Resonant Spine

The Wykeham Farrance resonant column is a versatile system that combines resonant column and torsional shear tests in one convenient device to evaluate shear modulus and damping ratio. Includes:
  • chain-driven motor that applies torsional load to the specimen
  • a series of transducers with signal conditioning
  • cell and back pressure electropneumatic control system
  • data logger.
Main features
  • Versatile: The resonant column and cyclic torsional cutting devices are combined into a single device, allowing you to determine the following:
  • RC: damping ratio of the half power bandwidth, free vibration and white noise data
  • TSS: damping rate of hysteresis loops
  • Compact and easy to install
  • Robust and durable design: The rugged construction minimizes losses and helps provide a consistent frequency response.
  • User-friendly graphical user interface (GUI). The high-quality laptop provided with pre-installed intuitive Windows-based software allows you to run several stages: saturation, isotropic consolidation, resonance frequency, and torsional shear. The 7″ color touch screen with high resolution display makes it easy to monitor cell, back and pore pressure.
  • Efficient and time-saving: The software uses the “Chirp Method” to continuously change the frequency applied to the sample. This method does not experience jumps when changing from one frequency to another, improving the resolution of the strain measurement and reducing test time.
  • Easy saturation: Additional top drain included, ensuring proper sample saturation.
  • High resolution and accuracy: The proximity transducers are mounted on the automated positioning system that automatically places them in the best measurement position after saturation and consolidation, eliminating the need for manual adjustments during testing.
Main features
  • Chain-driven motor that applies torsional load to the specimen
  • A series of transducers with signal conditioning
  • Electro-pneumatic back pressure cell and control system
  • Data logger.

Description

Standards

  • ASTM D4015

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