Nondestructive Analysis of Automotive Components

significance:

NDT is a non-continuous process (such as multi-step production) or a continuous process (such as automated production lines) of raw materials, semi-finished products, finished products and product components provide real-time process quality control, especially the control of metallurgical quality and production process quality materials such defect, the state organization, the coating thickness monitoring, etc., while the quality of the information by detecting the information received can be fed back to the design and technology department, prompting further improve the design and manufacturing process to improve product quality, reduce waste received and rework, thereby reducing manufacturing costs and improve production efficiency.

Test purposes:

1. To ensure the quality of products

2. Secure security

3. To improve manufacturing processes and reduce production costs

Test items:

CT scan test

X-Ray fluoroscopy test

C-Sam Scan Test

Magnetic Particle Testing

Penetration flaw detection

Eddy Current Testing

Glossary:

CT scan: Industrial CT is developed on the basis of the detected radiation, the basic principle is that when energy I0 through the collimator ray beam passes through the subject matter, the attenuation coefficient of each volume element of the transmission from different directions , detector receives the transmitted energy I may also differ. According to certain image reconstruction algorithm, can be obtained by tomography artifacts seized a thin cross-sectional images without overlapping, repeat the process and get a new tomographic image, when enough of the measured two-dimensional tomographic image reconstruction can a three-dimensional image. It can detect objects without damage to the conditions, in the form of two-dimensional tomographic image or a three-dimensional image, clear, accurate, intuitive display the internal structure of the object to be detected, composition, material and defect condition, known as today's best non-destructive testing and non-destructive evaluation techniques.

Ultrasonic (C-Sam) test: when the ultrasonic wave propagation in the material being examined, based on the acoustic properties of the impact of defects in the material displayed on the ultrasonic wave propagation method to detect defects therein. Usually with an ultrasonic inspection of internal defects and surface defects.

X-ray examination: X-ray radiation and other non-destructive testing methods for internal defects in metal.

Magnetic particle inspection: the use of magnetic flux leakage and a suitable test media discontinuities found nondestructive testing methods specimen surface and near surface.

Penetrant inspection: By applying penetrant to remove unnecessary parts of detergent, and then applying a developer to obtain an opening on the part of the surface defects show.

Eddy current testing: eddy current in the specimen, specimen analysis NDT methods in quality conditions.

Ultrasonic inspection and radiographic inspection is the most widely used detection method, when applied to the internal defect inspection for surface inspection, magnetic particle inspection the main application, as long as the ferromagnetic material will preferably magnetic particle inspection.

On industrial ultrasonic inspection of metal based, it can also be used for other test objects; objects ray inspection is very broad, mainly metal; magnetic particle inspection can only be applied to a ferromagnetic material; penetration test can be used for both metals to be for non-metallic materials; eddy current test can only be applied to an electrically conductive material.