Dynamic fracture initiation criterion in ceramics under combined mode impact loading

组合模式冲击载荷下陶瓷的动态断裂萌生准则

基本信息

  • 批准号:
    04650066
  • 负责人:
  • 金额:
    $ 1.41万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1992
  • 资助国家:
    日本
  • 起止时间:
    1992 至 1993
  • 项目状态:
    已结题

项目摘要

Recent progress in ceramics industries has enabled us to use high performance ceramics for manufacturing components of machinery such as turbines. However, the use of high performance ceramics has required further investigation in dynamic fracture mechanics.In an ordinary case that an impact load acts on a structure, stress waves obliquely impinge to various cracklike flaws in the structural components. The stress waves produce mixed-made stress states around the crack-tips. Thus the dynamic fracture initiation criterion under combined mode loading has to be made clear for assessments of structural integrity in relation to the impact fracture.For the accurate evaluation of the dynamic fracture criterion, we have developed a new test method for mixed-mode impact fracture using the centerprecracked disk specimen. The impact fracture tests canbe performed under arbitrary combinations of mode I and II by varying the inclibation angle of the centerprecrack. The dynamic fracture toughness values of mode I and II are determiced form critical dynamic stress intensity factors at fracture initiation. The dynamic stress intensity factors are calculated by superposing the step-response functions with respect to the impact load history measured in the fracture test. The stepresponse fuctions have been obtained from finite element analyzes for the precracked disk specimen. The onset of fracture initiation is detected using the strain gage near the crack-tip.In the resent research, dynamic and static fracture tests are performed for alumina ceramics and some brittle materials under combined mode loadings. The dynamic results are compared with the quasi-static data obtained in diametralcompression fracture tests, and fitted to a simple empirical eriterion proposed in this study.
陶瓷行业的最新进展使我们能够使用高性能陶瓷来制造涡轮机等机械组件。然而,高性能陶瓷的使用需要在动态断裂力学中进行进一步研究。在通常的情况下,撞击负荷作用于结构上,应力波倾斜地影响了结构成分中各种裂纹的缺陷。应力波在裂纹茶周围产生混合应力状态。因此,必须清楚地确定在组合模式载荷下的动态断裂启动标准,以评估与冲击裂缝有关的结构完整性。为了准确评估动态骨折标准,我们已经开发了一种新的测试方法,用于使用中心反射的磁盘标本进行混合模式撞击骨折。冲击骨折测试可以通过改变中心轨道的夹有角度在模式I和II的任意组合下进行。模式I和II的动态断裂韧性值被确定为裂缝启动时的关键动态应力强度因子。动态应力强度因子是通过相对于裂缝测试中测得的冲击负荷病史的超级响应函数来计算的。已从磁盘标本的有限元分析获得了stepresponse fuctions。使用裂纹尖端附近的应变量检测到骨折起始的发作。在令人讨厌的研究中,在合并模式载荷下进行了氧化铝陶瓷和一些脆性材料进行动态和静态断裂测试。将动态结果与在径向压缩骨折测试中获得的准静态数据进行了比较,并适合本研究中提出的简单经验验证。

项目成果

期刊论文数量(14)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Motohiro Nakano and Keizo Kishida: ""Mixed-Mode Impact Fracture Tests Using Center-Notched Disk Specimens"" Proc. International Symposium on Impact Engineering. Vol. II. 581-586 (1992)
Motohiro Nakano 和 Keizo Kishida:“使用中心缺口盘样本的混合模式冲击断裂测试”Proc。
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    0
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M.Nakano,K.Kishida,Y.Yamauchi,Y.Sogabe: "Dynamic fracture initiation in brittle materials under combined mode I/II loading" Proc.Int.Conf.on Mech.& Phys.Behav.Mat.under Dynamic Loading. (in print). (1994)
M.Nakano、K.Kishida、Y.Yamauchi、Y.Sogabe:“组合模式 I/II 载荷下脆性材料的动态断裂起始”Proc.Int.Conf.on Mech。
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Motohiro Nakano and Keizo Kishida: "Mixed-Mode Impact Fracture Tests Using Center-Notched Disk Specimens" Proceedings of The International Symposium on Impact Engineering. Vol.II. 581-586 (1992)
Motohiro Nakano 和 Keizo Kishida:“使用中心缺口盘样本的混合模式冲击断裂测试”国际冲击工程研讨会论文集。
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    0
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Motohiro Nakano, Keizo Kishida, yoshiaki Yamauchi and Yuji Sogade: ""Dynamic Fracture Initiation in Brittle Materials under Combined Mode I/II Loading"" Proc. International Confernce on Mechanical and Physical Behavior of Materials under Dymanic Loading.
Motohiro Nakano、Keizo Kishida、yoshiaki Yamauchi 和 Yuji Sogade:“组合模式 I/II 加载下脆性材料的动态断裂引发”Proc。
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    0
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M.Nakano,K.Kishida,Y.Yamauchi and Y.Sogabe: "Dynamic Fracture Initiation in Brittle Materials under Combined Mode I/II Loading" Proc.Int.Conf.on Mechanical and Physical Behavior of Materials under Dynamic Loading. in print. (1994)
M.Nakano、K.Kishida、Y.Yamauchi 和 Y.Sogabe:“组合模式 I/II 载荷下脆性材料的动态断裂引发”Proc.Int.Conf.on 动态载荷下材料的机械和物理行为。
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NAKANO Motohiro其他文献

Optimal Timing of Housing Tenure Transition : A Real Option Approach
住房权属过渡的最佳时机:实物期权方法
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    ONO Takatoshi;TANAKA Kazuo A.;OZAKI Norimasa;SHIOTA Takeshi;NAGAI Keiji;SHIGEMORI Keisuke;NAKANO Motohiro;KATAOKA Toshihiko;Motohiro Adachi
  • 通讯作者:
    Motohiro Adachi

NAKANO Motohiro的其他文献

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{{ truncateString('NAKANO Motohiro', 18)}}的其他基金

Developments of Plasma Soft X-ray Source for Microscopic Observation of Organelles in Living Cells with Focusing Capillary
聚焦毛细管显微观察活细胞细胞器等离子体软X射线源的研制
  • 批准号:
    25282132
  • 财政年份:
    2013
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Studies on Spin Ground States of Cubic-Symmetry Single-Molecule Magnets
立方对称单分子磁体自旋基态的研究
  • 批准号:
    23550076
  • 财政年份:
    2011
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Profile Measurement System of Phase-Shifting Point Diffraction Interferometer with Spherical Reference Wavefronts Generated byTwo Optical Fibers
双光纤球面参考波前移相点衍射干涉仪轮廓测量系统
  • 批准号:
    22560109
  • 财政年份:
    2010
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of High Performance EUV Light Source Using Condensed Cone-center-axis Plasma Generated by Laser with Nano-second Pulse-power
利用纳秒脉冲功率激光产生的聚光锥中心轴等离子体开发高性能 EUV 光源
  • 批准号:
    17360161
  • 财政年份:
    2005
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Studies on Magnetic Properties of Transition Metal Polynuclear Complexes and Molecular Design Aiming to Single-Molecule Magnets
过渡金属多核配合物磁性能研究及单分子磁体分子设计
  • 批准号:
    14540533
  • 财政年份:
    2002
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
SIMULTANEOUS MEASUREMENT OF SHOCK-WAVE VELOCITY AND ULTRA-HIGH DENSITY WITH PENUMBRAL X-RAY BACKLIGHT TECHNIQUE
利用半影 X 射线背光技术同时测量冲击波速度和超高密度
  • 批准号:
    12308020
  • 财政年份:
    2000
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
レーザ誘起衝撃波を用いた航空宇宙材料の衝撃破壊に関する研究
激光诱导冲击波对航空航天材料的冲击断裂研究
  • 批准号:
    09305009
  • 财政年份:
    1997
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)

相似海外基金

Understanding Mixed-Mode Fracture Mechanics in Additively Manufacturable Functionally Graded Microcellular Solids
了解可增材制造的功能梯度微孔固体中的混合模式断裂力学
  • 批准号:
    2317406
  • 财政年份:
    2023
  • 资助金额:
    $ 1.41万
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    Standard Grant
Three-Dimensional Mixed-Mode Fracture Mechanics Methodologies for Structural Integrity Assessments of Welded Structures
用于焊接结构结构完整性评估的三维混合模式断裂力学方法
  • 批准号:
    RGPIN-2020-06550
  • 财政年份:
    2022
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Discovery Grants Program - Individual
Three-Dimensional Mixed-Mode Fracture Mechanics Methodologies for Structural Integrity Assessments of Welded Structures
用于焊接结构结构完整性评估的三维混合模式断裂力学方法
  • 批准号:
    RGPIN-2020-06550
  • 财政年份:
    2021
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Discovery Grants Program - Individual
Three-Dimensional Mixed-Mode Fracture Mechanics Methodologies for Structural Integrity Assessments of Welded Structures
用于焊接结构结构完整性评估的三维混合模式断裂力学方法
  • 批准号:
    RGPIN-2020-06550
  • 财政年份:
    2020
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Discovery Grants Program - Individual
Development of experimental methods in the fields of non-linear fracture mechanics, investigating adhesive joints subjected to mixed-mode loading
非线性断裂力学领域实验方法的发展,研究混合模式载荷下的粘合接头
  • 批准号:
    329889536
  • 财政年份:
    2017
  • 资助金额:
    $ 1.41万
  • 项目类别:
    Research Grants
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