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To help us customize information and build applications, we collect data about your use of this site. May we collect and use your data? He teaches and directs research in the broad area of polymer engineering. The process tests different models to determine the best fit model for each. Rheometer data for polymer melts, after corrections for shear rate and entrance pressure losses, may fit one model better than another, and as such the following constituent models are reviewed in the form as they are commonly applied in commercial software today: 1 Cross Model, 2 Modified Cross Model, and 3 Carreau-Yasuda.
Once the constituent model is fit, the following temperature dependent models are compared: 1 WLF, Exponential, Arrhenius, and Masuko-Magill. The differences between the models are presented in order to highlight the need to compare different models to obtain a best fit. Lastly, a solution is presented to the problem of convergent viscosities with respect to shear rate as compared across a range of temperatures as no existing model in common use today can capture this specific behavior.
I started in plastics as a machine operator, then mold setup, then moved into processing, and finally into manufacturing engineering at Lescoa Inc. In late I moved to Cascade Engineering, doing molding and structural analyses. I excelled at problem solving and over the years have devised analyses techniques that extended beyond the assumed limitations of the software tools available.
I have been at Altair since November of I have supported many of our applications over the years and taught classes in both our front end applications and many of our solvers for mechanical, crash, CFD, and Manufacturing solutions. I have written some internal applications and authored a few training classes related to injection molding for Altair, including one due to be launched next year, "Polymer Properties for Simulation," which covers properties for simulating with polymers in the context of structures as well as rheological simulation.
The Product Innovator was going through a period of elevated demand where the current cycle time of the existing injection mold tool prohibited them from meeting their demand. When cooling cycles were sped up this led to higher scrap rates due to sink marks. This left the Product Innovator with two options: delay delivery of the product to their top customer with the risk of losing the sale and potentially losing the customer or to invest in additional injection mold tools to double production capacity.
To meet the customer's demand, , parts needed to be produced in a day time period. This request created conflict with the contract manufacturer. They were being asked to absorb the cost of additional molds to meet the timing or run full hour Monday-Friday shifts over the day period which would create losses in revenue by eliminating other clients' scheduled jobs. Zakary has successfully launched over products from concept through production across the aerospace, automotive, consumer, industrial and medical industries.
Taking products from conceptualization to mass production through co-developing innovative solutions with product innovators is Zakary's passion. Close Gabrielle Esposito, Ph. The melting temperature Tm , percent crystallinity Xc , lamellae thickness lc and dhkl spacing of PA11 were all shown to change significantly upon printing, whereas the molecular weight was shown to have a rather gradual increase as a function of AN.
These results imply that the printing conditions used result in an irreversible change in PA11 polymer microstructure and chemistry, and correlate well to the measured mechanical behavior of parts print with corresponding AN. The use of DSC, XRD, and molecular weight analysis provides a more complete picture of the changes due to the SLS printing process and can help optimize the printing parameters to create high-quality printed parts.
She is currently investigating the synthesis of high performance polymer powders for SLS printing at the University of North Carolina, working under Professor Theo Dingemans. S in becoming more circular while creating more jobs, innovations, and a drive towards zero waste. About the Speaker As Executive Director for Envision Charlotte, Amy Aussieker is responsible for developing strategic plans for community outreach, fundraising, vendor and partner relationships.
Since she joined the team in July , Amy has used her two decades of expertise in strategic planning, relationship management, marketing and creative problem solving to help Envision Charlotte become a global model of urban sustainability. Before joining Envision Charlotte, Amy served as a strategic consultant for businesses and Chambers of Commerce in marketing, fundraising, social media and public relations.
She spent several years as Group Vice President for Sales and Marketing for the Charlotte Chamber of Commerce, where she was responsible for leadership, fundraising and community relations. She also served as a business development and community affairs executive with Balfour Beatty Construction, and she founded, operated and recently sold a successful retail business. The focus will be on our commitment to the polymers industry, and how we have fulfilled that mission, both in the past and present.
About the Speaker Education. View Complete CV. He has an extensive background in issue advocacy, government affairs, and grassroots organization. He is also a veteran campaign manager with experience running campaigns on the legislative, congressional, statewide, and national levels.
Matt is a native of Wisconsin and proud alum of the University of Wisconsin. He most recently served as the Chief Economist of the Plastics Industry Association tracking macroeconomic trends, conducting economic research, producing forecasts and report, business sentiment surveys, and enhanced industry data dissemination to members.
Prior to a stint in academia, he was at the International Monetary Fund. His views on the economy and the industry have been widely quoted in the media; his research and insights have been published in peer-reviewed economic and trade journals.
Today all businesses and industries continue to be challenged with hiring and retaining great talent and leaders. This is especially true in the plastics industry. The search for people with needed skill sets or the desire to learn and work in plastic manufacturing is becoming more problematic every day. This presentation will address the following approaches:.
Since graduating, Lloyd has achieved over 35 years of work and leadership experience in manufacturing sites around the United States, with various packaging and engineering companies. Currently, Lloyd is the Sr. A plastic bottle manufacturer with 27 sites in the US and 3, employees. In his spare time, Lloyd enjoys traveling, working with non-profit organizations to serve others Second Chance Programs , hiking, and trail running. Moreover, it is not just about recruiting diverse employees; it is about retaining and developing their professional talents as well.
This presentation will cover: Information on the representation of women in the U. WiM started as a small networking group within the Precision Metalforming Association. What started as a networking group grew very quickly into a trade association operating independently of Precision Metalforming Association. People with disabilities are a powerful workforce for the plastics industry. In this session, James Emmett will discuss how strategically employing people with disabilities is good for your company.
He will cover how to actively tap this workforce during the current labor shortage. He will review the business case such as reduced turnover, lower recruiting costs, improved safety, and consistent productivity. He will end the session by highlighting how people with disabilities enhance your diversity and bring new perspectives to old problems. About the Speaker James Emmett is a national leader in development of employment services for individuals with disabilities as well as in assisting corporations in creation of outreach efforts to the disability community.
He is an individual with a disability and a parent of three daughters with disabilities. He also assisted Easter Seals National in laying the foundation for their national autism services network. James has presented at over national, state, and local conferences on issues related to career development, transition, the business community, and disability.
Close Manoj Nerkar, Ph. Key functions of processing aids in terms of processing and performance are discussed in the paper. Effect of molecular weight of acrylic processing aids on their functions are studied. Additionally, effect of processing conditions, such as temperature and shear on fusion characteristics of PVC formulations, are investigated. Shear rate in the processing was varied by means of rotor speed in torque rheometer. Processing aids of wide molecular weight range are evaluated in the study.
It was observed that relatively lower molecular weight processing aids have different response to change in shear and temperature than higher molecular weight processing aids. Depending upon fusion conditions PVC formulations can yield either single or double fusion peak.
Generally, it was considered that ultra-high molecular weight processing aids yield double fusion peak, however, it was demonstrated in the studies that it is not true. Fusion conditions, temperature, and shear are the main driving forces of fusion dynamics, resulting in either single of double fusion peak. Melt viscosity and shear thinning properties are also examined.
Relatively lower molecular weight processing aids showed higher shear thinning behavior. Nerkar received Ph. From last five years his research focus is in PVC industry, specifically on acrylic processing aids and impact modifiers for PVC and engineering resins including Polycarbonate and its blends.
He published numerous journal papers, conference presentations, patents and patent applications. The microstructure could be tuned by adjusting the shot size to produce either sandwiched solid-skin " porous-core " solid-skin parts or open porous parts. The pore morphology, average pore size, pore size distribution, and pore density were characterized, and the water contact angle WCA and degree of oil-water separation were determined.
Furthermore, the open-porous structure exhibited good oil-water separation capacity. Tensile tests were carried out to study the effect of morphology on the mechanical performances of the molded UHMWPE parts. The characterization shows that a possible application for the sandwiched UHMWPE parts could be as a bone replacement material because of its high mechanical performance, and an application for the open-porous UHMWPE is as a functional filter material due to the fine pore size and high pore density.
His research interests mainly focus on innovative injection molding technologies, polymetric foams and nanocomposites. It was found that using the in-mold switches for monitoring was more effective than either peak injection pressure or cushion monitoring to sort suspect parts and alert of changes in cavity balance.
Prior to joining Penn State, he accumulated over ten years of industrial experience and served in various roles in the plastics industry: manufacturing engineer, manufacturing supervisor, design engineer, and program manager.
His primary expertise is in injection molding and process optimization. Along with developing some of the processing classes, he has also taught plastic materials, mold design, rheology, and quality control classes. He also organizes and chairs the Innovation and Emerging Plastic Technologies conferences that are held in Erie. Brad holds bachelor's and master's degrees in chemical engineering from Virginia Tech. This paper describes the development of innovative temperature control concepts for use in additively manufactured inserts based on CO2.
These have been successfully investigated for their suitability in small batch production. The additive manufacturing processes have been evaluated in terms of their suitability for the production of mold inserts. It has been possible to reduce the time required to prepare the inserts. In the investigation of suitable plastics, POM has proven to be suitable. Of the generative manufacturing processes investigated, stereolithography was found to be suitable.
Robust manufacturing in the injection molding process with the other additive manufacturing processes was not possible. The manufactured components were examined with regard to their properties and compared with conventionally injection-molded components. It was found that a clear dependence on the manufacturing process of the insert used for production can be observed, especially in the crystalline microstructure of the manufactured components.
This makes it difficult to use additively manufactured tool inserts in small-batch production, since the resulting properties of the components in terms of crystallinity and thus distortion are not comparable with injection-molded components.
In further investigations, the minimum necessary thermal properties of the printing materials must be determined in order to ensure robust small series production with component crystallinity comparable to the injection molding process. After his graduation he started working as research associate in the laboratory of Applied Plastics at the University of Applied Sciences in Schmalkalden.
Here he wrote his ph. Since he is woking as self-employed lecturer. Close Sean Kim, Ph. Senior Development Engineer Corning Inc. Summary A machine learning approach based on artificial neural network is presented and applied to injection molding process. Fill time, maximum fill pressure and transient cavity pressure profiles are predicted with the input process conditions of injection speed, melt temperature and mold temperature.
The physics based model using Autodesk Moldflow is evaluated by comparing it with experimental fill pressure profiles for various process conditions, and it is used to generate enough data to train and validate the machine learning model.
With the present machine learning model using data samples, not only the fill time but also the transient pressure profiles are accurately predicted with less than 4.
Further, a new machine learning model is trained with data samples, instead of samples, to check the dependence of the model accuracy on the sample size, and the error in prediction of transient pressure profiles increases only to 6. About the Speaker Education Ph. Close Lih-Sheng Turng, Ph. On-Line Measurement of Plastic Melt Density for Injection Molding Using Ultrasonic Technology Summary Density is an important factor that influences the quality of the injection molded products, and density variation during the injection molding process contains valuable information for process monitoring and optimization.
Therefore, on-line density measurement is of great interest and has significant application value. The existing methods, such as Archimedes-principle-based method and Pressure-Volume-Temperature PVT method, have the shortages of time-delay and high cost of sensors.
As the first attempt, this study proposed an on-line density measurement method based on the analysis of ultrasonic signals. The analysis of the time-domain and frequency-domain signals were combined. The ultrasonic velocity was obtained from the time-domain signals and the acoustic impedance was computed through a full-spectrum analysis of the frequency-domain signals. The proposed method was verified to be accurate with the root mean square error RMSE of 0. Experiments with different process conditions were conducted, including different melt temperature, materials, and mold structures.
The proposed method has the advantages of on-line, non-destructive, high accuracy, and low cost, and is of great application value to be utilized by the injection molding industry. His research encompasses injection molding, nanocomposites, multi-functional materials, bio-based polymers, and tissue engineering.
While fractionation of petroleum yields fuels and chemicals for a diverse set of industries, lignin fractionation using targeted catalysts has demonstrated the ability to generate monomers and oligomers rich in functional groups for polymer synthesis.
This study explores the use of lignin-oil, generated from reductive catalytic fractionation of popular wood, to a hydroxyl-rich mixture of aromatics that is used to synthesize a thermoplastic non-isocyanate polyurethane. The lignin-oil is first converted to a cyclocarbonated derivative using a benign synthetic sequence and further polymerized with a diamine to yield the non-isocyanate TPU.
While more work is underway to optimize the reaction conditions and meet typical mechanical properties of commercial materials, initial analysis shows thermoplastic behavior and flexible properties consistent with traditional thermoplastic polyurethanes.
His initial background is in chemistry, receiving a bachelor's degree from Furman University and a master's degree in chemistry from the University of Florida. After many years as a high school teacher, James has completed his Ph. Close Ruben Schlutter, Ph.
Summary Increased demands on all possible materials put the focus of development on novel functionalities such as, among others, biocidal effects, which are made possible due to property changes in the nanoscale range of existing materials or by combining different material classes.
This paper shows a method to achieve biocidal effects with the help of nanoparticles from transition metal oxides.
These were compounded into plastic granules and lacquer to transfer the biocidal properties on plastic part surfaces. Summary Effect of the thermal barrier coating TBC , deposited on the mold for plastic injection molding was investigated. It was found that films deposited at higher temperatures have better thermo-insulating properties than films deposited at lower temperatures. Growth rate and film porosity increase as deposition temperature increases.
It was observed that the TBC slightly affects the flow length of the plastic melt but improves the filling ability of poorly vented molded part areas. COC provides an unexpected, but essential benefit that enables the manufacture of high-density polyethylene HDPE containers by reheat injection stretch blow molding. COC has good dimensional stability and excellent heat resistance, minimizes distortion of PE exposed to thermal and mechanical stresses.
About the Speaker Paul D. In his year career, Paul has developed and commercialized new copolymers, compounds, shrink, and medical packaging films. He holds twelve US patents. Close Shardul Panwar Sr. A commercial process simulation finite element method, that takes in account the residual stresses due to chemical, thermal, and mechanical shrinkages, is utilized. This method solves the curing process sequentially. In the first step, the distribution of temperature and degree of cure in the composite is computed.
In the second step, the information from the previous step is used to calculate the stress evolution during cure. At the end of the second step, the composite deformation due to tool removal is also calculated. The impact of three different process parameters on the final degree of cure and the residual stresses are studied in detail. Panwar conducts applied research in the areas of fabric-based inflatable structures for renewable energy generation, advanced composite materials for energy storage, smart material and electroactive polymer actuators for soft robotics, conductive ink and fiber optic-based embedded structural sensors for structural health monitoring, and reusable energy absorbing structures for sustainability.
Panwar is particularly interested in developing innovative technologies for future mobility and aerospace applications. He has authored or co-authored multiple journal articles and has filed multiple patents in pursuit of this goal. During his 11 years' working experience with Dow, he has led many projects that resulted in innovative solutions to customers across different market segments including light weighting, flexible packaging, renewable energy, and transportation.
External electromagnetic EM waves affect the operation of an electronic device by interfering with the internal EM signals. To provide EMI shielding, various materials were studied, and the measured electromagnetic shielding effectiveness SE data are presented in this study. The main factors affecting EMI SE are quantified statistically " filler loading, shield thickness, and base polymer resin matrix.
It is also demonstrated that carbon fiber filled thermoplastics can provide EMI shielding at levels greater than 50 dB. He covers various material developments and applications, including EMI Shielding, thermally conductive polymers, and high-heat thermoplastics.
He has been working at Celanese since Various other research interests include process engineering, six-sigma and data-science, electric vehicles, and powertrain applications. In this study, novel additives were supplied by TRuCapSol for twin-screw melt compounding and injection molding with general purpose PLA resin. These additives were received in powder form and investigated for their ability to improve the tensile toughness. We compared our blends to several commercially available toughened PLA blends.
The inherent micro-deformations of PLA were amplified by the novel additive and resulted in improved ductility. Therefore, the potential for the development of blends that enhances the toughness and increase the rate of biodegradation of PLA has been demonstrated. About the Speaker Jordan L. Greenland was born and raised in State College, Pennsylvania.
Jordan graduated with Magna Cum Laude honors in He was also employed by PCT as a mathematics and physics part-time tutor.
During his graduate studies at Lehigh University Jordan received a certificate of completion for participation in level one of the Teacher Development Program.
Summary Hybrid materials nowadays are achieving increasing market dominance in the technical segment due to their outstanding mechanical properties. One such hybrid material that is increasingly coming into focus, especially in mobility branch, are fiber-reinforced plastics. They offer the advantage of low weight and high strength.
As a rule, generally glass or carbon fibers are embedded in the matrix material. Over the last few years, the demand for fiber-reinforced plastics has increased continuously.
Considering the recent changes in the automotive industry, it is expected that this trend will not change in the near future, especially with regard to the weight reduction of means of vehicles. In this project, a process was developed to implement continuous fiber mats in injection molding. With the aid of modern production methods, it was impressively demonstrated that the mechanical characteristics of a PP could be significantly increased by inserting and back-injecting glass fiber mats.
However, it may be possible to directly weld or bond polymers that are miscible but have different material properties via welding techniques. In this work, infrared welding was used to join acrylonitrile butadiene styrene to polyphenylene oxide. Through the use of targeted heating to match the polymer viscosities to each other, the weld strength was improved by up to three times.
About the Speaker Miranda is responsible for leading EWI's technical expertise for all plastic and composite welding technologies. The reinforcements' presence is responsible for improving the out-of-plane strength of the parts, enhancing their damage tolerance. The process feasibility has been successfully demonstrated to join additively manufactured AM metal and polymer parts. However, further investigation of its main advantages and the joining process of subcomponents to support the technique's further development is still missing.
This paper aims to demonstrate the application of U-Joining to fabricate AM L and PEEK hybrid structures produced via laser powder bed fusion and fused filament fabrication, respectively. Firstly, the quasi-static single lap shear performance of coupon specimens produced with optimized joining parameters was assessed. The results indicate an improvement of 2. Fracture surface analyses of tested samples exhibited a mixture of cohesive and adhesive failure.
Further microstructural analyses at the metal-polymer interface showed micromechanical interlocking between the parts. As observed, the PEEK was able to flow and penetrate the cavities at the metallic specimen's rough surface due to the joining friction heat input. To validate this idea, a scaled-down skin-stringer-bracket technology demonstrator was successfully fabricated. About the Speaker Byeonglyul Choi is graduate student in school of mechanical engineering at Korea university.
He is currently working on evaluating mechanical and tribological properties of elastomer under hydrogen environment. A compliant anvil can be used to decrease the required seal pressure, as the hot tool will be able to contact both the thick and thin regions of the packaging, with compression of the compliant anvil.
However, a compliant anvil cannot be used in a double-sided heating process. Therefore, in a double-sided heating process, high seal pressures must be utilized in order to reduce the film thickness in the thick region, to facilitate tool to film contact in the thin region.
In this study, the required seal pressure needed to create continuous non-leaking seals over a 4-film to 8-film thickness transition was explored, with both a rigid and conformable anvil. With a rigid anvil 3.
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