Research on the nature of the vibration data collected from helicopter transmissions during
flight experiments has led to several crucial observations believed to be responsible for the …

Communicating failure mode information during design and manufacturing is a crucial task
for failure prevention. Most processes use Failure Modes and Effects types of analyses, as …

During the past several years, an AH‐1 Cobra aircraft at the NASA Ames Research Center
has been instrumented with tri‐axial accelerometers and a data acquisition system to …

The variations introduced during the production and maintenance of rotating machinery
components are correlated with the vibration and noise emanating from the final system …

Typical vibration monitoring systems for helicopter gearboxes rely on single-axis
accelerometer data. This paper investigates whether triaxial accelerometers can provide …

Statistical analyses of transmission vibration patterns from an AH-1 Cobra helicopter were
previously reported. Fourteen steady-state maneuvers were analyzed using multi-factor …

The US Army needs prognostic analysis of mission-critical equipment to enable condition-
based maintenance before failure. ORNL has developed and patented prognostic …

Communicating failure mode information during design and manufacturing is a crucial task
for failure prevention. Most processes use Failure Modes and Effects types of analyses, as …

When designing vehicle vibration monitoring systems for aerospace devices, it is common to
use well-established models of vibration features to determine whether failures or defects …

Manufacturing and assembly phases play a crucial role in providing products that meet the
strict functional specifications associated with rotating machinery components. The errors …