Abstract Reinforced concrete bridges with post‐tensioned cables are particularly critical structures, as the degradation of tendons is not fully detectable through conventional investigation methods and/or visual inspections, due to intrinsic nature structural typology. After shortly reviewing main applications current non‐destructive (ND) available for investigating deterioration and grout, pa...

in this paper a new method for nondestructive testing or nondestructive evaluation is proposed for glass-epoxy composite. for this purpose, impact-echo is used to evaluate the properties of composite materials, detecting internal defects and thickness measurement. in the impact-echo method a steel ball impacts on a composite plate and generates stress waves or p-waves which will be transferred ...

The use of non-metallic composites that are durable, low cost, and lightweight is growing fast in various industries. A commonly used form these materials the shape pipes can be used, for instance, oil gas industry. Such damaged due to material loss (defects holes), erosions, more which may cause major production failures or environmental mishaps. To prevent issues, non-destructive testing (NDT...

For the last 15 years, phased array has completely changed the face of ultrasonic non-destructive testing. This now-mature and widely adopted technology allows highly efficient inspections to be carried on critical components in aerospace, oil & gas, heavy industry and power generation plants. The Full Matrix Capture (FMC) technique is an upcoming and promising application of the phased array t...

This paper explains non-linear non-destructive evaluation of concrete aimed at examining the occurrence of non-linearity under non-linear wave propagation through the concrete. Standard cubic concrete sections in damaged and undamaged conditions were investigated. The specimen was first damaged under compression testing and then subjected to non-linear ultrasonic evaluation in two directions i....

Abstract The following paper proposes an Unmanned Aircraft System (drone) inspection framework for communities where guidelines this emerging technology have yet to be provided. involves pilot training in area with similar features the structure inspected, developing best practices future application, selecting a bridge detailed using non-destructive testing methods such as visual inspection, a...

In order to scale back the life cycle costs of an establishment from construction maintenance, it is very effective monitor structural health a structure. At present, maintenance and integrity checks on structure require personnel entry into normally inaccessible areas perform necessary non-destructive inspections. This paper discusses implementation budgeted, battery-powered based collision av...