Mechanical apparatus and method of testing to study the fissured fatigue of materials for roads.

摘要

The test apparatus MECHANICAL comprises a frame (1) including a socket (2) provided with housings (9, 10) for receiving a test tube (11) GENERALLY ELONGATED, and a portico (6) CARRIER means (13 15) solicitation the sample (11), means (13 to 15) solicitation includes a shaft (15) for transmitting to the specimen (11) EFFORTS OF sOLICITATION perpendicular to the longitudinal axis of the sample (11) . The shaft (15) may be provided with a head (16) formed so that it can TRANSFORMATION EFFORTS IN EFFORTS SHEAR SOLICITATION. BESIDES the test apparatus includes means MECHANICAL MEASUREMENTS OF EFFORTS Solicitation well as a means for measuring the progression of a crack front.