US 11,680,857 B2
Ultrasonic test device and test method for service stress of a moving mechanical component
Chunguang Xu, Beijing (CN); Shuangyi Li, Beijing (CN); Yuren Lu, Beijing (CN); Peng Yin, Beijing (CN); Dezhi Li, Beijing (CN); and Wenyuan Song, Beijing (CN)
Assigned to BEIJING INSTITUTE OF TECHNOLOGY, Beijing (CN)
Filed by BEIJING INSTITUTE OF TECHNOLOGY, Beijing (CN)
Filed on May 26, 2021, as Appl. No. 17/331,045.
Claims priority of application No. 202010536050.7 (CN), filed on Jun. 12, 2020.
Prior Publication US 2021/0389195 A1, Dec. 16, 2021
Int. Cl. G01L 1/25 (2006.01); G01L 5/00 (2006.01); G01N 29/275 (2006.01); G01N 29/28 (2006.01); G01N 29/30 (2006.01); G01N 29/22 (2006.01); G01N 29/07 (2006.01)
CPC G01L 1/255 (2013.01) [G01L 5/0047 (2013.01); G01L 5/0066 (2013.01); G01N 29/275 (2013.01); G01N 29/28 (2013.01); G01N 29/30 (2013.01); G01N 29/07 (2013.01); G01N 29/225 (2013.01); G01N 2291/101 (2013.01); G01N 2291/2623 (2013.01); G01N 2291/2626 (2013.01); G01N 2291/2634 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A system including a moving mechanical component, a reference zero-stress test block configured for a zero-stress calibration, and a calibrated ultrasonic test device for inspecting service stress of an inspected component of the moving mechanical component at an inspection position, said ultrasonic test device comprising:
an ultrasonic probe configured to emit ultrasonic waves at least once and collect ultrasonic echo waves;
a temperature controlled and pressurized coupling fluid;
a temperature sensor configured to record a calibration temperature of the coupling fluid during the zero-stress calibration with the reference zero-stress block;
a pressure sensor configured to record a calibration pressure of the coupling fluid during the zero-stress calibration with the reference zero-stress block;
a pressure-maintaining cover; and
universal wheels, wherein:
the reference zero-stress test block is an annealed reference zero-stress test block whereby internal stress has been removed, said reference zero-stress test block including the same material, surface roughness and curvature as the inspection position of the moving mechanic component;
the pressure maintaining cover is vertically arranged above the inspection position of the inspected component, an interior of the pressure-maintaining cover is filled with the coupling fluid, a bottom of the pressure maintaining cover is provided with a structure permeable to the coupling fluid to form a coupling fluid film between the inspection position and the bottom of the pressure-maintaining cover, at least three of the universal wheels are arranged on an outer wall of the pressure maintaining cover, and a top of the pressure-maintaining cover is equipped with the ultrasonic probe;
a detection portion at a lower part of the ultrasonic probe is configured to extend into the pressurized coupling fluid of the pressure-maintaining cover and is designed to be vertical to the bottom of the pressure-maintaining cover without contact; and
the calibrated ultrasonic test device is configured to maintain the pressurized coupling fluid at the calibrated temperature and pressure of the zero-stress calibration.