Open AccessNDE Methodologies for Composite Flywheels Certification
Author(s) -
George Y. Baaklini,
Kevin E. Konno,
Richard E. Martin,
Richard C. Thompson
Publication year - 2000
Publication title -
sae technical papers on cd-rom/sae technical paper series
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.295
H-Index - 107
eISSN - 1083-4958
pISSN - 0148-7191
DOI - 10.4271/2000-01-3655
Subject(s) - certification , nondestructive testing , quality assurance , flywheel , delamination (geology) , composite number , rotor (electric) , materials science , structural engineering , engineering , mechanical engineering , composite material , geology , medicine , radiology , law , paleontology , operations management , tectonics , external quality assessment , subduction , political science
Manufacturing readiness of composite rotors and certification of flywheels depend in part on the maturity of nondestructive evaluation (NDE) technology for process optimization and quality assurance, respectively. Capabilities and limitations of x-ray-computed tomography and radiography, as well as advanced ultrasonics were established on NDE ring and rotor standards with EDM notches and drilled holes. Also, intentionally seeded delamination, tow break, and insert of bagging material were introduced in hydroburst-rings to study the NDE detection capabilities of such anomalies and their effect on the damage tolerance and safe life margins of subscale rings and rotors. Examples of possible occurring flaws or anomalies in composite rings as detected by NDE and validated by destructive metallography are shown. The general NDE approach to ensure quality of composite rotors and to help in the certification of flywheels is briefly outlined.
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