Non-destructive Testing Techniques for Stress Analysis of Pressure Vessels

Abstract

Pressure vessels are critical industrial equipment used to store and transport high-pressure fluids or gases, and ensuring their safety is of utmost importance. Stress analysis is a crucial step in assessing the integrity of a vessel's structure to ensure it can withstand high-pressure conditions without failure. Nondestructive testing is important for stress analysis of pressure vessels. These technologies, such as ultrasonic, radiographic, and magnetic particle inspection, can detect potential cracks, corrosion, deformation, and other defects without causing damage to the container. Through regular non-destructive testing, operators can detect problems early and take measures to repair or replace equipment, thus avoiding potentially catastrophic accidents and production shutdowns. To effectively evaluate the working condition and remaining lifespan of a pressure vessel, stress analysis and non-destructive testing are required. By summarizing the basic principles and common methods of stress analysis for pressure vessels, this paper provides a systematic introduction to non-destructive testing technologies such as X-ray testing, ultrasonic testing, liquid penetration testing, and acoustic emission testing. It also discusses their specific applications in pressure vessels, analyzes the advantages and disadvantages of each technology, and examines their scope of application. It is hoped that this paper can promote the development of non-destructive testing technology for stress analysis of pressure vessels.