Dynamic Shock Cushioning Characteristics and Vibration Transmissibility of X-PLY Corrugated Paperboard

Yanfeng Guo,Yungang Fu,Wencai Xu,Hongtao Wang

doi:10.1155/2011/578265

Abstract

X-PLY corrugated paperboard is a new-type corrugated paperboard with three layers of orthotropic corrugated sandwiches structure, and may be employed to protect products from shock or vibration damage during distribution. This article deals with the characterization of properties of X-PLY corrugated paperboard relevant to its application for protective packaging in distribution, such as dynamic cushioning curves, vibration transmissibility and frequency curves. The main feature of article is the evaluation on the dynamic shock cushioning characteristics and vibration transmissibility of X-PLY corrugated paperboards by a series of experimental studies on the drop shock tester and vibration tester, the establishment of experimental formulas of dynamic cushioning curves, and the analysis of peak frequencies, vibration transmissibility and damping ratios. By using the fitting polynomial of curve and method of the least mean square, the experimental formulas and characteristic coefficients of dynamic cushioning curves have been obtained. From the vibration tests with slow sine sweep, the peak frequencies and vibration transmissibility are measured and used to estimate the damping ratios. These works provide basic data and curves relevant to its application for protective packaging in distribution.

Highlights

The shock and vibration experienced by goods result from the vibration of a cargo-carrying vehicle, the shock resulting from the impacts of railroad cars, and the shock caused by the handling of packages, etc
According to the test method described in the standard ASTM D 1596, the drop shock tests of X-PLY corrugated paperboards are made on the drop shock tester for drop heights 30 cm, 60 cm and 90 cm respectively
The waves of drop shock acceleration are similar to half-sine pulses at different static loads and drop heights

Summary

Introduction

The shock and vibration experienced by goods result from the vibration of a cargo-carrying vehicle, the shock resulting from the impacts of railroad cars, and the shock caused by the handling (e.g. dropping) of packages, etc Such goods are protected from shock and vibration damage by isolation. This consists of placing the packaged item within a container, and interposing resilient means between the packaged item and the container to provide the necessary isolation. Such resilient means of protection is known as package cushioning, and may cover plastic foams, usual corrugated paperboard, etc. The ingenious construction provides it better mechanical properties [9]

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