Which inspection technique can uncover issues that are not visible?

Thermal scanning is a highly effective inspection technique for identifying problems that are not readily visible to the naked eye. This technique employs infrared cameras to detect variations in temperature across surfaces. Many hidden issues, such as moisture intrusion, electrical hotspots, or insulation deficiencies, can result in abnormal temperature readings. By analyzing these thermal patterns, inspectors can reveal underlying problems that might not be apparent through visual inspections alone. This capability makes thermal scanning an invaluable tool for thorough assessments and for uncovering potentially serious issues before they escalate.

Visual assessments rely on seeing flaws directly, while auditory techniques focus on sounds that may indicate problems, such as leaks or structural issues. Standard photographic reviews limit findings to what can be captured in photos, usually resulting in missed problems that do not manifest visually. Therefore, thermal scanning stands out as the most effective choice for revealing hidden issues.