公开(公告)号：US20220237766A1

公开(公告)日：2022-07-28

申请号：US17719888

申请日：2022-04-13

Applicant: University of Electronic Science and Technology of China

Inventor： Jing Jiang ,  Yi Niu ,  Chao Wang ,  Peifeng Yu ,  Zezhan Zhang ,  Shan Gao

IPC: G06T7/00 ,  G01B11/16 ,  G01J5/00 ,  G06T7/73

Abstract: A measurement and reconstruction method for a turbine blade strain field of with integrates an imaging technology and an infrared photoelectric measurement technology. The imaging technology is mainly responsible for the measurement of the strain field on a target blade surface, so as to use a digital image processing technology to obtain blade strain field data. The infrared photoelectric measurement technology is mainly aimed at the strain at blade edges, which uses temperature difference between the blade edges and blade gaps to perform strain measurement. Measurement results of the two modes are finally converted into blade strain parameters, thereby reconstructing the target blade strain field based on host computer software.

公开(公告)号：US20210270674A1

公开(公告)日：2021-09-02

申请号：US17326313

申请日：2021-05-20

Applicant: University of Electronic Science and Technology of China

Inventor： Chao Wang ,  Jing Jiang ,  Anmei Qiu ,  Yekui Zhong ,  Yi Niu ,  Peifeng Yu ,  Zezhan Zhang ,  Ying Duan ,  Xueke Gou ,  Guiyun Tian

IPC: G01J5/00 ,  G01J5/08 ,  G01J5/10 ,  G01M15/02 ,  G01M15/14

Abstract: A device for measuring surface temperature of a turbine blade based on a rotatable prism includes a probe, a prism rotating apparatus and an optical focusing apparatus. The prism rotating apparatus and the optical focusing apparatus are located inside the probe. The probe includes a probe outer casing, a probe inner casing, a water-cooled casing pipe, a sapphire window piece, a quartz prism, a light pipe, a collimating lens, a focusing lens and an infrared array detector. The prism rotating apparatus includes a rotary motor, a worm, a gear and a prism rotary table, the rotary motor rotates to drive the prism rotary table to rotate. The optical focusing apparatus includes a telescopic motor, a coupler, a lead screw and a drive rod, the telescopic motor rotates to drive the lead screw, so as to further drive the drive rod to move along the slot.

公开(公告)号：US20210143014A1

公开(公告)日：2021-05-13

申请号：US16618354

申请日：2019-03-22

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Chao Wang ,  Ying Duan ,  Jing Jiang ,  Jun Hu ,  Zezhan Zhang ,  Yang Yang ,  Xueke Gou ,  Congjun Wu

IPC: H01L21/20 ,  H01L21/02 ,  G02B27/10 ,  G02B27/30

Abstract: The present invention designs a measurement scheme for the longitudinal temperature of the film during nitride epitaxial growth, belongs to the field of semiconductor measurement technology. Epitaxial growth technology is one of the most effective methods for preparing nitride materials. The temperature during the growth process restricts the performance of the device. The non-contact temperature measurement method is generally used to measure the temperature of the graphite disk as the base, which can't obtain the longitudinal temperature. The present invention respectively measures the surface temperature of the epitaxial layer and the temperature of the graphite disk by ultraviolet and infrared radiation temperature measurement technologies, and then uses the finite element simulation method to perform thermal field analysis from the bottom surface of the substrate to the surface of the epitaxial layer, so that the longitudinal temperature is obtained, thereby providing a favorable basis for temperature regulation during nitride growth.

公开(公告)号：US20180240955A1

公开(公告)日：2018-08-23

申请号：US15936442

申请日：2018-03-27

Applicant: University of Electronic Science and Technology of China

Inventor： Chao Wang ,  Junfeng Xia ,  Jing Jiang ,  Ting Zhou ,  Yide Chen ,  Yi Niu ,  Rui Zhang ,  Hanqing Tian ,  Yan Pan

IPC: H01L35/22 ,  C01B21/06 ,  H01L35/34

CPC classification number: H01L35/22 ,  C01B21/062 ,  H01L35/34

Abstract: The present invention discloses CrN thermoelectric material and its preparation method, which belongs to the field of thermoelectric materials. Here, we provide a study for thermoelectric properties, hardness, wear-resisting performance and thermal stability of CrN. These results show that CrN possesses excellent mechanical properties and thermal stability. The hardness of the bulk CrN sample is as high as 735.76 HV, which is far superior to most of thermoelectric materials. The thermogravimetric analysis test indicates that CrN remain stable at 873 K. Friction and wear test results demonstrate that the low friction coefficient (˜0.42) and good wear resistance of CrN. The maximum ZT value of 0.104 is observed at 848 K. In this way, CrN may be a promising thermoelectric material in extreme environment application which requires both mechanical and thermoelectric properties. Such as collision avoidance systems and outerspace.