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30 Years of Experience with Piezoelectric Transducers
A piezoelectric accelerometer is a mechanical assembly consisting of a number of piezoelectric forms (discs, squares or rectangles) and a seismic mass. A piezoelectric material gives an electric output when pressure is applied or conversely, changes its dimensions when an electrical signal is applied. An accelerometer uses this piezoelectric effect to convert mechanical energy into electrical energy. A piezoelectric accelerometer is fundamentally a mass spring system with a high resonant frequency. Such a system can be used in the longitudinal axis if it is a compression mode sensor or in the transverse axis if it is a shear mode sensor. A newly patented push-pull system combines the advantages of both the shear and compression mode accelerometers.
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Features |
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- Gas Turbine Engine Monitoring (External & Internal)
- Auxiliary Power Unit Monitoring
- Bearing Analysis
- Gearbox Analysis
- Modal Analysis
- Helicopter Rotor System Diagnosis
- HUM-System (Health and Usage Monitoring)
- Airframe Structure Vibration Analysis
- Ground Test Applications
- Active Control
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- Basic design allows customized construction
- No maintenance required
- Designed for modern aircraft engine environmental
conditions
- Hermetically sealed construction
- Stainless steel, titanium or lnconel housing
- Wide temperature range (up to 780°C)
- No moving parts and therefore high reliability (MTBF
> 100,000 hours)
- Wide frequency range (up to 60 kHz)
- Excellent linearity (<1%)
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Experience/Capabilities/Services
Dual element accelerometer
mounted on engine casing
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Vibro-Meter has already accumulated over 30 years of experience in the field of piezoelectric accelerometers. A very broad range of applications have been covered. Among the most important
applications are those for jet engines on civil and military aircraft. Due to our experience, Vibro-Meter is consulted early in the development phase of the jet engine in order to develop the best solution in collaboration with the engine manufacturer. This cooperation with the engine manufacturer continues through the entire development program to obtain an
optimised and mature product.
Vibro-Meter is proud to have been selected as the vibration transducer supplier of all large jet engines for civil applications in the
western world during the last decade. This achievement has been possible
thanks to the expertise we offer to the engine manufacturers: high
quality, reliable products, on time delivery and extensive product
support services. Companies like Rolls-Royce, Snecma, MTU, Turbomeca, IAE,
General Electric, Pratt & Whitney, Allison Gas Turbines, etc. are successfully using our accelerometers.
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