Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Cun Fu He"'
Publikováno v:
Experimental Mechanics. 60:679-694
Acoustic emission (AE) source localization is a powerful detection method. Time Difference Mapping (TDM) method is an effective method for detecting defects in complex structures. The core of this method is to search for a point with the minimum dist
Publikováno v:
2020 15th Symposium on Piezoelectrcity, Acoustic Waves and Device Applications (SPAWDA).
In the case of assuming that the debonding interface layer was a thin fluid layer and taking the structural boundary conditions into consideration, we derived the expressions of ultrasonic reflection/transmission coefficients in a thick adhesive laye
Publikováno v:
Applied Mechanics and Materials. 330:510-516
Most of imaging algorithms used in guided wave arrays share the same assumption that the signal scattered from defects will propagate uniformly in all directions. However, some recent researches on scattering properties of guided wave in defects demo
Publikováno v:
Applied Mechanics and Materials. 330:357-363
Truss structure is widely used in civil engineering applications for its advantages of easy transportation, convenient assembly and uniform loading. However, it is difficult to achieve real-time health monitoring because of connection diversity and c
Publikováno v:
Advanced Materials Research. 663:616-620
An imaging system of ultrasonic detection is presented for non-destructive testing (NDT) of complex structures by using virtual instrument technology. The control devices for C-scan as well as for imaging system are designed and manufactured. In the
Publikováno v:
Advanced Materials Research. 531:112-115
It is well known that the Born approximation technique is highly effective under weak scattering conditions. In the paper, a cement paste cylindrical specimen with complex flaw is prepared and ultrasonic measurements are carried out by experimental m
Publikováno v:
Transactions of Nonferrous Metals Society of China. 21:2597-2604
A robust experimental procedure was developed, by which the evolution of fatigue damage in AZ31 magnesium alloy was tracked online with the ultrasonic nonlinearity parameter β. β values of three sets of samples under different stress levels were me
Publikováno v:
Applied Mechanics and Materials. :2881-2885
The objective of this paper is to predict the flaw response in an inhomogeneous solid medium. Multi-Gaussian Beam (MGB) model is used to represent the incident ultrasonic beam. The effect of ultrasonic attenuation and phase velocity dispersion due to
Publikováno v:
Advanced Materials Research. :1188-1193
Ultrasonic methods are used in a wide variety of applications including medical studies, geological mapping, and nondestructive evaluation (NDE) tests. In the field of ultrasonic NDE, it is necessary to treat inverse problems of various types. The ob
Publikováno v:
Advanced Materials Research. 346:764-771
Microwaves penetrate inside of low loss dielectric materials and they are sensitive to the presence of internal interfaces and non-uniformities. This allows microwave nondestructive inspection techniques to be utilized for inspecting dielectric in me