skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Elastic wave propagation and dynamic delamination of carbon-fiber/expoxy laminates impacted with magnetic flyer plates

Abstract

Impact experiments have been conducted on carbon-fiber/epoxy laminated plates to characterize the propagation of Lamb waves and the resulting interfacial shearing stresses responsible for delamination. These experiments were conducted using a low frequency pneumatically-driven piston impacting a tup, which in turn, impacted the composite plate to generate a long duration, low intensity pulse. Recently a new dynamic loading system has been developed using thin magnetic flyer plates. These plates can be accelerated to very high velocities and generate short duration, high intensity pulses. The purpose of this investigation was to characterize the elastic wave propagation of these pulses in 0/90/ carbon-fiber/epoxy laminates with and without delaminations. Dynamic moir{var_theta} interferometry was used to capture displacement fields. Multiple interferograms were obtained during the interaction of stress waves with delaminations using a high-speed framing camera. A detector was designed to determine the velocity of the flyer plate at impact Specimens were subjected to various loading rates and input energies by controlling the flyer plate velocity. The elastic wave propagation and delamination behavior were then characterized as a function of pulse magnitude and duration. The results from this work will lead to a better understanding of the initiation, growth and arrest of delamination inmore » laminated composites subjected to transient stress wave loading.« less

Authors:
; ; ;  [1]
  1. Idaho National Lab., Idaho Falls, ID (United States)
Publication Date:
OSTI Identifier:
175188
Report Number(s):
CONF-950686-
TRN: 95:006111-0108
Resource Type:
Conference
Resource Relation:
Conference: Joint applied mechanics and materials summer meeting, Los Angeles, CA (United States), 28-30 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of AMD - MD `95: Summer conference; PB: 520 p.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; EPOXIDES; WAVE PROPAGATION; CRACK PROPAGATION; CARBON FIBERS; INTERFEROMETRY; PULSES; STRESSES; VELOCITY; COMPOSITE MATERIALS

Citation Formats

Bruck, H A, Perry, Jr, K E, Epstein, J S, and Beuscher, B J. Elastic wave propagation and dynamic delamination of carbon-fiber/expoxy laminates impacted with magnetic flyer plates. United States: N. p., 1995. Web.
Bruck, H A, Perry, Jr, K E, Epstein, J S, & Beuscher, B J. Elastic wave propagation and dynamic delamination of carbon-fiber/expoxy laminates impacted with magnetic flyer plates. United States.
Bruck, H A, Perry, Jr, K E, Epstein, J S, and Beuscher, B J. 1995. "Elastic wave propagation and dynamic delamination of carbon-fiber/expoxy laminates impacted with magnetic flyer plates". United States.
@article{osti_175188,
title = {Elastic wave propagation and dynamic delamination of carbon-fiber/expoxy laminates impacted with magnetic flyer plates},
author = {Bruck, H A and Perry, Jr, K E and Epstein, J S and Beuscher, B J},
abstractNote = {Impact experiments have been conducted on carbon-fiber/epoxy laminated plates to characterize the propagation of Lamb waves and the resulting interfacial shearing stresses responsible for delamination. These experiments were conducted using a low frequency pneumatically-driven piston impacting a tup, which in turn, impacted the composite plate to generate a long duration, low intensity pulse. Recently a new dynamic loading system has been developed using thin magnetic flyer plates. These plates can be accelerated to very high velocities and generate short duration, high intensity pulses. The purpose of this investigation was to characterize the elastic wave propagation of these pulses in 0/90/ carbon-fiber/epoxy laminates with and without delaminations. Dynamic moir{var_theta} interferometry was used to capture displacement fields. Multiple interferograms were obtained during the interaction of stress waves with delaminations using a high-speed framing camera. A detector was designed to determine the velocity of the flyer plate at impact Specimens were subjected to various loading rates and input energies by controlling the flyer plate velocity. The elastic wave propagation and delamination behavior were then characterized as a function of pulse magnitude and duration. The results from this work will lead to a better understanding of the initiation, growth and arrest of delamination in laminated composites subjected to transient stress wave loading.},
doi = {},
url = {https://www.osti.gov/biblio/175188}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: