Characterization of in-plane shear properties of laminated composites at high strain rates
The in-plane shear responses of continuous fiber reinforced composite materials under high strain rates were characterized experimentally. The V-notch rail shear configuration was used for characterizing the in-plane shear behavior of Newport NB321/3k70 plain weave carbon fabric/epoxy, NCT/321/G150...
Main Author: | |
---|---|
Other Authors: | |
Format: | Others |
Language: | en_US |
Published: |
2007
|
Subjects: | |
Online Access: | http://hdl.handle.net/10057/622 |
id |
ndltd-WICHITA-oai-soar.wichita.edu-10057-622 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-WICHITA-oai-soar.wichita.edu-10057-6222014-10-23T04:54:50ZCharacterization of in-plane shear properties of laminated composites at high strain ratesDandayudhapani, Satish K.Electronic dissertationsThe in-plane shear responses of continuous fiber reinforced composite materials under high strain rates were characterized experimentally. The V-notch rail shear configuration was used for characterizing the in-plane shear behavior of Newport NB321/3k70 plain weave carbon fabric/epoxy, NCT/321/G150 Carbon Fiber Unitape/epoxy, NB321/7781 fiberglass/epoxy, Cytec PWC/T300/3KNT plain weave carbon fabric/epoxy and Fibercote 3KPW/E365 plain weave carbon fabric/epoxy systems. The testing was conducted using a servo hydraulic testing machine at nominal stroke rates ranging between 0.00083in/sec to 500in/sec. A maximum average shear strain rate of 654rad/sec was achieved up to shear strain levels of 0.08 radians, during the tests. The stress-strain behavior of all material systems exhibited contrasting behavior with increasing stroke rates. The stress-strain curves for all materials exhibited an asymptotic behavior for stroke rates approaching 10in/sec and were material dependent for stroke rates exceeding 250in/sec. For Newport NB321/3k70 and NB321/7781 systems at the highest test rate, the shear strengths increased by a factor of three relative to that of the quasi-static rate, and were independent of the reinforcement type. The shear strength for Cytec PWC/T300/3KNT, Fibercote 3KPW/E365 and Newport NCT/321/G150 increased until a stroke rate of 100in/sec and later decreased with increasing stroke rate. The failure modes for Cytec PWC/T300/3KNT, Fibercote 3KPW/E365 and Newport NCT/321/G150 were at the minimum section of the shear coupons, while for Newport NB321/3k70 and NB321/7781, failure was observed to change from a shear mode across the minimum section to a complex failure mode away from the minimum section."December 2006."Keshavanarayana, Suresh R.2007-07-23T16:52:44Z2007-07-23T16:52:44Z2006-12Thesis2073897 bytesapplication/pdft06119http://hdl.handle.net/10057/622en_USCopyright Satish K.Dandayudhapani, 2006. All rights reserved. |
collection |
NDLTD |
language |
en_US |
format |
Others
|
sources |
NDLTD |
topic |
Electronic dissertations |
spellingShingle |
Electronic dissertations Dandayudhapani, Satish K. Characterization of in-plane shear properties of laminated composites at high strain rates |
description |
The in-plane shear responses of continuous fiber reinforced composite materials under high strain rates were characterized experimentally. The V-notch rail shear configuration was used for characterizing the in-plane shear behavior of Newport NB321/3k70 plain weave carbon fabric/epoxy, NCT/321/G150 Carbon Fiber Unitape/epoxy, NB321/7781 fiberglass/epoxy, Cytec PWC/T300/3KNT plain weave carbon fabric/epoxy and Fibercote 3KPW/E365 plain weave carbon fabric/epoxy systems. The testing was conducted using a servo hydraulic testing machine at nominal stroke rates ranging between 0.00083in/sec to 500in/sec. A maximum average shear strain rate of 654rad/sec was achieved up to shear strain levels of 0.08 radians, during the tests. The stress-strain behavior of all material systems exhibited contrasting behavior with increasing stroke rates. The stress-strain curves for all materials exhibited an asymptotic behavior for stroke rates approaching 10in/sec and were material dependent for stroke rates exceeding 250in/sec. For Newport NB321/3k70 and NB321/7781 systems at the highest test rate, the shear strengths increased by a factor of three relative to that of the quasi-static rate, and were independent of the reinforcement type. The shear strength for Cytec PWC/T300/3KNT, Fibercote 3KPW/E365 and Newport NCT/321/G150 increased until a stroke rate of 100in/sec and later decreased with increasing stroke rate. The failure modes for Cytec PWC/T300/3KNT, Fibercote 3KPW/E365 and Newport NCT/321/G150 were at the minimum section of the shear coupons, while for Newport NB321/3k70 and NB321/7781, failure was observed to change from a shear mode across the minimum section to a complex failure mode away from the minimum section. === "December 2006." |
author2 |
Keshavanarayana, Suresh R. |
author_facet |
Keshavanarayana, Suresh R. Dandayudhapani, Satish K. |
author |
Dandayudhapani, Satish K. |
author_sort |
Dandayudhapani, Satish K. |
title |
Characterization of in-plane shear properties of laminated composites at high strain rates |
title_short |
Characterization of in-plane shear properties of laminated composites at high strain rates |
title_full |
Characterization of in-plane shear properties of laminated composites at high strain rates |
title_fullStr |
Characterization of in-plane shear properties of laminated composites at high strain rates |
title_full_unstemmed |
Characterization of in-plane shear properties of laminated composites at high strain rates |
title_sort |
characterization of in-plane shear properties of laminated composites at high strain rates |
publishDate |
2007 |
url |
http://hdl.handle.net/10057/622 |
work_keys_str_mv |
AT dandayudhapanisatishk characterizationofinplaneshearpropertiesoflaminatedcompositesathighstrainrates |
_version_ |
1716718886948175872 |