Mapping Microscale Strain Fields Around a Crack Tip in Molybdenum Via Geometric Phase Analysis and Digital Image Correlation

【Author】

Chunwang Zhao;Wencai Li;Jijun Li;Yongxiang Li;Quanlong Liu;Lifu Wang;Qingyu Hou;Yongming Xing;College of Science, Inner Mongolia University of Technology;College of Arts and Sciences, Shanghai Maritime University;School of Physical Science and Technology, Inner Mongolia University;

【Institution】

College of Science, Inner Mongolia University of Technology;College of Arts and Sciences, Shanghai Maritime University;School of Physical Science and Technology, Inner Mongolia University;

【Abstract】

Uniaxial tension tests were conducted on single-edge-notched tensile specimens of pure molybdenum with a mesh grid pattern in front of the notch. A series of images of crack initialization and propagation with a distorted mesh grid pattern were obtained by means of in situ scanning electron microscopy. Strain fields around the crack tip were mapped successively using geometric phase analysis and digital image correlation techniques, and then compared with the predictions obtained through linear elastic fracture mechanics(LEFM). The comparison shows that the measured strain distribution ahead of the crack tip is consistent with the LEFM predictions of up to 25 μm from the crack tip.

【Keywords】

Crack;;Strain field;;Geometric phase analysis;;Digital image correlation

References

To explore the background and basis of the node document

Springer Journals Database

Total: 26 articles

  • [1] XING Yongming DAI Fulong & YANG Wei FML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China; Department of Basic Science, Inner Mongolia Polytechnic University, Hohhot 010062, China, Experimental study about nano-deformation field near quasi-cleavage crack tip, Science in China,Ser.A,
  • [2] Masood Shah 1),Catherine Mabru 2),Farhad Rezai-Aria 3),Ines Souki 3) and Riffat Asim Pasha 1) 1) Mechanical Engineering Department,University of Engineering and Technology,Taxila,Pakistan 2) Department of Mechanics of Structures and Materials,University of Toulouse;INSA,UPS,Mines Albi,ISA;ICA(Institute Cl'ement Ader);DMSM,F-31056 Toulouse,France 3) Research Group of Surfaces,Machining,Materials and Tooling,University of Toulouse;INSA,UPS,Mines Albi,ISAE;ICA(Institute Cl'ement Ader);Campus Jarlard,F-81013 Albi cedex 09,France, An estimation of stress intensity factor in a clamped SE(T) specimen through numerical simulation and experimental verification:case of FCGR of AISI H11 tool steel, Acta Metallurgica Sinica(English Letters),
  • [3] Masaki Tanaka;;Kenji Higashida;;Kenji Kaneko;;Satoshi Hata;;Masatoshi Mitsuhara, Crack tip dislocations revealed by electron tomography in silicon single crystal, Scripta Materialia,
  • [4] C.W. Zhao;;Y.M. Xing;;C.E. Zhou;;P.C. Bai, Experimental examination of displacement and strain fields in an edge dislocation core, Acta Materialia,

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