Skin that becomes unnaturally elevated, discoloured, or behaves in another unusual way may indicate a more serious health issue, such as skin cancer. Lesions on the skin, on the other hand, deviate from the skin's...
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Overloading has become a major concern for engineers in recent years. The mentality of logistics service providers towards increasing their profit margins and higher transportation and fuel costs in middle-income coun...
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ISBN:
(纸本)9789819938254
Overloading has become a major concern for engineers in recent years. The mentality of logistics service providers towards increasing their profit margins and higher transportation and fuel costs in middle-income countries like Bangladesh induce overloading of freight traffic. These result in an increase in the number of accidents due to braking system failure and infrastructure damage such as roads and bridges. Increased frequency of overloads may trigger shorter service life of critical components and perhaps catastrophic bridge failure. This study aims to assess the impact of overweight vehicle on the design of prestressed concrete girder bridges, which comprise the majority of highway bridges. For this purpose, an overweight vehicle has been selected investigating monthly overweight truck status report from a previous study. Bridges of four different spans (30 m, 35 m, 40 m and 45 m) have been modeled and designed in CSiBridge for strength and serviceability combination. To explore the effects of overloading, series of selected overweight vehicles were driven over those bridges. Parameters considered for studying the effect are maximum mid span moment, D/C ratio, maximum reactions at supports for Strength I combination and girder bottom tensile stress at Service III combination. It has been observed that maximum moment has been increased by 20.46% for 30 m bridge, 25.74% for 35 m bridge, 31.59% for 40 m bridge and 37.89% for 45 m bridge. D/C ratio has been increased by 19.76% for 30 m bridge, 35.33% for 35 m, 41.44% for 40 m bridge and 32.41% for 45 m bridge. Substantial changes have been noticed in girder bottom tensile stresses. Stress has been increased by 625.8% for 30 m bridge, 1995% for 35 m bridge, 884.5% for 40 m bridge and 763.8% for 45 m bridge. Maximum support reaction has been increased by 44.33% for 30 m bridge, 37.83% for 35 m bridge, 48.77% for 40 m bridge and 41.63% for 45 m bridge for interior girders and for exterior girders 32.55% for 30 m bri
This paper focuses on the secure wireless multicasting under the employment of Neyman-Pearson receiver with maximal ratio combining (MRC) diversity technique. MRC diversity technique mitigate the fading effect signifi...
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In an era where e-commerce demands are soaring, the quest for an immersive and efficient shopping experience is more relevant than ever. This paper introduces a cutting-edge virtual reality based automatic online shop...
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One-seventh of the worldwide electricity is used for refrigeration related activities. When compared to the predominantly used vapor compression refrigeration system, magnetocaloric refrigeration provides an energy-ef...
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The authors present a model for diagnosing motor faults based on machine learning, demonstrating advantages over other algorithms in terms of both improved fitness values and reduced running time. The structure of the...
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In this paper, an enhanced bandwidth antenna featuring a dual moon-shaped patch design is presented. The antenna occupies an area of 153 mm by 130 mm and operates within the frequency band of 0.69 to 1.19 GHz. The str...
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Boron is an important industrial raw material often sourced from minerals containing different compounds that cocrystallize,which makes it difficult to separate the mineral phases through conventional *** study propos...
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Boron is an important industrial raw material often sourced from minerals containing different compounds that cocrystallize,which makes it difficult to separate the mineral phases through conventional *** study proposed a new treatment called flash reduction-melting separation(FRMS)for boron-bearing iron *** this method,the concentrates were first flash-reduced at the temperature under which the particles melt,and the slag and the reduced iron phases disengaged at the particle *** reduc-tion and melting effects were achieved above 1550℃.The B_(2)O_(3) content in the separated slag was over 18wt%,and the B content in the iron was less than 0.03wt%.The proposed FRMS method was tested to investigate the effects of factors such as ore particle size and tem-perature on the reduction and melting steps with and without pre-reducing the raw *** mineral phase transformation and morphology evolution in the ore particles during FRMS were also comprehensively analyzed.
In this work, we propose and examine an ammonia-hydrogen fueled micro-combustor with a single-channel inlet and double-channel outlet (SIDO). The combustion characteristics and nitrogen oxide emission of ammonia/hydro...
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In recent times, the growing popularity of joint-free mechanical systems and structures is attributed to advancements in 3D printing technology. Unlike traditional mechanically joined systems, 3D-printed products requ...
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