Research project

Monitoring and Modelling of Advanced Adaptive Welding Process Systems for Ultra- High Strength Steel (UHSS)
Adaptiivisen mittaus- ja säätöjärjestelmän kehittäminen suurlujuusterästen (UHSS) hitsaukseen

Project Details

Start date: 01/09/2015

End date: 31/08/2018



Academy of Finland


Structural steels with yield strength of 900 MPa and above are classified as ultra-high strength steels (UHSS). UHSS is considered viable for use in Finland because of its ability to withstand cold temperatures and UHSS is considered a suitable option for bio-energy infrastructure. UHSS can be formed into sections that can be up to 10 to 15 percent thinner than normal steel without sacrificing strength, which enables weight reduction and improved fuel economy in transportation applications. Furthermore, UHSS can be machined into complex shapes that can be welded into structural components such as pillars and bumpers. The challenge of sustainable energy capacity is increasingly becoming crucial for the countries of the European Union and a greater challenge that appears is to keep production cost competiveness and create job opportunity. In renewable energy, the construction of wind power, bio-energy and nuclear power plant, it is impossible to avoid welding the parts and take the great advantage offered by the UHSS. However, the fact is, nowadays there is no welding unit that can combine high productivity (high-speed, high-quality) to ensure welding UHSS flawless. Unfortunately, the welding procedure specification (WPS) allows just reducing the risk of defects. Therefore, there is a need to develop a system of adaptive welding with sensors and artificial intelligence that predict and ensure the effective realization of flawless weld joint.

LUT Focus Areas

Last updated on 2021-16-11 at 10:01