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14:12 Jul-09-2014
Prediction Of Erosion Characteristics For Ablative Throat Insert Liners Using Ultrasonic Velocity Measurements

Respected sir,

Am PNV Harinth, Student. Pursuing master degree in Advanced Manufacturing System form VNR VJIET, Hyderabad.

As the part of my project work, your article was cut back my effort on knowing the erosion rate through UT (PET).. In understanding of your article, I got few of the doubts raise and mentioned below...

1. how do you finding out the predicted throat erosion based on ultrasonic velocity (Reference from Table 1 or Table 2 of your Article) ..?

2. how can we estimate theoretical erosion rate without considering ultrasonic velocity (Reference from Equation 1 or 2 of your Article) ..?

3. As prescribed from the paper, density measurement has been conducted based on Archimedes principle. Can we use the same specimen(s) for further testing i.e., estimation of erosion rate..?
If yes, phenolic laminate is a porous material.. Then specimens were wet and am expecting properties of laminate was change. Is value of erosion rate is same or it varies for a particular laminate with wet & dry specimen?
If No, composite material is heterogeneous in nature.. How can we take the density of composite material to constrain the value to get Theoretical erosion rate ( to submit density value in Eq no 2 of your article)..?

Am eagerly waiting for your replay..

Thanking you sir


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