Impact damage resistance of flat glass/cellular glass solar mirror experimental panelsAn attempt is made to characterize the hail-impact behavior of a solar concentrator structural material which consists of thin, second-surface silvered glass sheets bonded to structural support panels of cellular glass. The resulting glass/cellular glass panel can be described as a thin, brittle plate supported by an elastic foundation, with the adhesive bonding the two as a third component. The plate will bend during impact. Attention is experimentally given to how variations in the characteristics or geometry of the flat glass, adhesive and cellular glass affect hail-impact damage resistance. The critical energy needed to cause impact damage is calculated from the critical velocity of the iceball by means of the kinetic energy formula. The complexity of this structural system and the variability of the specimens render it impossible to completely develop an analytical treatment for the prediction of impact damage resistance.
Document ID
19840041718
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Varner, J. R. (Alfred University Alfred, NY, United States)
Akbar Ali, M. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)