Listar por autor "Lopez-Crespo, Pablo"
Mostrando ítems 1-20 de 47
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3D numerical study of the transient behaviour on plasticity induced crack closure
Camas-Peña, Daniel
; Antunes, Fernando Ventura; López-Crespo, Pablo; González-Herrera, Antonio (2019-07-05)
The numerical analysis of the plasticity induced crack closure requires the development of the plastic wake. Transient behaviour is observed when the crack starts to grow. The plastic wake length has an influence on the ... -
A Literature Review of Incorporating Crack Tip Plasticity into Fatigue Crack Growth Models
García-González, Antonio Luis; Castro Egler, Cristina; Aguilera-García, José Antonio; Moreno Cerezo, Pablo; López-Crespo, Pablo (MDPI, 2023)
This paper presents an extensive literature review focusing on the utilisation of crack tip plastic- ity as a crucial parameter in determining and enhancing crack growth models. The review encompasses a comprehensive ... -
A numerical analysis of the plastic wake influence on plasticity induced crack closure
Camas-Peña, Daniel; Antunes, Fernando Ventura; López-Crespo, Pablo; González-Herrera, Antonio (2017-09-18)
Fatigue crack closure has been studied by means of finite element method since long time ago. Most work has been performed considering bi-dimensional models. Lately, the use of threedimensional models has been extended. ... -
Análisis numérico bidimensional del efecto de campos de tensiones no uniformes en grietas en modo mixto
Camas-Peña, Daniel; García, R.; Antunes, Fernando Ventura; Moreno, B.; López-Crespo, Pablo; Zapatero-Arenzana, José Arturo[et al.] (2022)
La probeta con taladro centrado es un tipo de geometría a partir de la cual las grietas se propagan con frecuencia. En algunos casos, el análisis combinado de carga en modo mixto I y II tiene cierta relevancia industrial. ... -
Analysis of fatigue strain fields with synchrotron x-ray diffraction and 3d numerical computation.
Aguilera-García, José Antonio; Kelleher, Joseph F.; López-Crespo, Pablo; García-González, Antonio Luis; Moreno Cerezo, Pablo (2023)
When designing lightweight materials, engineers prioritise resource preservation but often encounter issues with fatigue. Various experimental methods exist to study fatigue cracks; nevertheless, transmission photo-elasticity ... -
Caracterización de grietas de fatiga mediante difracción de rayos X sincrotrón
(UMA Editorial, 2019)En este trabajo se presentan 2 metodologías para estimar el Factor de Intensidad de Tensiones (SIF) usando datos de difracción de rayos X sincrotrón del interior de materiales opacos. Primero, se presenta una estrategia ... -
Characterisation of 18Ni 300 steel CT specimens in a fatigue test manufactured by selective laser melting at 0°, 45° and 90°
Moreno Cerezo, Pablo; Sánchez-Cruces, Manuel Alejandro; Moore, Steven; Wheatley, Greg; López-Crespo, Pablo (Elsevier, 2024)
Maraging steel, 18Ni300, is a high-performance material that shows promising potential for various industrial applications. Selective Laser Melting is utilized in the manufacturing of high-value components. Understanding ... -
Characterisation of the crack tip plastic zone in fatigue via synchrotron X-ray diffraction
Carrera, Manuel; Sánchez-Cruces, Manuel Alejandro; Kelleher, Joseph F.; Tai, Yee-Han; Yates, John R.; Withers, Philip J.; López-Crespo, Pablo[et al.] (Wiley, 2022-04-23)
This paper describes a new methodology for characterising the plastic zoneahead of a fatigue crack. This methodology is applied to a set of experimentaldata obtained by synchrotron X-ray diffraction on a bainitic steel ... -
Comportamiento cíclico de una acero St-52-3N: Influencia de los módulos de elasticidad en las estimaciones de vida a fatiga
López-Prieto, Manuel; Moreno-Morales, María Belén; Zapatero-Arenzana, José Arturo; López-Crespo, Pablo (Grupo Español de Fractura, 2016)
Dada la dependencia de los módulos de elasticidad en los métodos de estimación de vida a fatiga, se analiza el comportamiento cíclico y la variación de estos con el grado de deformación. En este estudio se llevan a cabo ... -
Critical plane based method for multiaxial fatigue analysis of 316 stainless steel
Sánchez-Cruces, Manuel Alejandro; García-González, Antonio Luis; Moreno-Morales, María Belén; Itoh, Takamoto; López-Crespo, Pablo (Elsevier, 2022-04)
In this work, the fatigue behaviour of 316 stainless steel is studied with different critical plane models. Seven cylindrical samples were used for the study, being subjected to different complex loading paths, generating ... -
Critical plane based method for multiaxial fatigue analysis of 316 stainless steel
Sánchez-Cruces, Manuel Alejandro; García-González, Antonio Luis; Moreno-Morales, María Belén; Itoh, Takamoto; López-Crespo, Pablo (Elsevier, 2022-01-31)
In this work, the fatigue behaviour of 316 stainless steel is studied with different critical plane models. Seven cylindrical samples were used for the study, being subjected to different complex loading paths, generating ... -
Determinación experimental de la carga de apertura de grieta en fatiga bajo cargas aleatorias
Cruces, A.S.; Camas-Peña, Daniel; López-Crespo, Pablo; Zapatero-Arenzana, José Arturo; Moreno-Morales, María Belén (2019-05-02)
El concepto de carga de apertura o cierre de grieta es ampliamente utilizado en fatiga para justificar el comportamiento del crecimiento de grietas con distintas relaciones de carga y el efecto de interacción de las cargas. ... -
Energy-based critical plane fatigue methods applied to additively manufactured 18Ni300 steel
Cruces, A.S.; Branco, Ricardo; Borrego, L.P.; López-Crespo, Pablo (Elsevier, 2023)
In this work, the uniaxial and biaxial fatigue behaviour of maraging steel (18Ni300) obtained by additive manufacturing was studied. The material was evaluated using several biaxial load paths and different load levels. ... -
Energy-based critical plane fatigue methods applied to additively manufactured 18Ni300 steel
Sánchez-Cruces, Manuel Alejandro; Branco, Ricardo; Borrego, L.P.; López-Crespo, Pablo (Elsevier, 2023-01-30)
En este trabajo, se estudió el comportamiento a fatiga uniaxial y biaxial del acero maraging (18Ni300) obtenido mediante fabricación aditiva. El material fue evaluado utilizando varios trayectos de carga biaxial y diferentes ... -
Estimación de la zona plástica en torno a grietas de fatiga vía microindentación.
(UMA Editorial, 2023)El conocimiento preciso de la zona plástica en las grietas de fatiga es una forma muy directa y eficaz de cuantificar el daño en componentes que están sometidos a cargas cíclicas tales como los usados en la industria de ... -
Estudios de propagación de grietas mediante correlación de imágenes y mecánica de la fractura
(UMA Editorial, 2019)Accurate evaluation of the fracture parameters is crucial for estimating the behaviour of the mechanical components in service condition. Experimental observations are extremely useful to provide accurate and reliable ... -
Evaluación de la zona plástica en fatiga para un acero bainitico mediante difracción de rayos x
Carrera, Manuel; López-Crespo, Pablo; Camas-Peña, Daniel; Zapatero-Arenzana, José Arturo; Moreno-Morales, María Belén (2019-05-02)
En este artículo se presenta una nueva metodología para medir la zona plástica de una grieta en fatiga. Se han adquirido datos de difracción de rayos X sincrotrón para una probeta Compact Tension de acero bainítico, en ... -
Experimental and analytical study of cracks under biaxial fatigue
Mokhtarishirazabad, Mehdi; López-Crespo, Pablo; Moreno-Morales, María Belén; Camas-Peña, Daniel; López-Moreno, A.; Zanganeh, M[et al.] (GIF, 2016)
Most mechanical components experience multi-axial cyclic loading conditions during service. Experimental analysis of fatigue cracks under such conditions is not easy and most works tend to focus more on the simpler but ... -
Experimental evaluation of Stress Intensity Factors from strain fields using Digital Image Correlation
López-Crespo, Pablo; García-González, Antonio Luis (2014-11-10)
Optical techniques offer many benefits to experimentalist compared with gauge methods. Optical techniques such as holographic interferometry, electronic speckle pattern interferometry, photo- and thermoelasticity, and ... -
Fatigue crack characterisation in 2024-T351 aluminium alloy through SEM observation combined with the CJP model
Robles, J.M.; Vasco-Olmo, J.M.; Cruces, A.S.; Díaz, Francisco A.; James, Neil; López-Crespo, Pablo[et al.] (Elsevier, 2023-01)
This work characterises crack growth in AA2024-T315 by combining different methods to further increase the reliability of the results. The Christopher-James-Patterson (CJP) model was fitted to experimental data obtained ...