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Initial Attempt to Characterize Oxidation Damage in C/Sic Composite Using an Ultrasonic Guided Wave Method
Author(s) -
Roth Don J.,
Verrilli Michael J.,
Martin Richard E.,
Cosgriff Laura M.
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00395.x
Subject(s) - ultrasonic sensor , creep , materials science , composite number , porosity , composite material , stress (linguistics) , ultrasonic testing , acoustics , linguistics , philosophy , physics
An ultrasonic guided wave scan system was used to non‐destructively monitor damage over time and position in a C/enhanced SiC sample that was creep tested to failure at 1200°C in air at a stress of 69 MPa (10 ksi). The use of the guided wave scan system for mapping evolving oxidation profiles (via porosity gradients resulting from oxidation) along the sample length and predicting failure location was explored. The creep‐rupture tests were interrupted for ultrasonic evaluation every two hours until failure at ∼17.5 cumulative hours.