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1067 articles for “Investigation”
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Identification of significant parameters for the production of Jatropha biodiesel using preliminary experimentation
Abstract: The current research work is on Jatropha biodiesel for finding the significant parameters in optimum biodiesel yield. The one factor at a time approach is applied in the esterification. The trans-esterification reaction is used by mixing of Jatropha oil and ethanol in the presence of catalyst KOH. After some time two products are formed a Jatropha biodiesel and a glycerin. The density of glycerin is more as compared to biodiesel. …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 9, Issue 1, 2023 · pp. 1–7 Read article
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3D Stress State Dependent Failure Model for Fracture Simulations
Abstract: The state of stress is defined by triaxiality (hydrostatic pressure) and the lode angle parameter (deviatoric stress third invariant). The stress state not only varies with different kinds of loading but also with the location of the stress concentration, geometry of specimen and deformation. The LS-DYNA implementation of a strain-based, stress state dependent failure criterion for a ductile material is investigated through simulations of standard experiments in this paper. A …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 2, Issue 1, 2016 · pp. 44–65 Read article
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Numerical Study of Vibration Stress and Deformation of Rotating Fan Blade of a Gas Turbine
Abstract: The vibration stress caused by resonance is the main cause of failure in aircraft engine blades. The study is aimed at investigating the vibration stress of a single-stage fan blade influenced by the interaction of aerodynamic and structural behavior at multiple critical speeds. A three-dimensional finite element model of the blade was developed for the simulation of vibration stress and its subsequent effects. The blade was verified by modal test. …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 3, Issue 1, 2017 · pp. 7–20 Read article
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Wheelchair Design Analysis by Using Ethnographic Research
Abstract: This work focuses on benefits of introducing ethnographic research into specifically design engineering field. Ethnographic research is an emerging branch of research which uses scientific techniques like anthropology and sociology. Ethnographic research is done through participant observations and field work [5]. In ethnographic study, minds of people or groups of people are studied. Such method of research can be very useful in analyzing the reliability of a design of engineering …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 3, Issue 1, 2017 · pp. 21–29 Read article
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A Study on Method and Modelling of Structural Analysis and Finite Elements: A Review
Abstract: The finite element method (FEM) or finite element analysis (FEA), is a numerical method usually employed for solving engineering (structural mechanics) and mathematical physics problems. Generally, the analytical solution of these problems require the solution to boundary value problems for partial differential equations. Specimens are usually tested and analysed using finite element method (FEM) for investigating the behaviour of square concrete columns confined by fibre reinforced polymer (FRP) and sheets.
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 3, Issue 2, 2017 · pp. 29–33 Read article
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Analytical Modeling of Brick–Mortar Couplet
Abstract: This paper is a presentation of the finite element modeling of stress in a brick–mortar couplet. The brick–mortar couplet here serves as a meaningful substitute for a brick wall structure. In this work, the basic steps in derivation of the element stiffness matrix for a plane stress problem using the displacement approach are presented. The main purpose in the work is to verify the nodal displacements, which in turn would …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 6, Issue 1, 2020 · pp. 5–13 Read article
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Computerized Fluent Simulation on Earth Tube Heat Exchanger Where Air as a Flow Medium
Abstract: In the present era renewable source of energy is free and abundant in nature and it must be brought into application. Due to excessive use of air conditioning systems, the chemicals cause global warming is a serious issue. The renewable energy is the main aim and objective of an earth tube heat exchanger, which uses the thermal energy of the ground for cooling and heating of the fluent. Here, Air …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 6, Issue 2, 2020 · pp. 49–68 Read article
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Optimisation of Ratio of Center Distance of Adjacent Hole to Diameter of Pre-stressed Holes by FEA
Abstract: Residual compressive stress zone around a fastener hole is introduced by a process called pre-stressing. This is being done to reduce adverse effect of cyclic tensile stress and to restrict the fatigue crack growth due to material flaws or imperfect surfaces. The objective of this investigation is to optimize the inter-hole distance between adjacent cold expanded holes on a plate restricting the deformation of material between holes to the elastic …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 6, Issue 2, 2020 · pp. 40–48 Read article
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Consequence of Hall and Ion-slip Currents on Boundary Layer Flow with Power-law Deviation Wall Temperature
Abstract: MHD boundary layer flow in permeable medium along vertical plate with power-law deviation wall temperature in a gyratory system for the effects of Hall and ion-slip currents have investigated numerically. The ordinary differential equations are obtained from considered system of partial differential equations using usual transform. The Nachtsheim- Swigert shooting iteration method along with sixth order Runge-Kutta integration technique has employed to solve the non-dimensional system of ordinary differential equations. …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 6, Issue 2, 2020 · pp. 10–20 Read article
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Mechanical Characterization using Finite Element Analysis of Jute and E-Glass Fabric Reinforced Epoxy Composite Materials
Abstract: Recently, there has been a greater inclination towards natural fiber reinforced plastics composites (NFRPC) because these are environmentally friendly and cost-effective to synthetic fiber reinforced composites. The availability of natural fibers and ease of manufacturing have tempted researchers worldwide to try locally available inexpensive fibers and to study their feasibility of reinforcement purposes and to what extent they satisfy the required specifications of good reinforced polymer composite for tribological applications. …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 6, Issue 2, 2020 · pp. 21–39 Read article
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Numerical Analysis of Energy Absorption Ability of Polygonal Tubes under Crushing
Abstract: Honeycomb panels are used mostly in energy absorption application in engineering fields such as aerospace, transportation and packaging, etc. Honeycomb panels have good stiffness and are weight efficient structures. The honeycomb core consists of cellular cells. The core cell’s geometry of honeycomb affects the energy absorption ability. In this study, the different geometries of individual cell are analysed in tube form. Tubes of different geometries like square, pentagon, hexagon, octagon, …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 7, Issue 1, 2021 · pp. 22–30 Read article
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Dynamic and Fatigue Analysis of Engine Crank Shaft by Using FEM Approach
Abstract: The internal combustion (ICE) engine crankshaft is a high-volume manufacturing component with a complicated shape. This converts the piston's reciprocating displacement into the crank's rotating motion. In this research, an effort is made to investigate how geometry modification might increase the fatigue life of a single-cylinder engine crankshaft. SOLIDWORK software was used to construct the modelling of the original and optimised crankshaft, which was then imported for analysis into ANSYS …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 9, Issue 1, 2023 · pp. 18–36 Read article
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Vibration Control Techniques for Flexible Space Structures: A Review
Abstract: Flexible space structures are susceptible to vibrations caused by a variety of external factors, including mechanical disturbances, temperature fluctuations, and microgravity environments. It Is Essential To Manage These Vibrations To Insure The Performance, Stability, And Durability Of Space Systems. This review paper provides a thorough analysis of the most effective state-of-the-art vibration control methods used in flexible space structures. Numerous Active, Semi-Active, and Passive Control Strategies Are Examined, Along With …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 9, Issue 2, 2023 · pp. 26–31 Read article
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ALTERATION IN BLOOD OXYGEN LEVEL DUE TO BAG AND TUBE VENTILATION BEFORE SUCTIONING AMONG PATIENTS ON MECHANICAL VENTILATOR
Abstract: Patient on ventilator suffer from gag reflex and hyper ventilation during suctioning. Hyper oxygenation before and after suctioning should be performed to decrease the occurrence of arterial desaturation with suctioning. Hypoxemia can be minimized by preoxygenating the patient with 100% oxygen prior to suctioning and between each pass of the suction catheter. This is mainly done by pushing 100% oxygen with bag device. The duration of each suction pass should …
Published in International Journal of Cardiovascular Nursing · Vol. 3, Issue 1, 2017 · pp. 1–8 Read article
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Patient satisfaction on nursing care among patients undergone coronary artery bypass graft surgery
Abstract: The present study investigated the patient satisfaction on nursing care among patients undergone coronary artery bypass graft surgery, admitted in Govt. Medical College Hospital, Kottayam. A quantitative research approach and non experimental descriptive survey design was used for the study. The objectives of the study were to determine the patient satisfaction on nursing care among patients undergone coronary artery bypass graft surgery and to find out the association between the …
Published in International Journal of Cardiovascular Nursing · Vol. 3, Issue 2, 2017 · pp. 28–31 Read article
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Effectiveness of Foot Massage Upon the Level of Blood Pressure Among Elderly Hypertensive Clients
Abstract: Hypertension is one common ailment in adults WHO estimates the high blood pressure leads to over 7 million death each year, about 13% of the total death worldwide. Massage therapy will likely increase the circulation with in the blood vessels, relaxing strokes will concurrently dilate those vessels. Need for the study: Hypertension is one common ailment in adults. If people lower their blood pressure they are less likely to die …
Published in International Journal of Cardiovascular Nursing · Vol. 4, Issue 1, 2018 · pp. 22–30 Read article
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A Study to Assess the Knowledge Regarding National Early Warning Score among Staff Nurses in Selected Hospital, Neyyoor, Kanyakumari District
Abstract: Aim: The study aimed to assess the knowledge regarding National early warning score among staff nurses in selected hospital, Neyyoor, Kanyakumari District. Materials and Methods: The type of study design chosen was descriptive. The study was conducted among staff nurses in CSI Mission Hospital, Neyyoor. By using a practical sampling technique, 30 samples were chosen. Investigator developed a structured knowledge questionnaire comprising of 30 multiple choice questions for data collection. …
Published in International Journal of Cardiovascular Nursing · Vol. 8, Issue 2, 2022 · pp. 20–24 Read article
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A Descriptive Study to Find Out Risk Factors of Hypertension Among Hypertensive Patients those Attending Medicine OPD in PGIMS, Rohtak
Abstract: Background: As per the World Health Organization (WHO), approximately 1.13 billion individuals globally suffer from hypertension, with the majority, around two-thirds, residing in low-and middle-income nations. Globally, elevated blood pressure is linked to an estimated 7.5 million fatalities, constituting about 12.8% of the total number of deaths. This equates to 57 million disability-adjusted life years (DALYs) or 3.7% of the total DALYs. Objectives: Determining the linked risk elements for hypertension. …
Published in International Journal of Cardiovascular Nursing · Vol. 9, Issue 2, 2023 · pp. 31–71 Read article
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Effectiveness of Psychosocial Interventions on Depression Among Geriatric Clients
Abstract: Mental disorders in elderly persons vary widely, but a conservatively estimated 25% have significant psychiatric symptoms. In mental disorders Depression is the major important disorder affecting majority of people. Geriatric psychiatry is concerned with preventing, Diagnosing and treating psychological disorders in older adults. This study aimed to assess the effectiveness of psychosocial interventions on depression among geriatric clients. The research hypothesis formulated was there is a significant association between psychosocial …
Published in International Journal of Geriatric Nursing · Vol. 1, Issue 2, 2018 · pp. 20–23 Read article
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A Study To Assess The Effectiveness Of Hot Water Fomentation With Epsom Salt And Plain Hot Water Fomentation Among Elderly Clients With Knee Joint Pain At Selected Old Age Homes Of Amritsar
Abstract: Introduction: Knee joint pain is a major problem which affects the knee joint. Knee joint pain occurs due to many reasons like knee fracture, osteoarthritis, rheumatoid arthritis, osteomyelitis, osteoporosis, etc. It starts from any bone of the knee, i.e. femur, tibia, and fibula, kneecap (patella), ligaments and cartilage (meniscus) of the knee. Most of geriatric people get affected by chronic knee joint pain, and knee joint pain interrupts daily activity …
Published in International Journal of Geriatric Nursing · Vol. 2, Issue 2, 2019 · pp. 43–74 Read article