This document discusses corrosion of ship hulls and methods to prevent corrosion through protective coatings. It provides background on corrosion processes and types, including uniform corrosion and localized corrosion like pitting and crevice corrosion. Different zones of a ship are discussed in relation to corrosion risk and appropriate paint types. Various international standards for marine paints are also outlined. The conclusion emphasizes the importance of using a primer coat and high-quality filler and paint, as well as the potential for sampling inspection plans to improve coating quality and monitoring on ship hulls.
Corrosion represents one of the most serious noticed in the industrial world especially in petrochemical, petroleum, power plants, etc.
Billions of Dollars are lost yearly due to the affect of corrosion in the world.
General Corrosion
Galvanic Corrosion
Concentration-Cell Corrosion
Intergranular Corrosion
Stress Corrosion Cracking
Pitting
IRJET- Corrosion Analysis by Acid Concentration in Oil and Gas PipelinesIRJET Journal
This document discusses corrosion in oil and gas pipelines. It identifies some key causes of corrosion as acid concentration, temperature, and presence of water and chemicals like CO2 and H2S. Internal corrosion is a major problem and can occur due to water, sediments, CO2, and H2S accumulating on the inner pipe surface. Corrosion causes damage through metal loss, weakening of pipe integrity, and environmental damage from oil spills. Proper material selection and corrosion protection methods are needed to control corrosion in pipelines and reduce economic and safety impacts.
This document discusses the effects of hydrogen on tantalum and niobium materials. Small amounts of hydrogen can be absorbed by these metals, but higher levels of hydrogen absorption can lead to embrittlement and loss of ductility. The presence of hydrogen is one of the main failure mechanisms for tantalum and niobium in corrosive environments. Several methods are discussed for preventing and detecting hydrogen embrittlement in tantalum and niobium, including controlling temperatures and concentrations, using isolation kits, vacuum degassing, visual inspection of fractures, and resistivity testing. Laboratory corrosion tests were able to predict failure times of tantalum and niobium alloys in sulfuric acid environments.
This is a presentation on hydrogen induced cracking ,sulfide stress cracking and test procedure for HIC resistant steel
DENZIL D’SOUZA
denzil22@gmail.com
CMEME2015 Conference: "Understanding hydrogen behaviour in steels" Daniel Gaude-Fugarolas
This document discusses understanding hydrogen behavior in steels, including diffusion, trapping, embrittlement risk and prevention. It covers several topics:
1. Studying hydrogen embrittlement and diffusion modeling.
2. Applications including analysis of casting processes, development of a new hydrogen extraction method during casting, analysis of baking treatments, and prediction of hydrogen damage.
3. Ongoing work on hydrogen desorption and permeation.
The document discusses a workshop focused on developing corrosion resistant alloys for naval aviation applications. It provides background on the harsh corrosive environment aircraft operate in for the Navy and Marine Corps. The workshop brought together experts to identify goals, objectives, challenges and approaches for three alloy systems: aluminum, magnesium, and steel. For each alloy system, the group validated objectives, identified technical challenges, and prioritized approaches to overcome the challenges. Critical research areas were established that could help achieve the objectives and advance the development of corrosion resistant alloys for naval aviation.
Inhibition of Sulphuric Acid Corrosion of Mild Steel by Surfactant and Its Ad...IOSR Journals
Abstract: The corrosion inhibition effect of surfactant, N,N-Dimethyl-N-(2-Phenoxyethyl)dodecan-1- aminiumbromide(DPDAB) on mild steel corrosion in 0.5M Sulphuric acid was investigated by weight loss, potentiodynamic polarization and Electrochemical impedance spectroscopic techniques. DPDAB is an excellent inhibitor and its inhibition efficiency increases with increase in concentration and maximum inhibition efficiency was observed above the critical micelle concentration (CMC). The polarization curves reveal that DPDAB acts as mixed type inhibitor with predominantly of anodic type. The corrosion inhibition efficiency of DPDAB increases with increase in concentration and decreases with increase in temperature from 298K to 308K and then increases and shows maxima at 318K and then decreases at 328K.. The adsorption of the inhibitor on the mild steel in 0.5M H2SO4 was found to obey Langmuir’s adsorption isotherm. Scanning electronic microscopy (SEM) confirmed the existence of an adsorbed protective film on the metal surface. The kinetic and thermodynamic parameters were calculated and discussed.
Corrosion represents one of the most serious noticed in the industrial world especially in petrochemical, petroleum, power plants, etc.
Billions of Dollars are lost yearly due to the affect of corrosion in the world.
General Corrosion
Galvanic Corrosion
Concentration-Cell Corrosion
Intergranular Corrosion
Stress Corrosion Cracking
Pitting
IRJET- Corrosion Analysis by Acid Concentration in Oil and Gas PipelinesIRJET Journal
This document discusses corrosion in oil and gas pipelines. It identifies some key causes of corrosion as acid concentration, temperature, and presence of water and chemicals like CO2 and H2S. Internal corrosion is a major problem and can occur due to water, sediments, CO2, and H2S accumulating on the inner pipe surface. Corrosion causes damage through metal loss, weakening of pipe integrity, and environmental damage from oil spills. Proper material selection and corrosion protection methods are needed to control corrosion in pipelines and reduce economic and safety impacts.
This document discusses the effects of hydrogen on tantalum and niobium materials. Small amounts of hydrogen can be absorbed by these metals, but higher levels of hydrogen absorption can lead to embrittlement and loss of ductility. The presence of hydrogen is one of the main failure mechanisms for tantalum and niobium in corrosive environments. Several methods are discussed for preventing and detecting hydrogen embrittlement in tantalum and niobium, including controlling temperatures and concentrations, using isolation kits, vacuum degassing, visual inspection of fractures, and resistivity testing. Laboratory corrosion tests were able to predict failure times of tantalum and niobium alloys in sulfuric acid environments.
This is a presentation on hydrogen induced cracking ,sulfide stress cracking and test procedure for HIC resistant steel
DENZIL D’SOUZA
denzil22@gmail.com
CMEME2015 Conference: "Understanding hydrogen behaviour in steels" Daniel Gaude-Fugarolas
This document discusses understanding hydrogen behavior in steels, including diffusion, trapping, embrittlement risk and prevention. It covers several topics:
1. Studying hydrogen embrittlement and diffusion modeling.
2. Applications including analysis of casting processes, development of a new hydrogen extraction method during casting, analysis of baking treatments, and prediction of hydrogen damage.
3. Ongoing work on hydrogen desorption and permeation.
The document discusses a workshop focused on developing corrosion resistant alloys for naval aviation applications. It provides background on the harsh corrosive environment aircraft operate in for the Navy and Marine Corps. The workshop brought together experts to identify goals, objectives, challenges and approaches for three alloy systems: aluminum, magnesium, and steel. For each alloy system, the group validated objectives, identified technical challenges, and prioritized approaches to overcome the challenges. Critical research areas were established that could help achieve the objectives and advance the development of corrosion resistant alloys for naval aviation.
Inhibition of Sulphuric Acid Corrosion of Mild Steel by Surfactant and Its Ad...IOSR Journals
Abstract: The corrosion inhibition effect of surfactant, N,N-Dimethyl-N-(2-Phenoxyethyl)dodecan-1- aminiumbromide(DPDAB) on mild steel corrosion in 0.5M Sulphuric acid was investigated by weight loss, potentiodynamic polarization and Electrochemical impedance spectroscopic techniques. DPDAB is an excellent inhibitor and its inhibition efficiency increases with increase in concentration and maximum inhibition efficiency was observed above the critical micelle concentration (CMC). The polarization curves reveal that DPDAB acts as mixed type inhibitor with predominantly of anodic type. The corrosion inhibition efficiency of DPDAB increases with increase in concentration and decreases with increase in temperature from 298K to 308K and then increases and shows maxima at 318K and then decreases at 328K.. The adsorption of the inhibitor on the mild steel in 0.5M H2SO4 was found to obey Langmuir’s adsorption isotherm. Scanning electronic microscopy (SEM) confirmed the existence of an adsorbed protective film on the metal surface. The kinetic and thermodynamic parameters were calculated and discussed.
Corrosion monitoring in petroleum refineriesK R SONI
In petroleum refineries, corrosion of equipment takes place all through its operating life. It is essential to monitor the corrosion damage so that timely corrective actions like maintenance / repairs / rehabilitation of equipment can be undertaken before it causes unsafe plant operations.
The techniques employed for systematic corrosion monitoring of refinery equipment have been described in this presentation.
This document reviews materials for corrosion prevention in the oil industry. It discusses how corrosion impacts oil production, transportation, and processing. Common causes of corrosion include mineral acids formed from salts in crude oil. Recent research has focused on developing new corrosion-resistant materials, chemicals to remove water and neutralize acids, and surface-active substances. Various amines, nitrogen compounds, and commercial inhibitors like HERCULES-30617 and DEOL-4241 are used to inhibit corrosion in different operations. The review aims to analyze existing approaches and develop new materials for applications in corrosion prevention.
Control of corrosion on underwater pilesDocumentStory
Corrosion control methods for underwater piles include protective coatings, cathodic protection using sacrificial anodes, and fiber reinforced polymer (FRP) composites. Protective coatings like inorganic zinc silicates and high build epoxy coatings can be applied. Cathodic protection prevents corrosion electrochemically using anodes bonded to the pile. FRP composites are lightweight, strong, and chemically resistant, and can be used to repair piles by restoring their cross-section and tensile capacity.
As an old adage says, corrosion prevention must start at the blackboard, at the design stage. A good design at the blackboard is no more costly than a bad design, a bad design is always more expensive than a good design in reality. Technical design inclu- des the aspects of design that directly bear on the proper technical functioning of the product attributes that describe how it works and how it is made. Design configuration has a critical role to play in the service life of components
Corrosion is the degradation or destruction of a metal due to a reaction with its environment. It occurs via either a chemical or electrochemical process. There are four requirements for electrochemical corrosion to occur: an anode, cathode, electrically conductive medium, and a metallic path connecting the anode and cathode. Corrosion can cause economic losses through damage to structures and equipment, reduce safety, and waste limited metal resources. It is important to study corrosion to prevent failures and catastrophic accidents while extending equipment lifetime in a cost-effective manner.
Introduction to the_high_temperature_oxidation_of_metalsFranyori Torres
This document discusses methods for investigating the high-temperature oxidation of metals. Kinetics measurements involve exposing specimens to oxidizing conditions for periods of time and then examining them. There are uncertainties in determining when oxidation begins. Common techniques to characterize reaction products include measuring mass changes, analyzing gas consumption or product formation, and examining specimen cross-sections using microscopy. Accelerated testing aims to produce representative microstructures in shorter times than actual service conditions.
Hydrogen embrittlement of metals occurs when hydrogen interacts with and degrades the material properties of metals. There are three main mechanisms of hydrogen embrittlement: hydride formation and cracking, hydrogen-enhanced decohesion along grain boundaries, and hydrogen-enhanced localized plasticity. Preventing hydrogen embrittlement requires reducing corrosion and hydrogen exposure to the metal, changing electroplating processes, heat-treating materials to remove hydrogen, and using inherently less susceptible materials. High-strength steels are particularly susceptible to hydrogen embrittlement.
Done by: Sukari group
School name; Omar Bin Khattab secondary school for boys.
The project aimed to study how the investigated triazole derivative controls the corrosion of mild steel in sulfuric acid solutions. The corrosion rates in absence and presence of different concentrations of inhibitor will be measured using weight loss and potentiodynamic polarization techniques. Also, the effect of inhibitor on surface morphology of carbon steel will be investigated using scanning electron microscope.
Corrosion And Its Prevention (Electrochemical Interpretation) Awais Chaudhary
This document discusses corrosion and its prevention through an electrochemical interpretation. It begins by defining corrosion as the deterioration of materials through chemical interaction with the environment, and notes that while it affects many materials, the discussion will focus on iron and steel corrosion. It then provides examples of corrosion, explains why metals corrode in terms of thermodynamics, and outlines the general scheme of corrosion when a metal is immersed in an aqueous solution. The document continues by explaining the electrochemistry of corrosion, including the components of a corrosion cell, current flow, and the mechanism of rusting. It classifies types of corrosion such as uniform, galvanic, crevice, pitting and intergranular corrosion. Finally, it discusses some
This document discusses corrosion and corrosion prevention. It provides definitions of corrosion and explains that corrosion is an electrochemical process that causes the deterioration of materials. Corrosion results in significant economic losses. The document then covers the principles of corrosion including thermodynamics, electrochemistry, metallurgy, and different forms of corrosion such as uniform corrosion, galvanic corrosion, pitting, stress corrosion cracking, and hydrogen embrittlement.
Corrosion, which is the degradation of material due to reactions with the environment, is usually electrochemical in nature. For this reason, an understanding of basic electrochemistry is necessary to the understanding of corrosion. Robert Heidersbach, author of "Metallurgy and Corrosion Control in Oil and Gas Production," will take you on this journey. This presentation is a sample of chapter 2 of his book, which can be found on Google Books.
Experimental study on corrosion of steel in soil mediumeSAT Journals
Abstract
There are many practical situation were steel is exposed to soil. Deterioration of steel in such case it depends upon the nature of soil, more especially the types and the concentration of ions present in the moisture within the soil, since soil vary in nature it is necessary to understand the nature of corrosion of steel in each of soil samples. This aspect was taken for the investigation and present in this paper. The weight and electrochemical methods of evaluating the corrosion rate were used in which four types of soil available around SRM university campus were utilized during the experimental work. Steel coupon of 12mm diameter and 100mm length was used, for each soil three artificial environments were created and electrochemical potential measuring was made for five weeks. The test shows that presence of chlorides ions in the soil create very severe environment and the drying of soil reduce the rate of corrosion.
Keywords, Corrosion of steel, Soil, Weight method, Electrochemical potential method
The document summarizes a student's FYP II VIVA presentation on studying preferential weld corrosion in mild steel with acetic acid. The project aims to investigate how acetic acid and pH affect corrosion rates of weld segments. Literature review findings show that acetic acid increases corrosion by disrupting protective iron carbonate layer formation. Testing of weld specimens in brine with varied acetic acid concentrations and pH values found intrinsic corrosion highest in parent metal, while galvanic corrosion rates were highest for weld metal under some test conditions. Overall results provide insights into influences of acetic acid and pH on preferential weld corrosion.
The document summarizes the 8 main forms of corrosion that can occur in metals. It begins by explaining that corrosion is a natural process that converts refined metals back into more stable forms, driven by thermodynamics. It then describes the key elements that form an electrochemical corrosion cell and discusses various factors that influence corrosion rates. The main types of corrosion covered are uniform corrosion, localized corrosion (including galvanic and crevice corrosion), and stress corrosion cracking. Visual examples of each type of corrosion are provided.
This document provides guidelines on assessing the risk of and mitigating alternating current (AC) corrosion on cathodically protected pipelines. AC corrosion occurs when an AC voltage is induced in a pipeline from a nearby high voltage power line or electrified railway. The guidelines describe the fundamental aspects of AC corrosion including electrical modeling of the pipeline-to-soil impedance and how physical, chemical, and electrochemical factors can influence the impedance and AC current. Laboratory techniques for evaluating AC corrosion risk and mitigation methods such as increasing distance from interference sources, installing isolating joints, and repairing coating damage are also discussed. The main goals are to inform engineers of the AC corrosion problem, demonstrate the risk, and provide practical solutions to reduce
The document discusses new technologies from companies like Clariant, Baker Hughes, and Modumetal for improving corrosion inhibition in offshore oil and gas projects. Clariant tested a new phosphate ester-based inhibitor that showed better inhibition than traditional imidazoline-based inhibitors, particularly in reducing anodic current. Baker Hughes developed antiagglomerant chemistry that addresses pitting corrosion risks while maintaining hydrate inhibition. Modumetal is working on nanolaminated metal coatings that could strengthen components and reduce the need for corrosion inhibitors by delaying electron exchange during corrosion.
This document provides an overview of corrosion, including the mechanisms, types, and environmental factors. It discusses the electrochemical process where the anodic oxidation and cathodic reduction occur simultaneously. Different types of corrosion are described, such as pitting corrosion, crevice corrosion, stray current corrosion, and intergranular corrosion. The mechanisms of various corrosion types are explained, including how galvanic cells form and affect the corrosion rate. Diagrams illustrate concepts like primary vs secondary distribution in a water drop on steel.
UNDERSTANDING AND MITIGATING DOWNHOLE CORROSION AND WEAR FAILURES westernfalcontx
A discussion on different types of corrosion and wear (and their associated mechanisms) followed by an overview of commercially available mitigation techniques, including their practical downhole applications are the focal points of this paper.
A presentation giving the basic principles of corrosion. Electrochemical nature of corrosion, anodic and cathodic reactions, electrode potentials, mixed potential theory and kinetics of corrosion, thermodynamics of corrosion and Pourbaix diagrams, and passivization behavior of metals are outlined.
APPLICATION OF WASTE NATURAL MATERIAL FOR CORROSION INHIBITION OF LOW CARBON ...IRJET Journal
This document summarizes research on using waste natural materials as corrosion inhibitors for low carbon steel in NaCl solutions. Specifically, it investigates the inhibitory effects of onion peel extracts in 1.5M NaCl solution. Testing methods like weight loss measurements, polarization techniques and SEM imaging were used to analyze the protective film formed by onion peel compounds adsorbed on the steel surface. Results found the aqueous onion peel extract inhibited over 90% of corrosion. The researchers concluded onion peel is a promising green corrosion inhibitor for low carbon steel in NaCl environments. Future work could study individual bioactive compounds in onion peel and developing coating layers from extract-treated surfaces.
The document discusses various types of damages that affect equipment, including corrosion, wear and tear, and fatigue. It classifies damages as either technical-economic processes related to equipment obsolescence or technical processes related to changes in the equipment's state. Within technical processes, damages can have either sudden or continuous behavior over time. Common damages are then discussed in more detail, including the causes, mechanisms, and ways to minimize corrosion and wear.
Corrosion monitoring in petroleum refineriesK R SONI
In petroleum refineries, corrosion of equipment takes place all through its operating life. It is essential to monitor the corrosion damage so that timely corrective actions like maintenance / repairs / rehabilitation of equipment can be undertaken before it causes unsafe plant operations.
The techniques employed for systematic corrosion monitoring of refinery equipment have been described in this presentation.
This document reviews materials for corrosion prevention in the oil industry. It discusses how corrosion impacts oil production, transportation, and processing. Common causes of corrosion include mineral acids formed from salts in crude oil. Recent research has focused on developing new corrosion-resistant materials, chemicals to remove water and neutralize acids, and surface-active substances. Various amines, nitrogen compounds, and commercial inhibitors like HERCULES-30617 and DEOL-4241 are used to inhibit corrosion in different operations. The review aims to analyze existing approaches and develop new materials for applications in corrosion prevention.
Control of corrosion on underwater pilesDocumentStory
Corrosion control methods for underwater piles include protective coatings, cathodic protection using sacrificial anodes, and fiber reinforced polymer (FRP) composites. Protective coatings like inorganic zinc silicates and high build epoxy coatings can be applied. Cathodic protection prevents corrosion electrochemically using anodes bonded to the pile. FRP composites are lightweight, strong, and chemically resistant, and can be used to repair piles by restoring their cross-section and tensile capacity.
As an old adage says, corrosion prevention must start at the blackboard, at the design stage. A good design at the blackboard is no more costly than a bad design, a bad design is always more expensive than a good design in reality. Technical design inclu- des the aspects of design that directly bear on the proper technical functioning of the product attributes that describe how it works and how it is made. Design configuration has a critical role to play in the service life of components
Corrosion is the degradation or destruction of a metal due to a reaction with its environment. It occurs via either a chemical or electrochemical process. There are four requirements for electrochemical corrosion to occur: an anode, cathode, electrically conductive medium, and a metallic path connecting the anode and cathode. Corrosion can cause economic losses through damage to structures and equipment, reduce safety, and waste limited metal resources. It is important to study corrosion to prevent failures and catastrophic accidents while extending equipment lifetime in a cost-effective manner.
Introduction to the_high_temperature_oxidation_of_metalsFranyori Torres
This document discusses methods for investigating the high-temperature oxidation of metals. Kinetics measurements involve exposing specimens to oxidizing conditions for periods of time and then examining them. There are uncertainties in determining when oxidation begins. Common techniques to characterize reaction products include measuring mass changes, analyzing gas consumption or product formation, and examining specimen cross-sections using microscopy. Accelerated testing aims to produce representative microstructures in shorter times than actual service conditions.
Hydrogen embrittlement of metals occurs when hydrogen interacts with and degrades the material properties of metals. There are three main mechanisms of hydrogen embrittlement: hydride formation and cracking, hydrogen-enhanced decohesion along grain boundaries, and hydrogen-enhanced localized plasticity. Preventing hydrogen embrittlement requires reducing corrosion and hydrogen exposure to the metal, changing electroplating processes, heat-treating materials to remove hydrogen, and using inherently less susceptible materials. High-strength steels are particularly susceptible to hydrogen embrittlement.
Done by: Sukari group
School name; Omar Bin Khattab secondary school for boys.
The project aimed to study how the investigated triazole derivative controls the corrosion of mild steel in sulfuric acid solutions. The corrosion rates in absence and presence of different concentrations of inhibitor will be measured using weight loss and potentiodynamic polarization techniques. Also, the effect of inhibitor on surface morphology of carbon steel will be investigated using scanning electron microscope.
Corrosion And Its Prevention (Electrochemical Interpretation) Awais Chaudhary
This document discusses corrosion and its prevention through an electrochemical interpretation. It begins by defining corrosion as the deterioration of materials through chemical interaction with the environment, and notes that while it affects many materials, the discussion will focus on iron and steel corrosion. It then provides examples of corrosion, explains why metals corrode in terms of thermodynamics, and outlines the general scheme of corrosion when a metal is immersed in an aqueous solution. The document continues by explaining the electrochemistry of corrosion, including the components of a corrosion cell, current flow, and the mechanism of rusting. It classifies types of corrosion such as uniform, galvanic, crevice, pitting and intergranular corrosion. Finally, it discusses some
This document discusses corrosion and corrosion prevention. It provides definitions of corrosion and explains that corrosion is an electrochemical process that causes the deterioration of materials. Corrosion results in significant economic losses. The document then covers the principles of corrosion including thermodynamics, electrochemistry, metallurgy, and different forms of corrosion such as uniform corrosion, galvanic corrosion, pitting, stress corrosion cracking, and hydrogen embrittlement.
Corrosion, which is the degradation of material due to reactions with the environment, is usually electrochemical in nature. For this reason, an understanding of basic electrochemistry is necessary to the understanding of corrosion. Robert Heidersbach, author of "Metallurgy and Corrosion Control in Oil and Gas Production," will take you on this journey. This presentation is a sample of chapter 2 of his book, which can be found on Google Books.
Experimental study on corrosion of steel in soil mediumeSAT Journals
Abstract
There are many practical situation were steel is exposed to soil. Deterioration of steel in such case it depends upon the nature of soil, more especially the types and the concentration of ions present in the moisture within the soil, since soil vary in nature it is necessary to understand the nature of corrosion of steel in each of soil samples. This aspect was taken for the investigation and present in this paper. The weight and electrochemical methods of evaluating the corrosion rate were used in which four types of soil available around SRM university campus were utilized during the experimental work. Steel coupon of 12mm diameter and 100mm length was used, for each soil three artificial environments were created and electrochemical potential measuring was made for five weeks. The test shows that presence of chlorides ions in the soil create very severe environment and the drying of soil reduce the rate of corrosion.
Keywords, Corrosion of steel, Soil, Weight method, Electrochemical potential method
The document summarizes a student's FYP II VIVA presentation on studying preferential weld corrosion in mild steel with acetic acid. The project aims to investigate how acetic acid and pH affect corrosion rates of weld segments. Literature review findings show that acetic acid increases corrosion by disrupting protective iron carbonate layer formation. Testing of weld specimens in brine with varied acetic acid concentrations and pH values found intrinsic corrosion highest in parent metal, while galvanic corrosion rates were highest for weld metal under some test conditions. Overall results provide insights into influences of acetic acid and pH on preferential weld corrosion.
The document summarizes the 8 main forms of corrosion that can occur in metals. It begins by explaining that corrosion is a natural process that converts refined metals back into more stable forms, driven by thermodynamics. It then describes the key elements that form an electrochemical corrosion cell and discusses various factors that influence corrosion rates. The main types of corrosion covered are uniform corrosion, localized corrosion (including galvanic and crevice corrosion), and stress corrosion cracking. Visual examples of each type of corrosion are provided.
This document provides guidelines on assessing the risk of and mitigating alternating current (AC) corrosion on cathodically protected pipelines. AC corrosion occurs when an AC voltage is induced in a pipeline from a nearby high voltage power line or electrified railway. The guidelines describe the fundamental aspects of AC corrosion including electrical modeling of the pipeline-to-soil impedance and how physical, chemical, and electrochemical factors can influence the impedance and AC current. Laboratory techniques for evaluating AC corrosion risk and mitigation methods such as increasing distance from interference sources, installing isolating joints, and repairing coating damage are also discussed. The main goals are to inform engineers of the AC corrosion problem, demonstrate the risk, and provide practical solutions to reduce
The document discusses new technologies from companies like Clariant, Baker Hughes, and Modumetal for improving corrosion inhibition in offshore oil and gas projects. Clariant tested a new phosphate ester-based inhibitor that showed better inhibition than traditional imidazoline-based inhibitors, particularly in reducing anodic current. Baker Hughes developed antiagglomerant chemistry that addresses pitting corrosion risks while maintaining hydrate inhibition. Modumetal is working on nanolaminated metal coatings that could strengthen components and reduce the need for corrosion inhibitors by delaying electron exchange during corrosion.
This document provides an overview of corrosion, including the mechanisms, types, and environmental factors. It discusses the electrochemical process where the anodic oxidation and cathodic reduction occur simultaneously. Different types of corrosion are described, such as pitting corrosion, crevice corrosion, stray current corrosion, and intergranular corrosion. The mechanisms of various corrosion types are explained, including how galvanic cells form and affect the corrosion rate. Diagrams illustrate concepts like primary vs secondary distribution in a water drop on steel.
UNDERSTANDING AND MITIGATING DOWNHOLE CORROSION AND WEAR FAILURES westernfalcontx
A discussion on different types of corrosion and wear (and their associated mechanisms) followed by an overview of commercially available mitigation techniques, including their practical downhole applications are the focal points of this paper.
A presentation giving the basic principles of corrosion. Electrochemical nature of corrosion, anodic and cathodic reactions, electrode potentials, mixed potential theory and kinetics of corrosion, thermodynamics of corrosion and Pourbaix diagrams, and passivization behavior of metals are outlined.
APPLICATION OF WASTE NATURAL MATERIAL FOR CORROSION INHIBITION OF LOW CARBON ...IRJET Journal
This document summarizes research on using waste natural materials as corrosion inhibitors for low carbon steel in NaCl solutions. Specifically, it investigates the inhibitory effects of onion peel extracts in 1.5M NaCl solution. Testing methods like weight loss measurements, polarization techniques and SEM imaging were used to analyze the protective film formed by onion peel compounds adsorbed on the steel surface. Results found the aqueous onion peel extract inhibited over 90% of corrosion. The researchers concluded onion peel is a promising green corrosion inhibitor for low carbon steel in NaCl environments. Future work could study individual bioactive compounds in onion peel and developing coating layers from extract-treated surfaces.
The document discusses various types of damages that affect equipment, including corrosion, wear and tear, and fatigue. It classifies damages as either technical-economic processes related to equipment obsolescence or technical processes related to changes in the equipment's state. Within technical processes, damages can have either sudden or continuous behavior over time. Common damages are then discussed in more detail, including the causes, mechanisms, and ways to minimize corrosion and wear.
This document is a chapter-by-chapter summary of a document on cathodic protection of pipelines. It discusses the principles of corrosion, forms of corrosion including uniform, galvanic, crevice, pitting and stress corrosion cracking. It explains the mechanisms and prevention methods for different forms of corrosion. The document is intended to provide an overview of corrosion and cathodic protection for pipelines.
Corrosion is the spontaneous reaction between a material like steel and its environment that degrades the material over time. For ships, corrosion poses a major problem as it can compromise the structural integrity of the vessel. There are two main methods to prevent corrosion - cathodic protection, which makes the structure negative to corrosion, and coatings, which act as a barrier between the steel and environment. Effective coatings must adhere well to the steel, be impermeable to water and oxygen, and have a thickness and pigmentation that limits penetration over the life of the coating.
Pitting corrosion is an insidious localized form of corrosion causing much devastating
destruction to structural members such as stainless steel in chloride environment. This
paper gives a review of the mechanism processes of pitting, stages, factors facilitating
pitting corrosion, techniques of evaluating pitting corrosion and some research work on
pitting corrosion. The rudimentary knowledge of the mechanisms of pitting corrosion from
this work will be of assistance to the selection process, specification and the use of stainless
steels and other structural members.
The document discusses corrosion from multiple perspectives. It defines corrosion as the deterioration of metals through chemical or electrochemical reactions with the environment. It notes that understanding chemistry, electrochemistry, and metallurgy is important for understanding corrosion. Corrosion can damage infrastructure and equipment by reducing strength, changing dimensions, and contaminating products. The costs of corrosion are high, with estimates of billions of dollars spent annually to address corrosion in areas like pipelines, structures, and water systems. Proper application of corrosion prevention and control techniques can help reduce these costs.
Corrosion is the deterioration of metals through chemical reactions with the environment. It can structurally weaken materials and equipment, contaminate systems, and is costly to prevent and repair. Corrosion occurs via electrochemical processes where metals oxidize (rust), releasing electrons. Factors like water chemistry, oxygen levels, temperature, and contact with other metals influence corrosion rates. Prevention methods include coating metals, alloying them, inhibiting reactions, or electrochemically controlling corrosion through cathodic protection. Proper material selection, design, and maintenance can significantly extend product lifetimes and reduce corrosion impacts.
Design, Management and Key Success Factors of an Offshore Cathodic Protection...Dr. Amarjeet Singh
Corrosion is a very prevalent issue for offshore
operations in the oil and gas industry. If the corrosion issues
are not addressed adequately, these may lead to quality
failures, safety incidents, compromise to asset integrity and
high inspection costs. This research paper discusses and
analyzes corrosion types, corrosion threats, mechanisms to
protect against corrosion, design and management of cathodic
protection system, and key success factors for a cathodic
protection system for an offshore oil and gas production
system.
The document defines corrosion and discusses its major types and economic impacts. It begins by defining corrosion as the deterioration of metals due to chemical or electrochemical reaction with their environment. It then discusses several types of corrosion including uniform corrosion, galvanic corrosion, pitting corrosion, crevice corrosion, dealloying, and stress corrosion cracking. It explains the mechanisms and examples of each type. The document emphasizes that corrosion has huge economic costs, with estimates of 3-3.5% of GDP lost to corrosion in India and the US each year.
Comparative Investigation of Inhibitive Properties of Newbouldia Laevis (NL) ...IRJET Journal
This document summarizes a study that compares the inhibitive properties of Newbouldia Laevis (NL) and Azadirachta Indica (AZI) leaf extracts on corrosion of high carbon steel in sulphuric acid. Using the gravimetric method, the extracts were tested at various concentrations to determine their effectiveness at preventing corrosion. The study found that NL leaf extract was a more effective inhibitor, achieving 88% efficiency at 0.5g/L, while AZI achieved 71% efficiency at the same concentration. This shows that NL leaf extract is a better corrosion inhibitor for high carbon steel in sulphuric acid than AZI leaf extract.
1. Corrosion is the primary means by which metals deteriorate when exposed to various environments like water, acids, bases, salts, oils, gases, and other chemicals. Understanding metallurgical factors that influence corrosion, like chemical composition, material structure, alloying elements, and heat treatment, is important for controlling corrosion in industries like petroleum and chemicals.
2. Key metallurgical factors that affect corrosion include the chemical composition, material structure, grain boundaries, alloying elements, mechanical properties, heat treatment, surface coating, welding, and manufacturing conditions of metals and alloys.
3. Common forms of corrosion include general corrosion, localized corrosion, intergranular corrosion, stress corrosion cracking, and corrosion
Corrosion is the degradation of materials due to chemical reactions with their surroundings. Metals are particularly susceptible to corrosion, which can occur electrochemically through oxidation or by other chemical processes. Corrosion can damage structures and infrastructure, costing an estimated $276 billion annually in the US alone. Common forms of corrosion include rust, which weakens bridges and causes failures, and glass disease, where aqueous solutions cause corrosion of silicate glasses. Protective measures like passivation and materials selection aim to reduce corrosion and its economic impacts.
ProCoat Specialities provides corrosion protection services including surface preparation, coating application, and inspections. They believe thorough examination and analysis is needed to select the appropriate protection mechanism for different substrates and environments. ProCoat focuses on high quality surface preparation and coating application according to international standards. Their services also include educating clients, inspection reports, and turn-key corrosion protection solutions.
Review on Erosion and Corrosion Studies on Steel WeldmentsIRJET Journal
This document provides an extensive literature review on erosion and corrosion studies carried out on various grades of steel weldments. It discusses different types of erosion and corrosion, parameters that affect erosion rates like particle size and impact angle. Methods to analyze erosion and corrosion rates like weight loss tests and SEM imaging are also summarized. The review focuses on erosion and corrosion behavior of carbon steels like A106 grade steel typically used in pipes under various environmental conditions like chemicals and high temperatures.
This document discusses corrosion in cooling water systems. It outlines the corrosion process and the elements required for corrosion to occur. The rate and type of corrosion are determined by factors at the cathode and anode. Various types of corrosion in cooling water systems are described, including general etch, concentration cell corrosion, cracking, and mechanical damage. Finally, general methods for corrosion inhibition are presented, such as using corrosion resistant materials, coatings, cathodic protection, water chemistry adjustments, and corrosion inhibitors.
This chapter discusses how materials interact with their environments and the various corrosion mechanisms that can occur. It describes five main types of corrosion: uniform corrosion, galvanic corrosion, pitting and crevice corrosion, hydrogen embrittlement, and stress-assisted corrosion. It also discusses methods to prevent corrosion, including material selection, design modifications, cathodic protection, and use of protective coatings. Corrosion represents a huge economic cost, so preventing its deleterious effects on materials is important for engineering applications.
Corrosion causes tens of billions of dollars in damage annually in the US. It deteriorates materials through chemical, electro-chemical, or mechanical-chemical attack. Common types of corrosion for centrifugal pumps include general corrosion, crevice corrosion, pitting corrosion, galvanic corrosion, and erosion corrosion. Proper material selection is important to resist corrosion and extend pump life. Tests should be conducted to evaluate materials under similar operating conditions before finalizing the selection.
Similar to IRJET-Review of Marine Environmental Corrosion and Application of an Anti-Corrosive Coating / Painting System at Hull Portion (20)
TUNNELING IN HIMALAYAS WITH NATM METHOD: A SPECIAL REFERENCES TO SUNGAL TUNNE...IRJET Journal
1) The document discusses the Sungal Tunnel project in Jammu and Kashmir, India, which is being constructed using the New Austrian Tunneling Method (NATM).
2) NATM involves continuous monitoring during construction to adapt to changing ground conditions, and makes extensive use of shotcrete for temporary tunnel support.
3) The methodology section outlines the systematic geotechnical design process for tunnels according to Austrian guidelines, and describes the various steps of NATM tunnel construction including initial and secondary tunnel support.
STUDY THE EFFECT OF RESPONSE REDUCTION FACTOR ON RC FRAMED STRUCTUREIRJET Journal
This study examines the effect of response reduction factors (R factors) on reinforced concrete (RC) framed structures through nonlinear dynamic analysis. Three RC frame models with varying heights (4, 8, and 12 stories) were analyzed in ETABS software under different R factors ranging from 1 to 5. The results showed that displacement increased as the R factor decreased, indicating less linear behavior for lower R factors. Drift also decreased proportionally with increasing R factors from 1 to 5. Shear forces in the frames decreased with higher R factors. In general, R factors of 3 to 5 produced more satisfactory performance with less displacement and drift. The displacement variations between different building heights were consistent at different R factors. This study evaluated how R factors influence
A COMPARATIVE ANALYSIS OF RCC ELEMENT OF SLAB WITH STARK STEEL (HYSD STEEL) A...IRJET Journal
This study compares the use of Stark Steel and TMT Steel as reinforcement materials in a two-way reinforced concrete slab. Mechanical testing is conducted to determine the tensile strength, yield strength, and other properties of each material. A two-way slab design adhering to codes and standards is executed with both materials. The performance is analyzed in terms of deflection, stability under loads, and displacement. Cost analyses accounting for material, durability, maintenance, and life cycle costs are also conducted. The findings provide insights into the economic and structural implications of each material for reinforcement selection and recommendations on the most suitable material based on the analysis.
Effect of Camber and Angles of Attack on Airfoil CharacteristicsIRJET Journal
This document discusses a study analyzing the effect of camber, position of camber, and angle of attack on the aerodynamic characteristics of airfoils. Sixteen modified asymmetric NACA airfoils were analyzed using computational fluid dynamics (CFD) by varying the camber, camber position, and angle of attack. The results showed the relationship between these parameters and the lift coefficient, drag coefficient, and lift to drag ratio. This provides insight into how changes in airfoil geometry impact aerodynamic performance.
A Review on the Progress and Challenges of Aluminum-Based Metal Matrix Compos...IRJET Journal
This document reviews the progress and challenges of aluminum-based metal matrix composites (MMCs), focusing on their fabrication processes and applications. It discusses how various aluminum MMCs have been developed using reinforcements like borides, carbides, oxides, and nitrides to improve mechanical and wear properties. These composites have gained prominence for their lightweight, high-strength and corrosion resistance properties. The document also examines recent advancements in fabrication techniques for aluminum MMCs and their growing applications in industries such as aerospace and automotive. However, it notes that challenges remain around issues like improper mixing of reinforcements and reducing reinforcement agglomeration.
Dynamic Urban Transit Optimization: A Graph Neural Network Approach for Real-...IRJET Journal
This document discusses research on using graph neural networks (GNNs) for dynamic optimization of public transportation networks in real-time. GNNs represent transit networks as graphs with nodes as stops and edges as connections. The GNN model aims to optimize networks using real-time data on vehicle locations, arrival times, and passenger loads. This helps increase mobility, decrease traffic, and improve efficiency. The system continuously trains and infers to adapt to changing transit conditions, providing decision support tools. While research has focused on performance, more work is needed on security, socio-economic impacts, contextual generalization of models, continuous learning approaches, and effective real-time visualization.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
This document provides a review of machine learning techniques used in Advanced Driver Assistance Systems (ADAS). It begins with an abstract that summarizes key applications of machine learning in ADAS, including object detection, recognition, and decision-making. The introduction discusses the integration of machine learning in ADAS and how it is transforming vehicle safety. The literature review then examines several research papers on topics like lightweight deep learning models for object detection and lane detection models using image processing. It concludes by discussing challenges and opportunities in the field, such as improving algorithm robustness and adaptability.
Long Term Trend Analysis of Precipitation and Temperature for Asosa district,...IRJET Journal
The document analyzes temperature and precipitation trends in Asosa District, Benishangul Gumuz Region, Ethiopia from 1993 to 2022 based on data from the local meteorological station. The results show:
1) The average maximum and minimum annual temperatures have generally decreased over time, with maximum temperatures decreasing by a factor of -0.0341 and minimum by -0.0152.
2) Mann-Kendall tests found the decreasing temperature trends to be statistically significant for annual maximum temperatures but not for annual minimum temperatures.
3) Annual precipitation in Asosa District showed a statistically significant increasing trend.
The conclusions recommend development planners account for rising summer precipitation and declining temperatures in
P.E.B. Framed Structure Design and Analysis Using STAAD ProIRJET Journal
This document discusses the design and analysis of pre-engineered building (PEB) framed structures using STAAD Pro software. It provides an overview of PEBs, including that they are designed off-site with building trusses and beams produced in a factory. STAAD Pro is identified as a key tool for modeling, analyzing, and designing PEBs to ensure their performance and safety under various load scenarios. The document outlines modeling structural parts in STAAD Pro, evaluating structural reactions, assigning loads, and following international design codes and standards. In summary, STAAD Pro is used to design and analyze PEB framed structures to ensure safety and code compliance.
A Review on Innovative Fiber Integration for Enhanced Reinforcement of Concre...IRJET Journal
This document provides a review of research on innovative fiber integration methods for reinforcing concrete structures. It discusses studies that have explored using carbon fiber reinforced polymer (CFRP) composites with recycled plastic aggregates to develop more sustainable strengthening techniques. It also examines using ultra-high performance fiber reinforced concrete to improve shear strength in beams. Additional topics covered include the dynamic responses of FRP-strengthened beams under static and impact loads, and the performance of preloaded CFRP-strengthened fiber reinforced concrete beams. The review highlights the potential of fiber composites to enable more sustainable and resilient construction practices.
Survey Paper on Cloud-Based Secured Healthcare SystemIRJET Journal
This document summarizes a survey on securing patient healthcare data in cloud-based systems. It discusses using technologies like facial recognition, smart cards, and cloud computing combined with strong encryption to securely store patient data. The survey found that healthcare professionals believe digitizing patient records and storing them in a centralized cloud system would improve access during emergencies and enable more efficient care compared to paper-based systems. However, ensuring privacy and security of patient data is paramount as healthcare incorporates these digital technologies.
Review on studies and research on widening of existing concrete bridgesIRJET Journal
This document summarizes several studies that have been conducted on widening existing concrete bridges. It describes a study from China that examined load distribution factors for a bridge widened with composite steel-concrete girders. It also outlines challenges and solutions for widening a bridge in the UAE, including replacing bearings and stitching the new and existing structures. Additionally, it discusses two bridge widening projects in New Zealand that involved adding precast beams and stitching to connect structures. Finally, safety measures and challenges for strengthening a historic bridge in Switzerland under live traffic are presented.
React based fullstack edtech web applicationIRJET Journal
The document describes the architecture of an educational technology web application built using the MERN stack. It discusses the frontend developed with ReactJS, backend with NodeJS and ExpressJS, and MongoDB database. The frontend provides dynamic user interfaces, while the backend offers APIs for authentication, course management, and other functions. MongoDB enables flexible data storage. The architecture aims to provide a scalable, responsive platform for online learning.
A Comprehensive Review of Integrating IoT and Blockchain Technologies in the ...IRJET Journal
This paper proposes integrating Internet of Things (IoT) and blockchain technologies to help implement objectives of India's National Education Policy (NEP) in the education sector. The paper discusses how blockchain could be used for secure student data management, credential verification, and decentralized learning platforms. IoT devices could create smart classrooms, automate attendance tracking, and enable real-time monitoring. Blockchain would ensure integrity of exam processes and resource allocation, while smart contracts automate agreements. The paper argues this integration has potential to revolutionize education by making it more secure, transparent and efficient, in alignment with NEP goals. However, challenges like infrastructure needs, data privacy, and collaborative efforts are also discussed.
A REVIEW ON THE PERFORMANCE OF COCONUT FIBRE REINFORCED CONCRETE.IRJET Journal
This document provides a review of research on the performance of coconut fibre reinforced concrete. It summarizes several studies that tested different volume fractions and lengths of coconut fibres in concrete mixtures with varying compressive strengths. The studies found that coconut fibre improved properties like tensile strength, toughness, crack resistance, and spalling resistance compared to plain concrete. Volume fractions of 2-5% and fibre lengths of 20-50mm produced the best results. The document concludes that using a 4-5% volume fraction of coconut fibres 30-40mm in length with M30-M60 grade concrete would provide benefits based on previous research.
Optimizing Business Management Process Workflows: The Dynamic Influence of Mi...IRJET Journal
The document discusses optimizing business management processes through automation using Microsoft Power Automate and artificial intelligence. It provides an overview of Power Automate's key components and features for automating workflows across various apps and services. The document then presents several scenarios applying automation solutions to common business processes like data entry, monitoring, HR, finance, customer support, and more. It estimates the potential time and cost savings from implementing automation for each scenario. Finally, the conclusion emphasizes the transformative impact of AI and automation tools on business processes and the need for ongoing optimization.
Multistoried and Multi Bay Steel Building Frame by using Seismic DesignIRJET Journal
The document describes the seismic design of a G+5 steel building frame located in Roorkee, India according to Indian codes IS 1893-2002 and IS 800. The frame was analyzed using the equivalent static load method and response spectrum method, and its response in terms of displacements and shear forces were compared. Based on the analysis, the frame was designed as a seismic-resistant steel structure according to IS 800:2007. The software STAAD Pro was used for the analysis and design.
Cost Optimization of Construction Using Plastic Waste as a Sustainable Constr...IRJET Journal
This research paper explores using plastic waste as a sustainable and cost-effective construction material. The study focuses on manufacturing pavers and bricks using recycled plastic and partially replacing concrete with plastic alternatives. Initial results found that pavers and bricks made from recycled plastic demonstrate comparable strength and durability to traditional materials while providing environmental and cost benefits. Additionally, preliminary research indicates incorporating plastic waste as a partial concrete replacement significantly reduces construction costs without compromising structural integrity. The outcomes suggest adopting plastic waste in construction can address plastic pollution while optimizing costs, promoting more sustainable building practices.
artificial intelligence and data science contents.pptxGauravCar
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
Artificial intelligence (AI) | Definitio
Design and optimization of ion propulsion dronebjmsejournal
Electric propulsion technology is widely used in many kinds of vehicles in recent years, and aircrafts are no exception. Technically, UAVs are electrically propelled but tend to produce a significant amount of noise and vibrations. Ion propulsion technology for drones is a potential solution to this problem. Ion propulsion technology is proven to be feasible in the earth’s atmosphere. The study presented in this article shows the design of EHD thrusters and power supply for ion propulsion drones along with performance optimization of high-voltage power supply for endurance in earth’s atmosphere.
Applications of artificial Intelligence in Mechanical Engineering.pdfAtif Razi
Historically, mechanical engineering has relied heavily on human expertise and empirical methods to solve complex problems. With the introduction of computer-aided design (CAD) and finite element analysis (FEA), the field took its first steps towards digitization. These tools allowed engineers to simulate and analyze mechanical systems with greater accuracy and efficiency. However, the sheer volume of data generated by modern engineering systems and the increasing complexity of these systems have necessitated more advanced analytical tools, paving the way for AI.
AI offers the capability to process vast amounts of data, identify patterns, and make predictions with a level of speed and accuracy unattainable by traditional methods. This has profound implications for mechanical engineering, enabling more efficient design processes, predictive maintenance strategies, and optimized manufacturing operations. AI-driven tools can learn from historical data, adapt to new information, and continuously improve their performance, making them invaluable in tackling the multifaceted challenges of modern mechanical engineering.
An improved modulation technique suitable for a three level flying capacitor ...IJECEIAES
This research paper introduces an innovative modulation technique for controlling a 3-level flying capacitor multilevel inverter (FCMLI), aiming to streamline the modulation process in contrast to conventional methods. The proposed
simplified modulation technique paves the way for more straightforward and
efficient control of multilevel inverters, enabling their widespread adoption and
integration into modern power electronic systems. Through the amalgamation of
sinusoidal pulse width modulation (SPWM) with a high-frequency square wave
pulse, this controlling technique attains energy equilibrium across the coupling
capacitor. The modulation scheme incorporates a simplified switching pattern
and a decreased count of voltage references, thereby simplifying the control
algorithm.
Software Engineering and Project Management - Introduction, Modeling Concepts...Prakhyath Rai
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
Discover the latest insights on Data Driven Maintenance with our comprehensive webinar presentation. Learn about traditional maintenance challenges, the right approach to utilizing data, and the benefits of adopting a Data Driven Maintenance strategy. Explore real-world examples, industry best practices, and innovative solutions like FMECA and the D3M model. This presentation, led by expert Jules Oudmans, is essential for asset owners looking to optimize their maintenance processes and leverage digital technologies for improved efficiency and performance. Download now to stay ahead in the evolving maintenance landscape.
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.