Determining the Analysis of the Stability of Embankments against Sliding and Prediction of Sliding and Critical Factor of Safety | Chapter 08 | Novel Perspectives of Engineering Research Vol. 9

 

The ability of sloped soil or rock slopes to endure or undergo movement is referred to as slope stability. In soil mechanics, geotechnical engineering, and engineering geology, slope stability is studied. The goal of most analyses is to figure out what causes slope failure or what circumstances might cause a slope to move, resulting in a landslide. Through mitigation countermeasures, analyses are also aimed at preventing the onset of movement, slowing it down, or stopping it. The stability of slopes is affected by a variety of variables. Soil cohesion, soil friction angle, existing loads, and water surface level are some of these factors. These variables have an impact on the slip surface's shear resistance. One of the oldest approaches for estimating the critical slip surface and minimum factor of safety is the limit equilibrium method (LEM). The impacts of soil material parameters such as soil specific weight (), cohesion (C), angle of internal friction (), geometric slope parameters such as angle with the horizontal (), and slope height (H) on factor of safety (Fs) are studied in this work. Fs is examined in two scenarios: I a slope with dry conditions, and (ii) a steady-state saturated condition with water level drawdown conditions. Furthermore, a slip circle is examined. The SLOPE/W software, which is part of the Geo-Studio software suite, is used to perform these calculations. The data show that reducing the water table level and relieving the slope of hydrostatic pressure reduces the safety factor. Only at near-vertical slopes did the plane failure method give good results when compared to the circular failure method. The results also reveal that each of the three forms of slip happened, however only toe circle slips happened for >. For calculating the slope safety factor, linear and nonlinear regression equations were used.

Author(S) Details

Farzin Salmasi
Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.

John Abraham
University of St. Thomas, Minnesota, School of Engineering 2115 Summit Avenue St. Paul, Minnesota 55105, USA.

Bahram Nourani
Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.

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Study on the Impact of Outside Temperature on Remaining Lifespans of Cuffs of Vehicles’ Steering Systems | Chapter 6 | Current Approaches in Science and Technology Research Vol. 8

 The failure of a cuff as a protective element in a vehicle steering system usually initiates the process of failure. External influences, especially the settings and outside temperature in which a vehicle is utilised, are thought to affect the cuff's service life.

The impact of outside temperatures on the remaining lifespans of cuffs is investigated in this paper. For this test, cuffs were used that were exploited over long periods of time in Montenegro's southern and northern regions. For the goals of the experimental research, a simulator that performs a linear harmonic oscillatory motion was created in order to get a number of cycles to the failure moments. A refrigerating chamber was also built to simulate driving conditions at various outdoor temperatures.

The numerical analysis in the ANSYS software environment is presented in addition to the experimental investigation. Because a maximum Equivalent Von Mises stress occurs there, computer analysis has indicated that a cuff failure may be expected virtually exactly where it was empirically proven. As a result, a cuff's failure is dependent not only on the material's fatigue as a result of a large number of oscillations, but also on the impact of outside temperatures at which the vehicle/cuff was employed.

Author (s) Details

Radoje Vujadinovic
Faculty of Mechanical Engineering, University of Montenegro, Podgorica, Montenegro.

Vladimir Pajkovic
Faculty of Mechanical Engineering, University of Montenegro, Podgorica, Montenegro.

Milanko Damjanovic
Faculty of Mechanical Engineering, University of Montenegro, Podgorica, Montenegro.

Sreten Simovic
Faculty of Mechanical Engineering, University of Montenegro, Podgorica, Montenegro.

Petar Nikcevic
Faculty of Mechanical Engineering, University of Montenegro, Podgorica, Montenegro.

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A Case Report of Thyroid Aplasia Misdiagnosed as Failure to Thrive | Chapter 3 | Highlights on Medicine and Medical Research Vol. 13

 The most prevalent cause of congenital hypothyroidism is thyroid aplasia, which is a type of thyroid dysgenesis. One of the most avoidable causes of mental impairment is congenital hypothyroidism. Because of the delay in diagnosis, despite its crippling effect on intellectual development, diagnosing congenital hypothyroidism is difficult in our context. We present a 10-year-old girl who was treated for failure to thrive in the first year of her life due to acyanotic congenital heart disease, but was later diagnosed with congenital hypothyroidism after additional screening (thyroid aplasia). She's been on Levo thyroxine since then, and her linear development has been spectacular, but she's had substantial cognitively damage.

Author (S) Details

I. O. Oluwayemi
Department of Paediatrics, College of Medicine, Ekiti State University, Ado-Ekiti, Ekiti State, Nigeria.

E. O. Adeniji
Department of Paediatrics, College of Health Science, Ladoke Akintola University of Technology, Osogbo, Nigeria.

T. O. Ayeni
Department of Paediatrics, LAUTECH Teaching Hospital, Osogbo, Nigeria.

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Recent Study on Failure Diagnosis and Prognosis of Sliding Bearings | Chapter 2 | Advanced Aspects of Engineering Research Vol. 10

 Sliding bearings are commonly used machine elements whose proper operation is dependent on the availability of many technological systems, and the analysis of the prediction method for sliding bearings receives a lot of attention. High levels of vibration and noise are caused by problems with sliding bearings. The thermal analysis is a critical parameter in the diagnosis and prediction of sliding bearing failure. Vibration spectrum analysis, oil film thickness, and other related parameters are often used in addition to these. It is possible to substantially reduce measurement time while increasing the precision of diagnostic methods by using advanced technologies. A mathematically formalised mode of representation for modelling ambiguity is fuzzy logic. In this paper, a selection of damage in the operation of a sliding bearing is made, and the method for diagnosing these issues is demonstrated. Sliding bearing damage can be detected early using methods that combine multiple diagnostic parameters into one.

Author (s) Details

R. Antunovic
University of East Sarajevo, Faculty of Mechanical Engineering, Vuka Karadžica Street 30, 71123 East Sarajevo, Bosnia and Herzegovina

N. Vucetic
University of East Sarajevo, Faculty of Mechanical Engineering, Vuka Karadžica Street 30, 71123 East Sarajevo, Bosnia and Herzegovina

A. Halep
Cement Factory, Selima Efendije Merdanovica Street 146, 72240 Kakanj, Bosnia and Herzegovina

View Book :- https://stm.bookpi.org/AAER-V10/article/view/751