Abstract
Polymer composite structures are usually subjected to large flexural loadings during their life-span of the structures, so the flexural behavior of these structures and their constituents in different environmental conditions are critical to their use. A novel analytical approach for epoxy resin semibrittle materials with strain softening model in tension and compression has been developed to investigate the flexural behavior of these materials. The value of the flexural overstrength factor which is the ratio of the flexural strength to the strength obtained from tension and compression stress strain models depends on stress gradient, size and loading system and it has already been evaluated at the laboratory condition. The mechanical properties of epoxy resin materials are sensitive to environmental effects at which they are loaded. The influence of temperature 60°C and humidity 90% Rh on tension, compression and flexural behavior of epoxy resin polymeric materials PRI and PR 520 have been investigated. Digital image correlation system was used for material characterization. The effects of heat and humidity on softening localization in flexural response were considered. The influence of heat and humidity on the flexural over-strength factor was evaluated.
| Original language | English (US) |
|---|---|
| Title of host publication | ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) |
| Publisher | American Society of Mechanical Engineers (ASME) |
| Volume | 9 |
| ISBN (Print) | 9780791856383 |
| DOIs | |
| State | Published - 2013 |
| Event | ASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 - San Diego, CA, United States Duration: Nov 15 2013 → Nov 21 2013 |
Other
| Other | ASME 2013 International Mechanical Engineering Congress and Exposition, IMECE 2013 |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 11/15/13 → 11/21/13 |
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ASJC Scopus subject areas
- Mechanical Engineering
Cite this
Environmental effects on flexural over-strength factor of epoxy resin materials. / Yekani Fard, Masoud; Chattopadhyay, Aditi; Raji, Brian.
ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). Vol. 9 American Society of Mechanical Engineers (ASME), 2013.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Environmental effects on flexural over-strength factor of epoxy resin materials
AU - Yekani Fard, Masoud
AU - Chattopadhyay, Aditi
AU - Raji, Brian
PY - 2013
Y1 - 2013
N2 - Polymer composite structures are usually subjected to large flexural loadings during their life-span of the structures, so the flexural behavior of these structures and their constituents in different environmental conditions are critical to their use. A novel analytical approach for epoxy resin semibrittle materials with strain softening model in tension and compression has been developed to investigate the flexural behavior of these materials. The value of the flexural overstrength factor which is the ratio of the flexural strength to the strength obtained from tension and compression stress strain models depends on stress gradient, size and loading system and it has already been evaluated at the laboratory condition. The mechanical properties of epoxy resin materials are sensitive to environmental effects at which they are loaded. The influence of temperature 60°C and humidity 90% Rh on tension, compression and flexural behavior of epoxy resin polymeric materials PRI and PR 520 have been investigated. Digital image correlation system was used for material characterization. The effects of heat and humidity on softening localization in flexural response were considered. The influence of heat and humidity on the flexural over-strength factor was evaluated.
AB - Polymer composite structures are usually subjected to large flexural loadings during their life-span of the structures, so the flexural behavior of these structures and their constituents in different environmental conditions are critical to their use. A novel analytical approach for epoxy resin semibrittle materials with strain softening model in tension and compression has been developed to investigate the flexural behavior of these materials. The value of the flexural overstrength factor which is the ratio of the flexural strength to the strength obtained from tension and compression stress strain models depends on stress gradient, size and loading system and it has already been evaluated at the laboratory condition. The mechanical properties of epoxy resin materials are sensitive to environmental effects at which they are loaded. The influence of temperature 60°C and humidity 90% Rh on tension, compression and flexural behavior of epoxy resin polymeric materials PRI and PR 520 have been investigated. Digital image correlation system was used for material characterization. The effects of heat and humidity on softening localization in flexural response were considered. The influence of heat and humidity on the flexural over-strength factor was evaluated.
UR - http://www.scopus.com/inward/record.url?scp=84903466643&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84903466643&partnerID=8YFLogxK
U2 - 10.1115/IMECE2013-64014
DO - 10.1115/IMECE2013-64014
M3 - Conference contribution
AN - SCOPUS:84903466643
SN - 9780791856383
VL - 9
BT - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
PB - American Society of Mechanical Engineers (ASME)
ER -