Fracture Behavior of CFRP by Time-Frequency Analysis Method
- 1. Pukyong National University, Busan (Korea, Republic of)
Description
Fourier transform has been one of the most common tools to study the frequency characteristics of signals. With the Fourier transform alone, however, it is difficult to tell whether signal's frequency contents evolve in time or not. Except for a few special cases, the frequency contents of most signals encountered in the real world change with time. Time-frequency analysis methods are developed recently to overcome the drawbacks of Fourier transform, which can represent the information of signals in time and frequency at the same time. In this study, damage process of a cross-ply carbon fiber reinforced plastic (CFRP) under monotonic tensile loading was characterized by acoustic emission. Different kinds of CFRP specimens were used to determine the characteristics of AE signals. Time-frequency analysis methods were employed for the analysis of fracture mechanisms in CFRP such as mix cracking, debonding, fiber fracture and delamination
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Society for Nondestructive Testing
- Journal Volume
- 21
- Journal Issue
- 1
- Series
- 11 refs, 6 figs
- Journal Page Range
- p. 39-45
- ISSN
- 1225-7842
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 42054483
- Subject category
- S42: ENGINEERING;
- Descriptors DEI
- ACOUSTIC EMISSION TESTING; CARBON FIBERS; DAMAGE; FRACTURES; REINFORCED PLASTICS; SIGNALS; TENSILE PROPERTIES
- Descriptors DEC
- ACOUSTIC TESTING; FAILURES; FIBERS; MATERIALS; MATERIALS TESTING; MECHANICAL PROPERTIES; NONDESTRUCTIVE TESTING; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROCHEMICALS; PETROLEUM PRODUCTS; PLASTICS; POLYMERS; REINFORCED MATERIALS; SYNTHETIC MATERIALS; TESTING