Prediction of the tensile impact behavior of injection molding samples from quasi-static data.: An article from: Polymer Engineering and Science
Book Details
Author(s)J.C. Viana, A.M. Cunha, N. Billon
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00098YHBG
ISBN-13978B00098YHB7
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on August 1, 1999. The length of the article is 5118 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: A methodology for predicting the mechanical behavior of injection molded semicrystalline thermoplastics, within a wide range of strain rates and temperatures, is proposed in this work. This method is based on data obtained at isothermal low velocity tensile tests and on a phenomenological constitutive equation that describes the stress as a function of independent and multiplicative terms of the strain, strain rate and temperature. The effect of the processing conditions on the coefficients of this equation is considered by evaluating their dependence on thermo-mechanical indices, calculated from melt flow simulations. Using a finite element code that has this equation built-in, it is possible to predict the mechanical behavior of samples injected with different molding conditions. The extrapolation of the impact properties requires the consideration of the dependence of the material consistency on the strain rate, which is affected by the sample skin-core structure. So, any constitutive equation used to describe the mechanical behavior of the injection molded samples must consider the distinct contributions of the main microstructural layers.
Citation Details
Title: Prediction of the tensile impact behavior of injection molding samples from quasi-static data.
Author: J.C. Viana
Publication:Polymer Engineering and Science (Refereed)
Date: August 1, 1999
Publisher: Society of Plastics Engineers, Inc.
Volume: 39 Issue: 8 Page: 1463(1)
Distributed by Thomson Gale
From the author: A methodology for predicting the mechanical behavior of injection molded semicrystalline thermoplastics, within a wide range of strain rates and temperatures, is proposed in this work. This method is based on data obtained at isothermal low velocity tensile tests and on a phenomenological constitutive equation that describes the stress as a function of independent and multiplicative terms of the strain, strain rate and temperature. The effect of the processing conditions on the coefficients of this equation is considered by evaluating their dependence on thermo-mechanical indices, calculated from melt flow simulations. Using a finite element code that has this equation built-in, it is possible to predict the mechanical behavior of samples injected with different molding conditions. The extrapolation of the impact properties requires the consideration of the dependence of the material consistency on the strain rate, which is affected by the sample skin-core structure. So, any constitutive equation used to describe the mechanical behavior of the injection molded samples must consider the distinct contributions of the main microstructural layers.
Citation Details
Title: Prediction of the tensile impact behavior of injection molding samples from quasi-static data.
Author: J.C. Viana
Publication:Polymer Engineering and Science (Refereed)
Date: August 1, 1999
Publisher: Society of Plastics Engineers, Inc.
Volume: 39 Issue: 8 Page: 1463(1)
Distributed by Thomson Gale
