METHOD OF DETERMINING EXTENSION IN ONE DIRECTION IN AN OBJECT BY MEANS OF AN EXTENSOMETER, THE APPLICATION THEREOF, AND SUITABLE EXTENSOMETERS

摘要

The present invention relates to a kind of one Directional Extensions of determination, and in object (12), by extensometer tool, there are two branch (3). Two arms are connected at one end to hinge (7), could be moved in plane, the other end is connected to object (12), and limbs (3) is made to be urged apart extension. According to the present invention, extension alignment is branch (3) between the other end of the object (12) on a substantially parallel surface. The present invention is further directed to the application of this method, such as carries out the process in object (12) and extensometer for monitoring crack (13). The extensometer is preferably that capacitor extensometer tool is generally parallel configured there are two condenser armature (1,2), has a condenser armature (1,2), each limbs (3). The capacitor system by measure that the capacitor of the extension determines is formed by condenser armature (1,2).