公开(公告)号：US20220284558A1

公开(公告)日：2022-09-08

申请号：US17388131

申请日：2021-07-29

Applicant: University of Science and Technology of China

Inventor： Shenghong Huang ,  Zhiwei Pan ,  Menglai Jiang ,  Zhifeng Zheng ,  Meixia Qiao

IPC: G06T7/00 ,  G01L1/24 ,  H04N17/00 ,  H04N5/72 ,  H04N13/25

Abstract: The present disclosure relates to a method for measuring full-field strain of an ultra-high temperature (UHT) object based on a digital image correlation method. The temperature range is from normal temperature to 3500 degrees Celsius. The method includes the steps of selecting a proper high-temperature-resistant speckle material, tantalum carbide powder, according to the characteristics of the object to be measured. First, polishing a to-be-measured surface of a tungsten test piece to remove an oxide layer, then mixing the tantalum carbide (TaC) powder and absolute ethanol to form a paste according to a mass ratio of 1:2. Making randomly distributed speckles from the mixture on the to-be-measured surface of the test piece which has been processed. In order to improve firmness and stability of the newly made speckles, performing curing treatment to the speckles.

公开(公告)号：US11734815B2

公开(公告)日：2023-08-22

申请号：US17388131

申请日：2021-07-29

Applicant: University of Science and Technology of China

Inventor： Shenghong Huang ,  Zhiwei Pan ,  Menglai Jiang ,  Zhifeng Zheng ,  Meixia Qiao

IPC: G06T7/00 ,  H04N13/25 ,  G01L1/24 ,  H04N5/72 ,  H04N17/00

CPC classification number: G06T7/001 ,  G01L1/248 ,  H04N5/72 ,  H04N13/25 ,  H04N17/002 ,  G06T2207/10012 ,  G06T2207/10048 ,  G06T2207/30136

Abstract: The present disclosure relates to a method for measuring full-field strain of an ultra-high temperature (UHT) object based on a digital image correlation method. The temperature range is from normal temperature to 3500 degrees Celsius. The method includes the steps of selecting a proper high-temperature-resistant speckle material, tantalum carbide powder, according to the characteristics of the object to be measured. First, polishing a to-be-measured surface of a tungsten test piece to remove an oxide layer, then mixing the tantalum carbide (TaC) powder and absolute ethanol to form a paste according to a mass ratio of 1:2. Making randomly distributed speckles from the mixture on the to-be-measured surface of the test piece which has been processed. In order to improve firmness and stability of the newly made speckles, performing curing treatment to the speckles.