Data encoding is the acquisition process which tracks the position of a sensor and assigns a position to the acquired data from a known reference point. This can be done using an encoded manually driven scanner or a fully automated and motorized scanner. Semi-automated inspection is the manually driven scanner where automated data acquisition is defined as the inspection process completed using a fully motorized scanner. Discover Versatility Redefined With Configurable NDT Scanners For Every Inspection Challenge.
In both scanner scenarios, all the inspection data is recorded at a selected increment of the scanning path.
There are many benefits in data encoding:
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Having the inspection data on disk opens a whole new world of possibilities. First, it provides sturdier traceability than a simple written report.
People other than the inspector can have access to the data which allows validating that the inspection has been carried out per the procedure and per the correct quality standards.
This is reassuring for the owner of the inspected asset. It is also beneficial for the inspection service company in many ways. First, the operator, if he is also the analyst, can ask the opinion of colleagues to make sure he takes the right call. But more importantly, saving the encoded data allows the service company to split the acquisition and analysis functions. The analyst can supervise the work of one or more operators, enabling much more efficiency for the company. Staff management is therefore more flexible.
Finally, for a recurring inspection program, it also allows historical data comparison. A non-critical flaw can be monitored overtime for growth. This is difficult to do with non-encoded inspections.
By adding automation, additional benefits can be unlocked. The fact that the probe is moved over the inspected area using a motorized scanner removes dependency on the operator. Once the scanner is installed on the components, every scan will generate the same data quality of data. The fact that the operator doesn’t need to manually operate the scanner allows accessing component regions which were either not accessible or only accessible with scaffolding. It also helps mitigate the health and safety risks when the component is in hazardous environments (e.g., radiation, elevation, chemicals, etc.).
Of course, there are some drawbacks in using heavier components. First, saving the data files means that you need a storage and archiving system. Nowadays, storage is not so expensive, but you need to be able to retrieve archived data when you need it. Also, the post-acquisition analysis process is in most cases more complex than the live sentencing. Fortunately, modern analysis software such as UltraVision® and Capture™ offer advanced tools to support the analyst in its work.
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The use of automated scanner can lead to more complex deployment. Eddyfi Technologies has mitigated this challenge by offering unmatched integration of all the components of the inspection solution, including the direct control of the motorized scanners from the instrument’s user interface.
The adoption of encoded data acquisition in non-destructive testing, particularly when paired with automated scanning mechanisms, represents a significant leap forward for the industry. By enhancing accuracy, repeatability, and traceability, encoded inspections provide a wealth of benefits for both inspectors and asset owners. Technicians can push the limits of their skills, focusing more on analysis rather than the manual execution of scans, while companies can optimize their workflow by separating data acquisition from data interpretation, improving overall efficiency.
For asset owners, the ability to access high-quality, recorded inspection data ensures greater confidence in the integrity of their equipment and infrastructure. This data-driven approach enables more informed decision-making, facilitates long-term asset monitoring, and allows for historical comparison to track flaw evolution over time—capabilities that are nearly impossible with traditional manual inspections.
Furthermore, automation reduces dependency on operator skill for consistent data collection, minimizes human error, and even enhances workplace safety by allowing inspections to be conducted in hazardous environments without unnecessary risks. While there are challenges, such as data storage and more complex post-acquisition analysis, modern software solutions help streamline these processes, making automated encoded inspections more accessible and practical.
Ultimately, as the NDT industry continues to evolve, the integration of encoded data acquisition and automation will become increasingly vital for achieving higher inspection standards, improving efficiency, and ensuring the long-term reliability of critical assets.
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Authors: Philippe Cyr, Patrick Tremblay.