Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

The near field dynamic response of a quasi-isotropic laminate to a number of impulsive internal line sources has been considered in the companion paper [1]. That paper deals with three different line dislocation sources located at each of the seven ply interfaces in turn and shows the time histories of the top surface normal displacement at a distance of one plate thickness from the vertical plane containing the line of action of the source. In this paper attention is focussed on the far field disturbances arising from a line dislocation in the form of a step function in time and corresponding to a crack opening displacement discontinuity acting at each of the seven interfaces in turn. The time history of the normal displacement at the upper surface is presented for receivers located at a distance of 20 plate thicknesses from the plane of action of the sources.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18B

Chapter

Chapter 5: Engineered Materials

Section

Composites

Pages

1225-1231

DOI

10.1007/978-1-4615-4791-4_157

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Predicted Far Field Response of Quasi-Isotropic Laminates to Internal Impulsive Events

Snowbird, UT, USA

The near field dynamic response of a quasi-isotropic laminate to a number of impulsive internal line sources has been considered in the companion paper [1]. That paper deals with three different line dislocation sources located at each of the seven ply interfaces in turn and shows the time histories of the top surface normal displacement at a distance of one plate thickness from the vertical plane containing the line of action of the source. In this paper attention is focussed on the far field disturbances arising from a line dislocation in the form of a step function in time and corresponding to a crack opening displacement discontinuity acting at each of the seven interfaces in turn. The time history of the normal displacement at the upper surface is presented for receivers located at a distance of 20 plate thicknesses from the plane of action of the sources.