SPE Library

The SPE Library contains thousands of papers, presentations, journal briefs and recorded webinars from the best minds in the Plastics Industry. Spanning almost two decades, this collection of published research and development work in polymer science and plastics technology is a wealth of knowledge and information for anyone involved in plastics.

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Conference Proceedings
Direct Compounding—Insight and Results of the First Full-Scale Pilot Plant
Tobias Potyra, September 2013
The innovative Direct SMC process has reached a point where it can be introduced into industrial applications. This presentation gives an overview of the state of development of the process and will give an insight in the processing technology. Furthermore the full industrial scale process line will be shown as it is installed at the facilities of Fraunhofer ICT Germany.
Ke Feng, September 2013
With the aid of a unique lab scale test a new polyphenylene sulfide material has been developed to enable the first-ever 3D robotic blow molding production. Data on melt viscosity development and details in the test method will be discussed.
Improvement in the Simulation of Injection Molded Short Glass Thermoplastic Composites
Syed Mazahir, September 2013
This paper presents simulation results for prediction of fiber orientation in a center-gated disk using Folgar Tucker model with Newtonian flow and experimentally measured orientation at the gate as an initial condition. A steady moving front with circular shape was included to capture the effects of the frontal flow on fiber orientation. Quadratic and invariant-based optimal fitting closures are also assessed in shear and planar extensional flows and compared with experimental evolution of fiber orientation.
Thermoplastic Composite Structural Strut
Thomas Russell, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
Simulating Orientation of Long Semi-Flexible Glass Fibers in Three-Dimensional Injection Molded Thermoplastic Composites
Mark Cieslinski, September 2013
In this presentation a comparison between rigid and semi- flexible fiber-orientation models are assessed for long semi- flexible glass fibers in an end-gated plaque. Simulations were done under non-isothermal conditions taking into account entry effects and the fountain-flow behavior at the advancing front. Orientation predictions are compared to experimental data measured in the gate and mold cavity both along and away from the centerline.
Repairs for Advanced Composite Structures
Lou Dorworth, September 2013
This presentation provides a short overview of current repair methodologies used to restore structural integrity in advanced composites in aerospace and how these practices might be transferred to the automotive industry.
Progress with Polyurethane Matrix Resin Technology: High-Speed Resin Transfer Molding Processes and Application Examples
Stefan Kreilingr, Frank Fetscher, September 2013
Novel polyurethane matrix resin enables manufacturing of automotive composite parts via high-speed resin transfer molding (RTM) processes. Due to its inherent fracture toughness the polyurethane technology can offer superior fatigue resistance. Technical insights into the mass production of an automotive composite leaf spring will be given. In addition painting and assembly of composites via adhesive bonding are important steps along the process chain where further efficiencies can be realized.
The Influence of Bond Dam Design and Hard Hits on Bond-Line Read-Through Severity
Kedzie Fernholz, September 2013
An experiment to investigate the root causes of adhesive-induced distortion in Class “A” panels was completed. This experiment showed that features in the inner panel that change the thickness of the adhesive across the bead width are responsible for the visible distortions in the outer panel surface. In addition a visible distortion occurs in the surface only when there is adhesive between the inner and outer panels.
Predicting Performance of Thermoplastic Composites Taking into Account the Fiber Orientation Effects Utilizing ULTRASIMTM Technology — Part I: Methodology
Marios Lambi, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
Implementation of Advanced Composite Design Software and Practices
James Salerno, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
CAD: Composites Are Different — Moving Beyond Yesterday’s CAD Tools to Accelerate Adoption in Mass-Produced Autos
Rani Richardson, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
Multi-Scale Modeling of Creep of Reinforced Plastics Parts with DIGIMAT
Laurent Adam, September 2013
This paper deals with the prediction of the overall behavior of polymer matrix composites and structures based on mean-field homogenization. We present the basis of the mean-field homogenization formulation and illustrate the method through the analysis of the creep properties of fiber-reinforced structures. The present formulation is part of the DIGIMAT software and its interface to FEA packages enabling multi-scale FE analysis of these composite structures.
Assessment of the Slowdown in Fiber Orientation Evolution in a Center-Gated Disk
Gregorio Manuel Vélez-García, September 2013
Recent modifications to the standard Folgar-Tucker model aim to slow down the evolution of fiber orientation and have been shown to improve orientation predictions in shear flow experiments. However assessment of these models in injection-molded geometries in which shear and extension are both present is very limited. In this work researchers have assessed the evolution of orientation using the newly developed models in a center-gated disk which provides a good injection molding test case combining both shear and extension.
Class A Surface Finishing of Composites via Powder in-Mold Coatings
Thomas Schmidt, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
Injection Molding Fiber Orientation Property Predictions & Failure Analysis
Robert Sherman, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
DIGIMAT for Continuous Fiber Reinforced Composites
Roger Assaker, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
New SMC Application for Automotive Seat
Mahmut Bingöl, September 2013
Thermoset-based sheet-molding compound (SMC) with an unsaturated polyester matrix was used to develop a new glass-fiber reinforced material. Specimens were cut from newly molded SMC plates and subjected to 3-point flexure and tensile tests. FEM models of an SMC seat-connection element have been generated and analyzed. then compared with physical testing results.
Multi-Scale Modeling of Fatigue of Fiber Reinforced Plastics with DIGIMAT
Michael Parrott, September 2013
PowerPoint Presentation at Automotive Composites Conference and Exhibition
Understanding of Aerospace Composite Design Principles for Structural Fittings
Richard Schaake, September 2013
CFRP technology is currently being extended to structural fittings and future use of the technology for automotive applications is under investigation. The design and production of such products is typically a manual process. The result of one such design method for 3D parts has been analyzed using analytical models to understand the role of resin and fiber in these designs paving the way for the use of materials more suitable for mass production than the well established epoxy 914/T300 composite. It was concluded that the design principle investigated is effective in maximizing tension in fibers and compression in the resin while minimizing shear in parts that are subject to out-of-plane loads. Good agreement with bending and shear tests was found.

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How to Reference Articles from the SPE Library:

Brief version (acceptable):
Author(s), SPE-ANTEC Tech. Papers, vol. no., page no. (year).
Proper version (preferred):
Author(s), “Title,” SPE-ANTEC Meeting in location: month, year, vol. no., page no.