CAJ | 학술논문

分析研究了淹没磨料水射流对花岗岩切割所成的切缝,发现淹没状况下切缝断面存在一宽度常数区;利用Hurst指数和R/S分析法得出了切缝形成过程中的时间相关性与随机性,得出切缝底部不仅存在时间相关性,且随着进给速度的减小,随机性增强、相关性减弱的结论。
분석연구료엄몰마료수사류대화강암절할소성적절봉,발현엄몰상황하절봉단면존재일관도상수구;이용Hurst지수화R/S분석법득출료절봉형성과정중적시간상관성여수궤성,득출절봉저부불부존재시간상관성,차수착진급속도적감소,수궤성증강、상관성감약적결론。
This paper mainly focued on analysing the kerf of submerged abrasive water jet cutting from which a width of the constant region was obversed.The author adopted the Hurst index and R/S analytical method to analyse and get the temporal correlation and random in the formation of the kerf,which randomness increases and correlation deteriorates as the feed rate decreases.