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The purpose of this paper is to determine the feasibility of identifying the creep rupture of reactor cladding tubes using acoustic emission technique (AET).

The creep rupture tests were carried out by pressuring stainless steel capsules upto 6 MPa at room temperature and then heating continuously in a furnace upto rupture. The acoustic emission (AE) signals generated during the creep rupture tests were recorded using a 150 kHz resonant sensor and analysed using AE Win software.

When rupture occurs in the pressurized capsule tube representing the cladding tube, AE sensor attached to a waveguide captures the mechanical disturbance from the capsule and these data can be advantageously used to identify the creep rupture event of the cladding tube.

The creep rupture data of fuel clad tube is very important in design and for smooth operation of nuclear reactors without fuel pin failure in reactors.

AE is an advanced non-destructive evaluation technique. This technique has been successfully applied for on-line monitoring of creep rupture of the reactor cladding tube which otherwise could be detected by thermocouple readings only.

The purpose of this paper is to present the results of acoustic emission (AE) and ultrasonic inspection of two H₂S storage tanks carried out in a heavy water plant, in order to characterize point type defects observed during earlier ultrasonic inspection and to ensure that these defects are not growing during hydrotesting of the tanks.

Using multiple AE sensors and AE source location methodology, the entire tank could be covered to detect and locate any dynamic sources of AE associated with local plastic deformation and/or growing discontinuities from any part of the tank during the hydrotest. For confirmation of the results obtained by AE, ultrasonic inspection on the tanks and on virgin plates from which the tanks were manufactured, were carried out.

The AE signals generated during first pressurisation are attributed to the micro yielding of the material of the tanks. A few scattered AE events were observed at a few locations during the hydrotesting of the tanks and these are due to structural and rubbing noise. During hold periods and repressurising cycle of the hydrotesting, no detectable AE events were observed and this confirmed the absence of any growing discontinuity in the tanks during the hydrotesting. Ultrasonic inspection on the tanks and on virgin plates confirmed that the point type defects detected are manufacturing defects and not formed during service life.

The combined results from AE and ultrasonic techniques confirmed the structural integrity of the tanks and ensured their healthiness for continued operation.

The paper brings out the use of AE and ultrasonic techniques for monitoring hydrotesting of storage tanks of a heavy water plant. The storage tanks where point type defect indications were reported during previous ultrasonic inspection and whether these defects are growing during hydrotesting of the tanks or not, were required to be known before the tanks are put in to further service. AE signals collected during pressurising and repressurising cycles of the hydrotest and subsequent inspection by ultrasonic confirmed the vessels to be free from growing defects during the hydrotest and provided baseline data for future inspection.

The purpose of this paper is to examine the effect of reciprocating compressor speeds and valve conditions on the roor-mean-square (RMS) value of burst acoustic emission (AE) signals associated with the physical motion of valves. The study attempts to explore the potential of AE signal in the estimation of valve damage under varying compressor speeds.

This study involves the acquisition of AE signal, valve flow rate, pressure and temperature at the suction valve of an air compressor with speed varrying from 450 to 800 rpm. The AE signals correspond to one compressor cycle obtained from two simulated valve damage conditions, namely, the single leak and double leak conditions are compared to those of the normal valve plate. To examine the effects of valve conditions and speeds on AE RMS values, two-way analysis of variance (ANOVA) is conducted. Finally, regression analysis is performed to investigate the relationship of AE RMS with the speed and valve flow rate for different valve conditions.

The results showed that AE RMS values computed from suction valve opening (SVO), suction valve closing (SVC) and discharge valve opening (DVO) events are significantly affected by both valve conditions and speeds. The AE RMS value computed from SVO event showed high linear correlation with speed compared to SVC and DVO events for all valve damage conditions. As this study is conducted at a compressor running at freeload, increasing speed of compressor also results in the increment of flow rate. Thus, the valve flow rate can also be empirically derived from the AE RMS value through the regression method, enabling a better estimation of valve damages.

The experimental test rig of this study is confined to a small pressure ratio range of 1.38–2.03 (free-loading condition). Besides, the air compressor is assumed to be operated at a constant speed.

This study employed the statistical methods namely the ANOVA and regression analysis for valve damage estimation at varying compressor speeds. It can enable a plant personnel to make a better prediction on the loss of compressor efficiency and help them to justify the time for valve replacement in future.

The study aims to investigate the impact of financial inclusion (FI) on environmental quality and the mediating role of industrialization (IZ). In addition, these relationships among the counties with different levels of income and carbon emissions were also analyzed.

This paper used the International Monetary Fund database for indicators of FI. The environmental indicators were obtained from the World Bank database for a panel of worldwide countries from 2004 to 2019. Separate indices of environmental sustainability (ES) and environmental degradation (ED) were created by using principal component analysis . The generalized method of moments regression was applied to examine the relationship between variables.

The study found full mediation of IZ between FI and ES, whereas partial mediation between FI and environmental degradation. The results were found robust against alternative measures of carbon emissions. Furthermore, the study also bifurcated the sample according to the level of income and carbon emission. It was found that FI plays a positive role in the betterment of environmental quality for high-income countries, while a negative role in upper-middle-income, lower-middle-income and low-income countries. Besides, FI has a negative role in the ES of the countries having higher or lower carbon emission levels.

Empirically this study contributes by creating two different novel measures of ES and environmental degradation, in contrast to other studies that solely relied on carbon emission. Contrary to previous studies, this study suggests that FI is not solely responsible for environmental damages, and IZ is the key channel by which FI shifts its impact on ES. Moreover, for environmental degradation, there are some other channels involved that need to be investigated further. This study has also noted that the relationship between FI and ES is context-dependent. Theoretically, this paper contributes to the literature by using ecological modernization theory in the nexus of FI, IZ and environmental quality.

Asia is the largest and most densely inhabited region in the world. Despite exhibiting an extremely expeditious economic growth, the majority of the world population categorized as poor resides in Asia, with more than a billion people financially excluded. This study aims to assess how social sustainability (SS) may increase financial inclusion (FI) and maintain financial stability (FS) in Asia.

Established on the stakeholder theory, the study analyzed the association among SS, FI and FS in Asia, employing a generalized method of moment’s estimation. The mediation of FI was also investigated in the relationship between SS and FS. Moreover, this study has analyzed the alternative proxies for the variables of interest to ensure dynamic results.

The findings point toward a positive association among SS, FI and FS. Furthermore, FI is observed to be undertaking a partial mediating role between SS and FS.

This study emphasizes that both SS and FI have individual parts in the amelioration of FS in Asia, whereas previous studies implied that FI is a mere tool for stimulating SS. Hence, Asian policymakers must keep these outcomes in mind due to their simultaneous contribution to FS.

The relationship between SS, FI and FS has received little attention in the literature. No previous study has deduced that increasing SS may instigate an increase in FI and FS. Additionally, quite contrary to previous studies that relied on narrow indicators, this study develops a broad measurement of SS by considering a wide range of crucial indicators for a sustainable society.

This chapter explores the concept of corporate social responsibility (CSR) from an Islamic Shari'ah-compliant perspective. It provides a comprehensive literature review on CSR with an explicit focus on the Islamic perspective of CSR, Islamic models of CSR, CSR practices in conventional and Islamic banks, and the consequences of CSR to Islamic banks. This chapter's main contribution lies in considering the current CSR literature from a Shari'ah perspective. Likewise, it identifies gaps in the current literature and suggests potential areas for future research. This chapter attempts to improve the understanding of how Islamic banks integrate social responsibility into their operations. The insights from this chapter are helpful to practitioners and academic scholars in Islamic finance, accounting, and CSR. This chapter emphasizes the importance of incorporating Islamic values and principles into CSR practices and encourages further research and investigation in this area.

This paper aims to investigate the effects of eliminating Riba in foreign currency transactions. Riba or interest arises when foreign currencies are bought and sold at different rates. From the Islamic perspective, the difference between the buying and selling rates of foreign exchange will constitute Riba. Also, this paper examines the effects of eliminating such Riba on major macroeconomic variables.

This study is based on the hadith which imply that if buying and selling rates of currencies or foreign exchanges are same, i.e. if one sells BD1 = Dh10 and Dh10 = BD1 on spot, there will be no Riba. This can be guaranteed if the Islamic banking system introduces the technology, often known as FinTech interest-free foreign exchange bank machines (IFfexBM), which will automatically dispense BD10 for Dh100 and vice-versa, both locally and globally, and it will have tremendous positive effects in the economy. Furthermore, the effects of introducing FinTech for eliminating Riba will be analyzed on economic and international trade activities by using aggregate expenditure (AE) and aggregate output model within the tenets of Islamic principles.

If Islamic banks (IBs) can introduce FinTech global network system where any client can buy or sell foreign currency at the same rate without any markup, it will increase the market share for IBs by increasing the number of customers and number of branches, and it will increase the inflow of funds and volumes of transactions, especially in international trade, global financial transactions and cross-border shopping. Such an increase in transactions will increase AE and AE will continuously shift up. Such an upward shift will have positive effects on equilibrium output, employment and prosperity.

This is, perhaps, one of the latest attempts to eliminate Riba from foreign exchange transactions by introducing FinTech IFfexBM in each and every locality. Such elimination of Riba will not only reduce the cost of cross-border transactions but it will also reduce cost in international trade and financial transactions among nations, and therefore, it will have expansionary effects on equilibrium output, employment and global prosperity.

This paper critically reviews and analyzes the trends in waqf studies within the Islamic economics literature. It analyzes the recent developments and debates in waqf reform and advances the argument for prioritizing research on waqf economics; the waqf dimension that is concerned with modelling how to utilize it to enhance productivity, consumption, redistribution, investment and saving, and generally contribute sustainably towards poverty reduction, economic empowerment and development.

The paper is conceptual in nature, focusing on a systematic historical analytical review of waqf studies in Islamic economics literature.

Despite the documented historic role of waqf in constructing the Muslim socio-economic architecture as the third economic sector and a mechanism for civilizational development and renewal, it received little attention in the early writings on modern Islamic economics. While the past one decade has witnessed a renewed interest in waqf research, most studies focus on its legal, juristic and administrative aspects in addition to the nostalgic reflections on its past glories. Little attention is comparatively given to the socio-economic aspect, which represents the actual raison d’être for its institutionalization.

An important task ahead of the current generation of Islamic economists is to formulate waqf-based development models that are rooted in proper diagnosis and deep understanding of the current socio-economic realities of the OIC member countries for the purpose of uplifting living standards and stimulating sustainable socio-economic development.

The paper contributes to the debate on priorities in waqf studies and practice and can trigger further discourses and research on the future of research in waqf economics.

Mycelium is an upcoming bio-based alternative material that has various applications in different industries. Mycelium materials used as composites, leather, construction materials and some are even available for commercial purposes. However, there was not much research found when it came to the application of mycelium as a textile alternative. The purpose of this paper is to examine the potential of mycelium in the textile industry and its possible applications.

This review consolidates literature that refers the two major methods used in fungal mycelium production namely; as a composite and as a pure self-grown mycelium sheet. The study compared the current research status in this respective field and reported the scope in the pure mycelium development.

The results of the review reported that several research works are performed in composite production with different feedstock. The production methods and product development steps were well established for several applications from home utilities to construction materials. Whereas, in the case of self-grown mycelium sheet production only limited research works were found. Though the possibilities of engineered composite sheets are developed with various properties, research on self-grown pure mycelium sheets are at infant stage. Sensitive production methods, lower tensile, tearing, poor handle properties with brittle structure and non-uniformity in thickness are noted as limitations. Sustainable nature, self-grown three-dimensional nano-fibril network with porous structure are found to be advantageous.

The solid culture method was identified as a potential method to develop a sheet-like self-grown mycelium with different dimensions. The review results clearly show the lack of research in the direct application of self-grown pure mycelium area concerning feedstock material, fungal species selection and characterization of the developed product. Addressing the existing limitations will yield a sustainable textile material for fashion and textile industry with great potential.