Effect of grain angle on the strain distribution during orthogonal cutting of hinoki (Chamaecyparis obtusa) measured using a digital image correlation method

The strain associated with orthogonal cutting with and against the grain of hinoki ( Chamaecyparis obtusa ) was measured. Digital image correlation method was used to measure strain distributed in the area within 0.5 mm of the cutting edge. The relationship between strain and the use of different gr...

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Bibliographic Details
Published in:Journal of wood science 2019-09, Vol.65 (1), p.1-11, Article 44
Main Authors: Matsuda, Yosuke, Fujiwara, Yuko, Fujii, Yoshihisa
Format: Article
Language:English
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Summary:The strain associated with orthogonal cutting with and against the grain of hinoki ( Chamaecyparis obtusa ) was measured. Digital image correlation method was used to measure strain distributed in the area within 0.5 mm of the cutting edge. The relationship between strain and the use of different grain angles (− 15° ≤  φ  ≤ + 15°) was investigated. The compressive strain parallel to the cutting direction was detected in the area above the path of the cutting edge regardless of φ . The tensile strain normal to the cutting direction which generated cleavage ahead of the tool decreased with increasing φ , when the cutting angle was 30°. While cutting with the grain, shear strain above the path of the cutting edge was positive when the cutting angle was 30°, although it changed to negative with larger cutting angles. The maximum principal strain given by a cutting angle of 50° was less affected by φ than those given by the other cutting angles. The maximum principal strain ahead of the tool was minimized when the cutting angle was 50° and + 5° ≤  φ  ≤ + 10°.
ISSN:1435-0211
1611-4663
DOI:10.1186/s10086-019-1824-2