Beijing Institute of Technology

Qinxue Pan

Xiao Dong Li

Chunguang Xu

Dingguo Xiao

Lang Xu

Wentao Song

Jun Guo

Haiyang Liu

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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Qinxue Pan