Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Mode-Mix"”.
-
Effect of a Graded Layer on the Plastic Dissipation During Mixed-Mode Fatigue Crack Growth on Ductile Bimaterial Interfaces
An energy-based theory for predicting mode I fatigue crack growth rates in ductile metals based on the total plastic dissipation ahead of a crack tip was proposed in 2003. Since then, this theory has been extended to layered material systems that typically include mixed-mode loading and …
-
Linking travel demand management and emission estimation tools
… of the four step travel demand forecasting models for each emission analysis. This could delay the process of approving a transportation program to be included in the State Implementation Plan. To simplify the process of emission impact analysis of TDMs using TDM software, a link between TDM …
-
Quantitative and consistent tests for interlayer adhesion in laminated glass
… factors, energy release rate and fracture mode-mix with crack length for the extraction of toughness. Further microscopic analysis of the fracture surfaces elaborated different scenarios to describe the observed fracture mechanisms. At least partial delamination was observed, followed by …
-
Using far-field measurements for determining mixed-mode interactions at interfaces
… work is to develop a direct method to extract mixed-mode TSRs using only the far-field measurements. The first topic of the dissertation deals with extracting mixed-mode TSRs based on a combination of global and local measurements including load-displacement, crack extension, crack tip opening …
-
Mechanism of Fatigue Crack Growth at Polymer/metal Interface
… along an Al/epoxy interface was examined under mixed-mode conditions. To provide different combinations of Mode-I and Mode-II conditions, a flexural peel (FP) technique was developed, which proved to be particularly useful for subcritical crack growth studies. Using this technique, fatigue crack …
-
The notched coating adhesion specimen: a fracture test for coatings and accelerated screening test for adhesion
… calculations. The specimen geometry results in a mode mix which drives the debond to the interface, thus obtaining a measure of interfacial behavior. Because of the geometry and testing method, the technique is simple, inexpensive and may be conducted quickly. The properties of the coating and the …
-
Durability of Polyimide/Titanium Adhesive Bonds: An Interphase Investigation
… of an accelerated aging geometry and a mode mix that leads to failure through the interphase, the region of interest. The bulk samples have the advantage of an increased interphase volume and allow for the application of bulk analysis techniques to the interphase, a region that is …
-
A novel discrete damage zone model and enhancement of the extended finite element method for fracture mechanics problems
… method (XFEM), and (II) a discrete damage zone model for quasi-static and fatigue delamination in composites. The first method improves XFEM when applied to general nonlinear materials when crack tip analytical solutions are not available. For linear elastic materials, Branch functions are …
-
Durability of Polyimide Adhesives and Their Bonded Joints for High Temperature Applications
… among the three adhesive systems. The effect of mode-mixity on the fracture toughness of the Ti-6Al-4V/FM-5 adhesive bonded system was also evaluated. DCB tests in conjunction with end-notched flexure (ENF) and mixed-mode flexure (MMF) tests, were used to fracture the bonded joints under pure …