Browsing by Author "Frómeta Gutiérrez, David"
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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 AccessCrashworthiness 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 ... -
Determination of the essential work of fracture at high strain rates
Frómeta Gutiérrez, David; Casellas Padró, Daniel; Jonsén, Par (2017)
Conference report
Open AccessDuring the last decades, the use of ultra-high strength steel (UHSS) has increased as its favorable ratio between strength and mass allows the design of lighter body-in-white while maintaining passenger safety. Modeling ... -
Efecto de la predeformación en el trabajo esencial de fractura en aceros AHSS y en acero convencional
Frómeta Gutiérrez, David (Universitat Politècnica de Catalunya, 2015-04)
Master thesis
Restricted access - author's decisionLa aparición de nuevos aceros como los aceros avanzados de alta resistencia (AHSS de su acrónimo en inglés, Advanced High Strength Steels), con límites elásticos mucho más grandes y que presentan menores valores de ductilidad, ... -
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 AccessIn 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 mechanics based modelling of failure in advanced high strength steels
Jonsén, Par; Frómeta Gutiérrez, David; Casellas Padró, Daniel (2017)
Conference report
Open AccessIn the last decade, the favorable properties of the press hardening process for advanced high strength steel (AHSS) have increased the demands concerning passenger safety and lightweight design. AHSS show excellent mechanical ... -
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 AccessThe 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 measurements to understand local ductility of advanced high strength steels
Frómeta Gutiérrez, David (Institute of Physics (IOP), 2019-10-01)
Article
Open AccessThe determination of the material parameters that best predict the local ductility of high strength sheet materials has become the focus of active research. Even though several correlations have been proposed, they can ... -
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 AccessThe 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 AccessThe 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 ... -
Journal of Physics: Conference Series
Calvo Muñoz, Jessica; Frómeta Gutiérrez, David; Molas Busquets, Sílvia; Casellas Padró, Daniel (Institute of Physics (IOP), 2017)
Article
Open AccessLightweight designs and demanding safety requirements in automotive industry are increasingly promoting the use of Advanced High Strength Steel (AHSS) sheets. Such steels present higher strength (above 800 MPa) but lower ... -
Microstructural effects on fracture toughness of ultra-high strength dual phase sheet steels
Frómeta Gutiérrez, David; Cuadrado Lafoz, Nuria; Rehrl, Johannes; Suppan, Clemens; Dieudonné, Thomas; Dietsch, Pascal; Calvo Muñoz, Jessica; Casellas Padró, Daniel (2021-01-20)
Article
Open AccessThe influence of the microstructure on the fracture toughness of two industrially processed 1000 MPa dual-phase (DP) steel grades is investigated. Crack initiation and propagation resistance are evaluated by means of the ... -
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 AccessFracture 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 policyAutomotive 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 ... -
On the measurement of fracture toughness to understand the cracking resistance of advanced high strength steel sheets
Frómeta Gutiérrez, David (2021-01-28)
Doctoral thesis
Open AccessAutomotive designers are constantly facing new challenges to meet the more and more stringent safety and CO2 emission legislations. Concerning the latter, vehicle lightweighting has become one of the main goals of the ... -
Projecte tècnic de les instal·lacions d'un centre de formació
Frómeta Gutiérrez, David (Universitat Politècnica de Catalunya, 2009-01)
Master thesis (pre-Bologna period)
Open AccessAquest projecte consisteix en el càlcul i disseny de les instal·lacions d’una llar d’infants. El projecte està centrat bàsicament en les següents instal·lacions: - Sanejament - Fontaneria - Electricitat - Protecció ...