Experimental and Numerical Analysis of Hygrothermal Effect on Applied Nano-Composite Material Under Bending Load


Dhia A. Alazawi, Ali Jamal Khalid, Nayyef ahmed Talib


Mechanical Engineering Department, Engineering collage, Diyala University- Diyala –Iraq

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The hygrothermal effect has been investigated in the present work by subjecting specimens to bending load under the effect of a circumstances (50℃) heat and (50%) moisture. In the present work, two types (random and mat) fiber glass polymer composite material have used. A nano material (Al2O3) of 2% weight fraction has been added to the composite material or otherwise leads to tangible effect in the flexural strength. This work revealed that, when the heat exposure time increases the load necessary to fail will decrease accordingly. This has been explained due to the fact that, the effect of temperature can lead to increase the deflection. The results showed that, when the heat exposure time is 1 h a deflection of 63 % can be obtained wherein the value of deflection can reach 96% when the exposure time is 2 h as the temperature remains constant of 50 ℃. Humidity didn’t observe to be as a significant factor that affect the value of deflection for the composite beam. Increasing the humidity exposure time from 1 hour to 2 hours leads to decrease the deflection by only 3%. This has been achieved because the moisture has led to relatively cool the environment and hence the deflection will decrease.