News

A new, nature-inspired self-healing rubber developed by Prof. Li and his collaborators from USC.

A severed 3D-printed shoe pad repairing itself (Submitted Photo/An Xin and Kunhao Yu)

A new paper published by Prof. Ying Li and his collaborators from University of Southern California in NPG Asia Materials provide the details of a new class of self-healing rubber that is inspired by the healing of natural tissues.

For more details, please see the news article from UConn Today.

 

 

Jiong Tang to serve as the General Chair for ASME IDETC & CIE 2019

Prof. Jiong Tang will serve as the general conference chair for the American Society of Mechanical Engineers’ international annual design conference in Anaheim CA. The 2019 ASME International Design Engineering Technical Conference (IDETC) and Computers and Information in Engineering Conference (CIE) will take place between August August 18 – 21, 2019  at the Anaheim Convention Center.

Dan Wang and Professor Xu Chen win Best Paper Award at the 2018 International Symposium on Flexible Automation

ME graduate student Dan Wang and Professor Xu Chen won the Best Paper (Theory) of the 2018 International Symposium on Flexible Automation (ISFA) for their paper titled “Synthesis and Analysis of Multirate Repetitive Control for Fractional-order Periodic Disturbance Rejection in Powder Bed Fusion.”

The ISFA started in 1986 under the co-sponsorship of the American Society of Mechanical Engineers (ASME) and the Institute of Systems, Control and Information Engineers (ISCIE) in Japan. The symposium focuses on automation technologies that are essential to meet the increasing requirements of modern manufacturing and other related fields, such as dynamical systems, robotics, logistics, biomedical systems, and healthcare systems.

The 2018 symposium was held in Kanazawa, Japan from July 15 to July 19. Every year the symposium recognizes two best papers appearing in the Proceedings and presented at the Symposium. One award emphasizes contribution to theory, and the other emphasizes significant or innovative applications/practice. Criteria for selection include the quality of the written and oral presentation, the technical contribution, timeliness, and practicality. Each award consists of a certificate and an honorarium of $1,000.

Wang and Chen’s paper discusses control approaches to advance the quality of repetitive energy deposition in powder bed fusion (PBF) additive manufacturing, pertaining specifically to the repetitive deposition of the laser or electron beam energy. It addresses an intrinsic limitation in control schemes that can leverage the periodicity of task patterns to significantly improve system performance. The long-term impacts will include greater quality assurance of the manufactured parts, new capabilities for large-scale 3D printing of extreme materials, and smarter machines and automation in additive manufacturing processes.

Strain Improves Performance of Atomically Thin Semiconductor Material

Dr. Michael Pettes and his graduate student Wei Wu have significantly improved the performance of an atomically thin semiconductor material by stretching it, an accomplishment that could prove beneficial to engineers designing the next generation of flexible electronics, nano devices, and optical sensors. The findings mark the first time scientists have been able to conclusively show that the properties of atomically thin materials can be mechanically manipulated to enhance their performance, Pettes says. Such capabilities could lead to faster computer processors and more efficient sensors.  The process the researchers used to achieve the outcome is also significant in that it offers a reliable new methodology for measuring the impact of strain on ultrathin materials, something that has been difficult to do and a hindrance to innovation.  More information is available at UConn Today:  http://s.uconn.edu/4ad

Profs. Chen and Norato win coveted 2018 NSF CAREER awards for their work on Additive Manufacturing and Topology Optimization

Two ME professors received the 2018 National Science Foundation’s CAREER award, which is the Foundation’s most prestigious award in support of early-career faculty.

Prof. Xu Chen’s award will support his research on thermal modeling, sensing, and controls to enable new generations of powder bed fusion (PBF) additive manufacturing. In contrast to conventional machining, where parts are made by cutting away unwanted material, additive manufacturing — also called 3D printing — builds three-dimensional objects of unprecedented complexity by progressively adding small amounts of material. PBF is a popular form of AM for fabricating complex metallic or high-performance polymer parts. This CAREER project will create new knowledge critical for substantially higher accuracy and greater reproducibility in PBF and AM. Building on innovations to model and control the thermal mechanical process, the research will illuminate ways to mitigate quality variations on the fly, and provide new feedback-centric control paradigms to engineer the layered deposition of thermal energy, which is imperative for quality and reproducibility. PBF parts are increasingly preferred in applications ranging from advanced jet-engine components to custom-designed medical implants. The outcomes of this project will facilitate fabrication of products to benefit the US economy and improve quality of life. More broadly, methods and tools developed from this research has the potential to drastically impact the manufacturing of a wide range of components for the energy, aerospace, automotive, healthcare, and biomedical industries that can benefit from short-run high-quality production.

Prof. Norato’s award will support fundamental research to formulate a design framework to systematically incorporate geometric design rules and manufacturing cost considerations into the computational design of structures. In particular, the techniques advanced in this project belong to a group of techniques called topology optimization, in which a computer program finds the optimal shape of a structural component or an architected material. This research will enable the conceptual design and optimization of lightweight, high-performance, and economically-viable structures with applications across a wide range of engineering industries. The new design capabilities will have the potential to significantly reduce manufacturing and R&D costs and thereby increase the economic competitiveness of American manufacturers. Prof. Norato is also a recipient of the 2017 ONR Young Investigator Award.

Both awards are for five years and approximately $500,000 (minimum), and have an outreach component towards K-12 students and people from underrepresented communities.