, 25% and 30%. A series of experiments were conducted to find the range of optimum replacement levels. In that range, reinforced cement concrete beams are casted, again series of experiments were conducted to obtain optimum replacement % and finite element modelling were made to evaluate the shear performance and to validate the result. The results reveal that a 10% replacement of cement with aluminum dross yields the optimum performance, showing improved mechanical strength compared to the control mix. Beyond this dosage, a decline in strength was observed. The results from experiments shows significant improvement in shear strength or shear capacity till optimum replacement levels beyond which shear performance declines. Incorporating aluminum dross not only improves mechanical properties but also reduces cement usage, focusing on sustainability goals. The study demonstrates that aluminum dross can be effectively utilized as a sustainable alternative in cementitious materials, contributing to both environmental protection and economic benefits. © 2025 The Authors.Item Experimental Investigation on Strength Characteristics of Concrete Incorporating Aluminium Dross as Cement Substitute(Elsevier B.V., 2025) Siddesh, K.N.; Sowjanya, G.V.; Raveesh, R.M.; Sahana, T.S.The enhancement of shear performance of reinforced cement concrete beams by using aluminum waste as a partial replacement of cement has gained significant importance in recent times. The study focusses on dual challenges of sustainable construction and effective waste management, by incorporating aluminum dross-a byproduct of the aluminum industry as a partial replacement for cement in reinforced concrete beams. Firstly, the cubes are casted with varying % of aluminum dross by the weight of cement. The cement has been replaced with aluminum dross in finely powdered form by its weight varying from 0%, 5%, 10%, 15%, 20%, 25% and 30%. A series of experiments were conducted to find the range of optimum replacement levels. In that range, reinforced cement concrete beams are casted, again series of experiments were conducted to obtain optimum replacement % and finite element modelling were made to evaluate the shear performance and to validate the result. The results reveal that a 10% replacement of cement with aluminum dross yields the optimum performance, showing improved mechanical strength compared to the control mix. Beyond this dosage, a decline in strength was observed. The results from experiments shows significant improvement in shear strength or shear capacity till optimum replacement levels beyond which shear performance declines. Incorporating aluminum dross not only improves mechanical properties but also reduces cement usage, focusing on sustainability goals. The study demonstrates that aluminum dross can be effectively utilized as a sustainable alternative in cementitious materials, contributing to both environmental protection and economic benefits. © 2025 The Authors.Item Behaviour of Masonry Walls Under Combined Compression and Shear Loading: 3D Failure Analysis(Elsevier B.V., 2025) Chaitra Shree, V.; Sahana, T.S.; Raveesh, R.M.; Sowjanya, G.V.This study investigates the nonlinear behaviour and failure mechanisms of masonry infill walls subjected to combined axial compression and lateral shear loading. Using the Drucker-Prager plasticity model within ANSYS Workbench, a 3D finite element model of a reinforced concrete (RC) frame with masonry infill was developed. The simulation focused on crack initiation, propagation, and ultimate load-bearing capacity. Results revealed initial stiffness due to confinement, followed by diagonal shear cracking as the dominant failure mode. The finite element analysis showed good agreement with analytical estimations, with a deviation of only ±6% in peak shear capacity. Contour plots of equivalent plastic strain and stress trajectories highlighted the development of tension-induced cracks and residual strength, emphasizing the role of RC confinement. The study validates the Drucker-Prager model for simulating pressure-sensitive masonry behaviour and offers insights into stress redistribution and damage evolution under complex loading. These findings contribute to performance-based design, retrofitting strategies, and structural assessments of masonry-infilled frames under seismic or lateral forces. Future work may incorporate cyclic or probabilistic modelling for enhanced accuracy in real-world applications. © 2025 The Authors.