The project is organized into 3 technical work packages (WP1~3), a training and transfer of knowledge WP4 and a management/dissemination WP5.
WP1--Development of methodologies for high-fidelity As-Measured Modelling and reduction techniques specifically for blisks undergoing blend repairs, by employing the state-of-the-art 3D optical geometry scanning technology.
WP2--Development of methodologies for forced response analysis of blended blisks based on the As-Measured Model, along with experimental verification in the top-level stationary/spinning test facilities specifically developed for blade disk structures within AERMEC group.
WP3--Development of methodologies for predictive evaluation of the impact of blend geometry variance and number on the structural dynamics of the damaged blisk to be repaired.
WP4-- The training-through-research/transfer of knowledge activities include: 1) Training on Time-Frequency Analysis technique. 2) Training on the stationary traveling wave excitation system for the bench test in WP2. 3) Training on blade tip-timing technique for vibration measurement of spinning blisks in WP2. 4) Effective transfer of knowledge from the fellow in the form of regular research meetings, seminars, scientific publications and tutoring activities: a) the state-of-the-art as-measured blisk modelling technique based on advanced optical scanning technology; b) the classical blade mistuning identification methods relying on blisk modal tests and various reduced-order model techniques; (c) the novel blade mistuning identification method based on blade detuning tests; d) the original blisk model reduction technique “SMART” for geometrically mistuned blisk models. 5) Training on transferable skills for career needs by deeply involved in managing/coordinating the research work/financial part of the project, dealing with unexpected events, interacting with the AERMEC group and its international networks, co-supervising a MSc student’s thesis, etc.
WP5—Activities for effective dissemination and communication of the project results: 1) 4 high-quality peer-reviewed journal papers have been published and deposited in Zenodo with Green open access; 3 manuscripts are forthcoming for journal publication. 2) an oral presentation in the well-established international conference ASME Turbo Expo 2022, an invited seminar presentation in Dec, 2022 by the International Committee on Joint Mechanics and an oral presentation at a specialized symposium (Nov, 2021) have been delivered. 3) A data management plan has been delivered in the 6th month and open access to the research data, e.g. the finite element models, is provided under request. 4) News related to the project are provided in Twitter of POLITO and the online magazine PoliFlash; a web page dedicated to the successful story regarding the BRAVO project was published; a short video “MSCA Answers” was posted on Instagram POLITO. 5) The fellow has participated in the outreach events-- the European Researchers’ Night (Oct, 2022) and Biennale della Tecnologia (Nov, 2022) in order to increase the general public’s awareness of the project BRAVO.
