The reflective pulsed terahertz time-domain spectroscopy system with a frequency range of 0.25 ~ 2.5 THz was used to detect the defects of polyethylene pipe hot-melt joints. Using white PE100 plate, normal and inclusion defect samples were made. Through the point-by-point scanning of the terahertz system, the waveform and kurtosis imaging are obtained. According to the difference between the waveform and the image, the presence or absence of defects and the size of defects can be distinguished. The sobel edge detection operator has a good recognition level for defects. The recognition error is below 6.47 %, and the error of metal recognition can reach 3.54%.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.