Ultrasonic propagation properties in magnetic functional fluids under magnetic fields

磁场下磁功能流体的超声波传播特性

• 批准号: 21560186
• 负责人: SAWADA Tatsuo
• 金额: $ 3万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21560186/
• 关键词: 磁性流体; MR流体; 超音波; クラスター; 音速; クラスタ; ダクト内流れ

Magnetic fluids(MF) and magnetorheological fluids(MRF) are stable colloidal dispersion of small magnetic particles in a liquid carrier. When an external magnetic field is applied to an MF or MRF, some of the inner particles coagulate and form a clustering structure. Usual conventional measuring technique cannot be applied because MF and MRF are opaque. In this study, measurement of ultrasonic propagation velocity in each of MF and MRF were reported precisely. Based on these results, the clustering structures of these fluids were analyzed and the application of non-contact inspection in these fluids by ultrasonic techniques was discussed.

磁流体（MF）和磁流变流体（MRF）是小磁性颗粒在液体载体中的稳定胶体分散体。当外部磁场施加到MF或MRF时，一些内部颗粒凝结并形成聚集结构。由于MF和MRF是不透明的，因此无法应用传统的测量技术。在这项研究中，超声波传播速度的测量在每个MF和MRF精确报告。在此基础上，分析了这些流体的聚集结构，并讨论了超声技术在这些流体非接触检测中的应用。

项目成果

Behavior of MR Fluid under a Uniform Magnetic Field Subjected to an Impact Load

受到冲击载荷的均匀磁场下 MR 流体的行为

• 发表时间: 2011
• 作者: Ahmad Isnikurniawan;Hiromichi Ohba;Yoshitaka Moroka;Tatsuo Sawada
• 通讯作者: Tatsuo Sawada

Ultrasonic investigation of the effect of volume fraction on the clustering structures of magneto-rheological fluids

体积分数对磁流变液团簇结构影响的超声研究

• 发表时间: 2011
• 期刊: Materials Science Forum
• 作者: 根本篤;田中雅人;佐藤光太郎;武沢英樹;横田和彦;Muhammad Agung Bramantya
• 通讯作者: Muhammad Agung Bramantya

Study of ultrasonic wave propagation on magnetorheologicalfluid with different frequency

不同频率超声波在磁流变流体中传播的研究

• 发表时间: 2010
• 作者: Ahmad Isnikurniawan;Hiromichi Ohba;Yoshitaka Moroka;Tatsuo Sawada;Ahmad Isnikurniawan;澤田達男;Muhammad Agung Bramantya;Muhammad Agung Bramantya
• 通讯作者: Muhammad Agung Bramantya

Dynamic pressure change of a magnetic fluid in a lateral oscillating container

横向振荡容器内磁性流体的动态压力变化

• 发表时间: 2012
• 期刊: 日本AEM学会誌
• 作者: Shunsuke Kaneko;Jean Klingler;Takayoshi Ishiyama and Tatsuo Sawada
• 通讯作者: Takayoshi Ishiyama and Tatsuo Sawada

Damping Characteristic of MR Fluid Under Shock Loading

磁流变液冲击载荷下的阻尼特性

• 发表时间: 2011
• 作者: Ahmad Isnikurniawan;Yoshikata Moroka;Hiromichi Ohba;Hiro Kaneko;Tatsuo Sawada
• 通讯作者: Tatsuo Sawada