Mechanical characterization of aluminum-based hybrid metal matrix composites
Metal Matrix Composites (MMC) are characterized by lightweight, better specific strength and wear resistance properties. Due to their superior properties, MMCs have good potential for application in the automotive and aerospace industries. Among many types of MMCs, the most popular types are aluminum alloys reinforced with Al2O3 and MgO particulates since they provide favorable properties with only a minimum increase in density over the base alloy. The basic purpose of adding reinforcement into the metal matrix is to increase the yield strength, tensile strength, and hardness at ambient temperatures. Many of the components made out of MMCs are operated in applications, where they are subjected to relative sliding and rolling motion with respect to the surfaces of the mating components. The sliding wear of the composites is a complex process involving not only mechanical but also thermal and chemical interactions between the surfaces in contact. The Al 6061 Hybrid composites prepared by stir casting liquid metallurgy route with the percentage of 2% wt of Aluminium Oxide and 2% wt of Magnesium Oxide and the combination of 1% wt of Aluminium Oxide and 1% wt of Magnesium Oxide for Hybrid material. Hence, composites with Al2O3 and MgO with Al-6061 as reinforcement are likely to overcome the cost barrier as well as the different physical and mechanical properties for widely used in the automotive and spacecraft applications.
Published by: Gourav G Shetty, Adarsh Kumar, Adithya Kumar, Adithya V Hegde, Lingaraj Ritti
Author: Gourav G Shetty
Paper ID: V4I3-1426
Paper Status: published
Published: May 16, 2018
Analysis of isotropic plates for finite element large amplitude free flexural vibration
Structural components are generally subjected to dynamic loadings in their working life. Very often these components may have to perform in the severe dynamic environment wherein the maximum damage results from the resonant vibration. Susceptibility to fracture of materials due to vibration is determined by stress and frequency. The maximum amplitude of the vibration must be in the limited for the safety of the structure. Hence vibration analysis has become very important in designing a structure to know in advance its response and to take necessary steps to control the structural vibrations and its amplitudes. The non-linear or large amplitude flexural vibration of plates has received considerable attention in recent years because of the great importance and interest attached to the structures of low flexural rigidity. These easily deformable structures vibrate at large amplitudes. The solution obtained based on the lineage models provide no more than a first approximation to the actual solutions. The increasing demand for more realistic models to predict the responses of elastic bodies combined with the availability of super computational facilities has enabled researchers to abandon the linear theories in favor of non-linear methods of solutions. In the present investigation, large amplitude vibration of several rectangular and skew plates has been studied using an isoparametric quadratic plate bending element for the finite element method. The formulations have incorporated the shear deformation of the plates. Plates with various boundary conditions have been considered in the study. The effect of variations in the Poisson’s ratio, thickness parameter & plate aspect ratio on the non-linear frequency ratio has also been included in the research.
Published by: Gajendra Singh Bhadoriya, Satish Parihar
Author: Gajendra Singh Bhadoriya
Paper ID: V4I3-1429
Paper Status: published
Published: May 16, 2018
A review of optimization on turning process parameters for surface roughness in dry and wet condition of AISI 1045 steel using Taguchi method
The challenge of recent machining industries is reduced lead time and increase production rate in order to maintain their competitiveness. The mechanical manufacturing industries are regularly challenged for achieving higher productivity and high-quality products in order to remain competitive. The desired shape, size and finished ferrous and non- ferrous materials are conventionally produced by turning the preformed blanks with the help of cutting tools that moved past the workpiece in a machine tool. Among various cutting processes, turning process is one of the most fundamental and most applied metal removal operations in a real manufacturing environment. This literature review compiles different work presented on optimization of process parameters and concludes the most significant cutting parameters and most frequently used optimization techniques for improving surface finish. The cutting parameters like Cutting speed, Feed rate and Depth of cut are taken into consideration.
Published by: Bharat Jhariya, Arun Patel
Author: Bharat Jhariya
Paper ID: V4I3-1435
Paper Status: published
Published: May 16, 2018
Steel structures, pushover analysis
Steel structure has an important role in construction Industry In last decades. To perform well under seismic loads it is necessary to design a structure. According to the provisions of the current Indian code (IS 800 -2007) the seismic performance of a multi-story steel structure building has designed. By introducing Steel bracings in the structural system the shear capacity of the structure can be increased to arrange Steel bracings such as D, K, and V type eccentric bracings there are “n” numbers of solutions for various types of eccentric bracings as per the IS 800- 2007 a typical six-story steel structure building is generated. In the present study D, K, and V types of eccentric bracings are taken into consideration. Through nonlinear static analysis performance of each structure is studied.
Published by: Bhavna Saini, Satish Parihar
Author: Bhavna Saini
Paper ID: V4I3-1432
Paper Status: published
Published: May 16, 2018
Self-supported steel chimney analysis as per Indian standard
Most of the industrial steel chimneys are round cross-sections with column structures. Because of its frame behavior under lateral dynamic loading Geometry of a self-supporting steel chimney shows an important role. It is primarily responsible for the stiffness parameters of the chimney this is because of geometry. However, basic dimensions of industrial self-supporting steel chimney are generally derived from the associated environmental conditions, such as height, diameter at the exit, etc. Design code (IS-6533: 1989 Part 2) imposes several criteria on the geometry (top-to-base diameter ratio and height-to base diameter ratio) of steel chimneys to ensure the desired failure mode. To justify the code criteria with regard to basic dimensions of industrial steel chimney is the objective of the present study.
Published by: Nagendra Singh, Satish Parihar
Author: Nagendra Singh
Paper ID: V4I3-1431
Paper Status: published
Published: May 16, 2018
Fragility curves construction for an RC frame
The Seismic fragility curve is mainly applied to evaluate the planning of pre-earthquake disaster and recovery from post-earthquake. It provides the conditional probability of structural response to earthquake loads as a function of ground motion intensity. The traditional methods of generating fragility curves include a large number of computational models that represents the analysis of earthquake time history and inherent variation in the properties of materials of a particular building type. There are several Response surface methods available in which HDMR i.e. High Dimensional Model Representation which can express the input-output relation of complex computational models. This input-output relation can minimize the procedures of the expensive computations in problems like development of fragility curve. This technique was first applied by Unnikrishnan et al. (2012) in fragility evaluations and he demonstrated its computational efficacy compared to Monte Carlo method which is computationally intense. In this study, an HDMR response surface method is used to develop the fragility curve of an RC Frame. There are many simplified approaches which are quite easy on computational terms for fragility development of curve. Cornell et al (2002) offered such method that assumes a law model between the earthquake’s intensity and damage parameters. The study showcases the Fragility Curves assessment by using HDMR and its computational efficacy with reference to one of the methods used by Cornell et al (2002).
Published by: Shivakant Awasthi, Satish Parihar
Author: Shivakant Awasthi
Paper ID: V4I3-1430
Paper Status: published
Published: May 16, 2018
