Applied Mechanics and Materials Vols. 813-814

Abstract: Desiccant wheel dehumidifier is filled with solid desiccants, looks like a honeycomb structure which is open on both ends. Air is allowed to pass through the honeycomb passages, giving moisture to the solid desiccant contained in the wheel. The wheel constantly rotates through two separate air streams. The first air stream, called the process air is dried by the desiccant. The second air stream, called reactivation or regeneration air is heated and dries the desiccant. The combination of desiccant materials such as chloride desiccant and organic desiccant is used here and dehumidification in the composite desiccant wheel has been studied experimentally. In this work, study performance of composite desiccant wheel with different air velocities, regeneration temperatures and at different inlet conditions was conducted and calculated the different performance indices of the desiccant wheel dehumidifier such as Dehumidification Effectiveness and Dehumidification Coefficient of Performance (DCOP).

Abstract: This paper presents the geometrically nonlinear analysis of smart sandwich plates. The top surface of the plate is integrated with a layer of commercially available active fiber composite. Considering the First order shear deformation theory individually for each layer of the sandwich plate, a three-dimensional finite element model has been developed. The performance of active fiber composite for the smart control of geometrically nonlinear deflection of the sandwich plates has been studied and numerical results are presented.

Abstract: This work deals with the replacement of conventional two-piece steel drive shaft with a single-piece high strength composite drive shaft for an automotive application. The structural design parameters were optimized with the help of modelling software with the objective of minimizing the weight of composite drive shaft. The design optimization also showed significant potential improvement in the performance of propeller shaft. The modelling and analysis of the drive shaft [1] assembly was done using CATIA[2]/ANSYS software. Glass fiber reinforced polymer with silicon carbide is used in fabricating the propeller shaft. Finally, the analysis results were compared with conventional steel drive shaft.

Abstract: The objective of the present study is to investigate the engineering properties of paddy (One-thousand-one) grown in the coastal region of Odisha (India). The average length, width and thickness of paddy are measured as 8.80 mm, 2.65 mm and 1.91 mm respectively at moisture content of 28% (wb). The mean bulk density and true density of the particular variety of paddy are measured to be 0.61 g/cc and 1.47 g/cc. Properties like equivalent diameter, sphericity, grain volume, grain surface area, aspect ratio and porosity are calculated to be 3.58 mm, 0.40, 24.00 mm³, 35.66 mm², 0.30, 58.24% respectively. The angle of repose and angle of friction of the paddy grains are determined to be 37.73o and 0.43o, 0.25o, 0.30o with plywood, glass and galvanized iron respectively. These engineering properties are useful in design of forced convection dryer for the drying and processing of paddy.

Abstract: The quality of weld depends upon welding parameters and exposed environment conditions. Improper selection of welding process parameter is one of the important reasons for the occurrence of weld defect. In this work, arc sound signals are captured during the welding of carbon steel plates. Statistical features of the sound signals are extracted during the welding process. Data mining algorithms such as Naive Bayes, Support Vector Machines and Neural Network were used to classify the weld conditions according to the features of the sound signal. Two weld conditions namely good weld and weld with defects namely lack of fusion, and burn through were considered in this study. Classification efficiencies of machine learning algorithms were compared. Neural network is found to be producing better classification efficiency comparing with other algorithms considered in this study.

Abstract: This paper indicates the difference between the strengthened reinforced high performance concrete beams and the normal reinforced high performance concrete beams. This paper shows the cyclic behaviour of the two types of beams. Experimental investigations were carried out on reinforced High Performance Concrete (HPC) beams of size 150 mm × 250 mm × 3000 mm under both static loading and cyclic loading separately under four point bending. It was observed that the trend in behaviour of the load-deflection curve of the beams was showing the same trend of normal reinforced concrete beams under static loading. In static loading the strain energy absorbed by the beams were observed to be the same as calculated with the area under the load-deflection curve. Other beam was tested under cyclic load separately. The load applied was 35% of static ultimate load which was uniform throughout the fatigue testing of the beams. It was observed that the deflections were increased with the number of cycles. Some of the beams were strengthened by different types and thickness of the GFRP sheets. It was also observed that the strengthened beams withstood more number of cycles than normal HPC beams. The paper presents in detail the experimental investigations conducted on beams and pertinent conclusions drawn therefrom.

Abstract: In this paper we take the marked graph of Four Work Station Automated Manufacturing System and analyze it using sign incidence matrix. By the Analysis we found a number of places which are both siphon and trap.

Abstract: The maximum load carrying capacity of bored piles is a complex problem because it is a function of a number of factors, these factors include methods of soil exploration, ground water condition, types of grading of concrete, quantity and quality of concrete. The knowledge of Geotechnical test is important for the most economical design of the piles. This paper describes some important aspects of field investigation, design and construction of in-situ bored pile foundation, field pile load test of experience gained from the construction of the pile at a site in Aathoor in Tamil Nadu, India. The site was fully sandy soil from existing ground level. The design of bored pile under axial compression was done using Empirical formula, pile load test and by using PLAXIS 2D software. Results were compared with vertical load and settlement in this site.

Abstract: The ever increasing levels of hazardous and toxic waste generated from industrial sector hasten to implement the Sustainable Supply Chain Management (SSCM) in all sphere of the business practice. In this research article the authors developed a Supplier Selection model applying Analytic Hierarchy Process (AHP) to select Environmentally Conscious Suppliers (ECS) for one of the maintenance unit of Metropolitan Transport Corporation (MTC) providing public passenger transport service in a metropolitan city located in South India. Being a Public Sector Undertaking (PSU), the organization has the list of approved suppliers who are pre-qualified to supply the materials and spare parts required to maintain their road vehicles in accordance with the Government’s Public Procurement Policy (PPP). However the growing concern being faced by the organization in the disposal of the hazardous and toxic waste accumulated, which forces them to select suitable suppliers who will comply with the SSCM principles from their pre-qualified list of suppliers.

Abstract: Lean Six Sigma tools are widely being applied in various manufacturing units of different sizes; still there is an apprehension among the industry regarding the benefits reaped from the implementation of this tool. Under this background, this paper attempts to explain the benefits of these tools implemented in a medium scale unit to improve a particular process. The various steps involved in implementation and the results are analyzed for the purpose of this study and explained in this paper.