Steel fracture analysis and detection

Steel fracture analysis and detection

Steel fracture is a common engineering problem that not only leads to the failure and destruction of structures, but also brings huge economic losses and safety risks. Therefore, it is particularly important to analyze and detect steel fractures. This article will provide a detailed description of the common causes of steel fractures, detection methods, and preventive measures.

1. Common causes of steel fracture.

The main causes of steel fracture can be divided into two main categories: one is due to external loads, and the other is due to defects in the material itself or environmental factors.

1.Fracture caused by external loads.

Steel fractures caused by external loads mainly occur when the stress experienced by the structure exceeds its yield limit. For example, large structures such as bridges and high-rise buildings may experience fatigue cracks when they are subjected to external loads such as wind, snow, and vehicles for a long time, which can lead to fractures. In addition, excessive plastic deformation, external impact, **, etc. can also cause steel breakage.

2.Fracture caused by defects in the material itself or environmental factors.

The steel itself may have defects such as porosity, slag inclusions, cracks, etc., which can propagate under the action of stress concentrations and eventually lead to fracture. In addition, environmental factors such as temperature changes, corrosive media, etc., can also affect the properties of the steel, making it prone to fracture. For example, steel that has been exposed to moisture for long periods of time is susceptible to corrosion, which can lead to a decrease in its load-bearing capacity and eventually fracture.

2. Detection method of steel fracture.

There are many ways to detect steel fracture, and here are a few commonly used ones.

1.Visual inspection.

Visual inspection is the most basic inspection method, which observes the appearance of steel to check whether it has cracks, deformation, corrosion, etc. This method, while simple, is very effective for finding some obvious flaws.

2.Ultrasonic testing.

Ultrasonic testing is a non-destructive testing method that uses the speed at which ultrasonic waves propagate through steel and the signal reflected back to determine whether there are defects inside the steel. This method can detect defects such as cracks and slag inclusions inside the steel with high accuracy.