Browsing by Author "Lara, Antoni"

Now showing items 1-10 of 10

    • A fracture mechanics approach to develop high crash resistant microstructures by press hardening 

      Casellas Padró, Daniel; Frómeta Gutiérrez, David; Lara, Antoni; Molas Busquets, Sílvia; Jonsén, Par (2017)
      Conference report
      Open Access
      Crashworthiness is a relevant engineering property for car parts. However it is not easy to measure at laboratory scale and complex impact tests have to be carried out to determine it. Crash re-sistance for high strength ...

    • Effect of sandblasting on low and high-cycle fatigue behaviour after mechanical cutting of a twinning-induced plasticity steel 

      Lara, Antoni; Roca Puigvert, Mercè; Parareda, Sergi; Cuadrado Lafoz, Nuria; Calvo Muñoz, Jessica; Casellas Padró, Daniel (2018)
      Conference report
      Open Access
      In the last years, car bodies are increasingly made with new advanced high-strength steels, for both lightweighting and safety purposes. Among these new steels, high-manganese or TWIP steels exhibit a promising combination ...

    • Evaluation of essential work of fracture in a dual phase high strength steel sheet 

      Gutierrez, David; Pérez Caro, Lluís; Lara, Antoni; Casellas Padró, Daniel; Prado Pozuelo, José Manuel (2013-01)
      Article
      Open Access
      La tenacidad de fractura de aceros de alta resistencia (AHSS), es una propiedad interesante para optimizar el com- portamiento a impacto, pero su caracterización experimental en chapas metálicas es compleja debido a su ...

    • Fatigue resistance evaluation of high Mn-TWIP steel through damage mechanics: A new method based on stiffness evolution 

      Parareda Oriol, Sergi; Casellas Padró, Daniel; Lara, Antoni; Mateo García, Antonio Manuel (2022-03-01)
      Article
      Open Access
      The work presented here deals with the implementation of a new methodology that allows fast and reliable determination of the fatigue strength. It is based on monitoring the specimen stiffness changes at different stress ...

    • Fatigue resistance of press hardened 22MnB5 steels 

      Parareda, Sergi; Casellas Padró, Daniel; Frómeta Gutiérrez, David; Lara, Antoni; Pujante Agudo, Jaume (2020-01-01)
      Article
      Open Access
      In press hardened steels, fatigue behaviour is very sensitive to surface defects or irregularities, either intrinsic or introduced during trimming operations. This work addresses the understanding and prediction of fatigue ...

    • Fracture resistance of advanced high-strength steel sheets for automotive applications 

      Frómeta Gutiérrez, David; Lara, Antoni; Grifé, Laura; Dieudonné, Thomas; Dietsch, Pascal; Rehrl, Johannes; Suppan, Clemens; Casellas Padró, Daniel; Calvo Muñoz, Jessica (2021-01-03)
      Article
      Open Access
      The fracture resistance of different advanced high strength steel (AHSS) sheets for automotive applications is investigated through conventional tensile tests, fracture toughness measurements and hole expansion tests. ...

    • Fracture toughness to understand stretch-flangeability and edge cracking resistance in AHSS 

      Casellas Padró, Daniel; Lara, Antoni; Frómeta Gutiérrez, David; Gutierrez Castillo, David; Molas Busquets, Sílvia; Pérez Caro, Lluís; Rehrl, Johannes; Suppan, Clemens (2016-10-20)
      Article
      Open Access
      The edge fracture is considered as a high risk for automotive parts, especially for parts made of advanced high strength steels (AHSS). The limited ductility of AHSS makes them more sensitive to the edge damage. The ...

    • Identification of fracture toughness parameters to understand the fracture resistance of advanced high strength sheet steels 

      Frómeta Gutiérrez, David; Parareda, Sergi; Lara, Antoni; Molas Busquets, Sílvia; Casellas Padró, Daniel; Jonsén, P.; Calvo Muñoz, Jessica (2020-04-15)
      Article
      Open Access
      The fracture toughness of four advanced high strength steel (AHSS) thin sheets is evaluated through different characterization methodologies, with the aim of identifying the most relevant toughness parameters to describe ...

    • New tool to evaluate the fracture resistance of thin high strength metal sheets 

      Frómeta Gutiérrez, David; Lara, Antoni; Parareda Oriol, Sergi; Grifé, Laura; Casellas Padró, Daniel (Institute of Physics (IOP), 2020-11-19)
      Article
      Open Access
      Fracture toughness has become a key property to predict the fracture performance of high strength metal sheets (edge cracking resistance, crash failure behaviour, local formability, etc.). However, the measurement of the ...

    • On the correlation between fracture toughness and crash resistance of advanced high strength steels 

      Frómeta Gutiérrez, David; Lara, Antoni; Molas Busquets, Sílvia; Casellas Padró, Daniel; Rehrl, Johannes; Suppan, Clemens; Larour, Patrick; Calvo Muñoz, Jessica (2019-01-01)
      Article
      Restricted access - publisher's policy
      Automotive industry players have devoted large efforts to identify the material parameters governing the crash resistance of Advanced High Strength Steels (AHSS). Such knowledge is essential to improve impact performance ...