Princeton Junction, NJ November, 2007 Physical Acoustics
Corporation (PAC), a member of MISTRAS Group Inc., announces the
supply of a PCI-8 Multi-channel Acoustic Emission System to the
National Renewable Energy Laboratory (NREL) in Colorado and to
Sandia National Laboratories in New Mexico, for remote wind blade
The PCI-8 AE System uses multiple sensors or channels to detect
acoustic emission (AE) waveforms and features, using the advanced
AEwin Windows software. This system will be used for static fatigue
testing of wind turbine blades.
The purchase of the PCI-8 System permit enhanced stress correlation in conjunction with other external
sensor inputs. This gives a better understanding of how composites behave under loads. In addition, the PAC
AEViewer software package, provided to Sandia, allows scientists to remotely monitor and control their AE
With wind power becoming a growing source of energy in the world, the need to understand reliability and
performance characteristics of wind turbine blades has taken on a greater urgency. In order to improve power
turbine blade efficiency while maintaining strength and elasticity in severe wind loading conditions, both of the
labs are utilizing the PAC AE System, along with several other technologies.
Power Utilities across the country are starting to tap high power output wind turbines for use in their wind
farms, said Carlton Gonsalves, the AE Sales Manager for PAC. The review of our AE System will give the
research labs a more thorough understanding of wind turbine performance characteristics, which will allow
them to implement and design better and stronger wind turbine blades.
The National Wind Technology Center at the National Renewable Energy Laboratory and Sandia National
Laboratories are the nation's primary laboratories leading the efforts in renewable energy and energy efficiency
research and development. The goal of the wind energy research and development program is to increase the
viability of wind technology. This is done by improving wind turbine performance and reducing the overall cost
of energy from wind.
MISTRAS Group Inc. provides nondestructive testing products and services under the well-known brand names
of CONAM Inspection & Engineering Services Inc., Physical Acoustics Corporation, Code Services, Quality
Services Laboratories Inc., Caliber Inspection, PRI, NDT Automation, Controlled Vibrations Inc. and Vibra-
Metrics. MISTRAS Group provides Asset Inspection and Mechanical Integrity solutions to the Oil & Gas, Power
Generation, Aerospace, Infrastructure and Manufacturing sectors as well as strategic on-line instrumentation
that facilitates Plant Asset Management. In addition, MISTRAS is the leading provider of Enterprise Solution
Software that aids in the safe and profitable operation of industrial facilities worldwide.
For more information, please visit the companys website at www.mistrasgroup.com or contact David Sinay at