Thermographic stress analysis through mechanical excitation
Mechanical loads produce tiny temperature changes in components that can be made visible with infrared cameras. This method reveals stress potential and danger points.
Physical-Chemical Mechanism of Action
Mechanical excitation such as vibrations or pressure changes causes microscopic deformations in the materials. These deformations lead to local temperature differences, as the material structure and stresses convert energy.
Metallurgical Relevance & Risks in Welding
Thermographic stress analysis shows where components are particularly stressed. Excessive stress potentials can lead to cracks, wear, or corrosion. In the weld seam, this can cause hot cracks or uneven cooling.
Workshop Practice & Instructions
Use infrared cameras to capture temperature distributions during mechanical excitation. Analyze the images for bright or dark areas, which are indicators of high stress. Make sure the components are measured in the same condition and under the same loads as in the workshop. Use this data to optimize the welding process and reduce risks.