Damage mechanisms of ultrahigh strength steels in bending application to a trip steel

International audienceIn order to optimize their metallurgical quality, the present study aims at understanding damage mechanisms involved in bending of Ultra High Strength Steels (UHSSs). It focuses on a TRansformation Induced Plasticity (TRIP)-aided steel. This work is based on three complementary approaches: first, instrumented V-bending and stretch bending tests that are usually performed to compare the bending behaviour of various steels, then, metallographic observations carried out to investigate damage initiation and finally, simulation of bending tests by finite element methods. Three-point-bending and stretch bending tests involve different crack initiation areas. Metallographic observations performed on V-bent specimens show crack initiation just below the outer surface, whereas in a stretch bending test, the crack clearly initiates from the central segregation (if any). V-bending tests were modelled with a finite element simulation approach to assess the stress and strain fields by comparison with experimental results. Modelling of stretch bending is currently in progress

Analysis of hydrogen absorption - desorption mechanisms in Al-Si coated high strength steel during hot stamping process

Please click Additional Files below to see the full abstrac

Oxidation potential and barrier effects of Cr-based coatings on aluminized press- hardened steels

Please click Additional Files below to see the full abstrac

Harvesting European knowledge on soil functions and land management using multi-criteria decision analysis

Soil and its ecosystem functions play a societal role in securing sustainable food production while safeguarding natural resources. A functional land management framework has been proposed to optimize the agro-environmental outputs from the land and specifically the supply and demand of soil functions such as (a) primary productivity, (b) carbon sequestration, (c) water purification and regulation, (d) biodiversity and (e) nutrient cycling, for which soil knowledge is essential. From the outset, the LANDMARK multi-actor research project integrates harvested knowledge from local, national and European stakeholders to develop such guidelines, creating a sense of ownership, trust and reciprocity of the outcomes. About 470 stakeholders from five European countries participated in 32 structured workshops covering multiple land uses in six climatic zones. The harmonized results include stakeholders’ priorities and concerns, perceptions on soil quality and functions, implementation of tools, management techniques, indicators and monitoring, activities and policies, knowledge gaps and ideas. Multi-criteria decision analysis was used for data analysis. Two qualitative models were developed using Decision EXpert methodology to evaluate “knowledge” and “needs”. Soil quality perceptions differed across workshops, depending on the stakeholder level and regionally established terminologies. Stakeholders had good inherent knowledge about soil functioning, but several gaps were identified. In terms of critical requirements, stakeholders defined high technical, activity and policy needs in (a) financial incentives, (b) credible information on improving more sustainable management practices, (c) locally relevant advice, (d) farmers’ discussion groups, (e) training programmes, (f) funding for applied research and monitoring, and (g) strengthening soil science in education.</p

Des lésions nerveuses consécutives aux fractures de jambe : traitement /

Univ., Diss.--Nancy, 1888

The i2connect mid-term conference in Mosonmagyaróvár Hungary, 9-11 November 2022

The i2connect mid-term Conference for advisors in agriculture and forestry took place in Mosonmagyaróvár/Hungary in November 2022. This video summarizes some of the topics discussed at the conference including the concept of interactive innovation, skills for advisors, enabling environment, practical cases, role play, and field visits

La condition juridique du congreganiste

OPLADEN-RUG0