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Article of the Month:
Thermography Detection of Previous Water Intrusion
Prof. Kenneth Ripberger
Department Chair Delgado Community College
Level 1 Certified Infrared Thermographer KR Services
840 Helios Avenue, New Orleans, LA 70005Ph: 504-328-4152 firstname.lastname@example.org
Infrared thermography is well suited for the detection of wet surfaces during rain and also residual moisture in porous materials for only about 24 to 48 hours afterward the event, if exposed to air. This is because of temperature anomalies while drying due to evaporation.
In 2005, Hurricane Katrina flood water stayed for weeks in places where water should never be. Yet, most city inhabitants were able to return in no less than a few weeks after their areas were accessible. During this wait there was no rain, and everything dried quickly. So, when I was asked to evaluate structures to help determine the extent of water damage with infrared imaging, I suspected that most materials had long been dried, and the effort would likely yield no thermal anomalies consistent with latent moisture.
In many cases that was true, but to my surprise, in some situations the evidence was still apparent. I must have made a good choice of equipment. Long after flood/roof leak damage, modern IR imagers are so sensitive that they can show past events, due to some surface material E-factor change from chemical changes, regardless of uniform temperature. This retains a permanent record, like the "Carfacts" of a vehicle.
This paper will discuss the use of thermography to locate previous water damage to structures and defects within same, as well as the effects of substrate type and deterioration on the infrared measured surface.
Keysight Technologies Introduces Thermal Imagers for Predictive Maintenance
IKeysight Technologies, Inc. (NYSE: KEYS) today announcedthe addition of two higher temperature models to its thermal imagers’ portfolio. The U5856A and U5857A can perform temperature measurements up to 650 degrees C and 1200 degrees C respectively.
Thermal image shows thermal pattern around human eye. Crisp imagery and well-defined thermal contrast show capabilities of some modern thermal imagers. Taken by Stephen Moore, this thermal image was the 1st Place winner - Open Category in the annual Image Contest held during the IR/INFO 2015 Conference.