Seminars in Materials Science and Engineering
LONG TERM AGING CHARACTERISTICS OF
POST-CONSUMER RECYCLED (PCR) POLYCARBONATES FOR CONSUMER HARDWARE
Rashed Islam, Ph.D.
Group Manager, Lyft Co.
Friday, September 2, 2022, 12:00 - 1:00p.m. WH404
Abstract: Plastics are a versatile class of materials which can be found in products ranging from single-use packaging to components used in automotive and durable goods. Unfortunately, plastics are also identified as an environmental pollutant due to inadequate recycling rates and poor end-of-life waste management. According to the EPA, recycled plastics account for far less environmental impact than their virgin counterparts. Studies suggest recycled plastics contain over 25% fewer greenhouse/carbon gas emissions than virgin resins. To meet the sustainability target, physics of failure based aging studies at various use case scenarios were carried out to correlate the mechanical properties of PCR polycarbonates (PC) and corresponding system level reliability performance. In this presentation, the effect of molding conditions, % PCR content, melt flow rate and various secondary processes on the mechanical properties of PCR along with a fractography analysis will be discussed. Finally, we will try to answer the question “Can Recycled Plastics be used in consumer and micro mobility hardware?” Although there are many factors associated with completely answering this question, the factor which we will be evaluating in this presentation is “Strength”.
Biography: Dr. Rashed Islam is the Group Manager (Head) of HW Reliability at Lyft Transit Bikes and Scooters (TBS). His group is responsible for the product reliability for the micro mobility devices (E-Bikes, E-Scooters, Stations etc.) and spearheading the effort for implementing the sustainable materials into the products. Previously Rashed was the Technical Lead Manager at Google Devices and Services (2014 – 2022) where he was responsible for the End-to-End Product Reliability for the award-winning Nest Smart home and Augmented Reality Devices. He led the Sustainable Materials Reliability efforts for Google’s consumer HW. Rashed has more than 15 years of industry experience in reliability engineering, failure analysis, and materials development (recycled plastics, Pb free solder, piezoelectric, and magnetoelectric materials). Before Google, Rashed worked on E-readers and Tablets (at Amazon Lab126), LEDs (at Philips Lumileds) and Energy Harvesters and Dielectric Antennas (at Eoplex Technologies Inc). Rashed completed his PhD in Materials Science and Engineering from University of Texas at Arlington in 2008 and has published more than 50 Journal/Conference publications/Book chapters and 2 US patents. Rashed was identified as Top Talent in Google Nest (2017), received prestigious “Product Excellence”, “Best Root Cause Analysis” in 2018 and “Product Integrity Engineering Value” awards in 2020 and 2021.
Integrating Multiscale Modeling and Machine Learning: Design, Analysis and Manufacturing of
Advanced Materials and Structures
Xin Liu, Assistant Professor
Department of Industrial, Manufacturing, & Systems Engineering, UTA
Friday, October 8, 2021
"Intelligent" and Practical Machine Learning in Materials Science
Joshua C. Agar, Ph.D.
Assistant Professor Department of Materials Science and Engineering Lehigh University
September 24, 2021
Problem Solving in Engineering
Associate Fellow Lockheed Martin Corporation
September 17, 2021
UTA Characterization Center for Materials and Biology: Capabilities down to Atomic Scale Characterization, Using Policies and Procedures
Jiechao Jiang, Ph.D.
Professor of Research, CCMB Facility Manager Department of Materials Science and Engineering, UTA
September 10, 2021
Challenges to Ensure Dependability of Hot Section Turbine Components of Modern Jet Engines
Randall Kelton, Ph.D.
Pratt & Whitney
November 22, 2019
Challenges and opportunities to modelling and measuring mass and energy exchanges at the land-atmosphere interface interweaving experimental and modeling approaches
Kathleen Smits, Ph.D.
Associate Professor, Civil Engineering Department, The University of Texas at Arlington
October 25, 2019
Multifunctional crystalline oxides on semiconductors: elevating the semiconductor-oxide heterojunction beyond the MIS paradigm
Joseph Ngai, Ph.D.
Associate Professor, Physics Department, The University of Texas at Arlington
October 17, 2019
Designing Soft and Elastic Materials in Biomedicine
Yi Hong, Ph.D.
FAHA, Associate Professor, Bioengineering Department University of Texas at Arlington
October 11, 2019
Smart Construction Materials: New Functionalities and Nanotechnology
Dr. Maria S. Konsta-Gdoutos
Professor, Department of Civil and Environmental Engineering, University of Texas at Arlington
October 04, 2019
Heterogeneous Deformation and its Influence on Magnetic Flux Trapping in Superconducting Radio Frequency Cavities for Particle Accelerators
Thomas Bieler, Ph.D.
Professor, Materials Science and Engineering, Michigan State University
September 20, 2019
The Challenge of Taming the Hostile Aerothermal Environment
David Hunn, Ph.D., Lockheed Martin Missiles and Fire Control
September 13, 2019
UTA Characterization Center for Materials and Biology: Capabilities down to Atomic Scale Characterization, Facility Policies and Procedures
Jiechao Jiang, Ph.D.
Professor of Research, Facility Manager of the UTA Characterization Center for Materials and Biology, The University of Texas at Arlington
September 06, 2019
Understanding Meso- and Macro-scale Reaction Non-uniformity in Lithium Battery Electrodes
Ming Tang, Ph.D.
Assistant Professor, Department of Materials Science and NanoEngineering, Rice University
May 30, 2019
Large Area Solid-State Radiation Detectors
Manuel Quevedo, Ph.D.
Professor, Department of Materials Science and Engineering, University of Texas at Dallas
March 08, 2019
Manufacturing of Sustainable Composites and Coatings
Cristiane Reis Martins, Ph.D.
Associate Professor, Chemical Engineering, Federal University of São Paulo (UNIFESP)
February 22, 2019
Optofluidic droplet lasers and opportunities in point-of-care testing
Yuze (Alice) Sun, Ph.D., Assistant Professor, Department of Electrical Engineering, The University of Texas at Arlington
November 16, 2018
A Chemists Approach to Exploring Rare-Earth Chalcogenide Materials for Photoelectrochemical and Photocatalytic Applications
Robin T. Macaluso, Ph.D.
Associate Professor, Department of Chemistry and Biochemistry, University of Texas at Arlington
November 09, 2018
Learning the mesoscopic and atomic physics of ferroelectrics: imaging and big data
Sergei V. Kalinin, Ph.D.
Director, Institute for Functional Imaging of Materials. Oak Ridge National Laboratory, Oak Ridge, Tennessee
October 26, 2018
Advanced Nanostructured Materials for Harnessing Solar Energy
Jung-Kun Lee, Ph.D.
Professor and William Kepler Whiteford Faculty Fellow Department of Mechanical Engineering and Materials Science, University of Pittsburgh
October 19, 2018
Additively manufactured superelastic NiTi: a paradigm shift to eliminate heat treatment
Narges Shayesteh, Ph.D., Assistant Professor, Mechanical and Aerospace Engineering Department
October 05, 2018
Fabrication of Self-assembling Antimicrobial Nanofibers Via Peptide Self-assembly
He Dong, Ph.D.
Associate Professor, Department of Chemistry and Biochemistry, The University of Texas at Arlington
September 28, 2018
Light Conversion in Nanocrystal/2D Semiconductor Hybrids
Anton Malko, Ph.D.
Associate Professor of Physics and Materials Science The University of Texas at Dallas
September 14, 2018
Printing Tissues: The Future is Now
Venu Varanasi, Ph.D.
Associate Professor, Department of Graduate Nursing, Department of Materials Science and Engineering
September 07, 2018
UTA Characterization Center for Materials and Biology (CCMB): Capabilities down to Atomic Scale Characterization Usage Policies and Procedures
Jiechao Jiang, Ph.D.
Research Professor in MSE and the facility manager of the CCMB
August 31, 2018
Microscopic Insights into Conductivity and Stability of Solid Electrolyte Interfaces
Miaofang Chi, Ph.D
. Senior Staff Scientist, Center of Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN
April 13, 2018
Failure Mechanisms of Sandwich and Cellular Materials
E.E. Gdoutos, Ph.D.
Full Member, Academy of Athens; Adjunct Professor, Northwestern University; Distinguished Clark Millikan Visiting Professor, California Institute of Technology
August 30, 2013
Defect Engineered Complex Oxide Thin Films with Anomalous Multifunctionalities
Chonglin Chen, Ph.D.
Professor, Department of Physics & Astronomy University of Texas at Arlington; Joint Professor, Center for Superconductivity, University of Houston
August 23, 2013
Manufacturing Innovation and Catalysis (MAGIC) Laboratory
Leila Ladani, Ph.D., Professor, Mechanical and Aerospace Engineering, University of Texas at Arlington
March 09, 2018
Origin of Macroscale Superlubricity in Carbon Nanomaterials
Diana Berman, Ph.D., Department of Materials Science and Engineering, University of North Texas
March 02, 2018
R&D in the Oilfield: Technical Challenges in Unconventionals
Megen Maginot, Ph.D., Optimization Engineer, ConocoPhillips; Houston, Texas
February 23, 2018
Exploration of Nanoparticle Based Photodynamic Therapy for Cancer Treatment
Wei Chen, Ph.D., Nano-Bio Physics, Department of Physics, University of Texas at Arlington, Texas
February 16, 2018