Mechanical behavior of non-woven geotextiles studied by infrared thermography techniques

摘要

The knowledge of non-woven mechanical behavior is essential to control their draping or their resistance in use. Because their bending stiffness is low, it demands a specific extensometry, without contact not to disturb the measurement. Then, an optical method, combined with picture analysis techniques, is used to measure the strains. Moreover, the thermal cartography of the non-woven surface is taken in, during the test, using infrared thermography. The aim is to establish a link between phenomena occurring at the scale of the fibrous tangle on the one hand and the macroscopic behavior of the geotextile on the other hand.