Low Plasticity Burnishing (LPB) document released detailing improvements to engine vane used in AV-8B Harrier II

Released on = June 6, 2007, 7:08 am

Press Release Author = Brian C. Murphy, Lambda Technologies

Industry = Aerospace

Press Release Summary = Cincinnati, Ohio - June 6, 2007, - Lambda Technologies has
released a Low Plasticity Burnishing (LPB) Application Note detailing their
successful program to improve foreign object damage (FOD) tolerance and high cycle
fatigue endurance limits while completely mitigating cracking along the trailing
edge of the Ti-6A1-4V Alloy F402 First Stage Low Pressure Compressor (LPC1) Vane
used in the AV-8B Harrier II.

Press Release Body = FOR IMMEDIATE RELEASE

Low Plasticity Burnishing (LPB) document released detailing improvements to engine
vane used in AV-8B Harrier II.

Application Note illustrates surface enhancement program to reduce the total cost of
ownership and operation of the F402-RR-408 turbofan engine.

Cincinnati, Ohio - June 6, 2007, - Lambda Technologies has released a Low Plasticity
Burnishing (LPB) Application Note detailing their successful program to improve
foreign object damage (FOD) tolerance and high cycle fatigue endurance limits while
completely mitigating cracking along the trailing edge of the Ti-6A1-4V Alloy F402
First Stage Low Pressure Compressor (LPC1) Vane used in the AV-8B Harrier II.

Providing close, offensive air support for U.S. Marine Corps maneuvers, the
"Harrier" is powered by the Rolls-Royce Pegasus F402-RR-408 turbofan engine, the
world's only operational V/STOL (Vertical/Short Take-Off and Landing) engine. The
F402 Engine's First Stage vanes are subject to both high stresses and FOD generated
by airborne debris during takeoff. Inspection and maintenance costs adversely
impact flight readiness and significantly increase the total cost of ownership and
operation of the F402 engine.

Conventional surface treatments, such as shot peening, offer only limited benefit
while LPB processed vanes have demonstrated improved FOD tolerance, increased HCF
endurance limits, and complete mitigation of fatigue cracking by imparting
through-thickness residual compression along the vane's trailing edge.

LPB is a proven surface treatment that develops a deep layer of high magnitude
compressive residual stress (RS) to mitigate fretting fatigue, corrosion fatigue, or
fatigue from foreign object damage (FOD) in the fatigue prone areas of expensive and
critical aircraft components such as landing gear, propeller hubs, and turbine
engine blades.

Application of LPB delivers significant fatigue life extension with minimal initial
capital investment and low, "on-site" production costs. A turn-key system
consisting of the hydraulic control system, tooling, and proven computer numerical
control (CNC) code files is delivered to the client for integration into their
manufacturing operations. The entire LPB process provides unique, real-time quality
control monitoring that is recorded and uploaded to a secure web server for
Statistical Process Control (SPC) analysis by the client's QA system and by Lambda
Technologies technicians.

To discover how implementing LPB into your process will improve component
performance, or to download the entire F402 LPC1 Vane LPB Application Note
(http://www.lambdatechs.com/html/documents/LPB_Application_Note_F402_LPC1_Vane_lowres.pdf)
or any of Lambda's LPB Application Notes, visit www.lambdatechs.com and navigate to
the "Discover LPB" web page.

Lambda Technologies is an innovative company incorporating a premier materials
research laboratory with a world-class engineering and production enterprise
dedicated to the development and optimization of surface treatments to improve
component performance. For additional information on Lambda Technologies or
licensing the LPB process, contact Brian C. Murphy at (513) 561-0883 or visit
www.lambdatechs.com.

###

Web Site =
http://www.lambdatechs.com/html/documents/LT_Press_Release_AV-8B_F402_LPC1_Vane_App_Note_June_2007_final.pdf


Contact Details = Contact: Brian C. Murphy
Lambda Technologies Corporate Headquarters
3929 Virginia Avenue
Cincinnati, OH 45227-3411
Tel: (513) 561-0883
Toll-Free: (800) 883-0851
Fax: (513) 561-0886
E-mail: bmurphy@lambdatechs.com

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