兰州大学机构库
Novel Speckle Preparation and Heat Insulation Method for DIC Strain Measurement at Cryogenic Temperature and Large Deformation Environment
Yang, J.1,2; Li, Y.1,2; Deng, J.1,2; Zhang, Z.1,2; Zhou, J.1,2; Zhang, X.1,2
2023-10-25
Online publication date2023-10
Source PublicationEXPERIMENTAL MECHANICS   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN0014-4851 ; 1741-2765
EISSN1741-2765
page numbers12
AbstractBackgroundThe accuracy and reliability of digital image correlation (DIC) technologies are not only dependent on correlation algorithms but also strongly affected by the quality of the speckle patterns, especially under extremely low temperatures and large deformation conditions.Objective To overcome the challenge that the speckle patterns become more brittle and harder in the extremely low temperature experiments near liquid helium, and speckles cracking and shedding during the large deformation processes.MethodsNovel speckle patterns and fabrication technologies have been developed specifically tailored to extremely low temperatures and large deformation conditions.ResultsA novel spinning-coated speckle fabrication method based on PDMS silicone and TiO2 spherical particles was proposed, which can enable extremely low temperatures of DIC measurements above 20% strain. Using the 316LN stainless steel as a sample, the performances of several common speckles have been compared, and the strain localization and propagation had also been clarified.ConclusionsThe novel DIC full-field measurement method was validated with 316LN stainless steel, which confirmed that the speckles have excellent stability in the process of large deformation at extremely low temperatures. In addition, the formation and propagation processes of the slip bands for 316LN stainless steel have been revealed.
KeywordDigital image correlation Extremely low temperatures Speckle patterns Large deformation measurement 316LN stainless steel
PublisherSPRINGER
DOI10.1007/s11340-023-01006-0
Indexed BySCIE
Language英语
WOS Research AreaMaterials Science ; Mechanics
WOS SubjectMaterials Science, Multidisciplinary ; Mechanics ; Materials Science, Characterization & Testing
WOS IDWOS:001086741200001
Original Document TypeArticle ; Early Access
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/569106
Collection兰州大学
Corresponding AuthorZhang, X.
Affiliation
1.Lanzhou Univ, Key Lab Mech Disaster & Environm Western China, Minist Educ China, Lanzhou 730000, Peoples R China;
2.Lanzhou Univ, Coll Civil Engn & Mech, Dept Mech & Engn Sci, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Yang, J.,Li, Y.,Deng, J.,et al. Novel Speckle Preparation and Heat Insulation Method for DIC Strain Measurement at Cryogenic Temperature and Large Deformation Environment[J]. EXPERIMENTAL MECHANICS,2023.
APA Yang, J.,Li, Y.,Deng, J.,Zhang, Z.,Zhou, J.,&Zhang, X..(2023).Novel Speckle Preparation and Heat Insulation Method for DIC Strain Measurement at Cryogenic Temperature and Large Deformation Environment.EXPERIMENTAL MECHANICS.
MLA Yang, J.,et al."Novel Speckle Preparation and Heat Insulation Method for DIC Strain Measurement at Cryogenic Temperature and Large Deformation Environment".EXPERIMENTAL MECHANICS (2023).
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