SN EN 15335 : 2007

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