Additive Manufacturing With Strontium Hexaferrite-Photoresist Composite

Ho, Max; Nagaraja, Srinivas P. M.; Tok, Rüştü Umut; Rangchian, Aysan; Kavehpour, Pirouz; Wang, Yuanxun Ethan; Candler, Rob N.

doi:10.1109/tmag.2019.2963184

Cited by 7 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the one hand, increasing the particle fraction results in higher viscosity and helps the printing paste to maintain a geometric fidelity during AM. [22][23][24] On the other hand, the particle fraction is restricted by clogging issues happening inside the printing nozzle. To achieve a good balance between material and process, we incrementally added the particles into the PDMS polymer until getting adequate viscosity.…”

Section: Printing Paste Preparationmentioning

confidence: 99%

3D Printing of Flexible Composites via Magnetophoresis: Toward Medical Application Based on Low‐Frequency Induction Heating Effect

Xiang

Nguyen

Ducharne

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

In this work, a commercial extrusion 3D printer is used to process magnetic pastes into desired 3D structures. The magnetic pastes prepared in the authors' laboratory are mixtures of Fe 3 O 4 (iron oxide), microparticles, and PDMS (polydimethylsiloxane) polymer. After multiple composition tests, they produced pastes compatible with the 3D printer that can be additively manufactured into flexible ferromagnetic samples. The design optimization, together with the characterizations of composites, are investigated. Magnetic particles do not simply mix with the polymer but formed a chain-like structure under the influence of a magnetic field during the printing process. The chain-like structure induces magnetic and thermal anisotropies. The relative permeability and the low-frequency induction heating (LFIH) effect are improved. The authors' development is highly relevant in healthcare applications, especially endovascular ablation for varicose treatment.

show abstract

Section: Printing Paste Preparationmentioning

confidence: 99%

3D Printing of Flexible Composites via Magnetophoresis: Toward Medical Application Based on Low‐Frequency Induction Heating Effect

Xiang

Nguyen

Ducharne

et al. 2021

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…Since the shock absorber is the main shock absorption part, its force will change with the different pavement environment, which makes it difficult to set the load condition and boundary constraint conditions when using finite element analysis [22]. Altair's Inspire software imparts [5,6] simulation power to the digital model of the shock absorber so that the shock absorber can be simulated [23]. In addition, the load loading model can be extracted during the motion process, and then the solver [7] of OptiStruct topology optimization module can be directly invoked during the optimization process [24].…”

Section: Introductionmentioning

confidence: 99%

A Case Study on Structural Optimization Design of Shock Absorber Brackets in Automobile Suspension

Liu,

Pan,

Cui

et al. 2023

IEEE Access

View full text Add to dashboard Cite

For connecting plate of shock absorber bracket in automobile suspension, lightweight requirement is a mainstream design tendency. Based on the principle of maximum stiffness, this work conducts a case study on structural optimization design of shock absorber brackets in automobile suspension. Firstly, both TI-6AL-4V alloy material and the motion simulation function of Inspire software are employed for use in the investigation. It is expected to simulate the motion state of automobile shock absorber extract the load effectively. Hence, the load is applied to the finite element model of the shock absorber connecting plate as the boundary condition. Then, the software is used to explore the shape control method for the connecting plate under different optimization objectives. Also, the topology optimization is carried out on the premise of 2-factor 4-level orthogonal test, and the extrusion is used as the shape control method. Finally, using 8 mm thickness as constraint condition, the optimized structure with safety factor of 2.3 and weight loss rate of 72.6% can be obtained.

show abstract

“…Inkjet-printed one-dimensional arrays of monodisperse Fe 3 O 4 nanoparticles with high anisotropic magnetization with possible applications for magnetic field sensing has been demonstrated in the technical literature [ 17 ]. Composites 3D printed and poled, applying an external magnetic field, utilizing strontium ferrite particles dispersed in SU8 photoresist, have been observed to be suitable for onboard integration of magnetic components in millimeter-wave circuits [ 18 ]. Among the available magnetic materials, ferrite-based magnetic materials have become particularly important for a multitude of applications.…”

Section: Introductionmentioning

confidence: 99%

Rheology-Assisted Microstructure Control for Printing Magnetic Composites—Material and Process Development

et al. 2020

View full text Add to dashboard Cite

Magnetic composites play a significant role in various electrical and electronic devices. Properties of such magnetic composites depend on the particle microstructural distribution within the polymer matrix. In this study, a methodology to manufacture magnetic composites with isotropic and anisotropic particle distribution was introduced using engineered material formulations and manufacturing methods. An in-house developed material jetting 3D printer with particle alignment capability was utilized to dispense a UV curable resin formulation to the desired computer aided design (CAD) geometry. Formulations engineered using additives enabled controlling the rheological properties and the microstructure at different manufacturing process stages. Incorporating rheological additives rendered the formulation with thixotropic properties suitable for material jetting processes. Particle alignment was accomplished using a magnetic field generated using a pair of permanent magnets. Microstructure control in printed composites was observed to depend on both the developed material formulations and the manufacturing process. The rheological behavior of filler-modified polymers was characterized using rheometry, and the formulation properties were derived using mathematical models. Experimental observations were correlated with the observed mechanical behavior changes in the polymers. It was additionally observed that higher additive content controlled particle aggregation but reduced the degree of particle alignment in polymers. Directionality analysis of optical micrographs was utilized as a tool to quantify the degree of filler orientation in printed composites. Characterization of in-plane and out-of-plane magnetic properties using a superconducting quantum interference device (SQUID) magnetometer exhibited enhanced magnetic characteristics along the direction of field structuring. Results expressed in this fundamental research serve as building blocks to construct magnetic composites through material jetting-based additive manufacturing processes.

show abstract

Additive Manufacturing With Strontium Hexaferrite-Photoresist Composite

Cited by 7 publications

References 31 publications

3D Printing of Flexible Composites via Magnetophoresis: Toward Medical Application Based on Low‐Frequency Induction Heating Effect

3D Printing of Flexible Composites via Magnetophoresis: Toward Medical Application Based on Low‐Frequency Induction Heating Effect

A Case Study on Structural Optimization Design of Shock Absorber Brackets in Automobile Suspension

Rheology-Assisted Microstructure Control for Printing Magnetic Composites—Material and Process Development

Contact Info

Product

Resources

About