• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2022 Fiscal Year Research-status Report

Computational investigation on the efficacy and safety of the lesion preparation devices in calcified coronary artery with a cracking model of calcification

Research Project

Project/Area Number 22K12774
Research InstitutionWaseda University

Principal Investigator

朱 暁冬  早稲田大学, 理工学術院, 次席研究員(研究院講師) (90813650)

Co-Investigator(Kenkyū-buntansha) 岩崎 清隆  早稲田大学, 理工学術院, 教授 (20339691)
Project Period (FY) 2022-04-01 – 2025-03-31
KeywordsCDP model / fracture behavior / EMBC / compression test
Outline of Annual Research Achievements

We successfully tested an available brittle cracking model, concrete damaged plasticity model (CDP), to confirm the fracture behavior of the calcification model using a demo data. The elements of the calcification model were removed when the value of strain reached the failure criteria of tensile strain. It provided a capability for modeling brittle cracking behavior.
We processed a preferable cylindrical analogue material which mechanical property is close to the real calcification and performed experimental tests to obtain the compression stress-strain data.The peak stress is in good agreement with the value of the calcification.
Recent research outcome of the CDP model tested in the numerical simulation will be presented in an international conference EMBC2023 in July.

Current Status of Research Progress
Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

We tested an available brittle cracking model and conducted the compression test to obtain the behavior of the analogue material of calcification. A tensile test also will be performed to acquire the tensile stress-strain data.
However, the cylindrical material is not suitable to be used in the tensile test and we have to modified the shape to ensure a successful tensile test. We are now reconstructing the shape and designing an available clamp to improve the tensile test. The experiment will be conducted in this month and finally both of the tensile and compression data will be obtained to be used in the definition of material property in FEM.

Strategy for Future Research Activity

After obtaining both of the tensile and compression stress-strain data of the analogue material of calcification, the CDP cracking model will be assigned to the FE model. The function of the fracture behavior will be verified and the numerical simulation of expanding cutting balloon model in the calcified artery model will be performed to confirm the pressure at the moment of fracture in comparison with the previous experiment.

Causes of Carryover

Because a tensile test should be improved to ensure a reliable result and we decide to use the incurring amount to purchase a high‐strength adhesive to fix the clamp in the tensile test.

  • Research Products

    (2 results)

All 2022

All Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] Finite element analysis of a cutting balloon and a scoring balloon on efficacy of fracturing calcification and risk of artery injury2022

    • Author(s)
      Xiaodong ZHU, Kiyotaka IWASAKI
    • Organizer
      9th World Congress of Biomechanics 2022
    • Int'l Joint Research
  • [Presentation] 有限要素法を用いた半周性石灰化病変冠動脈モデルにおけるカッティングバルーンの拡張解析2022

    • Author(s)
      朱暁冬、岩﨑清隆
    • Organizer
      第45回日本バイオレオロジー学会年会
    • Invited

URL: 

Published: 2023-12-25  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi