Comparative study on GFRP and steel tube reinforced GFRP composite in terms of strength to weight ratio
Composite materials with high specific strength and specific modulus properties are mainly used in the automotive and aerospace industries. Currently, a lot of research is happening on advanced composite materials in order to improve these properties. The objective of the present work focused on, the studies related to the effect of laterally reinforced hypodermic steel tubes in Glass Fiber Reinforced Plastic (S-GFRP) composite by estimating strength to weight ratio. These specimens were prepared using hand layup process. From experimental data, mechanical properties like ultimate compressive ultimate strength, stiffness, strength to weight ratio determined. The experimental results show that a GFRP specimen with lateral reinforcement of hypodermic steel tubes (S-GFRP) give high stiffness and high strength to weight ratio compared to that of plane fiber reinforced plastic (GFRP).
Published by: Avinash G Hiremath, Nagraj Biradar, G. G. Giridhara
Author: Avinash G Hiremath
Paper ID: V4I4-1468
Paper Status: published
Published: August 14, 2018
A prospective study on drug utilisation pattern of cephalosporins in respiratory tract infections
Drug Utilization Pattern is defined by WHO in 1977 as "the marketing, distribution, prescription and the use of drugs in a society, with special emphasis on the resulting medical, social and economic consequences”. The aim is to evaluate the Drug Utilization Pattern of cephalosporins in respiratory tract infections. Methods: In a prospective observational study performed over a 6 months period (2017-2018), hospitalized adult patients who received cephalosporins for respiratory tract infections were selected. The collected data included demographic details, information regarding a cough, phlegm, periods of a cough and phlegm, breathlessness, wheezing, chest illness, past illness, tobacco, and smoking. Over the study period, 185 patients were evaluated. Lower Respiratory Tract infected patients (130) 70.3% were more than Upper Respiratory Tract (55) 29.7%. Majority patients came with a complaint of breathing (113) 61.1% difficulty following by acute exacerbation of COPD (39) 21.1%. First, second and third generation cephalosporins were prescribed. Out of which, the third generation were mostly prescribed than the other two; ceftriaxone 51.4% and cefixime 22.2 %.Around (83) 44.9% patients were having co-morbid conditions, diabetes followed by hypertension.
Published by: Mathew George, Lincy Joseph, Dr. Sujith K, Monisha Mohan
Author: Mathew George
Paper ID: V4I4-1449
Paper Status: published
Published: August 14, 2018
Effect on properties of concrete using Bricks Kiln Dust (BKD)
Sustainable resources management and development have been at the forefront of an important issue concerning the construction industry for the past several years. Specifically, the use of sustainable building materials and reuse of waste materials is gaining importance and becoming commonplace in many areas. As one of the most commonly used construction materials in the world, concrete composed of natural aggregate, natural sand, cement, and water, out of these raw materials for concrete, cement can be manufactured in industries but natural aggregates are non renewable resources and depleting at an alarming rate, results in scarcity of good quality natural occurring aggregates (coarse and finer one). In the present study the hardened properties like compressive strength, split tensile strength, and also durability properties like ISAT, test were carried out on Brick kiln dust concrete. The percentage of bricks kiln dust that partially and fully replaced by fine aggregates by weights were 0%, 20%, 40%, 60%, 80% and 100%. Experiments were conducted for both Ordinary Concrete and bricks kiln dust Concrete with different percentages of BKD. It is observed from the experimental results and its analysis, that the compressive strength of concrete, splitting tensile strength of concrete increases with the addition of low Percentage of bricks kiln dust. The results show that the optimum replacement of recycled bricks kiln dust with fine aggregates was 20%. Up to 20% replacement, it is possible to gain the same strength as conventional concrete. Beyond 20% replacement the strength results following a decreasing trend.
Published by: Himanshu Pratap Singh, Ram Bharosh
Author: Himanshu Pratap Singh
Paper ID: V4I4-1459
Paper Status: published
Published: August 13, 2018
An experiment on characteristic of concrete using glass fiber
Extensive experimental investigation on glass fibre reinforced concrete was carried out by researchers. Glass fibre mesh is more effective in resisting bending and punching shear. Steel Fibres are most popular metallic fibres used for the production of Steel Fibre Reinforced Concrete particularly from the point of view of strength and ductility. Test results conducted by various researchers revealed that the use of non-metallic fibre like Nylon, Polythene, Organic fibres, Vegetable fibres etc. are more effective in resisting bending and punching shear. Usually, usage of fibres enhances the properties of concrete structures. Glass Fibres are used for the production of Glass fibres Reinforced Concrete in this study. Glass fibres of size 1mm dia. are available for industries. Fibre reinforced concrete is used for the construction of airport pavements to improve the properties of strength and toughness. So far, a very limited quantity of research work has been done on the application of glass fibres in structural concrete. Hence, the present research would lead to a stronger and durable Glass Fibre Reinforced Concrete, which can be recommended for applications like a construction of special building and shelters, slab panels, wall planes, special repair job work, rigid pavements etc. At present, research studies are made on various properties of glass fibre reinforced concrete by using AR-Glass fibres in concrete in various percentages. It is observed that studies showed Glass Fibre Reinforced Concrete mixes provide an improvement of high performance and high strength concretes. The present thesis would contribute to the efforts being made in the field of concrete technology towards the development of concretes possessing very much enhanced and special durable properties. Based on the study, valuable advice will be given for concrete structures. In the present experimental investigation, attempts are made to study on the various strength properties like compressive strength, split tensile strength, an also durability properties like Acid and Sulphate attack on both ordinary concrete and Glass Fibre Concrete, using alkali-resistant glass fibres at stipulated ages. Experiments were conducted for both Ordinary Concrete and Glass Fibre Concrete with different percentages of AR-Glass fibres. Studies were made on strength properties of Ordinary Concrete and Glass Fibre Concrete mixes. Studies were made on residual compressive strength, weight loss of Ordinary Concrete and Glass Fibre Concrete mixes. The experimental test was also held on Glass Fibre Reinforced Concrete and ordinary concrete.
Published by: Shrikant Patil, Ram Bharosh
Author: Shrikant Patil
Paper ID: V4I4-1454
Paper Status: published
Published: August 13, 2018
Radix-4 DIT FFT implementation using Fused Floating-Point Arithmetic Unit
The paper presents a hardware implementation of radix-4 DIT FFT butterfly-unit using Fused Floating-point Arithmetic Unit (FFAU) technique. The proposed FFAU is more efficient in area and delay than the primitive floating-point arithmetic operation. The radix-4 DIT FFT using FFAU is designed and synthesized in cadence using 45nm technology. The non pipelined conventional architecture of FFT operates in 6Mhz whereas proposed FFT architecture operates on 10 Mhz frequency. The outcome area is 46% efficient than the conventional FFT architecture. The 16 point DIT FFT is also implemented on the same proposed FFAU, to ensure the computation speed.
Published by: Rajeev Gowda B R, Dr. A.B Kalpana
Author: Rajeev Gowda B R
Paper ID: V4I4-1476
Paper Status: published
Published: August 13, 2018
Application of tuned mass dampers in torsionally coupled buildings
High rise building structures are both a necessity and a matter of sophistication and pride for structural engineers. Forces of nature in the form of earthquakes and cyclones starts playing brutal games with the structures, higher the structure goes, and higher it attracts the forces and wrath of nature in the form of seismic force. Seismic force, predominantly being an inertia force depends on the mass of the structure causing requirement of heavier sections as mass increases. And these heavy sections further increase the mass of the structure leading to even heavier seismic forces. Structural designers are met with the huge challenge to balance these contradictory physical phenomena to make the structure safe. The structure no more can afford to be rigid. In recent year, it is common practice to install vibration control devices on structures to mitigate their dynamic response caused by different factors, mainly due to wind and earthquake excitations. Among these devices, tuned mass dampers (TMD) have been widely used in building to mitigate dynamic responses of buildings. As the structural complexity of buildings increase, their response to such excitations may become more prone to torsional motion. Torsional motion induced by such excitations can be suppressed by utilizing TMDs. The performance of TMD at different positions are important for torsionally coupled structures. In this study, the performance of bi-directional tuned mass dampers (BTMD) in reducing the torsional response of a building under bi-directional earthquake excitations was studied and evaluated.
Published by: Zartab Alam, Aamir Baig, Faiyaz Azam
Author: Zartab Alam
Paper ID: V4I4-1464
Paper Status: published
Published: August 13, 2018
