The number of aging nuclear power plants (NPPs) has increased recently. Accordingly, the number of operational interruptions has increased due to malfunctions of the NPPs secondary systems. These cases occur in the secondary systems of NPPs with a range of structures due to fatigue, wall-thinned defects, corrosion, etc. Of these problems, wall thinned defects occur in the pipes by the diffusion...

Abstract During a regular inspection of multi‐span highway bridge, an unusual deformations external post‐tensioned tendons were observed. These not noticed or recorded during the previous main inspections. A detailed visual condition was performed on all bridges with by mapping location and extent deformation. Based this, several non‐destructive tests performed, where first noticed, from magnet...

Reliable assessment procedures are an important aspect of maintenance concepts. Non-destructive testing (NDT) methods are an essential part of a variety of maintenance plans. Fracture mechanical assessments require knowledge of flaw dimensions, loads and material parameters. NDT methods are able to acquire information on all of these areas. However, it has to be considered that the level of det...

This paper presents an advanced methodology for the detection of damage in aircraft composite materials based on sensor fusion two image-based non-destructive evaluation techniques. Both techniques, phased-array ultrasonics and infra-red thermography, are benchmarked aircraft-grade painted material skin panel with stringers. The sensors systems carrying out inspections have been developed minia...

Interior and exterior wind turbine blade inspections are necessary to extend the lifetime of generators. The use unmanned vehicles is an alternative performed by technicians that require cranes ropes. even more challenging due confined spaces, lack illumination, presence potentially harmful internal structural components. Additionally, cost manned interior a major limiting factor. This paper an...

Abstract Due to the lack of Boiling Water Reactor (BWR) fuel examination data after dry storage, Taiwan Power Company and Institute Nuclear Energy Research jointly launched “Taiwan Fuel Storage Demonstration Project” collect characteristics under simulated storage. To meet project requirements, BWR rods in different designs will be selected then store storage containers environments for 10 year...

the importance of iranian ancient as architectural heritage have to competent international prestige a nd respect due this is important with regard to proper conservation met hods based on non-destructive evaluation methods and non-contact testing providing enough accuracy and speed to bri ng performance to stabilize while correct location and age value of valuable architectural aspect of quant...

In this paper, the variability of tensile mechanical properties silver birch timber is investigated and models for prediction tension strength stiffness are developed. Through visual inspections non-destructive tests, various related indicators identified. Destructive tests subsequently performed determination stiffness. On each board, strains measured at four localized regions, whereby, knot s...

one of the challenges in non-destructive testing schemes using the ultrasound pulse-echo technique is to identify those defects whose sizes are less than or equal to the detection resolution that is dependent on the width of the ultrasound pulse. existing methods also require a reference specimen of the same defective material, which may not be available in some cases. we present a new method f...

Using aerial platforms for Non-Destructive Inspection (NDI) of large and complex structures is a growing field interest in various industries. Infrastructures such as: buildings, bridges, oil gas, etc. refineries require regular extensive inspections. The inspection reports are used to plan perform required maintenance, ensuring their structural health the safety workers. However, performing th...