Establishing an Acceptance Criteria for Assessing Fatigue of Additive Repair Processes

Autor:	Joseph A. Beck, Luke Sheridan, Onome Scott-Emuakpor, Brian Runyon, Tommy George
Rok vydání:	2021
Předmět:	Stress (mechanics) Gas turbines Materials science Repair processes Fuel Technology Nuclear Energy and Engineering Acceptance testing Mechanical Engineering Energy Engineering and Power Technology Aerospace Engineering Fractography Reliability engineering
Zdroj:	Journal of Engineering for Gas Turbines and Power.
ISSN:	1528-8919 0742-4795
Popis:	Criteria for assessing high cycle fatigue (HCF) capability is important for transitioning additive repair technologies to turbine engine applications. By studying the fatigue results of two laser directed energy deposition additive manufacturing repairs on airfoil representative Titanium 6Al-4V coupons, acceptable HCF results for repairs can be determined by observing the confidence in predicted values and the reliability of the empirical data compared to baseline results. The following document details the steps and philosophies behind fabricating coupons that capture the repair capability. Furthermore, regression analysis as well as investigations of dataset distribution, fractography, and microscopy are necessary for instilling confidence in the understanding of repair fatigue behavior. The findings in this work provide a decision gate with quantifiable metrics for advancing novel repair techniques.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ea7411555ed45ed568a75b342fa8cc6 https://doi.org/10.1115/1.4052061 Zobrazit plný text záznamu