Full Field Study of Strain Distribution Near the Crack Tip in the Fracture of Solid Propellants Via Large Strain Digital Image Correlation and Optical Microscopy

Citation

Gonzalez, Javier Gonzalez (1997) Full Field Study of Strain Distribution Near the Crack Tip in the Fracture of Solid Propellants Via Large Strain Digital Image Correlation and Optical Microscopy. Engineer's thesis, California Institute of Technology. doi:10.7907/HRM1-RJ74. https://resolver.caltech.edu/CaltechETD:etd-12212004-164817

Abstract

A full field method for visualizing deformation around the crack tip in a fracture process with large strains is developed. A digital image correlation program (DIC) is used to incrementally compute strains and displacements between two consecutive images of a deformation process. Values of strain and displacements for consecutive deformations are added, this way solving convergence problems in the DIC algorithm when large deformations are investigated. The method developed is used to investigate the strain distribution within 1 mm of the crack tip in a particulate composite solid (propellant) using microscopic visualization of the deformation process.

Item Type:	Thesis (Engineer's thesis)
Subject Keywords:	(Aeronautics)
Degree Grantor:	California Institute of Technology
Division:	Engineering and Applied Science
Major Option:	Aeronautics
Thesis Availability:	Public (worldwide access)
Research Advisor(s):	Knauss, Wolfgang Gustav
Group:	GALCIT
Thesis Committee:	Knauss, Wolfgang Gustav (chair) Ravichandran, Guruswami Shepherd, Joseph E.
Defense Date:	14 January 1997
Record Number:	CaltechETD:etd-12212004-164817
Persistent URL:	https://resolver.caltech.edu/CaltechETD:etd-12212004-164817
DOI:	10.7907/HRM1-RJ74
Default Usage Policy:	No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:	5096
Collection:	CaltechTHESIS
Deposited By:	Imported from ETD-db
Deposited On:	29 Dec 2004
Last Modified:	11 Aug 2022 20:43

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