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.
ISO 22825
Meaning
International standard establishes the requirements for the ultrasonic testing of welds in materials with coarse grain structures. Using iso 22825 ensures that inspection techniques remain valid for complex metals like nickel alloys or austenitic steels. It specifies the necessary probe selection and calibration methods.
Probe Calibration
Setting the sensitivity of the equipment requires a reference block with known reflectors. Because the iso 22825 guidelines focus on anisotropic materials, the angle of the sound beam must be carefully adjusted. The standard requires that the test operator document the exact wave mode used during the procedure.
Inspection Procedure
Scanning plans must account for the high level of acoustic attenuation found in thick-walled welds. Adhering to iso 22825 involves using longitudinal waves or dual-element probes to overcome background noise. This method provides better penetration than traditional shear wave techniques in grainy structures.
The process requires overlapping scan paths to ensure full coverage of the heat-affected zone.
Quality Evidence
Reporting the results involves a detailed record of the ultrasonic parameters and the findings. Compliance with iso 22825 provides the end user with confidence in the structural integrity of the welded joint. The documentation must list every deviation from the standard scan plan.