인장 실험 후 파단 형태를 확인했을 때, 미처리 및 160° 처리한 pine의 경우 나뭇결의 형태가 유사한 것을 확인하였다.
When checking the fracture shape after the tensile test, it was confirmed that the shape of the grain of wood was similar in the case of pine that were untreated and treated at 160°.