Application of Theory of Super Lubricityt of Minimum Entropy Welding

在第一阶段，为了发展焊接技术，进行了理论上的考虑。众所周知，表面织构的差异强烈地影响材料的焊接性能。为了表征表面纹理，我们研究了小波变换提取加工表面的特征。利用小波变换，可以有效地分离加工表面的局部信息和长波长信息，这是一个USC傅立叶变换时很难做到的。这种分离使得能够确定适合于最小熵路径的表面轮廓。在这项调查中，我们发现新的小波方法，使信号的相位信息的提取。通常，用二次小波提取信号的相位信息是困难的，本文发展了在周期边界条件下用三次小波提取信号相位信息的方法，并给出了改进方法 ...更多信息 对超润滑理论进行了补充。为了将超润滑理论应用到最小熵路径法中，本文进行了理论上的考虑，将改进的超润滑理论应用于用化学和物理方法改变表面的特定部位，使其具有所需的摩擦系数，与激光或电子束等普通能量注入方法相比，采用改进的超润滑理论的方法所需的能量相对较小，从而使表面达到所需的摩擦系数。还已知的是，最小熵路径与其他方法（如加热）相比导致更少的熵形成。从理论上探讨了表面信息快速传递的可能性，并将其应用于微摩擦学。指出了细菌鞭毛砂浆超润滑性存在的可能性。我们尝试用最小熵路径法解释鞭毛臼的形成机理，并对鞭毛臼的形成机理进行了定性解释，避免了鞭毛臼的扣押过程。少

In first stage, thcorctical consideration is done In order to develop welding technology It is widely know that the diffcrcncc of surface textures strongly affect welding property of materials. To characterize the surface texture, we investigate the wavelet transformation to extract the characteristic feature of manufactured surface. By using wavelet transformation, separation of the local in formation of manufactured surface and long wavelength information which is very difficult when one USC Fourier transformation can be done efficiently. This separation enables the determination of surface profile suitable for minimum-entropy path. In this investigation, we fount new wavelet method which enable extraction of phase information of signal. Usually, extraction of phase information of signal is difficult when one uses dyadicwavelct, In this study, we develop the technique of using triadic-wavelet in periodic boundary condition and show the extraction of phase information.Next, the improv … More ement of theory of superlubricity is done. In order to apply theory of superlubricity to minimum-entropy path method, theoretical consideration is done.he improved theory is applied to change specific part of surface to have desired friction coefficient by chemical and physical method.It is known that the method using improved theory need relatively small energy to have the surface of desired condition compared with the ordinary energy injection method like laser of electron beam method. It is also known that the minimum entropy path results less entropy formation compared with the other method like heating. The possibility of the fast transfer of surface information is also investigated theoretically.This investigation is also applied micro-tribology. The possibility of existence of superlubricity in bacteria flagellar mortar is pointed out. We tried to explain the mechanism of flagellar mortar by applying minimum entropy path method and obtained qualitative explanation of the mechanism to avoid seizure process. Less