SYMPOSIA PAPER Published: 01 January 1982
STP28864S

Application of an Improved Crack Growth Prediction Methodology on Structure Preliminary Design

Source

An improved crack growth methodology which accounts for load interaction effects was implemented into a computer module, PREGRO, and was subsequently incorporated into an existing preliminary design analysis computer program, APAS. The procedure utilizes the equivalent damage concept, which converts the random spectrum into equivalent constant-amplitude load cycles. By using this improved crack growth prediction module, unnecessary weight penalties can be avoided in the preliminary design of primary structures. Examples are given for the application of this predictive method to wing structures for typical fighter and transport aircraft.

Author Information

Chang, JB
Rockwell International, Los Angeles, Calif.
Engle, RM
Air Force Wright Aeronautical Laboratory, Wright-Patterson Air Force Base, Ohio
Hiyama, RM
Rockwell International, Los Angeles, Calif.
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Details
Developed by Committee: E08
Pages: 278–295
DOI: 10.1520/STP28864S
ISBN-EB: 978-0-8031-4826-0
ISBN-13: 978-0-8031-0714-4