ISO 18437-4:2008
Current
The latest, up-to-date edition.
Mechanical vibration and shock — Characterization of the dynamic mechanical properties of visco-elastic materials — Part 4: Dynamic stiffness method
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English
20-05-2008
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ISO 18437-4:2008 specifies a direct method for measuring the complex dynamic moduli of elasticity (the Young, shear and bulk moduli, and their respective loss factors corresponding to the tensile, shear and all compressive strains) for polymeric (rubbery and viscous polymers, as well as rigid plastics) materials over a wide frequency and temperature range. Measurements are performed by the dynamic stiffness method, which uses electric signals from sensors attached to a test piece. These signals are proportional to the dynamic forces acting on the test piece and the strains in the test piece due to the effect of these forces.
The measurement frequency range is determined by the size of test piece, the accuracy required on the dynamic modulus measurements, the relationship between the stiffness of the oscillation generator and the stiffness of the test piece, and by the resonance characteristics of the test fixture used.
The method presented in ISO 18437-4:2008 allows measurement under any static pre-load allowed for the test piece (including the test piece having the non-linear characteristics under different static loads), but under small dynamic (acoustic) strains, i.e. in limits where the linear properties of the test piece are not distorted. Depending on the pre-load conditions, the relation between the moduli is unique.
| DevelopmentNote |
Supersedes ISO/DIS 18437-4. (05/2008)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| BS ISO 18437-4:2008 | Identical |
| NEN ISO 18437-4 : 2008 | Identical |
| GOST R ISO 18437-4 : 2014 | Identical |
| ISO 18437-6:2017 | Mechanical vibration and shock — Characterization of the dynamic mechanical properties of visco-elastic materials — Part 6: Time-temperature superposition |
| BS ISO 18437-6:2017 | Mechanical vibration and shock. Characterization of the dynamic mechanical properties of visco-elastic materials Time-temperature superposition |
| ISO 80000-4:2006 | Quantities and units Part 4: Mechanics |
| ISO 483:2005 | Plastics — Small enclosures for conditioning and testing using aqueous solutions to maintain the humidity at a constant value |
| ISO 23529:2016 | Rubber General procedures for preparing and conditioning test pieces for physical test methods |
| ISO 10112:1991 | Damping materials — Graphical presentation of the complex modulus |
| ISO 2041:2009 | Mechanical vibration, shock and condition monitoring Vocabulary |
| ISO 10846-1:2008 | Acoustics and vibration — Laboratory measurement of vibro-acoustic transfer properties of resilient elements — Part 1: Principles and guidelines |
| ISO 472:2013 | Plastics — Vocabulary |
| ISO 4664-1:2011 | Rubber, vulcanized or thermoplastic — Determination of dynamic properties — Part 1: General guidance |
| ISO 6721-6:1996 | Plastics Determination of dynamic mechanical properties Part 6: Shear vibration Non-resonance method |
| ISO 6721-4:2008 | Plastics Determination of dynamic mechanical properties Part 4: Tensile vibration Non-resonance method |
| ISO 6721-1:2011 | Plastics Determination of dynamic mechanical properties Part 1: General principles |
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