Engineering Commons^™

Strength Of Reinforced Concrete Elements Strengthened With Carbon Fiber External Reinforcement, B. Sagatov, N. Rakhmanov

Problems of Architecture and Construction

The article presents the results of experimental studies of the mechanism of force transmission through cracks in reinforced concrete elements strengthened with external reinforcement from carbon-fiber materials. New results to assess the ultimate shear resistance and stiffness of sections of reinforced concrete elements with cracks are described.

Module Preganglionic Deformations And Measure Aging Creep Of Heterogeneous Materials, Kh. Turayev

Problems of Architecture and Construction

On the basis of numerous studies it can be asserted that the modulus of elastic deformation of aging heterogeneous materials rises with increasing t age, approaching the limiting value of the modules of deformation for inhomogeneous material of very old age. The analysis of experimental studies based on the study of aging materials in the most important cases of their loading shows that the creep measure under conditions of natural in homogeneity for any t is a continuous bounded nonnegative function of t for t>t.

Numerical Study Of Nonlinear Oscillations Of A Viscoelastic Plate With Concentrated Masses, R. Abdikarimov, D. Khojayev

Problems of Architecture and Construction

Nonlinear oscillations of a viscoelastic rectangular plate with concentrated masses are investigated under different boundary conditions. The solution of the integro-differential equation is obtained using the Bubnov-Galerkin method in combination with the numerical method. The influence of the viscoelastic properties of the material and concentrated masses on the process of oscillations of a plate is shown.

Energy Saving Issues In The Design Of Modern Social Buildings, U. Ablayeva, N. Normatova

Problems of Architecture and Construction

Improving the energy efficiency of buildings in recent decades has become one of the main directions of development of the construction industry. It seems appropriate to focus on improving the heat-shielding properties of external walls and windows, as well as a reasonable limitation of infiltration of outside air. Energy saving is a complex task. The concept of an energy efficient home should include not only insulation of structures, but also specific engineering solutions for the ventilation and heating systems.

Determination Of Imposition In Profiled Steroids Working On Non-Cervical Compressio, T. Kasimov

Problems of Architecture and Construction

This article provides the solutions to general and local priorities of profiled rods that work for off-center compression. Rods with an open curved profile are effective in general and local priority compared to hot-rolled bars. In the article the author indicated that when cross-sectioned sheets are bent in various shapes, shear stresses are created at the transverse sections when the nonlinear longitudinal force is applied.

Thermo-Physical Calculation Og Buildings On The Basis Of Energy Saving Requirements And The Second Level Of Thermal Protection, B. Aytmuratov

Problems of Architecture and Construction

One of the ways to increase the energy efficiency of buildings is to increase the resistance of the outer constructions to heat transfer. Therefore, in this article, the second level of thermal protection for the energy efficiency of buildings was examined according to requirments of NRC 2.01.04-97 * and analyzed for Nukus city.

Water Flow To The Earth Ground Soil Of Automobile Roads From Atmospheric Sediments, A. Kayumov, O. Zafarov, D. Kayumov

Problems of Architecture and Construction

To predict the density, moisture and heaving of soils that they will have during the operation of roads, it is necessary to determine the flow of water into the soil from precipitation falling on the surface of the carriageway and roadsides in the autumn period of moisture accumulation grounds. Therefore, this article provides a method for determining the flow of water into the soil of the road bed from precipitation.

Development Of Software On Water Use, A. Kenjabayev, A. Sultanov

Problems of Architecture and Construction

The article presents a new theoretical basis for the development of software for optimal decision-making on water use. The advantages of using software for effective water use are described, and a viable option for using the model for water use is depicted. It also demonstrates how the software can be used in files in this area.

Usage Of Strain Gauges In Construction, U. Sirojiddinov

Problems of Architecture and Construction

This article discusses the use of strain gauges in determining the magnitude of the voltage arising in building structures, as well as their use in the dosing and weighing processes of components of reinforced concrete products. The principles and methods of operation of certain types of strain gauges are described.

Technology To Improve The Durability Of Concrete In The Dry Hot Climate Of Uzbekistan, R. Khamrakulov, Kh. Karakulov, A. Jabbarov

Problems of Architecture and Construction

The article is devoted to the technology of concrete production in the conditions of dry hot climate of Uzbekistan, the methods and tools of construction technology are used to study this problem. The article analyzes the characteristic features of construction technology, taking into account the influence of various local resources. According to the result of the study, relevant recommendations and proposals were prepared for the decision maker (DM).

Simmetric Vibrations Of Two-Layer Elastic Plates, Z. Khudayberdiyev, Sh. Isroilov, Kh. Akhatov

Problems of Architecture and Construction

The article depicts the problem of generating vibration equations of the two-layer elastic plate with the equilibrium equations of the three-layer elastic plate. Due to the layout of the case, a system of two-layer elastic plate vibration equations has been obtained from the three-layer elastic plate vibration equations system. Then, the two-layer plate vibration equation system was removed and the graphs of the migration dashed layers were obtained and the corresponding conclusions were drawn.

Design Of The Rigels Of Frame Buildings Taking Into Account The Step-By-Step Loading, U. Khamrakulov, V. Usmanov

Problems of Architecture and Construction

The article presents the efficiency of accounting for the two-stage operation of the bolt of frame buildings of prefabricated monolithic reinforced concrete. Examples of calculation are carried out that shown all the effectiveness of accounting for the two-stage operation of structures.

Module Preganglionic Deformations And Measure Aging Creep Of Heterogeneous Materials, Kh. Turayev

Problems of Architecture and Construction

On the basis of numerous studies it can be asserted that the modulus of elastic deformation of aging heterogeneous materials rises with increasing t age, approaching the limiting value of the modules of deformation for inhomogeneous material of very old age. The analysis of experimental studies based on the study of aging materials in the most important cases of their loading shows that the creep measure under conditions of natural in homogeneity for any t is a continuous bounded nonnegative function of t for t>t.

Ligand Selectivity In The Recognition Of Protoberberine Alkaloids By Hybrid-2 Human Telomeric G-Quadruplex: Binding Free Energy Calculation, Fluorescence Binding, And Nmr Experiments, Nanjie Deng, Junchao Xia, Lauren Wickstrom, Clement Lin, Kaibo Wang, Peng He, Yunting Yin, Danzhou Yang

Publications and Research

The human telomeric G-quadruplex (G4) is an attractive target for developing anticancer drugs. Natural products protoberberine alkaloids are known to bind human telomeric G4 and inhibit telomerase. Among several structurally similar protoberberine alkaloids, epiberberine (EPI) shows the greatest specificity in recognizing the human telomeric G4 over duplex DNA and other G4s. Recently, NMR study revealed that EPI recognizes specifically the hybrid-2 form human telomeric G4 by inducing large rearrangements in the 50-flanking segment and loop regions to form a highly extensive four-layered binding pocket. Using the NMR structure of the EPI-human telomeric G4 complex, here we perform molecular dynamics free …

Double Wall Cooling Of A Full Coverage Effusion Plate With Main Flow Pressure Gradient, Including Internal Impingement Array Cooling, Sneha R. Vanga, David Ritchie, Austin Click, Zhong Ren, Phil Ligrani, Federico Liberatore, Rajeshriben Patel, Ram Srinivasan, Yin-Hsiang Ho

PRC-Affiliated Research

The present study provides new effusion cooling data for both the surfaces of the fullcoverage effusion cooling plate. For the effusion-cooled surface, presented are spatially resolved distributions of surface adiabatic film cooling effectiveness and surface heat transfer coefficients (measured using transient techniques and infrared thermography). For the impingement-cooled surface, presented are spatially resolved distributions of surface Nusselt numbers (measured using steady-state liquid crystal thermography). To produce this cool-side augmentation, impingement jet arrays at different jet Reynolds numbers, from 2720 to 11,100, are employed. Experimental data are given for a sparse effusion hole array, with spanwise and streamwise impingement hole spacing …

Double Wall Cooling Of A Full Coverage Effusion Plate With Main Flow Pressure Gradient, Including Internal Impingement Array Cooling, Sneha R. Vanga, David Ritchie, Austin Click, Zhong Ren, Phil Ligrani, Federico Liberatore, Rajeshriben Patel, Ram Srinivasan, Yin-Hsiang Ho

PRC-Affiliated Research

The present study provides new effusion cooling data for both the surfaces of the fullcoverage effusion cooling plate. For the effusion-cooled surface, presented are spatially resolved distributions of surface adiabatic film cooling effectiveness and surface heat transfer coefficients (measured using transient techniques and infrared thermography). For the impingement-cooled surface, presented are spatially resolved distributions of surface Nusselt numbers (measured using steady-state liquid crystal thermography). To produce this cool-side augmentation, impingement jet arrays at different jet Reynolds numbers, from 2720 to 11,100, are employed. Experimental data are given for a sparse effusion hole array, with spanwise and streamwise impingement hole spacing …

Double Wall Cooling Of A Full Coverage Effusion Plate With Main Flow Pressure Gradient, Including Internal Impingement Array Cooling, Sneha R. Vanga, David Ritchie, Austin Click, Zhong Ren, Phil Ligrani, Federico Liberatore, Rajeshriben Patel, Ram Srinivasan, Yin-Hsiang Ho

PRC-Affiliated Research

The present study provides new effusion cooling data for both the surfaces of the fullcoverage effusion cooling plate. For the effusion-cooled surface, presented are spatially resolved distributions of surface adiabatic film cooling effectiveness and surface heat transfer coefficients (measured using transient techniques and infrared thermography). For the impingement-cooled surface, presented are spatially resolved distributions of surface Nusselt numbers (measured using steady-state liquid crystal thermography). To produce this cool-side augmentation, impingement jet arrays at different jet Reynolds numbers, from 2720 to 11,100, are employed. Experimental data are given for a sparse effusion hole array, with spanwise and streamwise impingement hole spacing …

Mass Accommodation At A High-Velocity Water Liquid-Vapor Interface, J. Nie, A. Chandra, Z. Liang, P. Keblinski

Mechanical and Aerospace Engineering Faculty Research & Creative Works

We Use Molecular Dynamics to Determine the Mass Accommodation Coefficient (MAC) of Water Vapor Molecules Colliding with a Rapidly Moving Liquid-Vapor Interface. This Interface Mimics Those Present in Collapsing Vapor Bubbles that Are Characterized by Large Interfacial Velocities. We Find that at Room Temperature, the MAC is Generally Close to Unity, and Even with Interfaces Moving at 10 Km/s Velocity, It Has a Large Value of 0.79. using a Simplified Atomistic Fluid Model, We Explore the Consequences of Vapor Molecule Interfacial Collision Rules on Pressure, Temperature, and Density of a Vapor Subjected to an Incoming High-Velocity Liquid-Vapor Interface.

Discrete-Position Solar Tracking For Photovoltaic System, Shengnan Hong, Zheng Fu, Richard E. Stamper

Rose-Hulman Undergraduate Research Publications

The purpose of this research is to design a new tracking system for solar panels using the idea of discrete-position tracking. Compared with the traditional fixed solar panel, discrete-position trackers have a higher gain of harvesting solar radiation with smaller misalignment angles. Also, since we are trying to design the a passive tracker with solely mechanical structure to do the kinetics, a discrete-position tracker can decrease the cost of the maintenance to a huge extent in contrast to both one-axis and two-axis continuous tracking systems. The majority of the cost of maintaining a continuous tracker is the motor or hydraulic …

Civil Engineering Student Receives All-West Team Hockey Award | College Of Engineering, Utah State University

College of Engineering News

Civil engineering undergrad and hockey team captain Josh Kerkvliet received the All-West Team award.

Development Of A Mash Tl-4 Steel, Side-Mounted, Beam-And-Post, Bridge Rail, Oscar Pena

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

A new steel, side-mounted, beam-and-post, bridge rail was designed, crash-tested, and evaluated according to safety performance guidelines included in the American Association of State Highway and Transportation Officials Manual for Assessing Safety Hardware (MASH) for Test Level 4 (TL-4). The new bridge rail system was designed to be compatible to multiple concrete bridge decks utilized by the States of Illinois and Ohio. Bridge rail configurations were designed and optimized based on weight per foot, constructability, and safety. Post-to-rail and rail-to-rail connections were designed for the new bridge rail. Several concepts for these connections were configured, and after discussion with representatives …

Design, Fabrication And Validation Of A Hand-Wore Device For Assisted Object Grasping For The Visually Impaired, Xiaoping Liu

Theses and Dissertations

Grasping a target object is very challenging to a visually impaired individual due to vision loss. An object grasping task can be divided into three sub-tasks: detecting the target ob-ject, maintaining hand-object alignment while approaching the object, and taking a hold of it. Vision loss makes the first two sub-tasks impossible. To help a visually impaired per-son re-gain the capability in performing the two sub-tasks, a hand-worn assistive device is designed. The device consists of control and visual guidance. Control involves an exo-skeleton mechanism worn by user’s right hand. The mechanism, driven by two micro-motors, drags the thumb to move …

Increasing Operator Skills In A Manufacturing Environment, Bobbie Lee Hubbard

Instructional Design Capstones Collection

A plastic-injection molding facility is converting many machines into more automated systems. These complex systems require higher-level skill sets than current operators have been trained in. There is a need to increase the level of competency in most, if not all, of the operators at the Facility, and create a system of levels that engages employees and encourages learning new skills to increase their position and pay.

There is a need for a clear path of compensation based on skills and actions. The Facility is currently not optimizing or maximizing their current portfolio of machines and resources, leaving an unknown …

Less-Than-Lethal Self Defense Device With An Acoustic Element, Anthony Taibi

KSU Journey Honors College Capstones and Theses

This creative capstone project involves the conception, design, and creation of a less-than-lethal self defense device with an integrated sound board to control the acoustic element. Theoretically, this device is capable of deterring potential threats without causing any serious harm or any long-term damage. When starting this project, I was very focused on sonic warfare, and how to harness the power of ultrasonic and infrasonic sound waves to subdue to target; however, I concluded that using resonant frequencies to deter a human being is too dangerous, expensive, and can have negative effects for the user of the device if used …

Development Of Post-To-Deck Connections For Use In A Mash Tl-4 Steel-Tube Bridge Rail, Pascual Mauricio

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

A new post-to-deck connection was designed for mounting an upcoming Manual for Assessing Safety Hardware (MASH) Test Level 4 steel-tube bridge rail to the side of the bridge deck to limit impact load transferred to the deck and to minimize the propensity for deck damage during impacts. With preference for the bridge rail system to be compatible for use on all deck configurations, the Illinois and Ohio Departments of Transportation desired the new system to attach to bridge decks comprised of concrete slabs or precasted prestressed, concrete box-beam girders.

A new post-to-deck connection for a new MASH 2016 TL-4 steel-tube …

An Agent-Based Evacuation Model To Improve Safety In The Cascadia Subduction Zone, Haizhong Wang

PSU Transportation Seminars

This seminar will present ongoing research into how integrated social, natural, and engineered systems can improve life safety under threat of multi-hazards. The targeted scenario is a magnitude 9.0 earthquake and tsunami from the Cascadia Subduction Zone, threatening communities along 1,000 miles of the US Pacific Northwest coastline.

Since the mid-1980’s scientific evidence has underscored the possibility of such an extreme event, and it has taken at least another decade or more before public attitudes and policy have begun to adapt to this new hazard. Life safety is a pressing issue for the near-field CSZ tsunami hazard for several reasons. …

Development Of A Scada System For Alternative Energy, Molom-Ochir Mijid

Morehead State Theses and Dissertations

A thesis presented to the faculty of the College of Business and Technology at Morehead State University in partial fulfillment of the requirement for the Degree Master of Science by Molom-Ochir Mijid on April 18, 2019.

The Santa Clara, 2019-04-18, Santa Clara University

The Santa Clara

No abstract provided.

Control Failures And How To Deal With It, Nihad E. Daidzic

Aviation Department Publications

FAA Safety Seminar (GL1591497) held at Minnesota State University, Mankato Wiecking Center Auditorium at 18:00 CST on Thursday, April 18, 2019.

Proceedings, Msvscc 2019, Old Dominion University, Department Of Modeling, Simulation & Visualization Engineering, Old Dominion University, Virginia Modeling, Analysis And Simulation Center

Modeling, Simulation and Visualization Student Capstone Conference

Old Dominion University Department of Modeling, Simulation & Visualization Engineering (MSVE) and the Virginia Modeling, Analysis and Simulation Center (VMASC) held the 13th annual Modeling, Simulation & Visualization (MSV) Student Capstone Conference on April 18, 2019.

The Conference featured student research and student projects that are central to MSV. Also participating in the conference were faculty members who volunteered their time to impart direct support to their students’ research, facilitated the various conference tracks, served as judges for each of the tracks, and provided overall assistance to the conference.

Appreciating the purpose of the conference and working in a cohesive, …