The Best Non Destructive Testing (NDT) for the Aviation Industry

As we all know that the sound range for human hearing ranges from 20Hz – 20 KHz. The frequency of this ultrasonic wave range can be accepted by all human senses. Ultrasonic waves less than 20Hz or above 20Khz cannot be heard by the human sense of hearing, but ultrasonic waves outside the 20Hz – 20 KHz range are useful for humans to detect damage in industrial fields, one of which is the aviation industry. Ultrasonic waves can be directed by Sonatest at materials to detect hidden defects that cannot be observed by aircraft technicians.

Aircraft technicians are experts in inspecting aircraft conditions. The technician must also understand the performance of ultrasonic waves when it is used in Non-Destructive Testing (NDT). In theory, ultrasonic waves will move in a straight line through the material until they meet another surface of the medium such as air, causing it to bounce off. Through Sonatest, ultrasonic wave reflections can be measured and used to find damage such as cracks in aircraft material.

Ultrasonic is the most effective and efficient NDT method. This test is often used to find damage that requires sensitive investigation of the fuselage. NDT with ultrasonic waves is able to provide a pressure far below the elastic limit of the material and does not pose a danger of damage. An inspector can perform the NDT method from Sonatest to find out the damage to various materials such as metal, composites, plastics, ceramics, wood, paper, etc.

Ultrasonic testing with Sonatest allows inspectors to inspect difficult areas of the aircraft without having to dismantle structures. Ultrasonic testing is widely used to detect small cracks that are difficult to detect by other methods. This technique is also used to detect thinning of the layer due to corrosion on the inner skin surface. It is true, that more than 80% of periodic inspections on aircraft use a visual method, the inspector removes the interior in order to see its condition visually, but the visual method still has limitations. So, the NDT plays an important role in thoroughly inspecting the aircraft.

The NDT inspection method requires professionals who can be trained through Sonatest. The NDT method must be run by trained people who understand Ultrasonic testing to get accurate results about the condition of the aircraft during the inspection period.

Trained inspectors will be able to understand complex geometries and recalibrate different equipment on the aircraft before interpretation. The wrong interpretation will cause disaster to the company and threaten the safety of passengers. NDT with ultrasonic testing can detect corrosion caused by small things beyond our knowledge. When the plane landed, then the beautiful flight attendant opened the plane door, the small gaps in the inside of the plane were often filled with warm water vapour. When the aeroplane flies and reaches a certain height, the skin of the plane becomes very cold. This causes water vapour to condense on the inner surface of the skin. Water will collect at the bottom of the aircraft and become electrolytes which lead to corrosion. So, if corrosion cannot be detected, it will reduce the quality of the aircraft. However, all of these will be detected easily through ultrasonic testing carried out by the NDT inspector.

The NDT Inspector’s job is to find all component defects on the aircraft before they exceed tolerances and cause major problems. Now, as you can see, Ultrasonic NDT provides many benefits for the continuity of the aviation industry. Investing in Sonatest to perform ultrasonic testing is highly recommended as it is very useful for analysis, safety, and money-saving in the industry.