Project Title:
Providing Structural Modules with Self-Integrity Monitoring
04.09-5050
Providing Structural Modules with Self-Integrity Monitoring
Anco Engineers Inc.
9937 Jefferson Blvd
Culver City
CA
90232-3591
Ibanez
Paul
NAS7-961
Amount:439,000
JPL
NAS7-937
Abstract:
An important aspect of having complex space structures, and any relatedoperations, function successfully is to be able to rapidly and remotely detect structural
damage. The Phase I research involved developing five approaches that can be used
for structural damage detection. They are all dependent on defining a substructure
transfer function matrix. The space structure would be divided into substructures.
The substructure being analyzed would be excited by an external load source and
changes in the transfer function matrix would be detected. Some of the "tools" used
for the detection are (1) Taylor series expansion of the transfer function (TF),
(2) phase shift of the TF, (3) modal strain energy distribution, and (4) nonlinear
parameter estimation. First cut validations of all the approaches are presented
in the final report. Overall, the results are good.
The Phase II work will involve an extension of the Phase I work, with there being
certain areas of concentration because of the
greater possibility of substantial success in those areas. The deliverables will
consist of benchmarked, final algorithms/ approaches to damage detection, together
with all the material used for validation. Also, all software needed for basic damage
detection will be provided.