Evaluation of collisional damage in polystyrene foam constructions using a dual hammer impact test.: An article from: Polymer Engineering and Science
Book Details
Author(s)J.A. Medding, B.J. Love
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00096KGMM
ISBN-13978B00096KGM9
MarketplaceFrance 🇫🇷
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on May 15, 1996. The length of the article is 2363 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: Low intensity impacts can reduce the structural integrity of an expanded polystyrene safety helmet by the formation of damage in the foam. This reduces the ability of the foam to protect the user under impact conditions. In these experiments, the introduction of a rubber inter-layer that acts as a cushioning layer to protect the polystyrene shell during light and intermediate impacts was evaluated. The evaluation was conducted with a dual hammer impact tester, which was constructed for this purpose. Safety helmet cross sections were simulated by two inch square test specimens. The dual hammer impact testing identified a damage threshold energy above which damage was evident. The introduction of the soft rubber inter-layer between the foam and outer hard shell of these specimens increased the impact loading required to damage the foam by 30%, while the amount of energy transmitted actually increased. Further work is being done on perforated rubber systems that will look at damage and energy transmission in these alternative constructions.
Citation Details
Title: Evaluation of collisional damage in polystyrene foam constructions using a dual hammer impact test.
Author: J.A. Medding
Publication:Polymer Engineering and Science (Refereed)
Date: May 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n9 Page: p1286(4)
Distributed by Thomson Gale
From the author: Low intensity impacts can reduce the structural integrity of an expanded polystyrene safety helmet by the formation of damage in the foam. This reduces the ability of the foam to protect the user under impact conditions. In these experiments, the introduction of a rubber inter-layer that acts as a cushioning layer to protect the polystyrene shell during light and intermediate impacts was evaluated. The evaluation was conducted with a dual hammer impact tester, which was constructed for this purpose. Safety helmet cross sections were simulated by two inch square test specimens. The dual hammer impact testing identified a damage threshold energy above which damage was evident. The introduction of the soft rubber inter-layer between the foam and outer hard shell of these specimens increased the impact loading required to damage the foam by 30%, while the amount of energy transmitted actually increased. Further work is being done on perforated rubber systems that will look at damage and energy transmission in these alternative constructions.
Citation Details
Title: Evaluation of collisional damage in polystyrene foam constructions using a dual hammer impact test.
Author: J.A. Medding
Publication:Polymer Engineering and Science (Refereed)
Date: May 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36 Issue: n9 Page: p1286(4)
Distributed by Thomson Gale
