The Principle and Significance of PT Testing in Non destructive Testing

Date：2023-06-14 15:44:38Views：632

Non Destructive Testing (NDT) refers to a modern testing technique that detects, judges, evaluates, and identifies possible defects or changes in performance without damaging the tested material or component. Among them, PT (Penetrant Testing) testing is an important non-destructive testing method. It uses the principle of surface tension to adsorb liquid surface tension agent solutes onto the surface of the specimen, and detects defects such as cracks and small pores on the surface of the specimen through color reaction. It has high sensitivity, high reliability, and is easy to operate.

The principle of Pt detection is to use the difference in thermal conductivity to detect internal defects in materials. The thermal conductivity coefficient refers to the rate of heat transfer when the surface temperature of a material changes. Under normal circumstances, the thermal conductivity coefficient is constant. But if there are defects inside the material, such as cracks, bubbles, etc., it can lead to changes in the thermal conductivity coefficient. Therefore, by measuring the changes in surface temperature of the material, it is possible to determine whether there are defects inside the material.

In Pt testing, a heater is used to heat the surface of the material, causing a change in its thermal conductivity. Then, by measuring the temperature difference between the heater and the material surface, the rate of change in thermal conductivity can be calculated. If there are defects inside the material, the rate of change in its thermal conductivity will be different. Therefore, by measuring the rate of change in thermal conductivity, it is possible to determine whether there are defects inside the material.

Pt testing plays an important role in non-destructive testing. It can detect whether there are defects, cracks, bubbles, etc. inside the material without damaging or changing the performance of the tested object. At the same time, Pt testing can also detect whether there are defects on the surface of materials, such as wear, scratches, etc.

The significance of Pt detection mainly manifests in the following aspects:

Improving product quality: Pt testing can timely detect internal and surface defects in materials, avoid further expansion of defects, and improve product quality and safety.

Reduce production costs: Pt testing can detect internal and surface defects in materials in advance, avoid product quality degradation and equipment damage caused by defects, and reduce production costs.

Improving production efficiency: Pt detection can be carried out without damaging or changing the performance of the detected object, improving production efficiency and reducing detection time.

PT testing technology has become an essential testing method in modern chemical production and aerospace manufacturing industries, and is of great significance in improving product quality and ensuring product safety. The above is the "non-destructive testing" related content brought about by this core breaking inspection. We hope it can be helpful to everyone, and we will bring more exciting content in the future. The company's testing services cover various testing projects, including electronic component testing and verification, IC authenticity identification, product design and material selection, failure analysis, functional testing, factory incoming material inspection, and tape weaving. Welcome to call Chuangxin Testing, we will be happy to serve you.