Resonetics’ Post

Are there intelligent molecules to use in polymers as properties' buffers? When polymers are subjected to sudden temperature changes, a new molecule used as an additive promises to keep their mechanical properties. This molecule could, for instance, prevent epoxy potting failures or adhesive aging caused by sudden temperature changes. As this new molecule is dropped into diverse polymeric systems, many other applications are possible. https://lnkd.in/e9TTfytt

Our recent publication in the Materials Science in Additive Manufacturing (https://lnkd.in/eWBtK3FH) journal is focused on multi-material structures of Ti6Al4V and Ti6Al4V-B4C via directed energy deposition (DED)-based additive manufacturing (AM). DED-based metal AM was used to manufacture radial multi-material structures, keeping Ti6Al4V (Ti64) in the core and Ti6Al4V-5 wt% B4C composite as the outer layer. X-ray diffraction (XRD) analysis and microstructural observation show distinct B4C particles strongly attached to the Ti6Al4V matrix. The addition of B4C increased the average hardness from 313 HV for Ti6Al4V to 538 HV for the composites. The addition of 5 wt% B4C in Ti6Al4V increased the average compressive Yield strength (YS) to 1440 MPa from 972 MPa for the control Ti6Al4V, >48% increase without any significant change in the elastic modulus. The radial multi-material structures showed no change in the compressive modulus compared to Ti6Al4V but increased the average compressive YS to 1422 MPa, >45% increase over Ti6Al4V. Microstructural characterization revealed a smooth transition from the pure Ti6Al4V at the core to the Ti64-B4C composite outer layer. No interfacial failure observed during compressive deformation indicates a strong metallurgical bonding during multi-materials radial composite processing. Our results show that a significant improvement in mechanical properties can be accomplished in one AM build operation through designing innovative multi-material structures using DED-based AM. The full-text article can be accessed at https://lnkd.in/eiKdmD3q Full citation – Nathaniel W. Zuckschwerdt, Amit Bandyopadhyay. Multi-material structures of Ti6Al4V and Ti6Al4V-B4C through directed energy deposition-based additive manufacturing. MSAM 2024, 3(3), 3571. https://lnkd.in/eYB8GRNe #additivemanufacturing #3dprinting #wsu #metallurgy #msecoug #implants #Titanium  

𝐂𝐨𝐧𝐝𝐮𝐜𝐭𝐢𝐧𝐠 𝐏𝐨𝐥𝐲𝐦𝐞𝐫𝐬: 𝐀 𝐂𝐨𝐦𝐩𝐫𝐞𝐡𝐞𝐧𝐬𝐢𝐯𝐞 𝐑𝐞𝐯𝐢𝐞𝐰 𝐨𝐧 𝐑𝐞𝐜𝐞𝐧𝐭 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐬 Conductive polymers has gained significant traction in recent years, and their applications in material science. A conductive polymer is a type of polymer material that exhibits electrical conductivity, offering versatility and potential applications in various industries. Download PDF Brochure: 👉 https://bit.ly/4eaqycg Conductive polymer is a class of intrinsically conductive polymer (ICP) that conducts electricity. Conductive polymer exhibits electrical and optical properties similar to that of metals and inorganic semiconductors. It can be engineered to be biodegradable, biocompatible, and porous. It is widely used in the diode, microelectronics industry, diodes, electrochromic display, batteries, and photovoltaics. Antistatic packaging & coating, solar cell and polymer capacitor are the major areas of expansion for conductive polymer market due to growing demand for conductive polymer in the manufacturing of these. The applications covered in the study comprise anti-static coatings, photographic film, solar cell, display screen, polymer capacitors, LED lights, and others. #material #polymer #condustivepolymer #polymerindustry #packaging #solarcell #chemical

Happy to share some research I have helped develop in low-temperature additive manufacturing of silica-glass composites. This is published in ACS materials letters. This is an approach to make fully inorganic silica composites at room temperature. Attached is the pdf of the document for access. #additivemanufacturing #materialsresearch

Everyone knows the benefits of #carbon-fiber reinforced #composites: light weight, high strength, and high stiffness material properties. Now, one of it's biggest disadvantages has been addressed by the U.S. Department of Energy (DOE)'s Oak Ridge National Laboratory: the single-use nature of CFRPs. When traditional #thermoset #resins are used for carbon-fiber composites, you generally have one-shot to shape and cure the work piece. Once hardened, thermoset plastics can't be reformed (or #recycled) into new shapes or parts. Now, thanks to chemists like Md Anisur Rahman of ORNL, a new closed-loop process has been developed to create CFRPs that can be reshaped many times without losing mechanical properties. "We incorporated dynamic crosslinking into a commodity polymer to functionalize it. Then, we added a crosslinker to make it like thermoset materials," said ORNL chemist and inventor Md Anisur Rahman. "Dynamic crosslinking allows us to break chemical bonds and reprocess or recycle the carbon fiber composite materials." Read more here: https://lnkd.in/gRmtPsKa

Surfaces matter! Aculon has a wide variety of technologies at our disposal meaning that we can treat nearly any surface or substrate. This includes, but is not limited to metals, polymers, semiconductors, ceramics, and glass. The type of substrate will impact the technology options which can be utilized in addition to cleaning or other processing steps that may be required. In general due to the presence of a surface oxide layer, we find the highest likelihood of success with metals, ceramics, glass, and semiconductors. Click here to learn more: https://lnkd.in/eQ_tMVkN

I am delighted to share our new article entitled "The role of fillers to enhance the mechanical, thermal, and wear characteristics of polymer composite materials: A review" published in Composite Part A: Appl. Sci. & Manufacturing. https://lnkd.in/g-VbwgNU

PDF Manufacturing techniques for polymer matrix composites Suresh G. Advani, Kuang-Ting Hsiao digsell https://lnkd.in/eHn8qJPe Polymer matrix composites are used extensively across a wide range of industries, making the design and development of effective manufacturing processes of great importance. This book aims at presenting state-of-the-art yet comprehensive knowledge of selected commonly used or emerging composite manufacturing processes. Each chapter, written by an expert of that process, first describes the process and provides physics insights and then introduces the corresponding models and scientific understanding. The manufacturing processes are grouped into three parts based on their processing characteristics or physics. The beginning section discusses the two commonly used polymer processes used for composite manufacturing: injection molding and … Read More » https://lnkd.in/edzfz-vD

I am delighted to share that our review article titled "Micromachining of alumina ceramic for microsystems applications: a systematic review, challenges and future opportunities" has been published in the "Materials and Manufacturing Processes." The eprint link for free access is available with the following link: https://lnkd.in/dARtGqwY This review article presents the current status of various micromachining techniques used to create microfeatures in alumina ceramic. This review article comprehensively summarizes various micromachining methods used to create microfeatures in alumina ceramics. The mechanism, unique features, pros/cons, novelty, and applications of ultrasonic machining, laser ablation, electrochemical discharge machining, abrasive-jet machining, etc., are presented. The associated processing challenges in various alumina micromachining and the potential remedies to produce high-quality alumina microparts for microelectronics applications are discussed. #alumina #mems #packaging #microsystems #micromachining #microfabrication #iitbombay

Our Recent Paper…. Optimized surface-type impedimetric and capacitive proximity sensors have been fabricated on paper substrates by using rubbing-in technology. The orange dye (OD) and silicone glue (SG) composite-gel films were deposited on the zig-zag gap between two aluminum electrodes fixed on a paper (dielectric) substrate. The effect of proximity of various objects (receivers) on the impedance and the capacitance of the sensors was investigated. These objects were semi-cylindrical aluminum (metallic) foil, a cylindrical plastic tube filled with water, a kopeck-shaped plastic tube filled with carbon nanotubes and a human finger. The mechanism of sensing was based on the change in impedance and/or the capacitance of the sensors with variation of proximity between the surfaces of the sensor and the object. On decreasing proximity, the impedance of the sensors increased while the capacitance decreased. The impedimetric proximity sensitivities of CNT, water, metal-based receivers and the finger were up to 60 × 103 Ω/mm, 35 × 103 Ω/mm, 44 × 103 Ω/mm and 6.2 × 103 Ω/mm, respectively, while their capacitive sensitivities were −19.0 × 10−2 pF/mm, −16.0 × 10−2 pF/mm, −16.4 × 10−2 pF/mm and −1.8 × 10−2 pF/mm. If needed for practical application, the sensors can be built in to the Wheatstone bridge, which can also increase the sensitivity of the measurement. Moreover, the sensor’s materials are low cost, while the fabrication technique is easy and ecologically friendly. The sensor can also be used for demonstrative purposes in school and college laboratories.