Assessing Key Factors Influencing Fire-Induced Spalling Of Concrete Using Explainable Artificial Intelligence (Xai),
2023
Clemson University
Assessing Key Factors Influencing Fire-Induced Spalling Of Concrete Using Explainable Artificial Intelligence (Xai), Mohammad Khaled Gazi Albashiti
All Theses
This thesis adopts eXplainable Artificial Intelligence (XAI) to identify the key factors influencing the fire-induced spalling of concrete and to extract new insights into the fire-induced spalling phenomenon. In this pursuit, an XAI model was developed, validated, and then augmented with two explainability measures, namely, Shapley Additive exPlanations (SHAP) and Local Interpretable Model-Agnostic Explanations (LIME). The proposed XAI model not only can predict the fire-induced spalling with high accuracy (i.e., >92 %) but can also articulate the reasoning behind its predictions (as in, the proposed model can specify the rationale for each prediction instance); thus, providing us with valuable insights …
Science Club,
2023
University of Nebraska - Lincoln
Science Club, Danielle Gibson, Krista Andersen
Honors Program: Expanded Learning Clubs
Honors After School program for elementary age children to engage with scientific principles. Students performed hands-on experiments to explore various STEM fields. Each weekly lesson consisted of a different concept to be learned or explored by early elementary aged students.
Feasibility Study For A Continuous Mansfield Hollow State Park Multi-Use Path,
2023
University Of Connecticut
Feasibility Study For A Continuous Mansfield Hollow State Park Multi-Use Path, Owen P. Spangler
Honors Scholar Theses
This report aims to design a pedestrian river crossing that connects the north and south ends of Mansfield Hollow State Park, utilizing both a new paved pathway and bridge construction. This report first uses GIS data to complete a feasibility study on pathway routing and cost. A preliminary route was selected based on grading and cost analysis. The requirements for constructing a multi-use pathway in the State of Connecticut were then explored, attempting to find a best-fit pathway alignment to accomplish that goal. Through a lengthy literature review, it was found that the pathway design would have to deviate from …
Component Testing And Characterization Of An Innovative Pressurized Sand Damper For The Response Modification Of Structures,
2023
Southern Methodist University
Component Testing And Characterization Of An Innovative Pressurized Sand Damper For The Response Modification Of Structures, Konstantinos Kalfas
Civil and Environmental Engineering Theses and Dissertations
This study is partly motivated by the need to develop sustainable energy dissipation devices that do not suffer from oil leakage due to failure of their end seals and from displacement limitations; and partly from the need to develop a robust damper that consists only of traditional civil engineering materials (sand and steel) in association with the use of post-tensioned steel rods with which practitioner civil engineers are familiar. Past failures of fluid dampers are both disruptive and costly, therefore not in-line with the current design paradigm of sustainable engineering, where the design and construction of structural systems shall meet …
Inter-Wythe Slip Design Criteria For Non-Composite Insulated Walls,
2023
University of Nebraska - Lincoln
Inter-Wythe Slip Design Criteria For Non-Composite Insulated Walls, Abdelrahman Awawdeh, Fray F. Pozo-Lora, Marc Maguire
Durham School of Architectural Engineering and Construction: Faculty Publications
Non-composite insulated wall connector design is governed by ICC-ES AC320. This standard works entirely in the loading domain, asking the engineer to prevent connector failure due to tension and shear loading. In this paper, the authors discuss additional criteria related to thermal loading and out-of-plane wind loading that create displacement demand in the non-composite connectors. Loads suitable for such analyses are not well defined. Loads are assumed and demonstrated herein and shown to cause significant displacement demand on connectors. Limited non-composite wythe connector testing is available, and some results are presented here. A comparison indicates that outright failure of non-composite …
Indirect Bridge Monitoring Using Crowdsourced Smartphone Data From Passing Vehicles,
2023
Southern Methodist University
Indirect Bridge Monitoring Using Crowdsourced Smartphone Data From Passing Vehicles, Jase Sitton
Civil and Environmental Engineering Theses and Dissertations
Bridges become susceptible to deterioration and damage as they age and are subjected to continually increasing demands. Bridge inspections help insure the integrity and safety for service and are conducted on a regular, but usually infrequency, basis. Traditional evaluation methods include visual inspections and permanent sensor installations. Visual inspections are both time and labor intensive and often require bridge closure or service interruption, while cost and logistics complications often prevent practical, widespread deployment of permanent sensor installations. Sensors, including smartphones, in moving vehicles may be used to monitor bridge condition over time and provide valuable insight into the dynamic behavior …
Design Of Wythe Connectors For Concentrated Out-Of-Plane Loading Of Insulated Walls,
2023
University of Nebraska - Lincoln
Design Of Wythe Connectors For Concentrated Out-Of-Plane Loading Of Insulated Walls, Ammar Al-Maabreh, Fray F. Pozo, Marc Maguire
Durham School of Architectural Engineering and Construction: Faculty Publications
Partially composite concrete insulated wall panels must be designed to handle different types of loading, including out-of-plane concentrated loads. Currently, there is a lack of information that describes and helps engineers analyze the mechanics of axial load transfer for insulated wall panels for concentrated out-of-plane loads that may occur from lifting, handling, or floor/roof reactions. Such loading generates axial and shear forces in the wythe connectors, making it important to choose the type and quantity of connectors in the design process. This paper aims to develop a better understanding of out-of-plane point load mechanics on concrete sandwich wall panels. A …
Using Thermal Remote Sensing To Quantify Impact Of Traffic On Urban Heat Islands During Covid,
2023
San Jose State University
Using Thermal Remote Sensing To Quantify Impact Of Traffic On Urban Heat Islands During Covid, My-Thu Tran, Bo Yang
Mineta Transportation Institute
A three-month lockdown in the U.S. at the beginning of the COVID-19 outbreak in 2020 greatly reduced the traffic volume in many cities, especially large metropolitan areas such as the San Francisco Bay Area. This research explores the impact of transportation on climate change by using remote sensing technology and statistical analysis during the COVID-19 lockdown. Using thermal satellite data, this research measures the intensity of the urban heat island, the main driver for climate change during the urbanization process. The research team acquired morning and afternoon MODIS data in the same periods in 2019 before the pandemic and 2020 …
Semi-Annual Progress Report #13,
2023
Inspire - University Transportation Center
Semi-Annual Progress Report #13, Missouri University Of Science And Technology
Semi-Annual Progress Reports
No abstract provided.
Probability Of Detection In Structural Health Monitoring,
2023
Missouri University of Science and Technology
Probability Of Detection In Structural Health Monitoring, Genda Chen
INSPIRE Archived Webinars
The fundamental concept of the probability of detection in structural health monitoring is introduced. The traditional Probability of Detection (POD) method as described in the Department of Defense Handbook MIL-HDBK-1823A for nondestructive evaluation systems does not take the time dependency of data collection into account. When applied to in-situ sensors for the measurement of flaw sizes, such as fatigue-induced crack length and corrosion-induced mass loss, the validity and reliability of the traditional method is unknown. In this 50-minute lecture, the POD for in-situ sensors and their associated reliability assessment for detectable flaw sizes are evaluated using a Flaw-Size-at-Detection (FSaD) method …
Environmental Assessments On A Local Project,
2023
Lochmueller
Environmental Assessments On A Local Project, Robert Winebrinner, Trevor Wieseke, Summer R. Elmore, Alison Krupski, Mike Maurovich
Purdue Road School
This presentation will go through the environmental process of a recent $125M local project within Noblesville. What are the major differences between the National Environmental Policy Act (NEPA) and State Environmental Policy Act (SEPA) process as it relates to an environmental assessment (EA)? What is required, what is not required, and what is optional? How long does the process take? Join us as we walk through this exciting process and experience.
Additive Manufacturing Of Engineered Cementitious Composites With Ultra-High Tensile Ductility,
2023
University of New Mexico
Additive Manufacturing Of Engineered Cementitious Composites With Ultra-High Tensile Ductility, Amir Bakhshi
Civil Engineering ETDs
One of the critical factors in the development of additive manufacturing in the construction industry is designing suitable materials for 3D printing applications. 3D concrete printing (3DCP) has gained significant attention due to the abundance and availability of concrete. However, concrete is a brittle material and, without proper reinforcement, cannot meet the requirements for structural purposes. Engineered Cementitious Composites (ECC), known for high ductility, and strain-hardening with low fiber contents, can potentially eliminate the need for steel reinforcement in 3D printing without any need for manual placement of reinforcement. A set of systematic tests on ECC mix designs' fresh and …
Timber Box Header Using Bamcore Side Panels: A Senior Project Study,
2023
California Polytechnic State University, San Luis Obispo
Timber Box Header Using Bamcore Side Panels: A Senior Project Study, Jonathan Frank Herrera
Architectural Engineering
The purpose of this study was to begin development of a composite box header that was able to span long openings with minimal deflection. The headers in study were comprised of BamCore side panels, nailed top and bottom each face to a 2x6 top plate, and a header of multiple specified sizes. The 2x6 top plate and headers ranging from a 6x6 to a 6x12 were made up of Douglas Fir-Larch, No.1. Analysis was performed assuming 10d common nailing at top and bottom of the BamCore side panels. Initial analysis of a composite box header was performed and analyzed as …
Gömböc The Great,
2023
University of Saskatchewan
Gömböc The Great, Indigo M. Strickert, Lori E. Bradford
The Transdisciplinary STEAM+ Journal
A sonnet written about the mathematics behind the self-righting shape of some tortoise shells.
Virtual Industry Visits,
2023
Technological University Dublin, Ireland
Virtual Industry Visits, Cian Farrell
Articles
Cian Farrell of Technological University Dublin describes a virtual educational approach trialled during the Covid-19 pandemic to engage students during a period of remote learning and educate them on industry processes and practices. Virtual industry visits saw students receive online briefings and tours of manufacturing plants and construction sites from industry representatives to complement their taught modules. The virtual visits have continued since Covid restrictions eased as part of a hybrid approach to learning that increases student exposure to real-life projects. The initiative won the Institution of Structural Engineers Excellence in Structural Engineering Education Award in 2022.
Survey Data: Optimising Retrofitted Insulation For Irish Residential Building Walls,
2023
Technological University Dublin
Survey Data: Optimising Retrofitted Insulation For Irish Residential Building Walls, Rakshit D. Muddu, Aimee Byrne, Anthony Robinson Dr.
Datasets
A survey was conducted to determine the preferred set point temperature and heating pattern among Irish households. The survey was sent to 237 people living across Ireland, out of which 32 respondents skipped the survey and 9 surveys were found to be incomplete. Amongst the counties in Ireland 71.1% respondents were from Dublin, 6.34% from Kildare, 5% from Meath, 5% from Wicklow and in all the remaining counties response rate was below 2%. Part 1: This section of the survey recorded information regarding characteristics of the building such as house type, wall type, insulation type, period the house was built. …
Inspire Newsletter Spring 2023,
2023
Missouri University of Science and Technology
Inspire Newsletter Spring 2023, Missouri University Of Science And Technology. Inspire - University Transportation Center
INSPIRE Newsletters
No abstract provided.
Development And Validation Of Improved Live Load Distribution Factors For Moment In Press-Brake-Formed Steel Tub Girder Bridges,
2023
West Virginia University
Development And Validation Of Improved Live Load Distribution Factors For Moment In Press-Brake-Formed Steel Tub Girder Bridges, Brook Teklu Woldegabriel
Graduate Theses, Dissertations, and Problem Reports (ETD)
Press-brake-formed tub girders (PBFTGs) offer innovative solutions for short-span steel bridge applications, possessing efficiency, versatility, and sustainability. These girders are galvanized shallow trapezoidal boxes fabricated from cold-bent structural steel plates. Depending on the design requirements, a concrete deck or other deck options, such as a steel sandwich plate system, can be placed on the girders. The Short Span Steel Bridge Alliance (SSSBA) extensively researched the steel PBFTG bridge system. As a testament to its potential, the AASHTO Innovation Initiative (AII) recognized it as a 2021 Focus Technology. AII has shown commitment to promoting the adoption of PBFTG among its member …
Robotic Inspection And Data Analytics To Localize And Visualize The Structural Defects Of Civil Infrastructure,
2023
CUNY, City College
Robotic Inspection And Data Analytics To Localize And Visualize The Structural Defects Of Civil Infrastructure, Jinglun Feng
Dissertations and Theses
Ground Penetrating Radar (GPR) serves as a significant nondestructive evaluation (NDE) technique to inspect and survey underground objects (e.g., rebars, utility pipes) in complex urban environments. In addition to GPR, visual-based surface defect detection plays a crucial role in assessing and maintaining civil infrastructure. To facilitate deployment on a robotic platform and enhance inspection capabilities, the integration of GPR and visual-based sensors, such as RGB-D cameras, is crucial to obtain accurate subsurface and surface information. This thesis presents a novel robotic-based inspection system for the efficient collection of NDE data and accurate 3D reconstruction of both subsurface and surface infrastructure …
Elevation-Distributed Multistage Reverse Osmosis Desalination With Seawater Pumped Storage,
2023
Old Dominion University
Elevation-Distributed Multistage Reverse Osmosis Desalination With Seawater Pumped Storage, Hani E. Elsayed-Ali
Electrical & Computer Engineering Faculty Publications
A seawater reverse osmosis (RO) plant layout based on multistage RO with stages located at different elevations above sea level is described. The plant uses the weight of a seawater column from pumped storage as head pressure for RO (gravity-driven multistage RO) or to supplement high-pressure pumps used in RO (gravity-assisted multistage RO). The use of gravitational force reduces the specific energy for RO compared to using high-pressure pumps. By locating the RO stages at different elevations based on demand sites, the total specific energy consumption for RO and permeate transport to different elevations above sea level is reduced from …
