Transverse and longitudinal ultrasonic sensor for detecting axial pre-stress of bolt

• Main Authors: XU CHUNGUANG, SONG WENTAO, XIAO DINGGUO, PAN QINXUE, XU LANG, GUO JUN, LI XIAO, REN HUILING
• Format: Patent
• Language: Chinese; English
• Published: 09.01.2013
• Subjects: MEASURING; MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE; PHYSICS; TESTING

The invention relates to a transverse and longitudinal ultrasonic sensor for detecting axial pre-stress of a bolt. The ultrasonic sensor which is designed into a concentric ring nested structure and can excite transverse and longitudinal wave signals synchronously or asynchronously is provided to mainly solve the problem that a traditional ultrasonic sensor cannot excite the transverse and longitudinal wave signals synchronously or asynchronously and can be easily limited and affected by operation or test conditions of testing staff so as to cause inconsistency of thickness of a coupling layer and a relatively large measurement error; a magnet steel is arranged inside the sensor, so that the sensor can be conveniently absorbed on any ferromagnetic part to be tested, operations can be simplified, the stability of the thickness of the coupling layer can be guaranteed, and the measurement error can be reduced, therefore, the transverse and longitudinal ultrasonic sensor can be widely applied to the application f