Invention Grant
- Patent Title: Method for measuring dynamic stress field evolution law of complex heterogeneous structure
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Application No.: US16477850Application Date: 2018-03-23
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Publication No.: US10648894B2Publication Date: 2020-05-12
- Inventor: Yang Ju , Zhangyu Ren , Li Wang , Lingtao Mao , Hongbin Liu
- Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING
- Applicant Address: CN Beijing
- Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING
- Current Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING
- Current Assignee Address: CN Beijing
- Agency: Apex Attorneys at Law, LLP
- Agent Yue (Robert) Xu
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5853c16f
- International Application: PCT/CN2018/080201 WO 20180323
- International Announcement: WO2018/219027 WO 20181206
- Main IPC: G06T7/00
- IPC: G06T7/00 ; G01N3/06 ; B33Y50/00 ; B29C64/386 ; B33Y70/00 ; B33Y80/00 ; B29L31/40

Abstract:
A method for measuring the dynamic stress field evolution law of a complex heterogeneous structure, comprising: preparing a transparent photosensitive resin model of a complex heterogeneous structure by means of three-dimensional (3D) printing technology to serve as a test piece (S101); placing the test piece in a light path of a circularly polarized light dark field, performing continuous stress loading on the test piece, and recording images (S102); acquiring a plurality of continuously changing full-field stress fringe grayscale images according to videos generated by the image recording (S103); then acquiring grayscale value change sequences of pixel points at each position in the images (S104); and finally, calculating full-field fringe orders under continuous loading conditions according to the relation between the grayscale values and the fringe orders so as to calculate full-field stress values under the continuous loading conditions (S105). Thus, it is possible to extract and quantify the global dynamic stress field evolution law of a complex heterogeneous structure subjected to high exterior load under fixed light field conditions.
Public/Granted literature
- US2712378A Conveyor belt guiding device Public/Granted day:1955-07-05
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