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Seminar Reminder for Licong An's Preliminary Exam Seminar. Monday, January 13, at 10:30 a.m., in ARMS 1028 Gallium-Based Liquid Metal Processing and its Applications"
by Son, Rosemary E 10 Jan '20

10 Jan '20

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Gallium-Based Liquid Metal Processing and its Applications" By Licong An Purdue MSE Preliminary Exam Advisors: Professor Gary J. Cheng and Professor David Johnson ABSTRACT Gallium-based liquid metals have received widespread attention in the scientific community over the past few years due to their good fluidity, high electrical conductivity and low toxicity, especially for applications of stretchable and wearable electronic devices. At the same time, electronic devices have ever smaller and smaller volumes, their increasing density places higher demands on conductive patterns design. Thus, more advanced ways to manufacture liquid metal nano/micro structures are needed to meet the superior performance of electronic devices. The main reason that gallium-based liquid metal can be patterned is that a stable oxide thin film can be formed on the interface of liquid metal, which changes the rheological and wettability of liquid metal. Due to this oxide film, liquid metal can be fabricated into nano-/ micro-structures via different processing methods including casting, printing and sintering. This review discusses various methods for processing gallium-based liquid metal alloys and their merits, as well as typical applications of this related field of research. Date: Monday, January 13, 2020 Time: 10:30 A.M. Place: ARMS 1028 PURDUE MSE [cid:image004.png@01D5C7D9.D264CDF0] School of Materials Engineering Purdue University Neil Armstrong Hall of Engineering 701 West Stadium Ave. Room 2200 West Lafayette, IN 47907 765-494-4105 [PU150]

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Seminar Reminder for S. Crandel Fenton's Preliminary Exam. Thursday, Jan. 9, at 10:00, in ARMS 1021 " Glue, Thiourea, and Chloride Additives in the Copper Electrorefining Process"
by Son, Rosemary E 08 Jan '20

08 Jan '20

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Glue, Thiourea, and Chloride Additives in the Copper Electrorefining Process" By S. Crandel Fenton Purdue MSE Preliminary Exam Advisor: Professor Matthew J. M. Krane ABSTRACT Electrorefining is a process used to extract high purity metals and remove impurities and unwanted contaminates. The basic equipment design is that a less pure anode is electrically connected to a plating cathode for the high purity deposition. Both are submerged in a cell containing continuous flowing electrolyte solution. The electrical current that is applied to the refining cell causes the degradation of the anode and the metal, in this case copper, is dissolved in the electrolyte solution and then plated on the cathode surface.[1] A part of the electrolyte that can vary throughout the industry are the use of additives. These additives serve to correct cathode production quality roughness and prevent contaminate, present in either the anode or the electrolyte solution, deposition. Insight into the effects of different combination of these additives can provide a higher quality production of pure copper cathodes. By creating these smooth dense cathodes, overall energy requirements, and costs of further processing can be minimized. Therefore control over additives and understanding the effects of varying concentration with respect to total concentration in the electrolyte, as well as in respect to each other, is required to optimize the electrorefining process. Date: Thursday, January 9, 2020 Time: 10:00 A.M. Place: ARMS 1021

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MSE Staffing Changes
by Stacey, Lisa A 08 Jan '20

08 Jan '20

Forwarding on behalf of David Bahr, Materials Engineering Head and Professor: ________________________________ I am pleased to announce that Rosemary Son is our new Academic Graduate Advisor for the School of Materials Engineering. Rosemary’s previous experience as administrative assistant/graduate coordinator, and additional cross-training with Vicki for academic advising promises a smooth transition as she assumes her new role. Rosemary’s new office is conveniently located in the ARMS graduate office area, (ARMS 2217). In addition, we welcome Cathy Noerenberg to Materials Engineering as our new Administrative Assistant, to be located at Rosemary’s former desk (ARMS 2200). Cathy’s experience with Purdue working with Jan-Anders Mansson, at the Composite Manufacturing and Simulation Center, and previous graduate coordinating in Computer Graphics Technology, among other roles, make her a great asset to MSE. Cathy’s first day with MSE is next Monday, January 13th. Graduate students, as we move all the advising duties for grad students to Rosemary there will be a transition time until all the files are moved. Please check with Rosemary first as you need information about forms and files, and there will be some overlap during the change-over. By having two advisors for the school our UG and Grad advising can be smoother and more continuous as both Vicki and Rosemary can provide backup for each other. ________________________________ Lisa Stacey Administrative Assistant to the Department Head Purdue University School of Materials Engineering Neil Armstrong Hall of Engineering 765/494-4095 staceyl(a)purdue.edu<mailto:staceyl@purdue.edu> [https://www.purdue.edu/brand/images/Purdue_University-150_Years_of_Giant_Le…]

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MSE Seminar: Arun Kumar Mannodi Kanakkithodi, Thur. Jan. 16th, 9:15 am, ARMS B071
by Stacey, Lisa A 07 Jan '20

07 Jan '20

Your attendance is appreciated for Materials Engineering's faculty candidate, Dr. Arun Kumar Mannodi Kanakkithodi's seminar next Thursday, January 16th, 9:15-10:15 am in ARMS Rm. B071. [cid:image003.jpg@01D5C577.F07AAFD0] Thank you, Lisa Stacey Administrative Assistant to the Department Head Purdue University School of Materials Engineering Neil Armstrong Hall of Engineering 765/494-4095 staceyl(a)purdue.edu<mailto:staceyl@purdue.edu> [https://www.purdue.edu/brand/images/Purdue_University-150_Years_of_Giant_Le…]

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Seminar Notice for Alfredo Ocegueda Barraza's Preliminary Exam. Thursday, January 16, at 2:00, in HAMP 3144. "Tow Steering of Composite Prepregs During Automated Fiber Placement"
by Son, Rosemary E 03 Jan '20

03 Jan '20

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Tow Steering of Composite Prepregs During Automated Fiber Placement" By Jose Alfredo Ocegueda Barraza Purdue MSE Preliminary Exam Advisor: Professor R. Byron Pipes ABSTRACT The enhancement of strength in composite parts is feasible through local reinforcement. Automated tape laying is a manufacturing technique that allows the placement of fibers matching the path, where the load may traverse the structure, by tow steering. The purpose of the present work is to present an insight into the steering of Carbon Fiber Reinforced Polymers (CFRP) pre- impregnated tapes during automated tape placement. Defects such as wrinkles, folding, blisters, gaps, and overlaps are developed during the process. The effects of temperature, consolidation pressure, the tension on the tape, and laying speed on the formation of defects are discussed. The minimum radius of curvature without the presence of defects during tow steering is limited by the stress state developed during deposition, as fibers cannot stretch to fit specific paths. Existing approaches to estimate and mitigate such defects are reviewed, along with the remaining challenges associated with this research field. Date: Thursday, January 16, 2020 Time: 2:00 P.M. Place: HAMP 3144

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Seminar Notice for Licong An's Preliminary Exam Seminar. Monday, January 13, at 10:30 a.m., in ARMS 1028 Gallium-Based Liquid Metal Processing and its Applications"
by Son, Rosemary E 03 Jan '20

03 Jan '20

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Gallium-Based Liquid Metal Processing and its Applications" By Licong An Purdue MSE Preliminary Exam Advisors: Professor Gary J. Cheng and Professor David Johnson ABSTRACT Gallium-based liquid metals have received widespread attention in the scientific community over the past few years due to their good fluidity, high electrical conductivity and low toxicity, especially for applications of stretchable and wearable electronic devices. At the same time, electronic devices have ever smaller and smaller volumes, their increasing density places higher demands on conductive patterns design. Thus, more advanced ways to manufacture liquid metal nano/micro structures are needed to meet the superior performance of electronic devices. The main reason that gallium-based liquid metal can be patterned is that a stable oxide thin film can be formed on the interface of liquid metal, which changes the rheological and wettability of liquid metal. Due to this oxide film, liquid metal can be fabricated into nano-/ micro-structures via different processing methods including casting, printing and sintering. This review discusses various methods for processing gallium-based liquid metal alloys and their merits, as well as typical applications of this related field of research. Date: Monday, January 13, 2020 Time: 10:30 A.M. Place: ARMS 1028 PURDUE MSE [cid:image003.png@01D5C24A.F0A48560] School of Materials Engineering Purdue University Neil Armstrong Hall of Engineering 701 West Stadium Ave. Room 2200 West Lafayette, IN 47907 765-494-4105 [PU150]

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Seminar Notice for S. Crandel Fenton's Preliminary Exam. Thursday, Jan. 9, at 10:00, in ARMS 1021 " Glue, Thiourea, and Chloride Additives in the Copper Electrorefining Process"
by Son, Rosemary E 02 Jan '20

02 Jan '20

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Glue, Thiourea, and Chloride Additives in the Copper Electrorefining Process" By S. Crandel Fenton Purdue MSE Preliminary Exam Advisor: Professor Matthew J. M. Krane ABSTRACT Electrorefining is a process used to extract high purity metals and remove impurities and unwanted contaminates. The basic equipment design is that a less pure anode is electrically connected to a plating cathode for the high purity deposition. Both are submerged in a cell containing continuous flowing electrolyte solution. The electrical current that is applied to the refining cell causes the degradation of the anode and the metal, in this case copper, is dissolved in the electrolyte solution and then plated on the cathode surface.[1] A part of the electrolyte that can vary throughout the industry are the use of additives. These additives serve to correct cathode production quality roughness and prevent contaminate, present in either the anode or the electrolyte solution, deposition. Insight into the effects of different combination of these additives can provide a higher quality production of pure copper cathodes. By creating these smooth dense cathodes, overall energy requirements, and costs of further processing can be minimized. Therefore control over additives and understanding the effects of varying concentration with respect to total concentration in the electrolyte, as well as in respect to each other, is required to optimize the electrorefining process. Date: Thursday, January 9, 2020 Time: 10:00 A.M. Place: ARMS 1021

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Seminar Reminder for Amelia Leenig's Preliminary Exam. Seminar: Friday, Dec. 20, at 9:00 a.m., in ARMS 1103
by Son, Rosemary E 19 Dec '19

19 Dec '19

Please consider attending the following: MATERIALS ENGINEERING SEMINAR "Material Effects on the Performance of Athletic Cleated Shoe Stubs" By Amelia G. X. Leenig Purdue MSE Preliminary Exam Advisor: Professor Weinong Chen ABSTRACT Athletic cleated shoes are used in a wide variety of sports such as soccer, ultimate frisbee, lacrosse, football, baseball, etc. Most of the injuries in these sports occur without multiple player contact. Instead, translational and rotational friction interactions between shoe soles, feet, and playing surfaces can cause injuries to athletes. Cleat stub components play a large role in determining traction and friction characteristics of athletic cleated shoes. Therefore, it is important to understand how cleat stubs affect athletes' performance and how the material and physical properties change with increased use and aging. Cleat stubs are generally made of a polyether based thermoplastic polyurethanes (TPU). Degradation of TPU material properties occurs when exposed to UV-rays or elevated air temperatures for extended time periods. Surface characteristics are primarily affected when a TPU is experiencing fatigue or creep while aged in an oxidative solution. Determination of cleat stub performance can be characterized by the cyclic loading hysteresis loop response of TPUs. Cyclic loading behavior of TPUs indicates that the loading behavior is dependent on the strain rate induced on the material. Studies analyzed in this review provide some insight to how cleat stub materials will perform with increased use and environmental aging. Date: Friday, December 20, 2019 Time: 9:00 A.M. Place: ARMS 1103

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Winter Recess Safety Reminder
by MSE Safety 19 Dec '19

19 Dec '19

Hello MSE Researchers, With winter recess in the near future, I wanted to remind all of you to be safe during the holidays as well as going into next semester. If you plan on working in the lab during winter recess, during the weekend, or late at night, please make you have a buddy close by in case there is an accident and helped is needed. This is important regardless of status (grad, post-doc, faculty, etc.). Remember also to come to the lab prepared having read all necessary materials beforehand such as relevant SOPs and the associated SDS. Please exercise extra caution as well when performing lab work over the break because very little faculty and staff will be here over the break to provide aid. Happy Holidays, Jenni Fifer Safety & Mechanical Testing Lab Technician Materials Science & Engineering Purdue University Phone: 765-494-9718 Email: fiferj(a)purdue.edu<mailto:fiferj@purdue.edu>

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Memo: Fridge Cleaning 12-20
by Ku Blanco, Aury Y 18 Dec '19

18 Dec '19

Hi all, Please label or remove any fridge contents you would like to keep by the end of this week. I will be cleaning it before we head out for break and would appreciate your help in doing so! Please let me know of any odds and ends I can save for you in case you have already taken off 😊 Thank you, Aury Ku Administrative Assistant Purdue University School of Materials Engineering Neil Armstrong Hall of Engineering 765/494-4100 akublanc(a)purdue.edu<mailto:staceyl@purdue.edu> [https://www.purdue.edu/brand/images/Purdue_University-150_Years_of_Giant_Le…]

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