Tone Burst Eddy current Thermography (TBET) is a new hybrid, non-contacting, nondestructive evaluation method with a wide range of applications including aircraft. Aircraft can have structural cracks or other defects which can lead to failure. The safe life of structural members can be evaluated by determining the size and orientation of critical cracks. For understanding cracks, fundamental kn...

On-line defects detection of structural component of track crane such as crane boom, outriggers, turntable and vehicle frame, is a difficult problem of nondestructive testing (NDT). In the present study, the usefulness of acoustic emission (AE) measurements for the detection of welding crack defects in the specimen made of HG70 steel, which is widely used for manufacturing structural component ...

Abstract. Improved Giant MagnetoResistance Magnetometers (IGMRM) offers many advantages for subsurface cracks detection. This paper presents new detection opportunity of fatigue cracks close to fasteners or rivets with an improved rotating head. The latter was developed around an IGMRM and a well design electromagnetic flux focuser. The capabilities of the system for the one to the third alumin...

Cracks are an important indicator reflecting the safety status of infrastructures. This paper presents an automatic crack detection and classification methodology for subway tunnel safety monitoring. With the application of high-speed complementary metal-oxide-semiconductor (CMOS) industrial cameras, the tunnel surface can be captured and stored in digital images. In a next step, the local dark...

Since thin-walled composite structures are widely used in structural engineering, damage in such structures is an important issue of research. Matrix cracking is a principal cause of failure in composites. In the present study, a composite matrix cracking model is implemented in a thin-walled hollow circular cantilever beam using an effective stiffness approach. Such structures are used to mode...