From Ground to Flight: Proven LPM® Technology

for Advanced Turbine Components

Doug Nagy, Jeff ChapinLiburdi Turbine Services, Mooresville, NC

dnagy@liburdi.com, jchapin@liburditurbine.comwww.liburdi.comAugust 13, 2019

Liburdi Turbine ServicesLiburdi Turbine Services hascore competency in hot sectionrepair, superalloy processing and gas turbine engineering

Hamilton, Ontario, CanadaCharlotte, North Carolina

Ground and Flight Component RepairsFor 40 years, Liburdi Turbine has been repairing and upgrading airfoils

With High Yields: Recover What Others Scrap

When is a Cracked Turbine Vane a Success Story?

LPM Repair Durability Truly Revealed After Service.

Notice the ‘new’ Cracks are NOT Preferentially Following Prior Repairs.

Thought Experiment; Boundary ConditionsJet Engines Achieve Maximum Efficiency at Highest Temperatures.

and when Maintaining Minimal Blade-Tip Leakage

Thought Experiment; Boundary ConditionsAero-component and aero-engine structures must be light, but light-weight structures struggle to be stiff.

Turbine cases are no exception

Thought Experiment; Developing SolutionsWhat if we could protect blade tips during rub events?

COMOTI Romanian Research & Development Institute for Gas Turbines

And if we Could have that Defense in Depth?

The Solution might be Grit-Filled LPM

Yes, LPM Abrasive Tips WorkOperated 14,000h on F-Class IGT with Single Crystal blades

Still Protective after Service Exposure

And LPM Abrasive Tips are Producible Applicable by Furnace Sintering

or, Induction Sintering

Conclusions• Liburdi Turbine Services developed LPM as an alternative to the

distortion of conventional weld repairs for vanes, and free of the gap limitations of braze.

• LPM has penetrated the OEM manufacturing plan and flight hardware

• LPM allows innovative design freedom.• Just imagine what LPM could do for you!