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Technical Discussions
Arulprakasam
,
India, Joined Nov 2017, 2

Arulprakasam

,
India,
Joined Nov 2017
2
07:45 Jun-26-2018
Question: Rotor composite blade web bonding thickness measurement

We are doing UT inspection of Rotor composite Blade web bonding . Here two type material is there, one is Epoxy laminate & Epoxy adhesive, when we do scan from Epoxy laminate to Epoxy adhesive, how to get the exact thickness of Adhesive (both materials have different velocity)

 
 Reply 
 
J.B.
J.B.
15:38 Jun-26-2018
Re: Question: Rotor composite blade web bonding thickness measurement
In Reply to Arulprakasam at 07:45 Jun-26-2018 (Opening).

Do you have anywhere access a hole or a sidewall, where you can visually determine the adhesive layer thickness?

Check at that point the echo sequence.
First echo should allow you to determine the laminate sound velocity.

2nd echo could indicate the laminate + adhesive layer. (if the bondlayer is thinner than the laminate) - you get than - by subtraction - the sound velocity of the bond layer. The rest is simple.... Just observe 1st and 2nd echo....



 
 Reply 
 
Phil Harper
Director, Tribosonics
Tribosonics Ltd, United Kingdom, Joined Feb 2004, 10

Phil Harper

Director, Tribosonics
Tribosonics Ltd,
United Kingdom,
Joined Feb 2004
10
09:16 Jul-02-2018
Re: Question: Rotor composite blade web bonding thickness measurement
In Reply to Arulprakasam at 07:45 Jun-26-2018 (Opening).

Hi Arulprakasam,

It is possible to measure the thickness of very thin bonding layers, including many times thinner than the wavelength by measuring from one side only. Tribosonics Ltd offer capability in this area - see www.tribosonics.com.

Phil

 
 Reply 
 
Simon Amallraja
Simon Amallraja
08:21 Jul-12-2018
Re: Question: Rotor composite blade web bonding thickness measurement
In Reply to Arulprakasam at 07:45 Jun-26-2018 (Opening).

You can use high power and high energy UT System to evaluate these kind of applications. We can support you on this. Mail me your reqt and details.

Our UT Systems are widely used for CFRP and GFRP Components in India.

D. Simon Amallraja

 
 Reply 
 

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