In Line Phased Array Inspection of Encapsulated Battery Structural Adhesives
Inline phased array testing maps structural adhesive wet-out and void formation through metal pack enclosures in real time at production line speeds.
Dynamic Focal Law
Meaning
Computational instruction sets for phased array systems adjust the timing of ultrasonic pulses to focus at multiple depths during a single scan. Implementing a dynamic focal law enables the inspection of thick components without the need for manual focus changes. This technique increases the probability of detecting small defects throughout the entire volume of a part.
Wave Control
Steering of the sound beam occurs by applying precisely timed delays to each element in a transducer array. The dynamic focal law calculates these delays on the fly to compensate for the distance between the sensor and the target area. This approach ensures that the energy remains concentrated where it is most needed.
Imaging Clarity
Resolution of the resulting scan depends on the density of the focal points used in the sequence. Because a dynamic focal law provides a sharp image across a wide range of depths, it reduces the blurring typically found in traditional fixed-focus methods. The software must process a large amount of data to reconstruct the image in real time.
This capability is important for checking the integrity of complex welds or layered composites in battery structures.
System Efficiency
Reduction in inspection time is the primary commercial benefit of this technology. Using a dynamic focal law replaces multiple traditional scans with one pass. The hardware must have sufficient processing power to handle the rapid switching of firing patterns.