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What is the principle of infrared thermography?

By John Johnson

What is the principle of infrared thermography?

The principle of infrared thermography is based on the physical phenomenon that any body of a temperature above absolute zero (-273.15 °C) emits electromagnetic radiation. There is clear correlation between the surface of a body and the intensity and spectral composition of its emitted radiation.

What is thermography in construction?

Thermography measures surface temperatures by using infrared video and still cameras. Also, it is harder to detect temperature differences on the outside surface of the building during windy weather. Because of this difficulty, interior surveys are generally more accurate because they benefit from reduced air movement.

Does thermal imaging work through concrete?

When conducting a thermal inspection with concrete, angle to the floor is very important. When used correctly, thermal imaging inspection saves time and money, avoids unnecessary destructive damage and authenticates accuracy and successful job completion to your customer—a priceless benefit when working with concrete.

What are the two main types of infrared thermography?

There are two basic types of thermography; passive thermography and active thermography.

What are the advantages of infrared thermography?

The main advantage of infrared thermography over the destructive testing techniques is that large areas can be scanned fast and with no need to be destroyed during testing. This results in major savings in time, people, work and machinery.

What are the advantages of thermography?

Benefits of Medical Thermography

  • It is simple.
  • It is 100% Safe.
  • No Radiation!
  • It is painless.
  • It is inexpensive (compared to other diagnostic imaging procedures).
  • It is effective for men, women and children.
  • Thermography is ideal for PREVENTIVE medicine.
  • It is the ideal tool for Early Health Screening.

Why do we need thermography?

Thermography is a non-destructive test method that may be used to detect poor connections, unbalanced loads, deteriorated insulation, or other potential problems in energized electrical components.

What does an infrared inspection do?

Infrared (thermal imaging) is an advanced, non-invasive technology that allows the inspector to show clients things about their homes or buildings that can’t be revealed using conventional inspection methods. Ancillary inspection reports are just as important as the reports generated for standard inspections.

Is there a camera that can see through concrete?

Can thermal imaging see through concrete? The answer to this question is basically the same as the question for walls—no, but a thermal camera might be able to detect something inside the concrete like a pipe or radiant heating that causes a temperature difference on the surface of the concrete.

Can thermal imaging detect leaks?

Thermography cameras can identify problem areas that cannot be seen with the naked eye, detecting hidden water leaks. The infrared inspection camera can detect not only hidden water leaks and their origin, but also moisture that cannot be physically reached with moisture meters.

What are the applications of thermography?

There is a wide range of applications in military, industrial, civil engineering and medical fields [1], [2]. It can be used to investigate a very broad range of situations where variation in surface temperature may indicate a problem in or a particular property of the material(s) below the surface.

What are the advantages and disadvantages of infrared thermography?

Advantages and Disadvantages of Infrared Thermography

  • No need to take the electrical installation out of service since it can be used during normal operating conditions.
  • It is a non-contact and a non-destructive test method, used from a safe distance.