Patent ID: 9091526
Filing Date: 2015-07-28
Classification: G01B,H01L

Abstract:
1. A method of inspecting thickness of fibre cloth, comprising steps of: (a) disposing a fibre cloth on a metal backboard; (b) sensing an eddy current responding from the fibre cloth disposed on the metal backboard by enabling an eddy current sensor of an eddy current sensing device to directly be in contact with a upper surface of the fibre cloth so as to allow the eddy current sensing device to obtain a multilayer thickness value; and (c) comparing the multilayer thickness value with a single-layer thickness value to obtain a cloth thickness value corresponding to the thickness of the fibre cloth, wherein the single-layer thickness value is obtained by enabling the eddy current sensor of the eddy current sensing device to directly be in contact with an upper surface of the metal backboard so as to allow the eddy current sensing device to sense an eddy current responding from the metal backboard.