NDT EquipmentNDT Equipment: A Lifesaver In Many Sectors
（This is the surface roughness tester from ipre）
NDT (nondestructive testing) equipment allows technicians to test or measure the properties of a material without damaging it. While this sounds like a fairly simple idea, NDT equipment is often highly sophisticated, and the materials measured by NDT often perform critical roles in construction, aerospace, the oil and gas industries, and more. In contrast to medical equipment, NDT equipment does not directly save lives; however, it does so indirectly by alerting technicians to failures and potential failures in materials.
Everyday NDT—How Nondestructive Testing Creates A Safer World
Types of NDT Technology
While this list is not exhaustive, here are several notable NDT technologies, how they work, and what they’re used for.
Roughness tester and surface roughness, surface roughness tester, roughness tester, roughness measuring instrument, roughness meter, roughness tester and other names. It has high measurement precision, wide measurement range, simple operation, easy to carry, stable work, etc, can be widely used in all kinds of metal and non-metal processing on the surface of the test, the instrument of the integration of sensor host is pocket instrument, have the characteristics of hand-held, more suitable for field use in production
(this is the ipre ultrasonic coating thickness gauge in testing the pipeline)
Ultrasonic testing has a wide range of applications in numerous industries. The underlying principle of this technique is simple: as ultrasonic sound waves are propagated through a test piece, they reflect back to the test device with various distortions. The device measures these results and determines flaws in the material which would otherwise remain invisible.
Hardness testing measures how much a material resists indentation. Common hardness testing methods include Rockwell, Brinell, Vickers, and Knoop. Different methods are used for materials with different hardness testers. For example, material with a rough surface requires a larger indenter and a heavier load to even out the surface irregularities, while smooth materials can be tested with smaller indenters and lighter loads.
Intrinsically Safe and Explosion-Proof
Did you know that consumer electronic devices may create small sparks inside during normal operation? Or that these devices may not be completely sealed from the outside environment? Hence the need for intrinsically safe and explosion-proof equipment. This sophisticated technology allows operators to take measurements and photos in extremely dangerous conditions. With their sealed design and non-sparking operation, these tools are safe to use in explosive areas.
Magnetic Particle Inspection
Magnetic particle inspection is used to detect irregularities inside and outside test pieces that are made of ferromagnetic material. Inspection is performed with either movable or stationary test equipment, depending on the size and mobility of the test piece. The test piece is magnetized, either by having a current passed through it, or by having an external magnetic field applied to it. Then ferromagnetic particles (either dry or in suspension) are applied to the test piece. Discontinuities in the resulting visual field indicate irregularities in the test piece.
A Brief History of NDT
Nondestructive testing is a fairly broad concept, and as such, it was doubtless practiced crudely without a name for millennia. However, the explosive growth of technology in the 18th, 19th, and 20th centuries first introduced the need for more sophisticated kinds of nondestructive testing.
According to the American Welding Society, flour and oil were used in Roman times to detect cracks in marble. This technique is the forerunner to modern penetrant inspection, which uses a substance that lights up under UV radiation to show cracks in materials.
Wilhelm Conrad Röntgen first discovered X-rays in 1895. The application of X-rays to the medical field was immediately recognized, but it was not until the 1930s that X-ray inspection was applied to industrial manufacturing.
From the 1930s on, nondestructive testing methods grew exponentially. The ’30s saw the introduction of radioactive isotope testing for welds, as well as the founding of the Magnaflux corporation. Ultrasonic flaw detection was patented in 1942, while thermal imaging was developed in the 1950s and 60s as a military technology.
Today, numerous technologies fall under the banner of NDT. Modern NDT equipment is incredibly sophisticated and specialized. NDT ensures greater safety to workers and the public in numerous sectors, including the oil and gas industries, aerospace, construction, and welding.