Browsing by Author "Casellas Padró, Daniel"
Now showing items 21-40 of 45
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FIB/FESEM experimental and analytical assessment of R-curve behavior of WC-Co cemented carbides
Tarragó Cifre, Jose María; Jiménez Piqué, Emilio; Schneider, Ludwig; Casellas Padró, Daniel; Torres, Y.; Llanes Pitarch, Luis Miguel (2015-10-01)
Article
Open AccessExceptional fracture toughness levels exhibited by WC-Co cemented carbides (hardmetals) are due mainly to toughening derived from plastic stretching of crack-bridging ductile enclaves. This takes place due to the development ... -
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 characterization of advanced high strength steels by means of the essential work of fracture
Llobet Lorenzo, Alberto; Casellas Padró, Daniel; Riera Colom, María Dolores; Prado Pozuelo, José Manuel (2008)
Conference report
Restricted access - publisher's policyFracture toughness cannot be readily measured in metal sheet because the small thickness in which they are used (1-3 mm). In this sense the essential work of fracture (EWF) has been successfully applied to determine ... -
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 ... -
Geometry of nanoindentation cube-corner cracks observed by FIB tomography: Implication for fracture resistance estimation
Cuadrado Lafoz, Nuria; Seuba, J.; Casellas Padró, Daniel; Anglada, M.; Jiménez Piqué, Emilio (Elsevier, 2015-09-01)
Article
Open AccessWhen indenting a brittle material with a sharp indenter, cracks can be generated at the corners of the imprint. From the length of these cracks, the fracture resistance can be estimated. This technique is simple and allows ... -
Hard cutting of tailored hardened 22MnB5
Laumann, Till; Picas Anfruns, Ingrid; Grané, Marc; Casellas Padró, Daniel; Riera Colom, María Dolores; Valls, Isaac (Technischen Universität Graz, 2010)
Conference report
Restricted access - publisher's policyIn the present work, the feasibility of creating low strength zones in flanges of tailored hardened 22MnB5 is evaluated by means of the combining high and low thermal conductivity tool materials. Finite Element (FE) ... -
High temperature scratch testing of hard PVD coatings deposited on surface treated tool steel
Pujante, Jaume; Vilaseca, Montserrat; Casellas Padró, Daniel; Riera Colom, María Dolores (2014-09-15)
Article
Open AccessScratch testing is one of the most usual characterisation techniques for systems with thin hard coatings. Scratch tests are performed at run at room temperature, due to the risk of degradation of the indenter diamond tip ... -
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 ... -
Measuring the fracture toughness of single WC grains of cemented carbides by means of microcantilever bending and micropillar splitting
Ortiz Membrado, Laia; Cuadrado Lafoz, Nuria; Casellas Padró, Daniel; Roa Rovira, Joan Josep; Llanes Pitarch, Luis Miguel; Jiménez Piqué, Emilio (2021-08-01)
Article
Restricted access - publisher's policyThe main goal of this work is to obtain a reliable value of the fracture toughness of single grains of tungsten carbide (WC). It is attempted by testing microcantilever and micropillar samples shaped out, by means of focused ... -
Micro-mechanical damage in tool steels analyzed by acoustic emission technique
Picas Anfruns, Ingrid; Martínez González, Eva; Casellas Padró, Daniel; Romeu Garbí, Jordi (2012-12-30)
Article
Restricted access - publisher's policyThe carbides in tool steels act as hard particles and dictate the wear resistance. The origin of failure of these steels is mostly related with the carbide cracking, as a nucleation site of final cracks. This paper shows ... -
Micromecanismos de daño sub-superficiales inducidos por indentación esférica en aceros herramientas recubiertos
Ramírez Sandoval, Giselle; Jiménez Piqué, Emilio; Mestra Rodríguez, Álvaro Miguel; Vilaseca, Montse; Casellas Padró, Daniel; Llanes Pitarch, Luis Miguel (2013)
Conference report
Restricted access - publisher's policy -
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 ... -
Microstructural effects on the fatigue crack nucleation in cold work tool steels
Picas Anfruns, Ingrid; Cuadrado, Núria; Casellas Padró, Daniel; Goez, Alexey; Llanes Pitarch, Luis Miguel (2010-04)
Article
Restricted access - publisher's policyCrack nucleation mechanisms in two types of cold work tool steels were evaluated under monotonic and cyclic loading conditions. The effect of the microstructural constituents: the primary alloy carbides and the tempered ... -
Modelización y simulación de la compactación de una pieza pulvimetalúrgica
Riera Colom, María Dolores; Casellas Padró, Daniel; Prado Pozuelo, José Manuel (2001)
Conference report
Open AccessEn la industria del conformado, el diseño y el control de los procesos se han basado en la experiencia y, a menudo, se ha considerado un arte. La aplicación de los métodos numéricos reduce el coste del diseño y del propio ... -
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 ... -
R-Curve approach to describe the fracture resistance of tool steels
Picas Anfruns, Ingrid; Casellas Padró, Daniel; Llanes Pitarch, Luis Miguel (2016-06)
Article
Open AccessThis work addresses the events involved in the fracture of tool steels, aiming to understand the effect of primary carbides, inclusions, and the metallic matrix on their effective fracture toughness and strength. ... -
Sheet failure prediction during forming of advanced high strength steels
Gutiérrez, D.; Hernández, R.; Riera Colom, María Dolores; Lara, Toni; Casellas Padró, Daniel; Prado Pozuelo, José Manuel (2013)
Conference report
Open AccessThe automotive industry has increased significantly the use of advanced high strength steels (AHSS) in many structural components of vehicles, with the aim to reduce weight and also increase safety. The high resistance ...