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super_mech新虫 (初入文坛)
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意大利米兰理工大学Lorenza Petrini教授招收2名玛丽居里MEDALLOY博士
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博士职位1: Experimental and numerical investigation of defect crack propagation in Nitinol 课题内容: The research aims to understand how inclusions and surface defects affect the fatigue life of Nitinol used in medical devices. Accordingly, the DC will investigate whether flaws such as inclusions or surface imperfections act as critical crack nucleation sites or can be considered benign under cyclic loading. Experimental work will include quantifying inclusion size and morphology and assessing the influence of surface features such as oxides, wire marks, and indents on stress concentrations. These data will inform computational and analytical models of stress distribution, crack initiation, and propagation. The project will develop a damage-tolerant design framework that relates fatigue life to a quantitative fatigue index parameter, enabling prediction of long-term material performance. The DC will collaborate with industrial and academic partners on specimen fabrication, fatigue testing, and computational modelling. The expected outcome is a validated approach to predict defect tolerance in Nitinol components, supporting safer and more reliable biomedical device designs. 博士职位2: Numerical and experimental fatigue assessment of Nitinol cardiovascular devices 课题内容: The research focuses on developing and validating a fatigue prediction framework for Nitinol cardiovascular devices. The DC will design, manufacture, and test surrogate fatigue samples and semi-finished devices, analysing how inclusions, surface defects, and microstructural characteristics influence crack initiation and propagation. Experimental work will involve cyclic mechanical testing and fracture surface analysis, with results used to calibrate and validate computational models. Finite element analysis will be applied to compute local and surface strain distributions, and to develop criteria for fatigue life prediction in monotonic and cyclic loading scenarios. The project aims to establish a standardised fatigue life estimation protocol, including surrogate testing and in-silico evaluation, to support device performance validation. Collaboration with industrial partners will provide access to manufacturing, testing, and fracture analysis capabilities. The expected outcome is a robust fatigue assessment framework that enhances reliability and supports design optimisation for Nitinol-based cardiovascular devices. 申请开始时间：2026年1月15日；博士开始时间：2026年秋季。 简历投递请通过玛丽居里项目网站: medalloy.eu 联系人: Lorenza Petrini 教授，如果有任何疑问，请发邮件至lorenza.petrini@polimi.it |
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