Index
Test machines
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Test ancillaries
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Measurement
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Production
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Services
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Miscellaneous
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Site Updated
2 February 2017
Digital control and measurement electronics for Amsler Vibrophore ®
Resonant Test Machines
Since the early 1970s Si-Plan has manufactured replacement controllers for Vibrophore Resonant Test Machines. The first systems replaced the original valve-based controllers supplied with the Vibrophores. They provided solid state analogue control, bringing better control of test loads and much improved reliability and ease of use. Many of the early Si-Plan Vibrophore controllers are still in daily operation.
The analogue controller was continually developed until 2004, when it was superseded by the digital controller, with computer user interface and data logger. The user screen is illustrated below. Where required, customer specific software and user interface can be offered.
Resonant machines come in a number of forms and common names are Si-Plan®, Amsler®, RUMUL®, Zwick® and Instron®.
Resonant test machines are ideal where a large number of cycles is required, with typical test frequencies in the range 80 – 300Hz.
Resonant machines are also very energy efficient with power requirements on a test of 10kN – 100kN at 120Hz, for example, in the order of 600 watts. Contrast this with a servo hydraulic machine which would test at around 30Hz and require in excess of 20 kilowatts.
The main application is HCF (high cycle fatigue) in the following areas- materials testing – research into material properties
- bolt and fastener testing – often in the aerospace industry
- re-enforcing bar testing – in the steel/construction industry
Supply and upgrade of machines
Si-Plan can upgrade customers' test machines to the latest standards.
Si-Plan usually has second-hand refurbished machines available with new digital controller or second-hand analogue controller. These machines can be delivered, installed and calibrated to UKAS and ASTM standards.
Mechanical and electrical spare parts can also be supplied for most machines.
Si-Plan also offers new resonant testing machines of our own design and manufacture. Typical sizes are 20kN, 100kN, 200kN, 400kN and 600kN frames.
Grip and collet systems for rebar, bolt and materials tests are offered as accessories and specific fixtures enable torsion and bending tests. Furnace and environmental chambers further widen the testing scope of the resonant machine.