Abstract: There is disclosed a method of inspecting the outer wall of a honeycomb structure body which can be performed without relying on human sensory functions and in which a defect detection level and an inspection time per honeycomb structure body are constant, so that stable inspection can be performed. In a method of inspecting the outer wall of a honeycomb structure body 1 made of a ceramic material, while rotating the honeycomb structure body 1, the outer wall of the honeycomb structure body 1 is imaged by a line camera 2, and the thus obtained image is processed to judge whether or not a defect is present in the outer wall of the honeycomb structure body 1.

Abstract: There is disclosed a method of inspecting the outer wall of a honeycomb structure body which can be performed without relying on human sensory functions and in which a defect detection level and an inspection time per honeycomb structure body are constant, so that stable inspection can be performed. In a method of inspecting the outer wall of a honeycomb structure body 1 made of a ceramic material, while rotating the honeycomb structure body 1, the outer wall of the honeycomb structure body 1 is imaged by a line camera 2, and the thus obtained image is processed to judge whether or not a defect is present in the outer wall of the honeycomb structure body 1.

Abstract: A shape-measuring device 1 measures the shape of a object to be measured 1 in which segments are arranged and bonded in rows while relatively moving the object 1 in one direction. The shape-measuring device includes rollers 31 provided corresponding to the rows of segments and displaced to follow unevenness of an end face 1a of the object while being rotated on the end face 1a due to the relative movement, detection means 35 provided corresponding to each roller 31 and detecting the amount of displacement of each roller 31, and calculation means 37 for calculating shape data of the object 1 based on the amount of displacement of the roller 31 detected by the detection means 35. The shape-measuring device 1 can accurately and promptly measure the shape of the object such as a DPF in which segments are bonded in rows.

Abstract: A shape-measuring device 1 measures the shape of a object to be measured 1 in which segments are arranged and bonded in rows while relatively moving the object 1 in one direction. The shape-measuring device includes rollers 31 provided corresponding to the rows of segments and displaced to follow unevenness of an end face 1a of the object while being rotated on the end face 1a due to the relative movement, detection means 35 provided corresponding to each roller 31 and detecting the amount of displacement of each roller 31, and calculation means 37 for calculating shape data of the object 1 based on the amount of displacement of the roller 31 detected by the detection means 35. The shape-measuring device 1 can accurately and promptly measure the shape of the object such as a DPF in which segments are bonded in rows.