Non-Destructive Inspection (NDI) for recrystallized grains in single crystal superalloys

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$80,000.00
Award Year:
2014
Program:
SBIR
Phase:
Phase I
Contract:
N68335-14-C-0020
Award Id:
n/a
Agency Tracking Number:
N132-097-0781
Solicitation Year:
2013
Solicitation Topic Code:
N132-097
Solicitation Number:
2013.2
Small Business Information
9063 Bee Caves Road, Austin, TX, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
625120902
Principal Investigator:
Mark Warchol
Principal Investigator
(512) 263-2101
mwarchol@tri-austin.com
Business Contact:
Monte Fellingham
Contracts Administrator
(512) 263-2101
mfellingham@tri-austin.com
Research Institution:
n/a
Abstract
Recently, the F-35 program experienced fatigue cracking in a low pressure turbine blade inside the F135 engine from recrystallization (RX). These problems cost the program time and money, strain the political capital necessary to sustain a large weapons program, and undermine the confidence of domestic and international partners. In response, TRI/Austin proposes utilizing an ultrasonic acoustic birefringence NDI technique to ensure turbine blade quality control. Instances of RX will be identified in single crystal superalloys through the changes in density as interpreted by transducers as the ultrasonic waves are sent through the part. To validate this approach, TRI/Austin will team with the Advanced Manufacturing Center (AMC) at the University of Texas at Austin. AMC will fabricate a set of NDI specimens with controlled incidents of RX introduced via deforming the specimens to introduce plastic strain before relieving in a vacuum furnace. The goal of these activities is a design for an inspection system at Pratt & Whitney to provide immediate go/no-go for the turbine blades as they are received from the casting house in Phase II, validated by testing against a set of specimens with controlled RX.

* information listed above is at the time of submission.

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