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Equipment

VAL equipment is mainly used for acoustic and vibration measurements. Below you will find a summary of the VAL Equipment list:

List of Val Equipment

  • Durham aneochoic room of inside dimensions (wedge tips to wedge tips) 5.4*4.1*2.4 m and with a cutoff frequency of 100 Hz
  • Durham reverberant chambers (transmission chambers) of volume 40.2m^3 (source chamber) and 40.2m^3 (receiving chamber) connected by a test section
  • Randolph anechoic room of dimensions 4.5*2.2*2.5 m and with a cutoff frequency of 250 Hz
  • Randolph reverberant chambers (transmission chambers) of volume 49.6m^3 (source chamber) and 47.8m^3 (receiving chamber) connected by a test section
  • 2 Dual channel FFT B&K analyzers (2032 and 2034)
  • 1 Portable dual channel FFT B&K analyzer (2048)
  • 1 16-channel Zonic analyzer based on Macintosh
  • 1 Polytech laser vibrometer (OFV-501/OFV-2600)
  • B&K sound levelmeter (2231)
  • B&K sound intensity probe (3520)
  • Automated 1D traverse for array of 90 phase matched microphones (airplane)
  • Automated 2D traverse for vibration measurements of planar structures
  • Automated 2D traverse for vibration measurements of cylindrical structures
  • Automated 1D traverse for acoustic measurement (anechoic chamber)
  • B&K standing wave apparatus (4002)
  • Various signal generators
  • Various shakers
  • Various piezoelectric inertial actuators
  • Various microphones
  • Various accelerometers
  • Various microphone and accelerometer calibrators
  • Various power amplifiers, charge amplifiers and pre-amplifiers
  • Various filters
  • Various oscilloscopes
  • 3 GPIB cards
  • 6 DSP boards TMS320C30 and 1 DSP board TMS320C31 with 5 expansion board sets
  • 1 DSP board TMS320C40
  • 2 C40 DSP boards
  • M67 and Q67 DSP boards
  • Various LMS active control systems for MIMO narrowband and broadband noise fields
  • IBM RISC workstation with a suite of FEM/BEM numerical codes for structural and acoustic analysis