Corrosion in the News: June 1, 2020 Roundup
This week we explore a new testing specification created by ASTM for rebar corrosion, two corrosion events affected by the COVID-19 pandemic, and a new material simulation method that uses artificial intelligence.
Welcome to the early June 2020 Corrosionpedia News Roundup. Corrosionpedia releases a fresh News Roundup every other week to provide a summary of the most important headlines in the world of corrosion prevention, monitoring and science. This week, we explore a new testing specification created by ASTM for rebar corrosion rates. Also highlighted are two global corrosion associations that have changed some aspects of their most popular events due to the COVID-19 pandemic, a motorcycle manufacturer that issued a recall because of corrosion in some of its brake systems, and a new material simulation method that uses artificial intelligence to speed analysis.
New ASTM Standard Being Developed for Rebar Corrosion Testing
The American Society for Testing and Materials (ASTM) is working to release a new standard that will provide a consistent testing method for measuring the corrosion rate of uncoated concrete reinforcing bars. Several testing processes are covered in the new standard, including potentiostatic, electrical impedance spectroscopy (EIS) and galvanostatic tests. ASTM formed a subcommittee for the effort and is continuing to bring industry experts into the group to help draft the standard. While manufacturers of rebar corrosion testing equipment provide their own documentation on how to test corrosion rates, ASTM says the reason for creating a standard is to align testing companies on their methodologies and ensure that best practices are being used universally.
CORROSION 2020 Completely Cancelled Due to COVID-19
NACE International has recently decided to completely cancel the CORROSION 2020 conference due to the COVID-19 pandemic. NACE International’s CORROSION conference is the largest conference on corrosion in the world. The CEO of NACE released a letter stating that in addition to NACE weighing the health concerns of having the conference in June, the state of Texas is still limiting in-person gatherings. This means that holding the conference would violate current guidance from the state. The CORROSION 2020 conference was originally scheduled for March 15-19, 2020 in Houston, Texas, but the COVID-19 outbreak prompted NACE to postpone the conference until June. Rather than postponing again, NACE is looking ahead to CORROSION 2021, which will take place in Salt Lake City, UT.
White Graphene Prevents Bacterial Corrosion in Pipes
Researchers at the South Dakota School of Mines & Technology are working to determine if two-dimensional coating materials can be used to inhibit biologically induced corrosion in pipelines. Sulfate-reducing microorganisms in wastewater, hydrocarbon and other types of pipelines are one of the main drivers of corrosion. Because they produce hydrogen sulfide, their effect is one of the biggest corrosion threats to pipelines. While thicker polymeric coatings have been used, they can be ineffective as they themselves corrode or prevent functionality of the pipeline system. The researchers on the project are using a substance known as white graphene (a two-dimensional structure of boron nitride) as the coating material. White graphene has properties similar to that of traditional graphene, except rather than being electrically conductive, it is insulative against electricity.
Motorcycle Corrosion Prompts Recall
Royal Enfield, one of the world’s largest motorcycle manufacturers in the world, has issued a recall for several models of its recently produced motorbikes due to a corrosion concern with their braking systems. About 15,000 of the Interceptor 650, Continental GT 650 and Himalayan models in the United Kingdom, Korea and the European Union have been recalled.
The corrosion issue on the braking system is related to the brake caliper piston bore. In areas where salt and other chemical deicers are used, corrosion could be accelerated on the brake caliper piston bore to the point where braking sound and braking performance begin to deviate from normal operating characteristics. The company states that the recall is a precautionary service intervention. The recall will involve part replacement at first, but eventually a modified component will be made that will not be as susceptible to corrosion.
New Artificial Intelligence Testing Method Could Help with Fracture Analysis and Corrosion Prevention
Scientists at the Massachusetts Institute of Technology in Cambridge, MA have come up with a new method for determining a material's characteristics using artificial intelligence. During development, researchers used artificial intelligence to create an alternative analysis of a material's fracture mechanics over traditional molecular dynamics simulations and finite element analysis. While molecular dynamics simulations can provide accurate data around material characteristics, the computations required means the process takes a great deal of time. To make the process quicker, scientists employed machine learning. They ran simulations for a variety of coating materials, input the data into the artificial intelligence system, and looked to see if the machine could predict the fracture mechanics of a different material. The artificial intelligence system was several times faster than traditional methods. The team mentioned that using artificial intelligence to perform failure analysis may not be limited to fracture analysis, but could be used to aid in the computer analysis of material corrosion.
Australasian Corrosion Association Annual Meeting Held Online
The Australasian Corrosion Association (ACA), one of the world’s largest corrosion associations, held its Annual General Meeting on May 27, 2020. Unlike previous years, this year’s meeting was held online due to the COVID-19 pandemic. All members were welcome to join the meeting and vote. The agenda for the meeting involved a recap of last year’s meeting minutes and a presentation of the annual report. The chairman of the ACA, Richard Reilly, sent out a reminder prior to the meeting for those able to attend and mentioned the success of the ACA webinars and blended virtual instruction of the Coating Inspector Program training during the pandemic. Reilly also mentioned that there would be no May 2020 issue of the Corrosion and Materials magazine that the organization normally publishes and that future issues will be postponed as well.