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Viscoelastic Materials Testing
When it comes to characterizing the viscoelastic properties of materials and components there are no easy answers. Viscoelastic materials exhibit stress/strain performance that is history and path dependent. Understanding the dynamic behavior of viscoelastic materials in response to large deflections, step loading or cyclic excitation is important in the design of any product or component where vibration isolation or noise attenuation characteristics are required or where viscoelastic materials are used as structural elements. The knowledge gained can be used to optimize automotive engine and body mounts, tires, sporting equipment, medical devices, orthopaedic implants, prosthetic limbs, foods, consumer products, manufacturing equipment
and more.
Bose products are used in laboratories throughout the world to perform tests such as hyperElasticity, stress relaxation and creep, dynamic materials characterization and rheology. Using leading-edge technology, the Bose testing product line meets the needs of today's user while offering the expandability for future test lab requirements. ElectroForce® test instruments coupled with powerful WinTest® digital control software meet the needs of these demanding applications over a wide range of test requirements.
The high response and low harmonic distortion of ElectroForce systems ensures that you will achieve optimum results over a range of dynamic amplitudes, force levels, frequencies, and testing rates not available elsewhere. Using advanced Bose motor designs and computer technology, these systems offer versatility for a wide variety of test applications involving research, quality control and production. The reliable mechanical designs, no-maintenance approach and software architecture make testing of engineered materials and components a smooth and easy process.
In the dynamic materials characterization test, a small sinusoidal signal is input into the specimen and the resulting load and deflection amplitudes and the phase angle (d) between the signals is measured. The three measurements are then used to determine the Dynamic Stiffness Storage Stiffness and Loss Stiffness. These can be converted to material Dynamic Modulus measurements using a wide variety of standard shape factors. These properties are used to predict the behavior of components or they can be input into models to determine how the overall system will respond as a function of temperature, frequency, dynamic vibration, or mean condition.
Useful links:
ASTM D-11 or Society of Rheology
ACS Rubber Division
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Toll Free 1-866-TESTING
(1-866-837-8464) |
| ElectroForce Test Instruments for Materials Testing and Medical Device Development |
Bose Corporation  ElectroForce Systems Group |
| 10250 Valley View Road, Suite 113 |
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Eden Prairie, Minnesota 55344 USA |
| 952.278.3070 |
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FAX: 952.278.3071 |
electroforce@bose.com
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