How to Conduct Pre-shipment Safety Inspections

The detection of exterior wall plastering or cladding primarily involves hollowing, cracks, and peeling. In cases where potential peeling hazards are identified in the exterior wall, a common detection method is the combination of an infrared thermal imaging camera and a hollow hammer.

Principle of Infrared Thermal Imaging: Primarily involves the collection and conversion of temperature signals (infrared light signals) emitted by the measured object. The paint, mortar, and wall tiles may cause some air layers to form. The sealed air layer has a high resistance, thus the thermal conductivity of the delamination layer between the outer wall surface and the main body is relatively low.

Generally, the temperature at hollow spots is higher than at other locations when there is more sunlight or the temperature rises; conversely, the temperature at hollow spots is lower than at other locations when sunlight decreases or the temperature falls.

Additionally, in cases where sunlight does not uniformly illuminate the wall, the unilluminated areas are factors affecting the accuracy of the detection. Such unilluminated walls require the use of traditional tapping hammers for辅助 detection.