Beijing Institute of Technology

Dingguo Xiao

Chunguang Xu

Xiao Dong Li

Wentao Song

Lang Xu

Qinxue Pan

Lei He

Jun Guo

Haiyang Liu

Qiutao Wang

An ultrasonic detection and tensile calibration test method for bonding strength grade comprising bonding an upper substrate block to bonding groove(s) to form a theoretical bonding area, and applying a downward actual tensile force to a lower substrate block; obtaining an actual bonding area of the theoretical bonding area; calculating a first actual bonding strength by using the actual tensile force and the actual bonding area, and comparing the first actual bonding strength with a second actual bonding strength calculated to verify the correctness of the theoretical bonding area as a calibrated bonding strength; forming a bond strength table in which the theoretical bonding areas, the actual bonding areas and the first actual bonding strengths are in one-to-one correspondence; and using the actual bonding area to find the actual bonding strength corresponding to the actual bonding area from the bonding area bonding strength table.

Ultrasonic detection and tensile calibration test method for bonding strength grade

A fixed value residual stress test block, comprising a main body () and two welded blocks (); the main body () and the welded blocks () are all rectangular metal blocks; the welded blocks () are welded onto the two opposite side surfaces of the main body (); the main body () is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.

Fixed value residual stress test block and manufacturing and preservation method thereof

A sensor device, comprising two symmetrically disposed sonolucent wedges (), and a connecting piece for fixedly connecting the two sonolucent wedges (); the upper surfaces of the sonolucent wedges () are provided with inclined planes; installation holes are formed on the inclined planes; transducers () are installed in respective installation holes; one transducer () is used to generate ultrasonic waves, and the other transducer () is used to receive the ultrasonic waves generated by the previous transducer (). The residual stress detection system comprises a sensor device, an ultrasonic transmission card, and a data acquisition card.

Sensor device and residual stress detection system employing same

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Beijing, China

Dingguo Xiao