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Due to rapid growth in global warming issues, researchers are focusing on alternative materials which will be replacing existing nonbiodegradable. This research article aims to study the mechanical...
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The financial and industrial growths require safe, sustainable resources of energy. In today’s world the most important resource for mankind is energy and also it plays significant role in sustainable development of mankind. The present... more
The financial and industrial growths require safe, sustainable resources of energy. In today’s world the most important resource for mankind is energy and also it plays significant role in sustainable development of mankind. The present work shows the production of Used Temple Oil Methyl Ester (UTOME) and an effort was done to maximize the percentage of yield by using different parameters like catalyst, reaction time and molar ratio. The various percentage of catalysts used are 0.75 and 1.15% of NaOH. The different reaction time is from 35 to 105 min at the range of 15 min. The two different molecular ratios 6:1 and 4.5:1 are used. The physical and chemical properties were determined according to ISO 9001: 2015 which are well within the limits. The maximum yield of UTOME was round to be 94.5% at 95 reaction time and 6:1 molar ratio with 1.15% of catalyst.
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125 Abstract— The concept of Remaining Useful Life (RUL) is utilized to predict life-span of components with the purpose of minimizing catastrophic failure events. As customer demands for dynamically controlled systems it is necessary to... more
125 Abstract— The concept of Remaining Useful Life (RUL) is utilized to predict life-span of components with the purpose of minimizing catastrophic failure events. As customer demands for dynamically controlled systems it is necessary to have a continuous monitoring system which tracks, identifies trends and sources of component degradation prior to failure. The early warning capability seeks to detect, isolate and estimate the severity of faults based on fault propagation and detected degradation of a machine or a component to predict its RUL. Typically RUL is random and estimated from available sources of condition and health monitoring information. RUL of a device is also essential in remanufacturing engineering in the decision for parts to be taken out of service for remanufacturing. This review is centered on various methods of predicting RUL of a machine or a component. Some of the methods for predicting RUL are analyzed with the case studies such as Automotive Component, Rota...
Today world alternative source of energy given importance due to gradual depletion of fossil fuel reserves. The vegetable oils can be used as an alternative to diesel in CI engines. The present review covers the various aspects of... more
Today world alternative source of energy given importance due to gradual depletion of fossil fuel reserves. The vegetable oils can be used as an alternative to diesel in CI engines. The present review covers the various aspects of biodiesel fuel derived from Surahonne (Calophyllum inophyllum linn) and Cottonseed (gossypium) oil. The major disadvantage of vegetable oil and their derivatives lies in their viscosity and cause the effect on engine performance. The review reported that the preheating is the most suitable technique along with blending among the methods used for viscosity reduction. The present review focussed on the recent works attempted for preheated vegetable oil and their derivatives, preheated air and the effect of preheating on the engine performance and emissions.
Polymer matrix composites (PMCs) are finding applications in many high tech areas. With the increased use of these materials in erosive work environments, it has become extremely important to investigate their erosion characteristics... more
Polymer matrix composites (PMCs) are finding applications in many high tech areas. With the increased use of these materials in erosive work environments, it has become extremely important to investigate their erosion characteristics intensively. The solid particle erosion behaviour of polymer matrix composites has been reviewed in this paper. The experimental studies of erosion of PMCs and theoretical models proposed to describe the erosion rate were emphasised. Implementation of Design of Experiments (DOE) and Finite Element Analysis (FEA) techniques in analysing the erosion characteristics of PMCs were also presented. Scope and recommendations were given to solve some open questions related to erosion studies of PMCs. Solid particle erosion is a general term used to describe mechanical degradation (wear) of any material subjected to a stream of erodent particles impinging on its surface. Damage caused by erosion has been reported in several industries for a wide range of situatio...
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The composite materials have certain distinct properties compared to other materials in respect of weight, durability, corrosion resistance, sound and warmth insulation. Further due to low cost and flexibility, it has registered... more
The composite materials have certain distinct properties compared to other materials in respect of weight, durability, corrosion resistance, sound and warmth insulation. Further due to low cost and flexibility, it has registered substantial growth in automotive industry. In the present scenario, the increasing demand for higher strength to weight ratio of materials has increased. It requires a low tolerance to damage and requires a tighter control of the integrity of the components by periodic inspections using non-destructive techniques. It is more sensitive to internal defects and damages which differs from metallic. The damage occur during service due to operational loading, aging, chemical attack, mechanical vibration, changing of ambient conditions and shocks. Presently, automotive industries are highly focused in structural health monitoring, looking for the early damage detection. The risk of human lives loss is always associated with structural parts as its failure is unpred...
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Structural performance and safety in composites have become a major issue of modern engineering technology. The composite structure fails catastrophically due to lack of monitoring. The use of composite structures in automotive vehicles... more
Structural performance and safety in composites have become a major issue of modern engineering technology. The composite structure fails catastrophically due to lack of monitoring. The use of composite structures in automotive vehicles has increased drastically in recent years. To overcome this problem, damage detection at early stage is a serious concern in the structures. Among the various Structural Health Monitoring (SHM) techniques, the vibration-based methodologies have emerged as one of the potential monitoring techniques. In the paper, Modal Strain Energy (MSE) is used to inspect the artificially created crack in Mono Composite Leaf Spring (MCLS). Initially, eigenvalues and eigenvectors are determined for modeled baseline and cracked leaf spring using MATLAB programming. Then, element damage indices are calculated using stiffness of both springs. Finally, elemental modal strain energies and its variation among both the spring are determined. The presence of crack is identified based on variation of natural frequencies, location by damage index and severity by sensitivity of MSE. It has been concluded that the proposed method precisely evaluates the presence, position, and severity of crack.
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The attractiveness of glass is something that occupied the world market with a unique claim. It has many applications that go beyond the provision of visual aesthetics, which includes a view of the inside and out. Due to extreme levels of... more
The attractiveness of glass is something that occupied the world market with a unique claim. It has many applications that go beyond the provision of visual aesthetics, which includes a view of the inside and out. Due to extreme levels of clarity, structural glazing may be so transparent that it may go unnoticed by design or make a strong visual impact such as the focal point of a building. This paper focused on structural glass with various laminated/laminated conditions that were used to investigate the Dynamic Mechanical Properties. The storage modulus (G'), loss modulus (G'') and damping factor (tan delta) were determined at various levels, ranging from room temperature to elevated temperatures (250 °C) to understand the behavior of glass structure with and without laminated glass over a range of temperatures. The G' & G'' were tested to understand the effect of bonding, fracture behavior between the pure glass and laminated glass to observe the response ...
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The present work investigated the effect of chemical treatment on the mechanical properties of plain-woven banana fabrics reinforced with a polyvinyl alcohol (PVA) biodegradable matrix. Woven banana fabrics were chemically treated with... more
The present work investigated the effect of chemical treatment on the mechanical properties of plain-woven banana fabrics reinforced with a polyvinyl alcohol (PVA) biodegradable matrix. Woven banana fabrics were chemically treated with different concentrations (0·5, 1·0, 2·0, 3·0 and 4·0%) for 4 h at room temperature. The banana fabrics and PVA were used in ratios of 55 and 45% weight fractions, respectively. Composites were prepared using the hand-layup method. The samples were tested according to different ASTM standards for tensile, flexural and impact strength. The results showed that tensile, flexural and impact properties improved with potassium permanganate (KMnO4) treatment. The fabrics treated with 1·0% potassium permanganate showed very good mechanical properties compared with the untreated fabrics and the 0·5, 2·0, 3·0 and 4·0% treated fabrics. The 1% treated fabric composite showed a 68·07% increase in tensile strength compared with the untreated fabric composite. Scanni...
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Structural health monitoring (SHM) is one of the non destructive evaluations universally accepted to detect defect or damage in composite structures. The paper deals with detection of inter laminar delamination problems in composite mono... more
Structural health monitoring (SHM) is one of the non destructive evaluations universally accepted to detect defect or damage in composite structures. The paper deals with detection of inter laminar delamination problems in composite mono leaf spring during service conditions by vibration techniques. The delamination detection is crucial issue as it leads to catastrophic failure. The vibration parameters such as natural frequency and modes shapes are evaluated for healthy and delaminated spring. It has been observed that some mode shapes are found to be more sensitive to the delaminated region. The presence, location and severity of delamination are simulated and validated by experimental modal analysis for both the spring and found closer approximation with each other.
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ABSTRACT
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ABSTRACT
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ABSTRACT
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The present work investigating the effect of acetylation treatment on the plain woven banana fabric (PWBF) in a polyvinyl alcohol (PVA) matrix, which includes the banana fabric strength and fabric pull-out. This type of fabric treatment... more
The present work investigating the effect of acetylation treatment on the plain woven banana fabric (PWBF) in a polyvinyl alcohol (PVA) matrix, which includes the banana fabric strength and fabric pull-out. This type of fabric treatment is normally used to improve the mechanical and thermo-mechanical behavior of composites. The raw PWBFs are treated with different acetylation percentages of concentrations (i.e., 2, 4, 6, 8, and 10) for 4 h at room temperature. The mechanical properties (i.e., tensile, flexural, and impact), thermo-mechanical behavior (i.e., storage modulus and loss modulus), surface morphology after tensile test, and water and biodegradability test of treated and untreated PWBF were investigated. The experimental results showed that the acetylation treatment was able to successfully remove hemicellulose, lignin, moisture content, waste impurities, and other unwanted particles from the PWBF surface and improve the mechanical and thermo-mechanical behavior of PWBF. In order to investigate PWBF/PVA internal bonding, the nature of fabric pull-out analysis was also carried out. It was found that the PWBF/PVA interfacial behavior increased after the acetylation treatment. The experimental results showed that treated composite was taken more time to complete biodegradable in natural soil and untreated composite specimen absorbed more water rate. In reality, the most favorable acetylation concentration was 6% in terms of maximum strength, a strong area of contact and bonding between PWBF/PVA, this is usually due to the reduction of hemicellulose, lignin, moisture content, impurities, and amorphous parts of the fabric. Graphical abstract