Non destructive Testing is one of the emerging technologies that has made life easier for mankind. The technology is divided into two categories, active and passive NDT. In the active type, NDT is performed to analyze a sample or component before actually applying any kind of damage to it. The passive type of NDT involves performing the test without actually damaging anything. However, both these methods are used for various purposes.
Non-destructive Testing is a group of inspection methods employed in the science and engineering field to assess the physical properties of a particular material, component, or process without causing damage to its internal structure. The methods include impact testing, eddy current testing, electromagnetic testing, thermal testing, strain gauging, and the like.
With this advanced and emerging technology, we can easily test different components, equipment, systems, etc to ensure its safety and quality parameters. The process involves several steps and hence needs a high level of skills.
This kind of inspection has been widely used across different industries such as automotive, military, power generation, petrochemical, pharmaceuticals, electronics, food and chemical industry, healthcare, communications, aerospace, and energy.
With the increasing demands for quality products in the market, all the manufacturers and suppliers are using non-destructive inspection techniques to ensure that their products and systems are free from any defects.
One of the main benefits of using this technique over the other inspection methods is that it is not affected by any kind of wear or tear, which may happen during usage or handling. This makes the process very durable and efficient. Moreover, the process can be carried out at various levels, which can be primary inspection, secondary inspection, and preventive maintenance inspection.
This new advanced technology was initially developed to avoid the chances of destructing the equipment or product. In this method of non-destructive testing, a small-sized metallic object is used which is subjected to high-frequency vibrations.
This vibration creates minute particles which are termed destructive. Once the device is destructed, there is no way by which the device can cause injury or damage to the person who may come in contact with it. Moreover, the process reduces the risks of physical explosion due to minute particles released during the operation.
Non-destructive testing methods involve different types of methods that help in determining the position and motion of the detected flaws. There are several techniques like magnetic particle testing, electromagnetic tomography, tensile testing, slip resistance testing, and other forms of vibration analysis.
Some of the well-known nondestructive testing software include cupped edge detection, applied weak electric field test, tensile strain gauge testing, magnetic particle analysis software, and image source inspection software. This image source inspection software uses the principle of non-magnetic energy and magnetic anomalies around the sample area for identifying defects.
There are different types of destructive testing methods that help in finding out various flaws in equipment. These are highly useful in various industries for detecting faults before they become very costly to repair. The major benefit of using non-destructive testing techniques is that the equipment is not damaged and a customer does not need to pay a heavy amount of money to dispose of the faulty product. The cost of such testing methods depends on the complexity and material of the product to be tested.
1: NDT or Non Destructive Testing
is a set of quality control and inspection techniques that are adopted by engineers to check the features of a product in a qualitative way. The quality control and inspection techniques are mainly adopted by the manufacturers, so as to maintain the efficiency of their production processes.
The defects are checked by the inspectors after which the equipment is passed through various tests such as nondestructive testing and quality control tests. These techniques are used for ensuring the functionality and efficiency of the products. Most of the products come with a list of features that need to be fulfilled for them to be deemed satisfactory and in line with international standards.
The techniques used in the NDT inspection include leak testing, visual inspection, and non-destructive testing. Leak Testing is the technique used to locate the defect before its entry into the production stream. The visual inspection helps in determining the type and location of the leak or flaw. The non-destructive testing checks for defects in the material or the structure before it causes any kind of physical damage.
The methods used in the quality control and the building inspection are very important for the purpose of NDT CODES AND STILLS inspections. The engineers adopt these two forms of non-destructive testing for checking the robustness and the safety of the product. Using drone photography for non-destructive testing has increased tremendously and the usage of drones has increased tremendously in the field of quality control. The usage of NDT CODES AND STILLS techniques makes it easier for engineers to identify the defects.
2: WHY USE NDT?
In order to ensure the highest standards of quality control, NDT is used on just about every material that is sent out to the offshore market. In many cases, it is the only way that inspectors are able to find quality control issues in materials that have been shipped. When inspectors rely so heavily on non-destructive testing they really cannot be fooled by a non-destructive testing facility using low-pressure or argon flash gases.
Inspectors rely on a variety of different methods including resistivity and tensile strength, thermal conductivity, and others to find quality control issues in a wide range of different products that are sent off-site for global distribution.
NDT is the only method of testing that can detect even the smallest amount of incurring a defect and then determining whether the defect is part of the way the material is made and/or if it can be fixed. If something can’t be fixed then it can’t be shipped globally or domestically.
Inspectors now commonly use NDT in their inspection activities worldwide. Countries such as the United States of America have a very large industry based upon the inspection of shipping supplies and/or consumer goods. As technology has evolved and improved non-destructive testing techniques have become standard in all kinds of inspection and quality assurance.
For example, non-destructive testing has become extremely important in the food and beverage industry. In this industry, quality inspectors have been using NDT for years in the production of new and existing packaging for freshness, safety, and integrity.
As we can see NDT Testing methods are vital for inspectors worldwide. As we move into the future with technology and innovation inspectors and manufacturers will need to utilize more advanced NDT methods and techniques. As our world’s trade centers around the world more items will be able to be packed with the ever-progressing and ever-improving Nondestructive Testing procedures. It is well worth the small investment to protect yourself, your business, and your customers against product quality issues. Keep safe and NDT on.
The 8 Most Common NDT Methods
Non Destructive Testing (NDT) in the industrial sector has become very important in these days of increasing and unforgiving economic scenarios. The method basically involves testing a product against known specifications and failing the product if any flaw is detected, which basically means the product has to be re-created under the same conditions from the time it was tested.
This testing is generally carried out by quality assurance officers (QAO) who are professionals employed by companies to ensure that quality parameters are met and remain intact for the duration of manufacturing. The methods are highly technical and extremely complex in nature thus manufacturers require them to be tested thoroughly to avoid any sort of defect in the products.
The first on the list of most common and widely used NDT methods in the Non-Destructive Testing (NDT). The testing of a product against its theoretical specifications and/or theoretical predictions is carried out using techniques like magnetic testing, nondestructive testing, or non-destructive testing analysis.
This analysis is performed in order to determine if there are any imperfections in the design of the product. In addition, this method also determines if the product has structural or mechanical issues that could affect its capability of performing as per the given set of specifications and standards.
The third on the list is ultrasonic testing, which is also known as ultrasonic inspection. The QAO inspectors perform this kind of inspection while the inspectors from other firms or personnel perform the non-destructive testing.
The inspectors use ultrasonic sounds and waves to identify any flaws in the materials they are inspecting. The QAO and other professionals use ultrasonic testing to identify the imperfections without actually having to damage the material they are inspecting.
Where Is Non-Destructive Testing Used?
Non Destructive Testing is a very interesting branch of Engineering, which lets us know where stuff comes from without destroying stuff. As I understand it Non-Destructive Testing NDT is used in many places like; structural analysis, fault injection, turbidity testing, dynamic response, and also dimensional stability analysis (which I think is a pretty cool name there).
What is more interesting about NDT is that the machines don’t need to destroy anything they find. Well that’s a scary thought, isn’t it? Well, as you might have guessed robots are becoming intelligent and could one day do the jobs humans do with little or no human input.
So where is non Destructive Testing used? In most cases of structural analysis where structural integrity is being sought after NDT is utilized where there is an assumption of increasing temperatures, which could lead to buckling of the beams.
Apart from this, the inspection of joints and voids could be easily accomplished with the use of sensors and imaging systems and the machine could simply move on without causing any damage.
So where is non Destructive Testing used? Well, for dimensional stability analysis, which we talked about earlier the machine would basically rotate and would use robotic arms to drill into the voids of the durations, essentially looking for buckling or failure. This is a good example of where is non Destructive Testing is being used? Which is another way of asking the question, where is non Destructive Testing used?
Another area is for the purpose of leak testing where inspectors would use robots to go in and look for damage to steel pipes or tanks. Again inspectors would not destroy anything, they only look for the presence of damage.
If this is an area where you would require human intervention then you have to call in a Non-Destructive Testing company. But do bear in mind that many countries have legislation which states inspectors cannot access places if there is damage, but in the UK there is a bit of an exemption.
An interesting area is where is non-destructive testing used? There are some very interesting uses for EDI or Electric Detection and Ranging, which is basically a form of Non-Destructive Testing. Basically, an electric current will be shot into an area where there is potential for leakage. The EDI inspectors will look for cracks in welded areas where metal is moving due to temperature changes or maybe liquid movement.
Some interesting places where is non-destructive testing used is where there is the possibility of an oil leak. If there is a leak then an EDI inspection team will go and set up a probe which will then detect any movement in the oil. But the interesting thing about oil leaks is that once you’ve detected the leak – does it start leaking again as soon as it’s found? Well, this is where is non-destructive testing used.
Another use for Nondestructive Testing is where an earthquake is occurring or has just occurred. When an earthquake occurs people want to know if the damage was caused directly to the building or was caused by a secondary event that was more significant. The key here is to locate the point at which the earthquake occurred, but how do you know if it’s stable or not? Well, here is where non-destructive testing comes in again, usually these sorts of tests aren’t done manually but electronically.
This type of inspection is normally done on things like bridges, iron ore processing plants, power generation facilities, ships, construction machinery, and the like. So, if you need to know where is the non-destructive testing used – remember to look for an ‘EDI’ sign. An EDI is an electronic discharge appliance that is used to identify the root cause of any defect or other abnormal behavior.
The great thing about non-destructive testing is that you can carry it out on your own without having to rely on a third party, so don’t rule out the idea of carrying out Nondestructive Testing yourself.
How Drones Can Help with NDT
How Drones Can Help with NDT is a question that is being asked frequently by my fellow pilots in the UAV industry. To date, we have not found any aerial vehicles that can do all of the required work in one mission. As outdone program’s progress, we will likely see this technology applied in a wide variety of ways, perhaps even across different types of aircraft.
As this type of unmanned aerial vehicle (UUV) gains more useful information from flight tests and other trials, it will continue to evolve and become increasingly capable. While future UAVs may be capable of performing multiple roles and doing multiple tasks, as currently envisioned, they will first have to get the necessary start-up kit and be fully functional in order to take on an array of non-manual tasks.
How Drones Can Help with NDT is a matter of combining existing autonomous operation systems, data from the NDT test platform, and the increased flight speed, endurance, and the ability to operate in difficult and dangerous terrain to create an autonomous system that can autonomously assess potential hazards and take appropriate corrective action, like avoidance of collision or high-speed winds, for example.
We must also consider whether such a system could make the safer use of UAVs in high-risk areas like the Indian Ocean for search-and-rescue operations. Such a system would be extremely valuable as more lives are lost every day in the line of duty involving UAVs or other autonomous aerial vehicles, which often involves very tall and rugged machinery, exposed to the weather and adverse conditions.
Perhaps what is most interesting about how Drones can help with NDT is the use of NDT in non-destructive testing. While we are just beginning to apply NDT to UAV testing, there are already several uses for non-destructive testing in UAV testing.
These include the military’s UAV Future Force Strategies, which calls for the employment of NDT techniques in combat. Other potential applications include unmanned surveillance and reconnaissance, such as remote sensing, where using UAVs to observe and monitor or locate events and locations will have a measurable impact on the success of combat missions.