公开(公告)号：US20160033452A1

公开(公告)日：2016-02-04

申请号：US14647813

申请日：2013-03-12

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang XU ,  Lang XU ,  Qinxue PAN ,  Dingguo XIAO ,  Xiao LI ,  Wentao SONG

IPC: G01N29/04 ,  C21D9/46 ,  B23K31/02

CPC classification number: G01N29/04 ,  B23K31/02 ,  B23K31/125 ,  B23K2103/04 ,  C21D9/46 ,  G01L5/0047 ,  G01N3/00 ,  G01N2203/0296 ,  G01N2203/0298 ,  G01N2291/0421 ,  G01N2291/0423 ,  G01N2291/267

Abstract: A fixed value residual stress test block, comprising a main body (1) and two welded blocks (2); the main body (1) and the welded blocks (2) are all rectangular metal blocks; the welded blocks (2) are welded onto the two opposite side surfaces of the main body (1); the main body (1) is deformed under the upper and lower pressures and generates residual stress. The fixed value residual stress test block has a simple structure.

Abstract translation: 一种固定值残余应力测试块，包括主体（1）和两个焊接块（2）; 主体（1）和焊接块（2）都是矩形金属块; 焊接块（2）焊接到主体（1）的两个相对的侧表面上; 主体（1）在上下压力下变形，产生残余应力。 固定值残余应力试块具有简单的结构。

公开(公告)号：US20200270712A1

公开(公告)日：2020-08-27

申请号：US16796542

申请日：2020-02-20

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang XU ,  Peng YIN ,  Yuren LU ,  Jianfeng SONG ,  Peilu LI ,  Dezhi LI ,  Zhaowei MIAO

IPC: C21D1/04 ,  C21D10/00

Abstract: The present disclosure relates to a method for reducing and homogenizing residual stress of a component, which comprises: detecting stress value(s) of regulation portion(s) of the component; placing the component in a container containing a fluid medium so as to immerse the component in the fluid medium; emitting, by an acoustic wave generator, an elastic wave to the fluid medium in a manner of emitting towards the regulation portion(s) of the component, and determining an emitting period of time and a frequency of the elastic wave based on the stress value(s); returning to the step S1 when the emitting period of time has elapsed, until the stress value(s) is stable. The method and the device solve the problems that it is difficult to reduce and homogenize the residual stress on high-precision machined components, complex structural components, thin-walled structural components, and low-stiffness components.

公开(公告)号：US20150300897A1

公开(公告)日：2015-10-22

申请号：US14648225

申请日：2013-07-02

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Chunguang XU ,  Lang XU ,  Qinxue PAN ,  Dingguo XIAO ,  Xiao LI ,  Jun GUO ,  Wantao SONG ,  Haiyang LIU

IPC: G01L1/25 ,  G01N29/44 ,  G01N29/04

CPC classification number: G01L1/255 ,  G01N29/04 ,  G01N29/041 ,  G01N29/07 ,  G01N29/2487 ,  G01N29/265 ,  G01N29/30 ,  G01N29/44 ,  G01N29/4472 ,  G01N2291/02827 ,  G01N2291/0289 ,  G01N2291/0421 ,  G01N2291/0425 ,  G01N2291/102

Abstract: A sensor device, comprising two symmetrically disposed sonolucent wedges (5), and a connecting piece for fixedly connecting the two sonolucent wedges (5); the upper surfaces of the sonolucent wedges (5) are provided with inclined planes; installation holes are formed on the inclined planes; transducers (3) are installed in respective installation holes; one transducer (3) is used to generate ultrasonic waves, and the other transducer (3) is used to receive the ultrasonic waves generated by the previous transducer (3). The residual stress detection system comprises a sensor device, an ultrasonic transmission card, and a data acquisition card.

Abstract translation: 传感器装置，包括两个对称设置的声光楔（5）和用于固定地连接两个声光楔（5）的连接件; 声光楔（5）的上表面设有倾斜平面; 在倾斜平面上形成安装孔; 传感器（3）安装在相应的安装孔中; 一个换能器（3）用于产生超声波，另一个换能器（3）用于接收由先前的换能器（3）产生的超声波。 残余应力检测系统包括传感器装置，超声波传输卡和数据采集卡。