Journal ArticleDOI
Instrumented low-velocity impact of CFRP beams
TLDR
In this paper, a low velocity impact of carbon fiber reinforced epoxy (AS4/3502 by Hercules) was conducted with 48 and 40 layered beams of different combinations of 0°, 90°, 45° and −45° stacking sequences, and the acceleration pulse was analyzed in the frequency domain to determine the source of high frequency vibrations and a simple two-degrees-of-freedom model was used to distinguish between the force on the striker and the force applied to the beam.About:
This article is published in International Journal of Impact Engineering.The article was published on 1995-04-01. It has received 31 citations till now. The article focuses on the topics: Beam (structure) & Fracture mechanics.read more
Citations
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Journal ArticleDOI
Plastic hinges and inertia forces in RC beams under impact loads
Thong M. Pham,Hong Hao +1 more
TL;DR: In this article, the impact behavior of reinforced concrete beams was investigated and a procedure to derive the shear force and bending moment diagrams was proposed to predict the position of the stationary points, which was proven yielding reasonable results in comparison with experimental and numerical results.
Journal ArticleDOI
A new composite structure impact performance assessment program
Paolo Feraboli,Keith T. Kedward +1 more
TL;DR: In this article, the impact performance assessment program (CSIPAP) suggests a multi-parameter methodology to gain further insight in the impact behavior of composite structures, including peak and critical force; critical and dissipated energy; contact duration and coefficient of restitution (COR), which is direct indication of effective structural stiffness; and residual stiffness (normalized contact duration) which yields a plot that bears a striking resemblance with the normalized Compression After Impact (CAI) strength.
Journal ArticleDOI
Enhanced Evaluation of the Low-Velocity Impact Response of Composite Plates
Paolo Feraboli,Keith T. Kedward +1 more
TL;DR: In this article, a modified approach to the classic spring-mass model, which employs the notions of damaged stiffness and dissipated energy, leads to the derivation of approximate formulas that describe the peak force-energy curve.
Journal ArticleDOI
Prediction of the impact force on reinforced concrete beams from a drop weight
Thong M. Pham,Hong Hao +1 more
TL;DR: In this paper, a new empirical model including a comprehensive version and a simplified version is proposed to estimate the maximum impact force on reinforced concrete beams subjected to drop-weight impact using artificial neural network.
Journal ArticleDOI
Some Recommendations for Characterization of Composite Panels by Means of Drop Tower Impact Testing
TL;DR: In this article, the authors present a set of recommendations for best practice with the intent of laying down the foundation for a standard approach to future research programs, particularly with regards to the understanding of impact traces.
References
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Book
Elements of vibration analysis
TL;DR: In this article, the authors provide contemporary coverage of the primary concepts and techniques in vibration analysis, and more elementary material has been added to the first four chapters of this second edition for an updated and expanded introduction to vibration analysis.
Journal ArticleDOI
The impact resistance of composite materials — a review
TL;DR: In this article, the impact response of continuous fiber-reinforced composites is reviewed and an attempt is made to draw together much of the work published in the literature and to identify the fundamental parameters determining the impact resistance of continuous fibre reinforced composite materials.
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On Low-Velocity Impact Testing of Composite Materials
TL;DR: In this paper, the impact response of structural composites to impact cannot be overstated and the need for instrumented testing to optimize our understanding of the impact event, especially the response of the impacted material is presented.
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Instrumented Impact and Static Indentation of Composites
Shaw Ming Lee,Paul Zahuta +1 more
TL;DR: In this paper, the impact behavior of several laminate systems has been studied, defined by impact force, damage size and energy absorption, and it was found that the damage growth process during impact as the force surged to its maximum value can be visualized from the static indentation damage induced at incrementally increased force levels.