National Aeronautics and Space Administration

Glenn Research Center

Structural Benchmark Test Facility

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Description

The Structural Benchmark Test Facility provides a transition between material coupon experiments and multiaxial and subelement testing. Biaxial load test frames investigate structures ranging from cruciform plates to complex aerospace assemblies. Multiaxial stress fields on test articles reveal effects on deformation, damage, and life times.

Features

  • Two 490 kN in-plane biaxial load frames
  • Versatile loadframe configured for a cruciform specimen of established design, approximately 300 mm x 300 mm with a 100 mm square test area
  • Loads applied through four hydraulic actuators, each with a capacity of 490 kN in both tension and compression
  • Controlled temperature gradients and temperature capability up to 1500 °C
  • High vacuum environmental test chambers with capability for 10-7 torr for 2 hours
  • In-situ crack growth monitoring with resolution of 10 micron
  • State-of-the-art digital instrumentation including full-field optical strain measurement

Research Projects

  • Aeronautics/Aviation Safety/Integrated Vehicle Health Management/Validation of prognostic models for Ti-alloys and advanced disk alloys
  • Science/Radioisotope Power System/Benchmark testing of heater head of advanced stirling radioisotope generator to validate long-term durability
  • Past: Aeronautics/Ultra Efficient Engine Technology/Benchmark testing of superalloy lattice block materials and gamma titanium alumide sub-components for use as inlet flap in gas turbine engine

Potential Uses

  • Material and structural performance under biaxial loading condition at high temperature
  • Understanding of failure modes under biaxial loading condition at high temperature
  • Validation of life prediction models and structural design tools
  • Verification of structural performance and high temperature durability for subelements representing componnet design features

Point of Contact: Dave Krause, 216-433-5465