Abstract
This work focuses on a demonstration of the monitoring of corrosion processes taking place in high strength steel in automotive applications. This is performed by means of a corrosion sensor, which operates as an electrical resistance sensor. It was developed from the same type of material that is used for the high-strength steel parts produced in the automotive industry. Using the sensor, real time corrosion processes can be measured. It is attached to a location inside the vehicle’s engine and is equipped with a data logger, which enables wireless transfer of the measured data. In this study the development, operation, and evaluation of the monitoring process are presented. Corrosion estimation is verified by means of electrochemical methods. A metallographic investigation was included in order to verify the similarity between the microstructural properties of the sensor and those of the as-received high-strength steel sheet.
Highlights
In recent years new high strength steels have been developed for use in applications in the automotive industry
The use of an electrical resistance sensor designed from high strength steel was presented for monitoring steel corrosion in an automotive application by real time exposure
The sensors were designed and made from high strength steel used in the automotive industry with dimensions that can fit into the inner parts of a vehicle’s carrosserie
Summary
In recent years new high strength steels have been developed for use in applications in the automotive industry These special steels retain all the good properties of ordinary steel, but, due to their higher strength, thinner cross-sections of the materials can be used. The common properties of these high strength steels are those with appreciable crash behavior, relatively high yield and tensile strength, and an A80 elongation that is typically higher than 30%. For this reason structural components that take part in energy absorption during crash situations can have reduced thicknesses, resulting in final lighter weights of vehicles
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