Failure mechanism of epoxy polymer: transition from ductile to brittle failure

Wei Wu; Guowei Ma

doi:10.1117/12.852677

14 April 2010 Failure mechanism of epoxy polymer: transition from ductile to brittle failure

Wei Wu, Guowei Ma

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75225L (2010) https://doi.org/10.1117/12.852677
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

The failure processes of an epoxy polymer (Epicote 21506) were studied by using a high speed camera evolving over a range of strain rates from 0.0001s^-1 to 668s^-1. The front surface of the specimen was monitored by the high speed camera to capture the deformation and cracking processes. A split Hopkinson pressure bar (SHPB) was utilized to examine the dynamic response of the material, and the uniaxial compression test was applied for its quasi-static behavior. The microstructure of the specimen fracture surface after quasi-static and dynamic compression was also investigated by using a Scanning Electron Microscope (SEM) to look insight into the failure mechanism of the material. With the coupled analysis of stress-strain curves and captured images, the behaviors of the specimen under static and dynamic loading can be determined precisely with sufficient details. The specimen under static loading displayed ductile failure, while that under dynamic loading revealed different brittle damage behaviors.

Citation Download Citation

Wei Wu and Guowei Ma "Failure mechanism of epoxy polymer: transition from ductile to brittle failure", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75225L (14 April 2010); https://doi.org/10.1117/12.852677

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available