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A rugged lithium‐ion battery (LIB) can be realized without any new material development through selective material matching based on localized deformation of a substrate induced by its well‐designed pattern. In particular, an auxetic cut flexible substrate accommodates various complex deformations and adaptive conformations through the hinge joints because the external force is highly localized in...
The RFECT(Remote Field Eddy Current Testing) is based on a phenomenon that occurs around a solenoidal exciter coil in conductive pipe. In previous researches, the principle of RFECT is generally described as electromagnetic energy flow that has penetrated the pipe wall. It explains that there is remote field zone which is no direct energy coupling zone. To observe the effect of remote field zone is...
The RFECT(Remote Field Eddy Current Testing) is based on a phenomenon that occurs around a solenoidal exciter coil and receiving sensor coils in conductive pipe. There is remote field zone in which the eddy current distributions are concentrated on the outer pipe wall. So, it is possible to detect a defect which occurs on the outer surface of pipe wall even if receiving coils are located in the interior...
In this paper, we proposed how the V-skew applied on a magnet of the rotor to improve the characteristics of cogging torque in large PMSM. Large PMSM is difficult to apply a pitch of the diagonal magnetic skew because of the motor's structure and making. In addition, the force in the direction of z-axis occurs when the diagonal skew is applied. So we are applying the optimal v-skew to reduce torque...
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