Measured Interfacial Residual Strains Produced by In-Flight Ice

Andrew Work, Jonathan Salem, Eric Baker, Ernestina Schirmer, Rebekah Douglass, Richard Kreeger

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations

Abstract

The formation of ice on aircraft is a highly dynamic process during which ice will expand and contract upon freezing and undergoing changes in temperature. Finite element analysis (FEA) simulations were performed investigating the stress/strain response of an idealized ice sample bonded to an acrylic substrate subjected to a uniform temperature change. The FEA predictions were used to guide the placement of strain gages on custom-built acrylic and aluminum specimens. Tee rosettes were placed in two configurations adjacent to thermocouple sensors. The specimens were then placed in icing conditions such that ice was grown on top of the specimen. It was hypothesized that the ice would expand on freezing and contract as the temperature of the interface returned to the equilibrium conditions. While results from the aluminum specimens matched this hypothesis, results from the acrylic specimens show a short period of contraction followed by a much larger expansion at the interface, indicating more complex ice growth thermodynamics than anticipated. Some samples were observed to delaminate, suggesting that the residual strain is significant to the shedding of ice for in-flight applications.

Original languageEnglish (US)
JournalSAE Technical Papers
Volume2019-June
Issue numberJune
DOIs
StatePublished - Jun 10 2019
Event2019 SAE International Conference on Icing of Aircraft, Engines, and Structures, ICE 2019 - Minneapolis, United States
Duration: Jun 17 2019Jun 21 2019

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'Measured Interfacial Residual Strains Produced by In-Flight Ice'. Together they form a unique fingerprint.

Cite this