The Experts below are selected from a list of 1449 Experts worldwide ranked by ideXlab platform
Sumin Kim - One of the best experts on this subject based on the ideXlab platform.
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Framework for developing a building Material Property Database using web crawling to improve the applicability of energy simulation tools
Renewable and Sustainable Energy Reviews, 2020Co-Authors: Sungwoong Yang, Ji Hun Park, Hyun Mi Cho, Sumin KimAbstract:Abstract As the need to evaluate the energy performance of buildings has increased, the use of energy analysis tools has become more widespread and their results are now a key factor in building energy assessments. The current emphasis on the interpretation of building energy performance means that the enhancement of energy analysis tools and their ease of use is worthy of study. Based on analyses of building energy and the physical properties of Materials, Material properties essential to the analysis of building energy performance were selected. These properties were automatically extracted and stored using an algorithm to collect information from the internet. Based on the designed algorithms, we conducted a questionnaire-based survey and qualitative analysis to measure their convenience. From the analysis, the satisfaction level was found to exceed an average of 80%, resulting in a high level of satisfaction for practitioners using the energy analysis tool. It was also shown that the perceived convenience could be improved by reducing the duration of the search by at least 60% and by applying physical Property information to the energy analysis application.
Waheed Uddin - One of the best experts on this subject based on the ideXlab platform.
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Pavement Materials Property Databases for Pavement Management Applications
ASTM special technical publications, 1995Co-Authors: Waheed UddinAbstract:Pavement layer structure and layer Material Property data play a key role in the development of pavement performance models, pavement design and analysis procedures, diagnostic evaluation of premature pavement deterioration, and selection of cost-effective maintenance/rehabilitation alternatives. This paper describes system design considerations for the end user interface and analysis requirements related to pavement Material Property Database management. Case studies of Material Database development and implementation include the long-term pavement performance (LTPP) studies of the Strategic Highway Research Program, network-level pavement management applications on the state level, and a recent United Nations highway maintenance management project. Reference is made to the steps taken to ensure quality assurance, Database integrity, and Database security. Relational Database tools provide an excellent facility for system development that should consider a number of key identifiers. The most important Property data are the historical Material data of all layers at the time of construction. For pavement management applications, the scope and data categories are limited and dictated by the end users and economic considerations.
Rolf Sandström - One of the best experts on this subject based on the ideXlab platform.
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Material Property Database for heat treatment simulation of tool Materials
Steel Research, 1997Co-Authors: Anders Thuvander, Roland Blom, Lai-zhe Jin, Rolf SandströmAbstract:A Materials data base has been set up with mechanical, thermophysical and transformation properties of tool and creep resistant steels. In particular powder metallurgical Materials have been covered. The intended use of the data is for numerical simulation of heat treatment with focus on computation of residual stresses and distortion in compound Materials (macro composites). The main body of the data was generated in new experiments. In this paper data for the powder metallurgical high speed steel ASP 2060 will be presented. The Material properties determined include thermophysical data such as thermal conductivity and specific heat, mechanical data such as yield strength and work hardening rate, and thermal expansion data. Most data were determined at different temperatures and after heat treatments to different microstructures. Additional data added to the Database include literature data for elastic properties and transformation induced plasticity. Quenching of a compound ring consisting of an inner high speed steel and an outer tool steel was simulated numerically using two codes, DistSIMR and Trast7. With the help of a Database interface input data adjusted to the formats of the two codes were generated. The results of the simulations showed good agreement between the two models both for the computed residual stresses and distortions, which confirms the reliability of the results.
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Materials Database with microstructural information
Computerization and Networking of Materials Databases: Fifth Volume, 1Co-Authors: Rolf Sandström, Jacek KomendaAbstract:In Material science and technology, computerized systems have been created with information on many types of Materials and properties. Many properties, such as mechanical properties, are strongly related to the chemical composition, heat treatment history, and microstructure. Unfortunately, microstructural parameters are represented to a very limited extent in existing Databases and then restricted only to a few parameters such as the phase fraction or average grain size. For detailed analysis of Property data, this is a serious drawback. Without detailed information about the microstructure, a more complete understanding of properties can never be developed. The aim of the present work is to introduce a representation of microstructures both in qualitative and quantitative form suitable for a Material Property Database. A system with microstructural description and microstructural images of various engineering Materials and their treatment data has been developed. Materials in the Database are welded simulated stainless steels, sintered high-strength steels, ferritic-pearlitic steels, aluminum-alloy-based composite, induction-hardened microalloyed steel, and deformation-dilatometry-tested microalloyed steel. The Database covers Materials specification, metallographic characteristics, and microstructural images. Later, Property data will be added. Both qualitative morphology descriptions of microstructure and the definitions of quantitative parameters are included. Modem automatic image analysis of original structures as well as of Database-collected images was used to characterize microstructures. Contents, sizes, and shapes of grains, particles, inclusions, voids, packages, bands, agglomerates, and phases were measured. Examples of Database applications are given.
Sungwoong Yang - One of the best experts on this subject based on the ideXlab platform.
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Framework for developing a building Material Property Database using web crawling to improve the applicability of energy simulation tools
Renewable and Sustainable Energy Reviews, 2020Co-Authors: Sungwoong Yang, Ji Hun Park, Hyun Mi Cho, Sumin KimAbstract:Abstract As the need to evaluate the energy performance of buildings has increased, the use of energy analysis tools has become more widespread and their results are now a key factor in building energy assessments. The current emphasis on the interpretation of building energy performance means that the enhancement of energy analysis tools and their ease of use is worthy of study. Based on analyses of building energy and the physical properties of Materials, Material properties essential to the analysis of building energy performance were selected. These properties were automatically extracted and stored using an algorithm to collect information from the internet. Based on the designed algorithms, we conducted a questionnaire-based survey and qualitative analysis to measure their convenience. From the analysis, the satisfaction level was found to exceed an average of 80%, resulting in a high level of satisfaction for practitioners using the energy analysis tool. It was also shown that the perceived convenience could be improved by reducing the duration of the search by at least 60% and by applying physical Property information to the energy analysis application.
Daniel J. Rasky - One of the best experts on this subject based on the ideXlab platform.
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"TPSX: Thermal Protection System Expert and Material Property Database"
1997Co-Authors: Thomas H. Squire, Frank S. Milos, Daniel J. RaskyAbstract:The Thermal Protection Branch at NASA Ames Research Center has developed a computer program for storing, organizing, and accessing information about thermal protection Materials. The program, called Thermal Protection Systems Expert and Material Property Database, or TPSX, is available for the Microsoft Windows operating system. An "on-line" version is also accessible on the World Wide Web. TPSX is designed to be a high-quality source for TPS Material properties presented in a convenient, easily accessible form for use by engineers and researchers in the field of high-speed vehicle design. Data can be displayed and printed in several formats. An information window displays a brief description of the Material with properties at standard pressure and temperature. A spread sheet window displays complete, detailed Property information. Properties which are a function of temperature and/or pressure can be displayed as graphs. In any display the data can be converted from English to SI units with the click of a button. Two Material Databases included with TPSX are: 1) Materials used and/or developed by the Thermal Protection Branch at NASA Ames Research Center, and 2) a Database compiled by NASA Johnson Space Center 9JSC). The Ames Database contains over 60 advanced TPS Materials including flexible blankets, rigid ceramic tiles, and ultra-high temperature ceramics. The JSC Database contains over 130 insulative and structural Materials. The Ames Database is periodically updated and expanded as required to include newly developed Materials and Material Property refinements.