Measurement of Elastic Constants of Thin Metallic Foil by Guided Wave Dispersion Characteristics
- 1. Korea Research Institute of Standards and Science, Daejeon (Korea, Republic of)
- 2. Pusan National University, Busan (Korea, Republic of)
- 3. Sejong University, Seouln (Korea, Republic of)
Description
As the development of MEMS/NEMS structure and application technology the demand for an assessment of the mechanical properties have increased. The mechanical properties are mainly evaluated by using tensile test or ultrasonic wave measurement. However, the new technology have been developed such as nano-indentation, guided wave method because they have a limitation in case of a thin plate and thin film. In the study, the guided wave velocities are measured by electromagnetic-acoustic transducer(EMAT), the material properties of thin metallic foils are obtained using optimization process of the theoretical and experimental group velocity of guided wave. The Young's modulus obtained by the optimization process(201.6 GPa), nano-indentation(207.0 GPa) and literature value(203.7 GPa) of a 50μm thick nickel thin plate shows good agreement within 3%
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Society for Nondestructive Testing
- Journal Volume
- 32
- Journal Issue
- 1
- Series
- 13 refs, 10 figs, 3 tabs
- Journal Page Range
- p. 41-46
- ISSN
- 1225-7842
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 43125164
- Subject category
- S42: ENGINEERING;
- Descriptors DEI
- ACOUSTICS; DISPERSIONS; ELASTICITY; OPTIMIZATION; TENSILE PROPERTIES; THIN FILMS; VELOCITY
- Descriptors DEC
- FILMS; MECHANICAL PROPERTIES