NEN EN 15335 : 2007

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Significance and use
6 Apparatus
   6.1 Vacuum vessel
   6.2 Transducers
   6.3 Carbon fibre-bundle loops
   6.4 Pumping unit
   6.5 Control and evaluation units
   6.6 Balance
   6.7 Micrometer
   6.8 Callipers
7 Test specimens
   7.1 General
   7.2 Shape and dimensions
   7.3 Plane parallelism
   7.4 Number of test specimens
8 Test procedure
   8.1 Test specimen preparation
   8.2 Adjustment of the apparatus
   8.3 Measurement at room temperature
   8.4 Measurement at high temperatures
9 Calculation of results
   9.1 Basic concept
   9.2 How to calculate eigenfrequencies
   9.3 Identification, matching and fitting
   9.4 The two evaluation steps
10 Accuracy of method and errors
11 Test report
Annex A (informative) Example
   A.1 General
   A.2 Measurement
   A.3 First evaluation step
   A.4 Second evaluation step
   A.5 Results
Bibliography

Specifies the resonant beam method for the determination of the dynamic elastic moduli of fibre reinforced ceramic matrix composites from 20 degrees C up to 2000 degrees C in vacuum or inert atmosphere.