Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Significance and use
6 Apparatus
6.1 Ultrasonic tank with thermostatic control
6.2 Temperature measurement device
6.3 Test specimen holder
6.4 Transducers
6.5 Transducer holders
6.6 Pulse generator
6.7 Signal recording system
7 Test specimens
8 Test specimen preparation
9 Test procedure
9.1 Choice of frequency
9.2 Establishment of the test temperature
9.3 Reference test without test specimen
9.4 Measurement with the specimen
10 Calculation
10.1 Delay
10.2 Calculation of the propagation velocities
10.3 Calculation of the refracted angle theta[r]
10.4 Identification of the elastic constants, C[ij]
10.5 Back calculation of the phase velocities
10.6 Polar plots of the velocity curves
10.7 Calculation of the quadratic deviation
10.8 Calculation of the engineering constants
11 Test validity
11.1 Measurements
11.2 Criterion of validity for the reliability of the C[ij]
components
12 Test report
Annex A (informative) - Example of a presentation of the
results for a material with orthothropic symmetry
A.1 Velocity curves
A.2 Stiffness matrix with stiffness components
A.3 Engineering constants
Bibliography