Testing Services
| JLR provides a value-added combination of traditional machine testing services and advanced analytical techniques. We are leaders in providing modal, machine testing and diagnostic services for turbomachinery, machine tools, cutting tools, turbine blades, mechanical systems, structures, rotating machinery and more. In addition, utilizing state-of-the-art equipment and customized software we diagnose the onset of mechanical vibration faults, performance degradation and component remaining life. |
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JLR's testing services include:
- Strain Gage Testing
- Vibration Testing, Analysis and Diagnosis
- Data Aquisition and Reduction
- Modal Testing Capabilities
- Quality Control Blade Frequency Testing
- Moment Weigh
- Pressure, Force and Torque Measurements
- Equipment Rental
- Flow Path Transverse Testing
- Steam Wetness Measurements
Vibration Testing, Analysis and DiagnosisJLR provides a number of services related to vibration measurement for both rotating and stationary components:
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- measurements of blade-disk vibrations
- non-contacting blade tip vibration tests
- shaft torsional vibration measurements
- piping strain & vibration measurements.
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IMI Sensors, a Division of PCB Piezotronics, Inc. offers a wide range of vibratory test and measurement solutions for rugged and demanding industrial applications.
Modal Testing Capabilities
- Natural frequencies, mode shapes & operational deflection shapes(ODS) of rotating and stationary components
- On-location testing
- Generation of key verification data for Finite Element computer models used in the failure analysis.
- measurements of blade-disk vibrations
- Experience on more than 300 different structures.
Quality Control Blade Frequency Testing "Refurbished or reverse-engineered turbine blades are frequency-tested to ensure compliance with original equipment specifications. This is especially critical for longer tuned blades that are susceptible to high-cycle fatigue failure due to operating resonances. JLR Technologies has conducted quality control frequency testing of blades for over 20 years.
Moment Weigh
JLR provides moment weigh and the loading sequence for turbine blades. Data is collected (blade weight and center of gravity information) and used in a special software subroutine that will determine the exact blade stacking position (loading chart).
Strain Gage Testing - Stationary and Rotating
Telemetry Capabilities
- Verify analytical models
- Establish safe operating loads
- Applicable to high temperatures and aggressive environments
Telemetry services include:
- Selection of gage size and type, number of gages.
- Recommended bonding methods, and gage orientation.
- Considerations of temperature, test duration and required accuracy.
- Practical strategies for dealing with lead wire paths, connection terminals, clearances and gage protection.
Custom Measurement Instruments (Transducers)
In partnership with the PCB Group, JLR provides customized measurement instruments to meet specific needs. Applications range from smart sensors and wireless transducers, special mounting or installation requirements, data acquisition systems and customized software applications to process the data.
Pressure, Force, Torque and Acoustic MeasurementsJLR is uniquely positioned, through its relationship with STI and the PCB Group of companies, to offer a range of pressure, force, torque and acoustic measurement services and a full range of data analysis tools for evaluation and resolution, as well as access to a host of pressure, force, torque and acoustic sensing devices.
PCB Piezotronics, Inc.
PCB, Pressure and Force Sensors
Key Transducers, Inc.
Larson Davis
Data Acquisition and Reduction We offer custom virtual instrument design with LABVIEW software and National Instruments data aquisition cards. Calibration systems include shock accelerometer calibration based on Hopkinson bar, transverse sensitivity, calibration of accelerometers at various temperatures (includes environmental chamber temperature control, shaker motion control, data acquisition and processing) as well as data aquisition and processing systems for turbomachinery and general vibration applications. Experience indicates that virtual instruments provide significant cost reduction through flexibility.
Equipment Rental
JLR and our affiliates have a large selection of test equipment available for rent. A partial listing includes:
- Accelerometers
- Acoustic transducers
- Array microphones
- Cables, accessories and adaptors
- Variety of data acquisition and analysis equipment
- Dosimetry
- Environmental systems
- Force sensors
- Handheld accelerometer calibrators
- Impact Hammers
- Microphone power supplies/preamplifiers
- Signal conditioning
- Sonic Digitizers
- Sound Level meters
- Tachometers
Flow Path Traverse TestingField tests can be performed within the flow path of operating steam turbines to measure span-wise distributions of pressure, velocity, and flow angles. These tests, performed using pitot-static probes and developed under the sponsorship of EPRI, help diagnose steam path design problems and produce flow conditions for subsequent CFD stage models.
Steam Wetness Measurements
A custom optical probe is used to characterize the quantity of condensed steam in two-phase flow near the turbine exhaust. The wetness probe is traversed to yield span-wise distributions of wetness. Both test equipment and procedures were developed under the sponsorship of EPRI.
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