Abstract A novel failure model updating methodology is presented in this paper for composite materials. The innovation the approach found both experimental and computational methods used. Specifically, a dominant bottleneck data-driven development relates to types of data inputs that could be used calibration or updating. To address issue, nondestructive evaluation obtained while performing mec...

Aging mechanisms of two polymeric insulation materials that are used widely in nuclear power plant low-voltage cables; cross-linked polyethylene (XLPE) and ethylene propylene rubber/ethylene propylene diene terpolymer (EPR/EPDM), are reviewed. A summary of various nondestructive methods suitable for evaluation of cable insulation is given. A capacitive sensor capable of making local nondestruct...

NIR-FT-Raman spectroscopy was applied for a nondestructive analysis of single seeds (fruit mericarps) of 36 accessions belonging to various species of the Apiaceae family. Main seed components such as fatty acids, polysaccharides, proteins, and lignin were identified based on the obtained Raman spectra. Variation at the species and genus level was related to differences observed between spectra...

This paper presents a new laser lock-in thermography (LLT) technique for nondestructive evaluation. LLT utilizes a modulated continuous wave laser beam as a heat source to obtain high fidelity thermal wave images even at the presence of background heat disturbances. The thermal waves propagating along the surface and through-the-thickness directions of a structure are visualized using newly dev...

The paper carried a brief overview of artificial intelligence algorithms applicable to nondestructive testing. It focuses on two methods: artificial neural networks and fuzzy logic. Selected examples of applications of these methods in digital radiography and eddy current method are given.

Microwave thermography (MWT) has many advantages including strong penetrability, selective heating, volumetric heating, significant energy savings, uniform heating, and good thermal efficiency. MWT has received growing interest due to its potential to overcome some of the limitations of microwave nondestructive testing (NDT) and thermal NDT. Moreover, during the last few decades MWT has attract...

1. Introduction Eddy current examination has its origin with Michael Faraday's discovery of electromagnetic induction in 1831. Faraday was a chemist in England during early 1800's and is credited with the discovery of electromagnetic induction, electromagnetic rotations as the magneto-optical effect, diamagnetism and other phenomena [1]. Faraday discovered that when a magnetic field passes thro...

It has been proved by experiments that the metal magnetic memory (MMM) NDT method can effectively detect the stress concentration of ferromagnetic metal parts. But it is still hard to evaluate the stress concentration quantitatively because of the confusion in the mechanism of MMM method. In this paper experiments are designed and carried out to investigate the relationship between the MMM sign...