The Adhesion Strength of Impact Ice Measured Using a Modified Lap Joint Test

Work, Andrew H, Jr ; Gyekenyesi, Andrew L ; Kreeger, Richard E ; Salem, Jonathan A ; Vargas, Mario M ; Drabiak, Daniel R

关键词: ADHESION;    AIRCRAFT ICING;    AIRCRAFT SAFETY;    ICE FORMATION;    LAP JOINTS;    RESIDUAL STRESS;    STRESS-STRAIN RELATIONSHIPS;    THERMAL STRESSES;    WIND TUNNEL MODELS;    ATMOSPHERIC TEMPERATURE;    DEICING;    DROPS (LIQUIDS);    PLASTIC PROPERTIES;    STAINLESS STEELS;    TEMPERATURE EFFECTS;    TIME DEPENDENCE;   

RP-ID  :  GRC-E-DAA-TN55601

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Numerous methodologies have been utilized to measure the adhesion strength of impact ice, and the data reported in the literature varies significantly from test to test. In order to initiate an investigation to determine the cause of this disparity, a new test methodology has been developed and utilized in the Icing Research Tunnel at the NASA Glenn Research Center. Data was obtained while varying the temperature, test section velocity, and cloud droplet mean volumetric diameter. The first data set acquired using this new test method is presented. New trends demonstrate the effect of annealing ice samples, with temperature being a key variable. Observations during the test and analysis of the results suggest the presence of large residual stresses in the samples.