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ALIGNMENT AND DYNAMIC
VERIFICATION TRANSDUCERSCOMPONENT STRAIN GAGE SERVICEFEATURESFEATURES• Tovey Engineering makes alignment and dynamic verification transducers to support the materials
testing industry.

Tovey Engineering offers strain gaging services to the industry including engineering the project,installing strain gages, wiring the circuit, installing appropriate protective coatings, and testing forfunction.

• Alignment transducers are made to use
in machine alignment to minimize theimposition of bending strains and stresses on specimens under test. Thesetransducers are made to closely simulatespecimens used for materials testing.
TEI can manufacture the specimens or
instrument specimens furnished by thecustomer. Alignment transducers typically have eight to twelve strain gages
placed on the test section to allow thebending induced in the specimen by themachine and grip fixtures to be measured. Machine components are thenadjusted to bring the alignment into appropriate bounds. Our alignment transducers meet the requirements of ASTM
E1012, Verification of Test Frame and Specimen Alignment Under Tensile and Compressive AxialForce Application.
• Dynamic verification specimens are used to determine the range of frequencies the testing machine
can be operated over while maintaining accurate force measurement with a given specimen geometry
and fixtures. These parts are instrumented as full bridge transducers. The correlation between themachine load cell and dynamic verification transducer is determined quasi-statically. The machine isthen operated at increasing frequencies of load application until the machine load cell and the verification transducer differ in output by the allowable error (typically 1%). This frequency sets the upperbound of the frequency spectrum over which the machine can be operated in that configuration.
• We offer custom transport cases and can supply fixtures for the transducers. We work closely withthe customer to design custom made transducers to satisfy each application.

TOVEY ENGINEERING, INC. • 1619 W Knudsen Drive • Phoenix, AZ 85027
Phone: (623) 434-5110 • Fax: (623) 434-5130
Email: tei_sales@toveyengineering.com • Web: www.toveyengineering.com© 2015 Tovey Engineering, Inc.

Tovey will perform services in our facility when possible or do field installations when necessary.
The same standards and methods used for Tovey transducer manufacture are used in component
gaging, resulting in high quality, reliable strain gage installations.

Motor cycle Brake Lever instrumented
to measure bending strain. Typical ofmany automotive and aerospace vehicle component strain gage jobs.

On-site installation of strain gages on
the nose gear drag length ofa Boeing 747. The drag length was instrumented as a full bridge transducer tomeasure towing force aplied to the landing gear during towing. Calibration wasperformed using a Tovey fatigue rated
100 klbf load cell installed in a modified
tow bar.

Strain gage installation on the Mars Science Lab in a clean room environment.
In total 600 strain gages were installedover a 6 month period as assembly wascompleted on the Mars Science Lab
Cruise Stage structure, Descent Stage
structure, and Rover component parts.
Some of the work was performed at theTovey facility, but much of the work wasdone on-site.

TOVEY ENGINEERING, INC. • 1619 W Knudsen Drive • Phoenix, AZ 85027
Phone: (623) 434-5110 • Fax: (623) 434-5130
Email: tei_sales@toveyengineering.com • Web: www.toveyengineering.com© 2015 Tovey Engineering, Inc.