Spatio-Temporal Observation of Plastic Deformation Process by Speckle Pattern Interferometry

散斑干涉测量塑性变形过程的时空观测

• 批准号: 09450265
• 负责人: TOYOOKA Satoru
• 金额: $ 2.24万
• 依托单位: Saitama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450265/
• 关键词: dynamic ESPI; physical meso-mechanics; plastic deformation; localized strain pulsation; phase analysis; addition and subtraction method; phase unwrapping; スペックル干渉法; 低合金鋼A533B; アルミ合金; 白色帯; リューダース帯; 非破壊検査; 劣化診断; 破壊; すべり帯

A new Dynamic Electronic Speckle Pattern Interferometory (DESPI) which consists of (1) course sampling system with 1 frame/sec, and (2) fine sampling system with 30 frame/sec has been developed for spatial-temporal observation of plastic deformation state : .(1) Propagation of strain concentrated band was observed in situ by the course sampling system. Localized strain pulsation (LSP) was newly found by the fine sampling system. As plastic deformation was progressed, propagating speed of the band and the frequency of the LSP were gradually decreased.(2) Phase analyzing method for DESPI, named "Addition and Subtraction Method" together with phase unwrapping algorithm was proposed. Localized strain concentrated band was quantitatively analyzed by the accuracy of the order of 10 nm.

本文介绍了一种新的动态电子散斑干涉仪（DESPI），它由1帧/秒的粗采样系统和30帧/秒的细采样系统组成，用于塑性变形状态的时空观测。(1)利用过程取样系统对应变集中带的扩展进行了现场观测。在精细取样系统中发现了新的局部应变脉动现象。随着塑性变形的进行，带状物的传播速度和LSP的频率逐渐降低。(2)提出了DESPI相位分析的“加减法”和相位展开算法。对应变集中带进行了定量分析，精度可达10 nm量级。

项目成果

豊岡了: "レーザスペックル干渉法による切り欠き低合金鋼材A533Bおよび溶接鋼材SM490の劣化評価"原子炉及び原子炉内構造物の経年劣化の非破壊計測と評価に関する調査研究分科会報告書. 68-73 (1999)

Ryo Toyooka：“利用激光散斑干涉法对缺口低合金钢A533B和焊接钢SM490进行劣化评估”核反应堆和反应堆内部结构时效劣化无损测量和评估研究小组委员会的报告68 -73（1999年）。 ）

張青川、豊岡了: "スペックル干渉法による金属材料の局在変形滑り帯の形成と進展過程の可視化"可視化情報学会誌. 19. 275-278 (1999)

张庆川，丰冈亮：“利用散斑干涉测量法可视化金属材料局部变形滑移带的形成和演化过程”，可视化信息学会杂志，19. 275-278 (1999)。

S.Toyooka: "Degradation assessment of notched specimen of low alloy steel A533B and welded specimen of SM490 (in Japanese)"Report of research group of material degradation of nuclear reactor. 68-73 (1999)

S.Toyooka：“低合金钢A533B缺口试样和SM490焊接试样的退化评估（日文）”核反应堆材料退化研究组的报告。

Q.C.Zhang S.Toyooka: "Visualization of formation and propagation of local deformation slipband of metals by ESPI"J. Vis. Soc. Jpn.. 19. 275-278. (1999)

Q.C.Zhang S.Toyooka：“利用 ESPI 可视化金属局部变形滑移带的形成和传播”J。

K.Yamada, S.Toyooka, et. al.: "Observation of Deformation and Degradation by Magnetic Sensor and by Laser Speckle Interferometry"Proc. Int. Symp. on Non-linear EM Systems. (be publised).

K.Yamada，S.Toyooka，等。