Deformation analysis of a communication telescope structure under nonuniform heating using holographic interferometry

Details Deformation analysis of a communication telescope structure under nonuniform heating using holographic interferometry Deformation analysis of a communication telescope structure under nonuniform heating using holographic interferometry

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3293..102j&link_type=abstract

Proc. SPIE Vol. 3293, p. 102-113, Practical Holography XII, Stephen A. Benton; Ed.

Computer Science

Scientific paper

The mechanical behavior of satellite telescope structures, subjected to non-uniform heating, as this occurs in orbit, is examined. In the laboratory, temperature gradients are created either by resistors or by IR lamps. Telescope structures are made of a material of very low thermal expansion coefficient--INVAR or carbon-carbon composite--in order to cope with stringent long term stability requirements in relation to temperature variation. Real time holographic interferometry is used to disclose the micro- deformation of the telescope. A careful implementation of the method is necessary, since, within the fixed temperature range for this study, very small deformations are expected. Monitoring of the heating conditions is achieved by an IR camera and thermocouples. Maps of temperature and of the corresponding interferometric out-of-plane deformation are obtained in parallel. The dynamic phase shifting technique allows to produce time-sequences of such deformation maps. These movies, and the temperature/deformation maps, highlight the structure deformation in a quantitative and dynamic way and suitably determine whether the structures meet their specifications.

Affiliated with

Also associated with

No associations

Rating

Deformation analysis of a communication telescope structure under nonuniform heating using holographic interferometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Deformation analysis of a communication telescope structure under nonuniform heating using holographic interferometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deformation analysis of a communication telescope structure under nonuniform heating using holographic interferometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-933613