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1. US20190323980 - Verifying structural integrity of materials

Office
United States of America
Application Number 16469900
Application Date 15.12.2017
Publication Number 20190323980
Publication Date 24.10.2019
Grant Number 11112374
Grant Date 07.09.2021
Publication Kind B2
IPC
G01N 27/20
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
02by investigating impedance
04by investigating resistance
20Investigating the presence of flaws
CPC
G01N 27/20
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
02by investigating impedance
04by investigating resistance
20Investigating the presence of flaws
Applicants 3M INNOVATIVE PROPERTIES COMPANY
Inventors Christopher R. Yungers
Subhalakshmi M. Falknor
David H. Redinger
Ronald D. Jesme
Eric M. Chinnock
Agents Sriram Srinivasan
Thomas M. Spielbauer
Title
(EN) Verifying structural integrity of materials
Abstract
(EN)

A method may include coupling a first electrical connector of an article to a second electrical connector of a measurement device. The article may include a tested material, the first electrical connector, and a plurality of electrical contacts electrically connected to the first electrical connector. The measurement device may include a power source and a user interface. The method also may include causing, by a controller, an electrical signal to be applied to a pair of drive electrical contacts from the plurality of electrical contacts. The method further may include receiving, by the controller, from an analog-to-digital converter, a measured voltage measured using a measurement electrical contact from the plurality of electrical contacts. The method also may include determining, by the controller, whether the tested material includes a crack or other defect based on the measured voltage.


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