Shanti Kiran Zade, Suresh Babu V. and Sai Srinadh K.V.
The purpose of this study is to manufacture test boards for re-enacting plant or field situations where vacuum chamber for expelling gas bubbles and autoclave equipment would not…
Abstract
Purpose
The purpose of this study is to manufacture test boards for re-enacting plant or field situations where vacuum chamber for expelling gas bubbles and autoclave equipment would not be accessible. This research focuses on the examination and enhancement of tensile strength for the nanocomposites consisting of uniaxial glass fiber mats, nanoclay (NC) and epoxy.
Design/methodology/approach
The parameters considered are the weight content of Cloisite 15A NC, the volume of glass fiber (Vgf) and the direction of glass fibers (θ). The composites are made by hand lay-up technique and tested according to ASTM D 638 standard. Taguchi L9 orthogonal array is used to design the experiments.
Findings
The results imply that the orientation of fibers exhibited high significance with a p-value of 0.001 for the upgrade of strength. NC percentage and the volume of fiber have a low effect as the p-values obtained were 0.375 and 0.294. Confirmation tests were performed at the optimal levels of parameters and the outcomes were in the permissible range of the anticipated values of S/N ratio and mean tensile strength. The negligible effect of nanoclay is due to the lack of infusion of resin into the d-spacing of clay layers due to the low configuration settings of mixing conditions which was confirmed by XRD studies. The negligible effect of glass fiber volume is due to the void content and lack of stress transfer between fibers uniformly due to the void content and improper mixing of nanoclay.
Research limitations/implications
The limitation of this study is that a low-speed mechanical stirrer was used to mix NC in the epoxy and the mixture was not subjected to vacuum and ultrasonication for degassing and deagglomeration.
Practical implications
These composites can be used as substitute materials in place of metallic parts in the aerospace and automobile sector. These composites can be used in civil structures instead of steel and concrete, which have low strength-to-weight ratio and where the requirement of strength is in the range of 60 to 390 MPa.
Social implications
The composites can be used in a variety of applications, for example, structural works, automotive panels and low-cost housing.
Originality/value
This research gives an idea about the combined contribution of NC, Vgf and “θ” to the improvement of tensile strength of the glass-epoxy composite.
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R.S. Ransing, Shivakumara I.S., Dipak Kumar Maiti, H.P. Rani, T.D. Gunneswara Rao and V. Suresh Babu
Hardik Bhadeshiya and Urvashi Prajapati
This chapter is focused on India's destination marketing strategies that promote religious tourism. It sheds light on the Government of India's initiatives to attract faithful…
Abstract
This chapter is focused on India's destination marketing strategies that promote religious tourism. It sheds light on the Government of India's initiatives to attract faithful tourists to sacred locations including holy temples and places of interest for spiritual pilgrims. The tourism business in India has gone through numerous phases of growth. This research reveals how the state government and central governments have stepped up their commitment to develop tourism, including religious tourism, on multiple fronts. It confirms that India can be rightly considered as the land of faith, as spirituality and religion are very prominent, as evidenced by its holy temples and landmarks, located in different regions of the subcontinent. In conclusion, it discusses about the challenges for the future, and elaborates on the opportunities related to promoting religious tourism to target faithful pilgrims and other visitors to “Incredible India.”
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B. Chitti Babu, Suresh Gurjar and Tomas Cermak
This paper aims to present a detailed investigation on the parameter estimation of a photovoltaic (PV) module by using a simplified two-diode model.
Abstract
Purpose
This paper aims to present a detailed investigation on the parameter estimation of a photovoltaic (PV) module by using a simplified two-diode model.
Design/methodology/approach
The studied PV module in this paper resembles an ideal two-diode model, and to reduce the computational time, the proposed model has a photocurrent source and two ideal-diodes and neglects the series and shunt resistances. Hence, for calculating the unknown parameters, only four parameters are required from the datasheet. Moreover, the studied model is simple and uses an easy modeling approach which is free from complexities.
Findings
The performance of the PV module is analyzed under non-standard test conditions by considering partial shading at different shaded levels, and it is found that the model has less computational time and gives accurate results.
Originality/value
The usefulness of this PV model is demonstrated with the help of several illustrative figures, and the performance of the PV module is evaluated.
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Suresh Chandra Babu, Jikun Huang, P. Venkatesh and Yumei Zhang
There is growing interest from the global development community in the role of agricultural research and extension (AR & E) systems to achieve development targets. Despite…
Abstract
Purpose
There is growing interest from the global development community in the role of agricultural research and extension (AR & E) systems to achieve development targets. Despite this interest, many smallholders in developing countries continue to lack access to updated agricultural information and reliable services. In an effort to increase the effectiveness, impact, and reach of AR & E programs, many governments have attempted to reform their national systems. The paper aims to discuss these issues.
Design/methodology/approach
This paper systematically compares the systems and reforms of AR & E in China and India in order to draw out lessons applicable to developing countries. This paper first reviews the existing literature on AR & E systems and their role in agricultural and economic development. The authors then provide a detailed review and comparative analysis of the reforms and approaches implemented in the AR & E systems of China and India. The authors apply this comparative analysis to draw out lessons that can be applied to inform the reformation of AR & E systems in developing countries.
Findings
The authors find that although both countries face similar agricultural development challenges, each took a different approach in the reformation of AR & E to address these challenges. Each country’s approaches had different impacts on the effectiveness of the system. Lessons from the reformation of the AR & E systems in China and India can be used to inform and improve the impact of AR & E in developing countries.
Originality/value
The paper examines two systems together using a set of common indicators and factors. The paper’s value comes from its usefulness in informing future AR & E reforms in other developing countries in order to increase the impact of these reforms on development outcomes.
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Janmejay Dattatraya Kulkarni, Suresh Babu Goka, Pradeep Kumar Parchuri, Hajime Yamamoto, Kazuhiro Ito and Suryakumar Simhambhatla
The use of a gas metal arc welding-based weld-deposition, referred to as wire-direct energy deposition or wire-arc additive manufacturing, is one of the notable additive…
Abstract
Purpose
The use of a gas metal arc welding-based weld-deposition, referred to as wire-direct energy deposition or wire-arc additive manufacturing, is one of the notable additive manufacturing methods for producing metallic components at high deposition rates. In this method, the near-net shape is manufactured through layer-by-layer weld-deposition on a substrate. However, as a result of this sequential weld-deposition, different layers are subjected to different types of thermal cycles and partial re-melting. The resulting microstructural evolution of the material may not be uniform. Hence, the purpose of this study is to assess microstructure variation along with the lamination direction (or build direction).
Design/methodology/approach
The study was carried out for two different boundary conditions, namely, isolated condition and cooled condition. The microstructural evolution across the layers is hypothesized based on experimental assessment; this included microhardness, scanning electron microscopy imaging and electron backscatter diffraction analysis. These conditions subsequently collaborated with the help of thermal modeling of the process.
Findings
During a new layer deposition, the previous layer also is subject to re-melt. While the newly added layer undergoes rapid cooling through a combination of convection, conduction and radiation losses, the penultimate layer, sees a slower cooling curve due to its smaller exposure area. This behavior of rapid-solidification and subsequent re-melting and re-solidification is a progressing phenomenon across the layers and the bulk of the layers have uniform grains due to this remelt-re-solidification phenomenon.
Research limitations/implications
This paper studies the microstructure variation along with the build direction for thin-walled components fabricated through weld-deposition. This study would be helpful in addressing the issue of anisotropy resulting from the distinctive thermal history of each layer in the overall theme of metal additive manufacturing.
Originality/value
The unique aspect of this paper is the postulation of a generic hypothesis, based on experimental findings and supported by thermal modeling of the process, for remelt-re-solidification phenomenon followed by temperature raising/lowering repetitively in every layer deposition across the layers. This is implemented for different types of base plate conditions, revealing the role of boundary conditions on the microstructure evolution.
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Rama Rao Narvaneni and K. Suresh Babu
Software reliability growth models (SRGMs) are used to assess and predict reliability of a software system. Many of these models are effective in predicting future failures unless…
Abstract
Purpose
Software reliability growth models (SRGMs) are used to assess and predict reliability of a software system. Many of these models are effective in predicting future failures unless the software evolves.
Design/methodology/approach
This objective of this paper is to identify the best path for rectifying the BFT (bug fixing time) and BFR (bug fixing rate). Moreover, the flexible software project has been examined while materializing the BFR. To enhance the BFR, the traceability of bug is lessened by the version tag virtue in every software deliverable component. The release time of software build is optimized with the utilization of mathematical optimization mechanisms like ‘software reliability growth’ and ‘non-homogeneous Poisson process methods.’
Findings
In current market scenario, this is most essential. The automation and variation of build is also resolved in this contribution. Here, the software, which is developed, is free from the bugs or defects and enhances the quality of software by increasing the BFR.
Originality/value
In current market scenario, this is most essential. The automation and variation of build is also resolved in this contribution. Here, the software, which is developed, is free from the bugs or defects and enhances the quality of software by increasing the BFR.
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Travis W. Provance, Suresh Babu Ramisetty, Michael Joseph Urick and Kelly A. Wieczorkowski
The purpose of this paper is to conceptually explore building a culture of excellence from the ground up as well as evolving a current culture to one more focused on excellence.
Abstract
Purpose
The purpose of this paper is to conceptually explore building a culture of excellence from the ground up as well as evolving a current culture to one more focused on excellence.
Design/methodology/approach
This study reviewed extant research related to organizational cultures and cultures of excellence that have implications for building or evolving into these types of cultures.
Findings
The findings of this study suggest that the “people side” of organizations is crucial to forming a culture of excellence. Specific people-oriented considerations to forming such a culture include leveraging leaders and understanding other influences including diversity as well as external aspects. Changing culture must occur at the assumptions (and not just artifacts) level. Furthermore, there are many barriers to building a culture of excellence, many of which are also related to an organization’s people.
Research limitations/implications
A qualitative grounded theory approach whereby researchers asked organizational members to define “culture of excellence” could help build a clearer model for the formation of cultures of excellence. Quantitative approaches should also test how successful the influencers, noted in this study are in creating cultures of excellence. This study’s conceptual links between cultures of excellence and performance should also be tested empirically.
Practical implications
This paper provides practitioners insight into the importance of culture and considerations for how to change an organizational culture.
Social implications
This paper advocates for the importance of social considerations in the workplace regarding creating a culture of excellence.
Originality/value
To the best of the authors’ knowledge, this paper is the first that discusses creating a culture of excellence. Furthermore, it is one of only a handful of articles that links people to excellence.
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Jogy George and N.R. Suresh Babu
Disruptive behavioural disorders (DBD) of children are a major concern for teachers while engaging in the classroom. Correspondingly, primary school teachers should be…
Abstract
Purpose
Disruptive behavioural disorders (DBD) of children are a major concern for teachers while engaging in the classroom. Correspondingly, primary school teachers should be well-equipped to manage child learners with DBD. This study explored what factors influence primary school teachers' access, utilisation and appraisal of vital health information for managing students with DBD.
Design/methodology/approach
The data used in the current paper was collected through in-depth interviews with teachers working in public lower primary schools in central Kerala, India. The refined data was then analysed thematically.
Findings
Four focal themes emerged from the input data: bridging social capital, classroom strategies, trained incapacity and role strain. The study found that the charismatic authority of teachers influences child learners with behavioural disorders only in the short term. Additionally, the study asserts that in-service teacher training programmes often overlook the behavioural and social components of health.
Originality/value
This study significantly advances our understanding of how the social embeddedness of health literacy among teachers influences their management of child learners with behaviour disorders. Specifically, it unravels the unique ways teachers utilise social networks to access health information (how), identifies the effective strategies they employ (what) and elucidates the underlying reasons for these strategies (why). The merit of this study lies in its comprehensive analysis of the interplay between social structures, social networks and health literacy, providing novel insights into practices followed by teachers in managing child learners with DBD.
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M. Vykunta Rao, Srinivasa Rao P. and B. Surendra Babu
Vibratory weld conditioning parameters have a great influence on the improvement of mechanical properties of weld connections. The purpose of this paper is to understand the…
Abstract
Purpose
Vibratory weld conditioning parameters have a great influence on the improvement of mechanical properties of weld connections. The purpose of this paper is to understand the influence of vibratory weld conditioning on the mechanical and microstructural characterization of aluminum 5052 alloy weldments. An attempt is made to understand the effect of the vibratory tungsten inert gas (TIG) welding process parameters on the hardness, ultimate tensile strength and microstructure of Al 5052-H32 alloy weldments.
Design/methodology/approach
Aluminum 5052 H32 specimens are welded at different combinations of vibromotor voltage inputs and time of vibrations. Voltage input is varied from 50 to 230 V at an interval of 10 V. At each voltage input to the vibromotor, there are three levels of time of vibration, i.e. 80, 90 and 100 s. The vibratory TIG-welded specimens are tested for their mechanical and microstructural properties.
Findings
The results indicate that the mechanical properties of aluminum alloy weld connections improved by increasing voltage input up to 160 V. Also, it has been observed that by increasing vibromotor voltage input beyond 160 V, mechanical properties were reduced significantly. It is also found that vibration time has less influence on the mechanical properties of weld connections. Improvement in hardness and ultimate tensile strength of vibratory welded joints is 16 and 14%, respectively, when compared without vibration, i.e. normal weld conditions. Average grain size is measured as per ASTM E 112–96. Average grain size is in the case of 0, 120, 160 and 230 is 20.709, 17.99, 16.57 and 20.8086 µm, respectively.
Originality/value
Novel vibratory TIG welded joints are prepared. Mechanical and micro-structural properties are tested.