<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>doc1.txt
<DESCRIPTION>POWER OF ATTORNEY (PUBLIC): POWER OF ATTORNEY
<TEXT>
POWER OF ATTORNEY

The undersigned, being a person required to file reports pursuant to
Section 16 of the Securities Exchange Act of 1934 ("Section 16")
regarding the undersigned's beneficial ownership of equity securities in
Mistras Group, Inc. (the "Company"), hereby constitute and appoint each
of Michael Keefe, Edward Prajzner and Michael Kozole, signing
singly,as my true and lawful attorney-in-fact to:

(1)	prepare, execute in my name and on my behalf, and submit to the
U.S. Securities and Exchange Commission (the "SEC") a Form ID, including
amendments thereto, and any other documents necessary or appropriate to
obtain codes and passwords enabling me to make electronic filings with
the SEC of reports required by Sections 13 or 16 or any rule or regulation
of the SEC;

(2)	(2)	execute for and on my behalf, as a Section 16 reporting
person of the Company, Forms 3, 4, and 5 in accordance with Section 16
and the rules thereunder, Schedule 13G or 13D in accordance with
Section 13 and the rules thereunder, and any other forms or reports I
may be required to file in connection with my ownership, acquisition,
or disposition of securities of the Company; ;

(3)	(3)	do and perform any and all acts for and on my behalf
which may be necessary or desirable to complete and execute any such
Form 3, 4, or 5, Schedule 13G or 13D, or other form or report in
connection with my ownership, acquisition, or disposition of securities
of the Company, and file such form or report with the SEC and any stock
exchange or similar authority; and

(4)	take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney-in-fact, may be to my
benefit, in my interest, or legally required by me, it being understood
that the documents executed by such attorney-in-fact on my behalf pursuant
to this Power of Attorney shall be in such form and shall contain such
terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

	I hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
I might or could do if personally present, with full power
of substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this Power of Attorney
and the rights and powers herein granted. I acknowledge that the foregoing
attorneys-in-fact, in serving in such capacity at my request, are not
assuming, nor is the Company assuming, any of my responsibilities to comply
with Sections 13 or 16.

	This Power of Attorney shall remain in full force and effect until
I am no longer required to file Forms 3, 4, and 5 or Schedules 13G or 13D
with respect to my holdings of and transactions in securities of the
Company, unless earlier revoked by me.  By executing this Power of Attorney,
I revoke all powers of attorney previously executed by me regarding the
powers and authority granted in this Power of Attorney.

Dated:  July 31, 2025


						 /s/ Aspasia Vahaviolos
						   Aspasia Vahaviolos


</TEXT>
</DOCUMENT>
