Sandia NRT Blade-0 Laboratory Modal Survey

Sara Fairchild; Ryan Beach; Lindsay Proell; Scott Hughes

doi:10.2172/1825235

Sandia NRT Blade-0 Laboratory Modal Survey

Sara Fairchild, Ryan Beach, Lindsay Proell, Scott Hughes

Research output: NREL › Presentation

Abstract

Modal testing was performed on the Sandia NRT Blade-0 in building A-60 at NREL/NWTC. Modal testing was intended to identify the fundamental frequencies of the blade. The blade was cantilevered to the A-60 test stand. Fundamental frequencies were identified using impact modal testing. Additional tests included free-decay testing to quantify damping at small displacements. Small-displacement modal testing aims to minimize the influence of aerodynamic damping; roaming accelerometer impact testing with the development of a dynamic frame model enabled visualization of mode shapes.

Original language	American English
Number of pages	28
DOIs	https://doi.org/10.2172/1825235
State	Published - 2021

NREL Publication Number

NREL/PR-5000-79417

Keywords

modal survey
national rotor testbed
NRT
wind turbine blade

Access to Document

10.2172/1825235

https://www.nrel.gov/docs/fy22osti/79417.pdf

Cite this

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title = "Sandia NRT Blade-0 Laboratory Modal Survey",

abstract = "Modal testing was performed on the Sandia NRT Blade-0 in building A-60 at NREL/NWTC. Modal testing was intended to identify the fundamental frequencies of the blade. The blade was cantilevered to the A-60 test stand. Fundamental frequencies were identified using impact modal testing. Additional tests included free-decay testing to quantify damping at small displacements. Small-displacement modal testing aims to minimize the influence of aerodynamic damping; roaming accelerometer impact testing with the development of a dynamic frame model enabled visualization of mode shapes.",

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author = "Sara Fairchild and Ryan Beach and Lindsay Proell and Scott Hughes",

year = "2021",

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AU - Fairchild, Sara

AU - Beach, Ryan

AU - Proell, Lindsay

AU - Hughes, Scott

PY - 2021

Y1 - 2021

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AB - Modal testing was performed on the Sandia NRT Blade-0 in building A-60 at NREL/NWTC. Modal testing was intended to identify the fundamental frequencies of the blade. The blade was cantilevered to the A-60 test stand. Fundamental frequencies were identified using impact modal testing. Additional tests included free-decay testing to quantify damping at small displacements. Small-displacement modal testing aims to minimize the influence of aerodynamic damping; roaming accelerometer impact testing with the development of a dynamic frame model enabled visualization of mode shapes.

KW - modal survey

KW - national rotor testbed

KW - NRT

KW - wind turbine blade

U2 - 10.2172/1825235

DO - 10.2172/1825235

M3 - Presentation

ER -

Sandia NRT Blade-0 Laboratory Modal Survey

Abstract

NREL Publication Number

Keywords

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Cite this