Mechanical Testing of
Materials Structures and Components

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Mechanical Testing of Materials Structures and Components

Southern Research provides a comprehensive range of material mechanical property testing and analysis that supports industrial, aerospace, and military clients. Our experienced engineering team has proven expertise in materials behavior, analysis, and evaluation and is supported by a contingent of highly skilled experimentalist technicians. Moreover, SR has a well-established testing and measurements capability and is widely recognized as the leading laboratory in the country for high-temperature evaluation of advanced materials.

Our engineering team has a longstanding history of working closely with clients in the design and execution of projects that meet their specific needs. In addition, we are adept at managing a range of project types from the most complex and challenging to quick-turn analyses.

Testing Parameters, Facilities, and Instrumentation

  • SR offers clients the ability to measure material behaviors in a range of temperatures from cryogenic to more than 5500° Materials evaluated include, but are not limited to: resin, metal and ceramic matrix composites, metals, graphites, carbon/carbons, and monolithic ceramics.
  • Material properties are typically determined by techniques more rigorous than requirements imposed by ASTM methods. If standard methodology is not established, skilled SR engineers will develop unique tests tailored to the material or application.
  • The mechanical testing laboratory contains more than 40 major, fully-instrumented test stands, many having been developed by and unique to SR. The testing machines are either mechanically or servo-hydraulically driven, and calibration is maintained with ASTM E4-89 load verification requirements. Instrumentation includes: strain gages, extensometers, optical strain analyzer, modal acoustic emission sensors, and strain field visualization by DIC. Sample capabilities range from small filament specimens to structural components with dimensions greater than 6 feet.

Specialized Mechanical Property Tests

Specialized mechanical property tests available at SR include:

  • Test methods for lifetime studies of materials in high-temperature air environments
  • Materials testing for space structures
  • Strain visualization and shape deformation
  • Large structures characterization
  • Complex multi-axis loads and unique designs
  • Finite element analysis

Basic Mechanical Property Tests

Basic material mechanical property tests available at SR include:

Tension

  • Gas-bearing (vacuum/pressure, RT to 3000°F air, cryogenic to 5500°F inert)
  • Hydrostatic ring tension (RT to 4500°F inert, RT to 2200°F air)
  • Yarn/filament/fiber (RT to 5000°F inert, RT to 2500°F air)
  • Precision elastic limit 

Compression

  • Gas-bearing (vacuum/pressure, cryogenic to 5500°F inert)
  • Hydrostatic ring compression (RT to 4500°F inert)
  • Controlled face support (~ASTM D695 RT to 2800°F air)

Shear

  • Torsion (cryogenic to 5500°F inert)
  • Double-notch shear (cryogenic to 5500°F inert, RT to 2800°F air)
  • Iosipescu shear (cryogenic to 5500°F inert)
  • Button torsion (RT to 5500° inert)
  • Plate

Flexure

  • 3-, 4-point bend (cryogenic to 5500°F inert)
  • Short beam shear (cryogenic to 5500°F inert)

Dynamic Modulus

  • Ultrasonic (cryogenic to RT)
  • Young’s and shear via resonant frequency (RT to ~1800°F)
  • Heat-treatment furnaces to 5750°F

Fatigue

  • Tension (cryogenic to 3000° air)
  • Compression (RT to 2800°F air)
  • Interlaminar shear (RT to 2800°F air)

Creep and Stress Rupture

  • 36 creep frames (RT to 3000°F air)
  • Yarn/fiber/tow (RT to 5000°F inert, RT to 2800°F air)

Flex creep (RT to ~2100°F)

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