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
A.4 Second evaluation step
A.5 Results
Bibliography