Structural fatigue testing plays a vital role in assuring the long term integrity of aerospace vehicles and components. However, substantial uncertainty involving large-scale complex structural tests does exist due to their inherent one shot nature. Crack propagation not revealed by a catastrophic failure during a single test can cause structural problems later in production aircraft. The overall objective of this program was to develop a reliable nondestructive testing system for the detection of initiating cracks generated during structural fatigue testing. The goals were to (1) detect cracks as small as 0.050 in. in complex structures and (2) develop a detection system that could be operated by technician-level personnel typically assigned to structural test areas.
Automated Early Fatigue Damage Sensing System
1988
93 pages
Report
No indication
English
Manned Spacecraft , Structural Analyses , Acoustic Detection , Aerospace craft , Crack propagation , Fatigue(Mechanics) , Nondestructive testing , Titanium alloys , Acoustic emissions , Aluminum alloys , Cracks , Damage , Detection , Detectors , Failure , Structural engineering , Structural properties , Structures , Test and evaluation , Test methods , Ultrasonics , Metals
Early Detection of Fatigue Damage in Composite Materials
AIAA | 1976
|Early detection of fatigue damage in composite materials
AIAA | 1975
|Cumulative Fatigue Damage Assessment
NTIS | 1964
Effect of Early Opening to Traffic on Fatigue Damage to Concrete Pavement
Transportation Research Record | 2016
|