Abstract
Zinc sulphide is an important infra-red transparent “window” material. When used in forward-facing aircraft components, these windows can be damaged by the impact of rain drops. The drop impact is simulated using a high-velocity jet technique and the resulting damage is described quantitatively and qualitatively for impact velocities up to 600 m sec−1. For the 0.8 mm jets used, which simulate 4 mm diameter drop impacts, no loss of strength was observed for impacts at or below 125 m sec−1. The calculated threshold velocity for a 2 mm drop impact of 175±5 m sec−1 agrees well with results obtained on whirling-arm installations. Visual examination of the impact damage emphasized the importance of careful specimen preparation.
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Van Der Zwaag, S., Field, J.E. Liquid jet impact damage on zinc sulphide. J Mater Sci 17, 2625–2636 (1982). https://doi.org/10.1007/BF00543897
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DOI: https://doi.org/10.1007/BF00543897