Projections on structures and material strength in the computational context
Abstract
The ideas associated with the subsequent viewgraphs are summarized. The primary motivation behind this presentation is to observe that certain macroscopic, microscopic, and submicroscopic phenomena are being understood that have basic influence on understanding the durability and high temperature sensitivity of polymers and polymer-based composites. This understanding covers important issues of long term stability with respect to residual stresses and deformations which can have very deleterious effects on structures used for long periods of time as a result of the heat-involving manufacturing process. Beyond this, important progress is being made in understanding the nonlinear material response of polymers in the fracture context, because the nonlinear mechanics of the material at the tip of a crack, either propagating or ready to do so, is being understood with increasing precision.
- Publication:
-
Computational Methods for Failure Analysis and Life Prediction
- Pub Date:
- October 1993
- Bibcode:
- 1993cmfa.nasa...37K
- Keywords:
-
- Crack Propagation;
- Crack Tips;
- Fracture Mechanics;
- High Temperature;
- Polymer Matrix Composites;
- Temperature Effects;
- Deformation;
- Residual Stress;
- Thermal Buckling;
- Thermoviscoelasticity;
- Structural Mechanics