US 11,796,442 B2
Porosity deriving method and porosity deriving device
Yasuro Katsuyama, Saitama (JP); Yuichi Tajiri, Saitama (JP); Takehiro Fukushima, Saitama (JP); and Rio Koyama, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/680,321.
Claims priority of application No. 2021-042422 (JP), filed on Mar. 16, 2021.
Prior Publication US 2022/0299417 A1, Sep. 22, 2022
Int. Cl. G01N 15/08 (2006.01); G01G 9/00 (2006.01); G01B 17/02 (2006.01); G01B 11/06 (2006.01); G01G 17/02 (2006.01); H01M 10/052 (2010.01); H01M 10/48 (2006.01)
CPC G01N 15/088 (2013.01) [G01B 11/06 (2013.01); G01B 17/02 (2013.01); G01G 9/005 (2013.01); G01N 15/0893 (2013.01); G01G 17/02 (2013.01); H01M 10/052 (2013.01); H01M 10/48 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A porosity deriving method of deriving a porosity of an inspection object that is a base member filled with a filling material, the porosity deriving method comprising:
a basis weight measuring step including measuring a basis weight of a specific part of the inspection object being conveyed on a conveyor;
a thickness measuring step including measuring a thickness of the specific part of the inspection object being conveyed on the conveyor; and
a porosity deriving step including deriving a porosity of the inspection object from the basis weight, the thickness, and a true density of the inspection object,
wherein the basis weight measuring step includes measuring a basis weight of the base member and a basis weight of the filling material separately from each other, and
wherein the porosity deriving step includes deriving the porosity of the inspection object from the basis weight of the base member, the basis weight of the filling material, the thickness of the specific part of the inspection object, a true density of the base member, and a true density of the filling material.