US 11,921,089 B2
Method for performing press-fitting test in consideration of amount of deformation of load cell
Hee Kwang Chang, Seoul (KR); Kwang Ho Kim, Seongnam-si (KR); and Jeong Hwa Hong, Suwon-si (KR)
Assigned to FRONTICS, INC., (KR)
Appl. No. 17/431,477
Filed by FRONTICS. INC, Seoul (KR)
PCT Filed Feb. 17, 2020, PCT No. PCT/KR2020/002223
§ 371(c)(1), (2) Date Aug. 17, 2021,
PCT Pub. No. WO2020/171503, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 10-2019-0018684 (KR), filed on Feb. 18, 2019.
Prior Publication US 2022/0146388 A1, May 12, 2022
Int. Cl. G01N 3/40 (2006.01); G01N 3/06 (2006.01); G01N 3/08 (2006.01); G01N 1/42 (2006.01); G01N 3/14 (2006.01)
CPC G01N 3/40 (2013.01) [G01N 3/06 (2013.01); G01N 3/08 (2013.01); G01N 1/42 (2013.01); G01N 3/14 (2013.01); G01N 2203/0019 (2013.01); G01N 2203/0033 (2013.01); G01N 2203/0078 (2013.01); G01N 2203/06 (2013.01); G01N 2203/0676 (2013.01); G01N 2203/0682 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for performing an indentation test in consideration of an amount of deformation of a load cell, the method comprising:
a first step of deriving a displacement function of the load cell according to a load by applying a load to an indentation module and measuring the applied load and a displacement;
a second step of correcting a measured value of a displacement sensor considering the amount of deformation of the load cell derived from the displacement function of the load cell according to a load; and
a third step of deriving a load-displacement curve from a corrected displacement value and a measured load value by applying a load to a test object with an indenter and measuring the applied load and displacement, wherein the first step includes,
a step of measuring a displacement of the indentation module for a frame supporting sliding of the indentation module; and
a step of measuring a displacement of the frame,
wherein the displacement function of the load cell according to a load is derived by fitting the measured displacement of the indentation module for the frame to the measured load value, fitting the measured displacement of the frame to the measured load value, and subtracting the fitted displacement of the frame from the fitted displacement of the indentation module for the frame.