UNI EN 14186 : 2008
Current
The latest, up-to-date edition.
ADVANCED TECHNICAL CERAMICS - MECHANICAL PROPERTIES OF CERAMIC COMPOSITES AT ROOM TEMPERATURE - DETERMINATION OF ELASTIC PROPERTIES BY AN ULTRASONIC TECHNIQUE
10-07-2008
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
Describes an ultrasonic method to determine the components of the elasticity tensor of ceramic matrix composite materials at room temperature.
Committee |
CT 33
|
DevelopmentNote |
Supersedes UNI ENV 14186. (07/2008)
|
DocumentType |
Standard
|
PublisherName |
Ente Nazionale Italiano di Unificazione (UNI)
|
Status |
Current
|
Supersedes |
Standards | Relationship |
EN 14186:2007 | Identical |
EN 1389:2003 | Advanced technical ceramics - Ceramic composites - Physical properties - Determination of density and apparent porosity |
ISO/IEC 17025:2005 | General requirements for the competence of testing and calibration laboratories |
ISO 653:1980 | Long solid-stem thermometers for precision use |
EN 658-1:1998 | Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 1: Determination of tensile properties |
EN 12289:2005 | Advanced technical ceramics - Mechanical properties of ceramic composites at ambient temperature - Determination of in-plane shear properties |
EN 658-2:2002 | Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Part 2: Determination of compression properties |
ISO 3611:2010 | Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for external measurements — Design and metrological characteristics |
CEN/TR 13233 : 2007 COR 2007 | ADVANCED TECHNICAL CERAMICS - NOTATIONS AND SYMBOLS |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.