Total-range lubricating film thickness ultrasonic detection device and method

• Main Authors: WANG GAOFEI, ZHANG KAI, FENG KAI, WU TONGHAI, DOU PAN
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2017
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The present invention discloses a total-range lubricating film thickness ultrasonic detection device and method. Amplitude values and phase values of the sound pressure reflection coefficients of ultrasonic waves on a lubricating layer are employed to perform measurement precision complementation of the lubricating films with different ranges, and aiming at the lubricating films with different thickness ranges, the amplitude values and phase values of the sound pressure reflection coefficients of the ultrasonic waves on the lubricating layer are employed to obtain the accurate value of each range lubricating film thickness. The total-range lubricating film thickness ultrasonic detection device and method can realize accurate measurement of the total-range lubricating film thickness through an ultrasonic sensor with single center frequency and can provide convenience for online monitoring of a tribology element lubrication state. 本发明公开了种全范围润滑膜厚度超声检测装置和方法，利用超声波在润滑层上声压反射系数的幅值谱和相位谱对不同范围润滑膜测量精度互补的特点，针对不同厚度范围的润滑膜，分