Results 271 to 280 of about 71,311 (309)
Some of the next articles are maybe not open access.
A novel approach for modeling cracking furnace severity
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788), 2004Due to the strong nonlinear and dynamic behavior of the naphtha cracking furnace, the ordinary feed forward neural network was not suitable to model its severity index. Principal component analysis (PCA) method and dynamic neural network structure were therefore employed at this situation.
null Xiaofeng Zhuang, null Jinshou Yu
openaire +1 more source
Algorithm for Automatic Crack Analysis and Severity Identification
2019 Ninth International Conference on Intelligent Computing and Information Systems (ICICIS), 2019Concrete structures are increasing every day, to facilitate people's lives. With this expansion, the traditional manual maintenance method becomes unpractical, costly and time-wasting. The fast detection and maintenance of concrete surfaces defects is necessary to save people's lives, reducing maintenance cost, and increase the lifetime of concrete ...
Sara Ashraf +2 more
openaire +1 more source
The severity of plastic shrinkage cracking in concrete: a new model
Magazine of Concrete Research, 2021Plastic shrinkage cracking in concrete is mainly a physical process, in which chemical reactions between cement and water do not play a decisive role. It is commonly believed that rapid and excessive moisture loss due to evaporation is the primary cause of the phenomenon.
Faez Sayahi +4 more
openaire +1 more source
Cracking severity index in pyrolysis of petroleum fractions
Industrial & Engineering Chemistry Process Design and Development, 1982The central problem in developing a sound pyrolysis model for petroleum fractions such as naphthas and gas oils is that of characterizing feed conversion, or cracking severity. Direct measurements of feed conversion are precluded by the large number of feed components and the difficulty of quantitatively analyzing them in reactor effluents.
Winston R. Shu, Lawrence L. Ross
openaire +1 more source
Narrow Fraction Model with Secondary Cracking for Low-Severity Thermal Cracking of Heavy Oil
Energy & Fuels, 2012Thermal reaction experiments of vacuum residuum were conducted in a micro-batch reactor at 410–480 °C.
Junwei Yang +4 more
openaire +1 more source
Crack Propagation Fracture Toughness of Several Wood Species
Advances in Civil Engineering Materials, 2013Abstract In materials with process zones, such as fiber-bridging zones in wood, it is crucial to characterize fracture toughness as a function of crack growth, known as the material's R curve. Here, a new fracture testing protocol developed to measure continuous R curves was used on six different species of solid wood—Douglas fir ...
Elijah Wilson +2 more
openaire +1 more source
Predicting Severity of Cracks in Concrete using Fuzzy Logic
2018 International Conference on Recent Innovations in Electrical, Electronics & Communication Engineering (ICRIEECE), 2018Detection of cracks in concrete is highly recommended in early stages of construction to avoid potential hazards later. Need for automatic detection through image capturing and processing is rising. Till date only classifiers to detect cracks based on image processing have been designed.
Rashi Jain, R. S. Sharma
openaire +1 more source
Creep crack growth behavior of several structural alloys
Metallurgical Transactions A, 1983Creep crack growth behavior of several high temperature alloys, Inconel 600, Inconel 625, Inconel X-750, Hastelloy X, Nimonic PE-16, Incoloy 800, and Haynes 25 (HS-25) was examined at 540, 650, 760, and 870 °C. Crack growth rates were analyzed in terms of both linear elastic stress intensity factor and J*-integral parameter.
K. Sadananda, P. Shahinian
openaire +1 more source
Severely Corroded Reinforced Concrete with Cover Cracking
2013In many corroding RC structures, it is not uncommon that cover cracking, spalling and delamination have occurred. Previous research has mainly been concerned with corrosion levels leading to cover cracking along the main reinforcement, while corrosion of stirrups is often overlooked.
CORONELLI, DARIO ANGELO MARIA +2 more
openaire +1 more source
Transformation of Several Plastic Wastes into Fuels by Catalytic Cracking
Industrial & Engineering Chemistry Research, 1997The thermal and catalytic cracking of several plastic wastes (polypropylene, polystyrene, polystyrene−polybutadiene) dissolved in refinery LCO has been studied in a riser simulator, under operating conditions (catalyst, temperature, contact time, C/O ratio) that are similar to commercial FCC units.
José M. Arandes +6 more
openaire +1 more source