Joint Fracture Patterns Can Reveal Vibration-Driven Movement in a Sensor Assembly

What the evidence preview establishes

The solder fractures were most likely caused by vibration fatigue arising from the combination of assembly design and the use environment.

Why this case matters

A solder fracture should be evaluated as part of its mechanical system. Map crack initiation and propagation across several joints, then relate displacement direction and joint restraint to vibration modes and structural design.