2024年3月1日 · In this study, we propose a nondestructive testing (NDT) method based on ultrasonic feature guided waves (FGWs) for the evaluation of local corrosion-induced wall thinning in L -shaped bends.

2023年7月18日 · This study presents the implementation of an ultrasonic technique capable of detecting and classifying wall thinning and concentrated defects using high-order guided wave modes. The technique is based on a proposed phase velocity mapping approach, which generates a set of isolated wave modes within a specified phase velocity range.

2024年1月23日 · The effects of boosting velocity and friction on the outer wall thickness of the tube are studied. Results show that frictional force generated by the boost and the material compensation effect combines to resist the outer wall thinning during the bending process.

2023年1月1日 · Oxidation and distortion within pipes can sometimes be caused by external variables such as moisture or ground pressure. Risks such as fractures that might emerge in the pipe’s wall should be regularly monitored to avoid possible financial losses, chemical spills, and deadly accidents.

2018年12月15日 · When a pipe is bent, wall thickness of the pipe tends to decrease on the outer side of the bending. When a pipe is not bent properly, it leads to excess wall thinning. Wall thickness is the main criteria that govern the strength of a pipe, because whenever a high-pressure fluid flows through the bend it should withstand the pressure.

2019年4月12日 · Pipe wall thinning and leakage due to flow accelerated corrosion (FAC) are important safety concerns for nuclear power plants. A shear horizontal ultrasonic pitch/catch technique was developed for the accurate monitoring of the pipe wall-thickness.

Abstract: Pipe wall-thinning is a phenomenon in which materials, water chemistry, and thermal fluids work together to make the thickness of pipes thinner, which damages various industrial facilities. If a pipe with pipe wall-thinning is left unattended, it can lead to pipe rupture.

2017年7月3日 · Wall thinning, as opposed to wall thickening, is an issue tube-benders take particular notice of, because many bend applications require a minimum wall thickness in the finished product. Many factors play a role in determining how much a wall will thin, not the least of which is the set-up.

Local wall-thinning due to flow accelerated corrosion (FAC) is now considered to be a main degradation mechnism of carbon steel piping components in nuclear power plants (NPPs) (Deardorff and Bush, 1990;

Few studies have given a theoretical analysis to explain the relationship between the features and the thickness. In this article, the decay process of eddy current response to a ferromagnetic casing is analyzed qualitatively, and a concise expression of the decay rate is derived.