Date of Award
Spring 2000
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Mechanical & Aerospace Engineering
Program/Concentration
Engineering Mechanics
Committee Director
Ram Prabhakarau
Committee Director
Alan T. Nettles
Committee Member
Stephen G. Cupschalk
Call Number for Print
Special Collections; LD4331.E57 D68
Abstract
A static test method for modeling low-velocity foreign object impact events to composites would prove to be very beneficial to researchers since much more data can be obtained from a static test than from an impact test. In order to examine if this is feasible, a series of static indentation and low velocity impact tests were carried out and compared. Square specimens of many sizes and thicknesses were utilized to cover the array of types of low velocity impact events. Laminates with a rt/4 stacking sequence were employed since this is by far the most common type of engineering laminate. Three distinct flexural rigidities under two different boundary conditions were tested in order to obtain damage ranging from that due to large deflection to contact stresses and levels in between in order to examine if the static indentation impact comparisons are valid under the spectrum of damage modes that can be experienced. Comparisons between static indentation and low velocity impact tests were based on the maximum applied transverse load. The dependent parameters examined included dent depth, back surface crack length, delamination area and to a limited extent, load-deflection behavior. Results showed that no distinct differences could be seen between the static indentation tests and the low velocity impact tests, indicating that static indentation can be used to represent a low velocity impact event.
Rights
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DOI
10.25777/cdk6-3v09
Recommended Citation
Douglas, Michael J..
"A Comparison of Quasi-Static Indentation Testing to Low Velocity Impact Testing"
(2000). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/cdk6-3v09
https://digitalcommons.odu.edu/mae_etds/473
Included in
Applied Mechanics Commons, Engineering Mechanics Commons, Materials Science and Engineering Commons