- Patent Title: Method for analyzing damping characteristics of carbon composite material using viscous damping coefficient of carbon fiber and system for analyzing damping characteristics of carbon composite material using same
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Application No.: US17451044Application Date: 2021-10-15
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Publication No.: US12061171B2Publication Date: 2024-08-13
- Inventor: Chan-Jung Kim
- Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
- Applicant Address: KR Busan
- Assignee: Pukyong National University Industry-Univesity Cooperation Foundation
- Current Assignee: Pukyong National University Industry-Univesity Cooperation Foundation
- Current Assignee Address: KR Busan
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Priority: KR 20210120284 2021.09.09
- Main IPC: G01N29/04
- IPC: G01N29/04 ; G01N29/44 ; G01N33/00

Abstract:
This application relates to an apparatus and method for analyzing the damping characteristics of a carbon composite material. Damping analysis of carbon composite material using modal damping ratio is a conventional method that cannot accurately represent viscous damping coefficient variation but has errors in a sensitivity analysis. The damping characteristics of the carbon composite material were described by a parallel combination of the viscous damping coefficient of carbon fiber and binding matrix. The damping characteristics of the carbon composite material were expressed with the sensitivity index calculated only from the viscous damping coefficient of the carbon fiber by removing the viscous damping coefficient of the binding matrix that does not change depending on the carbon fiber direction. Various embodiments improve accuracy in analyzing the damping characteristics of carbon composite material.
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