A thermodynamic framework to analyze the thermal shock response in an anisotropic hollow cylinder with energy dissipation

2018 ◽  
Vol 14 (3) ◽  
pp. 410-430 ◽  
Author(s):  
Siddhartha Biswas ◽  
Soumen Shaw
Keyword(s):  
Energy Dissipation ◽  
Thermal Shock ◽  
Hollow Cylinder ◽  
Integral Transform ◽  
Generalized Thermoelasticity ◽  
High Rate ◽  
Content Type ◽  
Short Period ◽  
Shock Response ◽  
Consistent Manner

Purpose The purpose of this paper is to analyze the thermal shock response on the deformation of circular hollow cylinder in a thermodynamically consistent manner. Design/methodology/approach The investigation is carried out under the light of generalized thermoelasticity theory with energy dissipation. In order to obtain the analytical expressions of the components of stress and strain fields, appropriate integral transform technique is adopted and the salient features are emphasized. Findings It has been observed that the existence of energy dissipation can minimize the development of the stress components into the cylindrical wall. Since more amount of heat is propagate into the medium in a short period of time consequently, the medium deformed in a high rate in presence of energy dissipation. Two special phenomena are also revealed in the particular cases. Originality/value The numerical simulated results are demonstrated through a numerous diagrams and some important observations are explained. This work may be helpful for those researchers who are devoted on several types of heat or fluid flow into the pipeline made with anisotropic solids.

scholarly journals Experiencing microfinance

2018 ◽  
Vol 25 (3) ◽  
pp. 428-446 ◽  
Author(s):  
Irene Ukanwa ◽  
Lin Xiong ◽  
Alistair Anderson
Keyword(s):  
Small Businesses ◽  
Cash Flows ◽  
High Rate ◽  
African Women ◽  
Base Of The Pyramid ◽  
Economic Activities ◽  
Family Responsibilities ◽  
Content Type ◽  
Short Period ◽  
Fear And Anxiety

Purpose The purpose of this paper is to address the problem of why the poorest, most disadvantaged groups such as rural African women, benefit less from microfinance. The authors focus on the perception and experiences of ordinary rural entrepreneurial women on microfinance in a context of extreme poverty and where family responsibility and economic activities are closely intertwined. Design/methodology/approach The authors purposefully sampled 15 poor females with small businesses in two Nigerian villages. The key characteristic guiding the sampling was that the respondents had to be poor. The authors held two focus groups and ten interviews to capture their experience and understanding of microfinance. The authors used thematic analysis to establish patterns in the data. Findings For poor entrepreneurial women, a livelihood for survival, putting food on the table and paying school fees are priorities, not business growth. They see microcredit as debt and a great risk that could lead to irreversible losses. Family responsibilities for basic consumption needs of the household can affect their ability to repay loans; perceived dangers of microcredit may outweigh potential benefits. Research limitations/implications The theories, especially functionalist economic theory, do not take account of microfinance users’ experiences. Practical implications Microfinance should be aware that the poorest perceive microcredit differently and should eliminate the intimidating barriers raised to them. Instead of providing a means for the poor to alleviate poverty or coping strategies for them to manage cash flows and risks, microfinance causes fear and anxiety by demanding high rate of return in a very short period of time. Social implications The very poorest, who should be the beneficiaries of microfinance, are less likely to be able to benefit. The condition of poverty creates different realities for those at the base of the pyramid. Originality/value This research questions the neoliberal rationality assumptions that microfinance rest on; the paper fills a gap in the literature, i.e. how the potential borrowers themselves living in deep-rooted poverty perceive and experience microfinance.

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