A5010910520- Fatigue and fracture mechanics
- Hydrogen embrittlement and corrosion behaviors in metals
- High Temperature Alloys and Creep
- Non-Destructive Testing Techniques
- Concrete Corrosion and Durability
- High-Velocity Impact and Material Behavior
- Nuclear Materials and Properties
- Corrosion Behavior and Inhibition
- Metallurgy and Material Forming
- Mechanical stress and fatigue analysis
- Material Properties and Failure Mechanisms
- Structural Load-Bearing Analysis
- Microstructure and Mechanical Properties of Steels
- Fire effects on concrete materials
- Mechanical Failure Analysis and Simulation
- Dental Implant Techniques and Outcomes
- Probabilistic and Robust Engineering Design
- Metal and Thin Film Mechanics
- Structural Integrity and Reliability Analysis
- Aluminum Alloys Composites Properties
- Advanced Measurement and Metrology Techniques
- Engineering Structural Analysis Methods
- Aluminum Alloy Microstructure Properties
- Structural Engineering and Materials Analysis
- Advanced machining processes and optimization
Universidad de Cantabria
2013-2023
Instituto Tecnológico del Calzado y Conexas
2009-2020
Instituto de Física de Cantabria
2019
ABSTRACT The objective of the final small punch test (SPT) is to determine fracture properties materials, such as toughness, when not enough material available for conduct conventional tests. damage model developed by Gurson, and subsequently modified Tvergaard Needleman (GTN), allows numerical simulation elastic‐plastic behaviour until fracture. This based on several constitutive parameters that must be calibrated if properly applied. In this paper, we develop a consistent methodology...
In the 1980s, studying effect of neutron irradiation and temper embrittlement on structural materials for fusion fission programmes was a major challenge. this context development small specimen test techniques began, allowing characterization nuclear applications with amounts material. The punch technique is one these approaches. It widely used monitoring materials, however there currently no comprehensive international standard testing. An EN testing being developed under auspices...
Life extension of aging nuclear power plant components requires knowledge the properties service-exposed materials. For instance, in long term service tensile and creep might decline ductile-to-brittle transition temperature (DBTT) shift towards higher temperatures. Monitoring structural plants receives much attention — particular context lifetime current plants, where amount material available for destructive testing is limited. Much effort has therefore been invested development miniature...
This paper analyses the failure of three bolts used in structural connections a number steel towers located northern Europe. The analysis comprises optical and scanning electron microscopy, microstructural hardness analysis, mechanical testing integrity assessments. present very similar processes, with circumferential external crack that led to final failure. morphology propagation is typical Hydrogen-Induced Stress Corrosion Cracking (HISCC), mixed intergranular-transgranular...
ABSTRACT In recent years, great advances have been made in non‐destructive or quasi‐non‐destructive test techniques for the determination of fracture toughness. One most interesting these is one known as Small Punch, which a punch acts on small plane specimen, deforming it until fracture. From continuous records force and displacement taken during test, possible to quantify energy absorbed then determine classic parameters mechanics such ductile‐to‐brittle transition temperature even...
Determination of the Paris' law constants requires continuous measure crack length. This has usually been performed using methods based on electric potential differences or by means correlations between length and compliance specimen. Bearing in mind that tip undergoes a temperature rise due to corresponding stress concentration generation growth plastic zone, it is possible, infrared thermographic techniques, quantify growth. Thus, this paper, fatigue propagation behaviour polyamide...
This work provides an overview of the FRACTESUS project (Euratom programme 2019-2020). The European Union has defined clear short and long-term objectives to achieve its energy transition towards sustainable a climate neutral economy by 2050. success this relies on combination efficiency low carbon in all sectors economy. In electricity mix scenarios up 2050, one needs rely existing nuclear power plants, operation, new build future systems. safety operability systems heavily strategies where...
In recent years an increasing interest has been shown in materials characterisation techniques based on the use of reduced dimension samples. One these techniques, first developed early 80’s, is Small Punch testing, which a punch acts over plane small specimen deforming it until fracture. So far, this test used as tool for estimation mechanical properties, characterising ductilebrittle transition or knowing evolution properties with ageing phenomena neutron irradiation. The Test even...
In this article, different techniques to test notched small punch samples in fracture conditions aggressive environments are studied, based on the comparison of micromechanisms at rates. Pre-embrittled subsequently tested air rates conventionally employed (0.01 and 0.002 mm/s) compared embrittled ones environment same a very slow rate (5E–5 mm/s). A set under constant loads that produce completes experimental results. As conclusion, it is recommended specimens rates, around E–6 mm/s, when...
Abstract: Gold has been one of the most valuable materials since ancient times. These days it is mainly used as a business commodity or an engineering material in jewellery, medical prostheses (mainly dental) electronics. For these purposes, knowledge its mechanical properties key factor order to improve design and performance. The pure gold have already reported, although information on them scarce indeed no such fracture resistance found by authors this work. alloys, especially those for...
This paper clarifies the causes of a corrosion process observed in austenitic stainless-steel pipes, grade 316L, used for conducting freshwater port area. During pressure test installation, before it was put into service, about five months after its construction, loss detected due to leaks fluid contained and presence damage on wall tubes, some cases even passing through thickness tube. An analysis chemical composition pipe material carried out, as well semi-quantitative deposits defects,...