Non-Destructive Testing
The field of non-destructive testing involves identifying and characterizing damage to the surface and interior of a material without cutting or otherwise altering the material. The test is a cost effective method of testing samples for individual investigations and can also be used on whole materials for production quality control system inspections. Non-destructive testing of materials can be used in many applications, including but not limited to manufacturing, storage tanks, aerospace, military and defense, nuclear industry, etc.
Non-destructive testing of alloys is a critical process used to ensure the quality, safety and reliability of components made from these materials. With a team of experienced professionals and state-of-the-art equipment, Alfa Chemistry is committed to providing accurate and efficient alloy non-destructive testing solutions for a wide range of industries. Whether you need to assess the quality of an alloy material or identify potential defects, we can provide you with a full range of services.
Our Testing Methods
There are a wide variety of different non-destructive testing methods available. These methods can be used to identify cracks, internal voids, surface cavities, delamination, incomplete defective welds and any type of flaw which would lead to premature failure. The testing methods we can provide include, but are not limited to the following.
- Ultrasonic Testing
Ultrasonic testing uses sound waves to detect defects or imperfections on the surface of an alloy. Most testing is done in the range 1-5MHz, but frequencies up to 100MHz and down to 20 kHz are also used in professional applications [1].
- Magnetic Particle Inspection
Magnetic particle inspection is a simple non-destructive testing method for detecting cracks in the surface of ferromagnetic materials such as steel and nickel-based alloys. The inspection process is as follows: First, a permanent magnet, electromagnet, flexible cable or handheld product is used to apply a magnetic field to the specimen, either locally or overall. Then fine ferromagnetic particles are applied to the surface of the specimen. If the specimen is defective, then a flux leakage field is generated in the magnetized component.
- Liquid Penetrant Testing
Liquid penetrant testing is one of the most widely used and cost-effective methods of non-destructive testing. It uses capillary forces to locate defects in material surfaces such as cracks, fractures and porosity. This test is typically used to detect defects in castings, forgings and welded parts.
- Radiographic Testing
Radiography testing is a non-destructive method that allows the inspection of many types of manufactured parts to verify the internal structure and integrity of the sample. The method uses X-ray, gamma-ray or neutron radiation to inspect materials internally. Due to its high reliability, radiographic testing has been widely used in the aerospace, transport, automotive, and manufacturing industries.
Figure 1. Magnetic particle inspection: (a) principles (b) cracks on the surface [2].
Figure 2. Radiography ability for detecting different types of defects and discontinuities in materials 3].
Our Advantages
- Expertise and Experience: Alfa Chemistry has a team of highly skilled and experienced professionals who have extensive knowledge and expertise in the field of non-destructive testing.
- Timely Delivery: Alfa Chemistry understands the importance of timely delivery and strives to ensure that customers receive their results in a timely manner.
- Quality Service: Alfa Chemistry is committed to providing the highest quality service to our customers. We have a team of professionals available to answer any questions or concerns our customers may have.
- Cost Reduction: Alfa Chemistry offers the most comprehensive services at the best prices to help our customers save money reasonably.
References
- Cawley P. Non-destructive testing-current capabilities and future directions. Proceedings of the Institution of Mechanical Engineers. Part L: Journal of Materials: Design and Applications. 2001, 215(4): 213-223.
- Mouritz, A. P. Nondestructive inspection and structural health monitoring of aerospace materials. Introduction to Aerospace Materials. 2012: 534-557.
- Nasrazadani, S.; Hassani, S. Modern analytical techniques in failure analysis of aerospace, chemical, and oil and gas industries. Handbook of materials failure analysis with case studies from the oil and gas industry. 2016: 39-54.