Fracture

Vibration-Fatigue Fracture

A lead-to-solder interface fracture revealed after metallurgical etch treatment, useful for distinguishing fatigue from poor solder-process execution.

Scale Not stated in caption
Observed feature Fracture at the lead/solder interface after etch treatment
Likely mechanism Vibration-fatigue fracture at the lead/solder interface
Lead to solder interface fatigue fracture

Interpretation

Why this image matters

This is a useful reference image for fatigue because the fracture location is specific and the report context ruled out solder-process or component-lead quality as the primary cause.

The report concluded that the failure was due to vibration fatigue and that elevated vibration or resonance during testing was the likely driver.

That makes the image especially helpful when someone is trying to separate a true service- or test-induced fatigue mechanism from a workmanship explanation.

fracture vibration-fatigue solder-joint lead-interface
Use this when

Best comparison value

  • Discussing vibration-induced solder-joint fatigue
  • Separating fatigue from solder workmanship problems
  • Teaching interface-specific fracture location